fix: close sibling-worktree loophole in already-inside path

Drill scenario worktree-already-inside-spec-aware revealed a latent
skill loophole: agents detecting existing isolation would correctly
refuse to nest a worktree, but then offer options — including exiting
to the main repo and creating a sibling worktree from there — and
execute the sibling option when the actor accepted.

The prior wording "Do NOT create another worktree" got read as
"don't NEST another worktree," leaving sibling creation as an
apparently-legal workaround that satisfied the agent's interpretation
of the directive while violating the skill's actual intent (use the
current workspace, period).

Fix: tighten the already-inside block to be explicit:
- Current workspace is the working environment, use it
- No alternatives, no creation — not nested, not sibling, not anywhere
- If the user genuinely needs different isolation for unrelated work,
  they have to exit the current workspace themselves

Validation pending via drill reruns of worktree-already-inside and
worktree-already-inside-spec-aware on this branch state.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -9,7 +9,7 @@
     {
       "name": "superpowers",
       "description": "Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques",
-      "version": "5.0.5",
+      "version": "5.0.6",
       "source": "./",
       "author": {
         "name": "Jesse Vincent",

.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "superpowers",
   "description": "Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques",
-  "version": "5.0.5",
+  "version": "5.0.6",
   "author": {
     "name": "Jesse Vincent",
     "email": "jesse@fsck.com"
@@ -9,5 +9,12 @@
   "homepage": "https://github.com/obra/superpowers",
   "repository": "https://github.com/obra/superpowers",
   "license": "MIT",
-  "keywords": ["skills", "tdd", "debugging", "collaboration", "best-practices", "workflows"]
+  "keywords": [
+    "skills",
+    "tdd",
+    "debugging",
+    "collaboration",
+    "best-practices",
+    "workflows"
+  ]
 }

.cursor-plugin/plugin.json

@@ -2,7 +2,7 @@
   "name": "superpowers",
   "displayName": "Superpowers",
   "description": "Core skills library: TDD, debugging, collaboration patterns, and proven techniques",
-  "version": "5.0.5",
+  "version": "5.0.6",
   "author": {
     "name": "Jesse Vincent",
     "email": "jesse@fsck.com"
@@ -10,7 +10,14 @@
   "homepage": "https://github.com/obra/superpowers",
   "repository": "https://github.com/obra/superpowers",
   "license": "MIT",
-  "keywords": ["skills", "tdd", "debugging", "collaboration", "best-practices", "workflows"],
+  "keywords": [
+    "skills",
+    "tdd",
+    "debugging",
+    "collaboration",
+    "best-practices",
+    "workflows"
+  ],
   "skills": "./skills/",
   "agents": "./agents/",
   "commands": "./commands/",

.opencode/plugins/superpowers.js

@@ -68,8 +68,6 @@ When skills reference tools you don't have, substitute OpenCode equivalents:
 - \`Skill\` tool → OpenCode's native \`skill\` tool
 - \`Read\`, \`Write\`, \`Edit\`, \`Bash\` → Your native tools
 
-**Skills location:**
-Superpowers skills are in \`${configDir}/skills/superpowers/\`
 Use OpenCode's native \`skill\` tool to list and load skills.`;
 
     return `<EXTREMELY_IMPORTANT>
@@ -96,12 +94,19 @@ ${toolMapping}
       }
     },
 
-    // Use system prompt transform to inject bootstrap (fixes #226 agent reset bug)
-    'experimental.chat.system.transform': async (_input, output) => {
+    // Inject bootstrap into the first user message of each session.
+    // Using a user message instead of a system message avoids:
+    //   1. Token bloat from system messages repeated every turn (#750)
+    //   2. Multiple system messages breaking Qwen and other models (#894)
+    'experimental.chat.messages.transform': async (_input, output) => {
       const bootstrap = getBootstrapContent();
-      if (bootstrap) {
-        (output.system ||= []).push(bootstrap);
-      }
+      if (!bootstrap || !output.messages.length) return;
+      const firstUser = output.messages.find(m => m.info.role === 'user');
+      if (!firstUser || !firstUser.parts.length) return;
+      // Only inject once
+      if (firstUser.parts.some(p => p.type === 'text' && p.text.includes('EXTREMELY_IMPORTANT'))) return;
+      const ref = firstUser.parts[0];
+      firstUser.parts.unshift({ ...ref, type: 'text', text: bootstrap });
     }
   };
 };

README.md

@@ -82,6 +82,13 @@ Fetch and follow instructions from https://raw.githubusercontent.com/obra/superp
 
 **Detailed docs:** [docs/README.opencode.md](docs/README.opencode.md)
 
+### GitHub Copilot CLI
+
+```bash
+copilot plugin marketplace add obra/superpowers-marketplace
+copilot plugin install superpowers@superpowers-marketplace
+```
+
 ### Gemini CLI
 
 ```bash

RELEASE-NOTES.md

@@ -1,5 +1,44 @@
 # Superpowers Release Notes
 
+## Unreleased
+
+### GitHub Copilot CLI Support
+
+- **SessionStart context injection** — Copilot CLI v1.0.11 added support for `additionalContext` in sessionStart hook output. The session-start hook now detects the `COPILOT_CLI` environment variable and emits the SDK-standard `{ "additionalContext": "..." }` format, giving Copilot CLI users the full superpowers bootstrap at session start. (Original fix by @culinablaz in PR #910)
+- **Tool mapping** — added `references/copilot-tools.md` with the full Claude Code to Copilot CLI tool equivalence table
+- **Skill and README updates** — added Copilot CLI to the `using-superpowers` skill's platform instructions and README installation section
+
+### OpenCode Fixes
+
+- **Skills path consistency** — the bootstrap text no longer advertises a misleading `configDir/skills/superpowers/` path that didn't match the runtime path. The agent should use the native `skill` tool, not navigate to files by path. Tests now use consistent paths derived from a single source of truth. (#847, #916)
+- **Bootstrap as user message** — moved bootstrap injection from `experimental.chat.system.transform` to `experimental.chat.messages.transform`, prepending to the first user message instead of adding a system message. Avoids token bloat from system messages repeated every turn (#750) and fixes compatibility with Qwen and other models that break on multiple system messages (#894).
+
+## v5.0.6 (2026-03-24)
+
+### Inline Self-Review Replaces Subagent Review Loops
+
+The subagent review loop (dispatching a fresh agent to review plans/specs) doubled execution time (~25 min overhead) without measurably improving plan quality. Regression testing across 5 versions with 5 trials each showed identical quality scores regardless of whether the review loop ran.
+
+- **brainstorming** — replaced Spec Review Loop (subagent dispatch + 3-iteration cap) with inline Spec Self-Review checklist: placeholder scan, internal consistency, scope check, ambiguity check
+- **writing-plans** — replaced Plan Review Loop (subagent dispatch + 3-iteration cap) with inline Self-Review checklist: spec coverage, placeholder scan, type consistency
+- **writing-plans** — added explicit "No Placeholders" section defining plan failures (TBD, vague descriptions, undefined references, "similar to Task N")
+- Self-review catches 3-5 real bugs per run in ~30s instead of ~25 min, with comparable defect rates to the subagent approach
+
+### Brainstorm Server
+
+- **Session directory restructured** — the brainstorm server session directory now contains two peer subdirectories: `content/` (HTML files served to the browser) and `state/` (events, server-info, pid, log). Previously, server state and user interaction data were stored alongside served content, making them accessible over HTTP. The `screen_dir` and `state_dir` paths are both included in the server-started JSON. (Reported by 吉田仁)
+
+### Bug Fixes
+
+- **Owner-PID lifecycle fixes** — the brainstorm server's owner-PID monitoring had two bugs causing false shutdowns within 60 seconds: (1) EPERM from cross-user PIDs (Tailscale SSH, etc.) was treated as "process dead", and (2) on WSL the grandparent PID resolves to a short-lived subprocess that exits before the first lifecycle check. Fixed by treating EPERM as "alive" and validating the owner PID at startup — if it's already dead, monitoring is disabled and the server relies on the 30-minute idle timeout. This also removes the Windows/MSYS2-specific carve-out from `start-server.sh` since the server now handles it generically. (#879)
+- **writing-skills** — corrected false claim that SKILL.md frontmatter supports "only two fields"; now says "two required fields" and links to the agentskills.io specification for all supported fields (PR #882 by @arittr)
+
+### Codex App Compatibility
+
+- **codex-tools** — added named agent dispatch mapping documenting how to translate Claude Code's named agent types to Codex's `spawn_agent` with worker roles (PR #647 by @arittr)
+- **codex-tools** — added environment detection and Codex App finishing sections for worktree-aware skills (by @arittr)
+- **Design spec** — added Codex App compatibility design spec (PRI-823) covering read-only environment detection, worktree-safe skill behavior, and sandbox fallback patterns (by @arittr)
+
 ## v5.0.5 (2026-03-17)
 
 ### Bug Fixes

docs/superpowers/plans/2026-03-23-codex-app-compatibility.md

@@ -0,0 +1,564 @@
+# Codex App Compatibility Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Make `using-git-worktrees`, `finishing-a-development-branch`, and related skills work in the Codex App's sandboxed worktree environment without breaking existing behavior.
+
+**Architecture:** Read-only environment detection (`git-dir` vs `git-common-dir`) at the start of two skills. If already in a linked worktree, skip creation. If on detached HEAD, emit a handoff payload instead of the 4-option menu. Sandbox fallback catches permission errors during worktree creation.
+
+**Tech Stack:** Git, Markdown (skill files are instruction documents, not executable code)
+
+**Spec:** `docs/superpowers/specs/2026-03-23-codex-app-compatibility-design.md`
+
+---
+
+## File Structure
+
+| File | Responsibility | Action |
+|---|---|---|
+| `skills/using-git-worktrees/SKILL.md` | Worktree creation + isolation | Add Step 0 detection + sandbox fallback |
+| `skills/finishing-a-development-branch/SKILL.md` | Branch finishing workflow | Add Step 1.5 detection + cleanup guard |
+| `skills/subagent-driven-development/SKILL.md` | Plan execution with subagents | Update Integration description |
+| `skills/executing-plans/SKILL.md` | Plan execution inline | Update Integration description |
+| `skills/using-superpowers/references/codex-tools.md` | Codex platform reference | Add detection + finishing docs |
+
+---
+
+### Task 1: Add Step 0 to `using-git-worktrees`
+
+**Files:**
+- Modify: `skills/using-git-worktrees/SKILL.md:14-15` (insert after Overview, before Directory Selection Process)
+
+- [ ] **Step 1: Read the current skill file**
+
+Read `skills/using-git-worktrees/SKILL.md` in full. Identify the exact insertion point: after the "Announce at start" line (line 14) and before "## Directory Selection Process" (line 16).
+
+- [ ] **Step 2: Insert Step 0 section**
+
+Insert the following between the Overview section and "## Directory Selection Process":
+
+```markdown
+## Step 0: Check if Already in an Isolated Workspace
+
+Before creating a worktree, check if one already exists:
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+**If `GIT_DIR` differs from `GIT_COMMON`:** You are already inside a linked worktree (created by the Codex App, Claude Code's Agent tool, a previous skill run, or the user). Do NOT create another worktree. Instead:
+
+1. Run project setup (auto-detect package manager as in "Run Project Setup" below)
+2. Verify clean baseline (run tests as in "Verify Clean Baseline" below)
+3. Report with branch state:
+   - On a branch: "Already in an isolated workspace at `<path>` on branch `<name>`. Tests passing. Ready to implement."
+   - Detached HEAD: "Already in an isolated workspace at `<path>` (detached HEAD, externally managed). Tests passing. Note: branch creation needed at finish time. Ready to implement."
+
+After reporting, STOP. Do not continue to Directory Selection or Creation Steps.
+
+**If `GIT_DIR` equals `GIT_COMMON`:** Proceed with the full worktree creation flow below.
+
+**Sandbox fallback:** If you proceed to Creation Steps but `git worktree add -b` fails with a permission error (e.g., "Operation not permitted"), treat this as a late-detected restricted environment. Fall back to the behavior above — run setup and baseline tests in the current directory, report accordingly, and STOP.
+```
+
+- [ ] **Step 3: Verify the insertion**
+
+Read the file again. Confirm:
+- Step 0 appears between Overview and Directory Selection Process
+- The rest of the file (Directory Selection, Safety Verification, Creation Steps, etc.) is unchanged
+- No duplicate sections or broken markdown
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add skills/using-git-worktrees/SKILL.md
+git commit -m "feat(using-git-worktrees): add Step 0 environment detection (PRI-823)
+
+Skip worktree creation when already in a linked worktree. Includes
+sandbox fallback for permission errors on git worktree add."
+```
+
+---
+
+### Task 2: Update `using-git-worktrees` Integration section
+
+**Files:**
+- Modify: `skills/using-git-worktrees/SKILL.md:211-215` (Integration > Called by)
+
+- [ ] **Step 1: Update the three "Called by" entries**
+
+Change lines 212-214 from:
+
+```markdown
+- **brainstorming** (Phase 4) - REQUIRED when design is approved and implementation follows
+- **subagent-driven-development** - REQUIRED before executing any tasks
+- **executing-plans** - REQUIRED before executing any tasks
+```
+
+To:
+
+```markdown
+- **brainstorming** - REQUIRED: Ensures isolated workspace (creates one or verifies existing)
+- **subagent-driven-development** - REQUIRED: Ensures isolated workspace (creates one or verifies existing)
+- **executing-plans** - REQUIRED: Ensures isolated workspace (creates one or verifies existing)
+```
+
+- [ ] **Step 2: Verify the Integration section**
+
+Read the Integration section. Confirm all three entries are updated, "Pairs with" is unchanged.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add skills/using-git-worktrees/SKILL.md
+git commit -m "docs(using-git-worktrees): update Integration descriptions (PRI-823)
+
+Clarify that skill ensures a workspace exists, not that it always creates one."
+```
+
+---
+
+### Task 3: Add Step 1.5 to `finishing-a-development-branch`
+
+**Files:**
+- Modify: `skills/finishing-a-development-branch/SKILL.md:38` (insert after Step 1, before Step 2)
+
+- [ ] **Step 1: Read the current skill file**
+
+Read `skills/finishing-a-development-branch/SKILL.md` in full. Identify the insertion point: after "**If tests pass:** Continue to Step 2." (line 38) and before "### Step 2: Determine Base Branch" (line 40).
+
+- [ ] **Step 2: Insert Step 1.5 section**
+
+Insert the following between Step 1 and Step 2:
+
+```markdown
+### Step 1.5: Detect Environment
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+**Path A — `GIT_DIR` differs from `GIT_COMMON` AND `BRANCH` is empty (externally managed worktree, detached HEAD):**
+
+First, ensure all work is staged and committed (`git add` + `git commit`).
+
+Then present this to the user (do NOT present the 4-option menu):
+
+```
+Implementation complete. All tests passing.
+Current HEAD: <full-commit-sha>
+
+This workspace is externally managed (detached HEAD).
+I cannot create branches, push, or open PRs from here.
+
+⚠ These commits are on a detached HEAD. If you do not create a branch,
+they may be lost when this workspace is cleaned up.
+
+If your host application provides these controls:
+- "Create branch" — to name a branch, then commit/push/PR
+- "Hand off to local" — to move changes to your local checkout
+
+Suggested branch name: <ticket-id/short-description>
+Suggested commit message: <summary-of-work>
+```
+
+Branch name: use ticket ID if available (e.g., `pri-823/codex-compat`), otherwise slugify the first 5 words of the plan title, otherwise omit. Avoid sensitive content in branch names.
+
+Skip to Step 5 (cleanup is a no-op — see guard below).
+
+**Path B — `GIT_DIR` differs from `GIT_COMMON` AND `BRANCH` exists (externally managed worktree, named branch):**
+
+Proceed to Step 2 and present the 4-option menu as normal.
+
+**Path C — `GIT_DIR` equals `GIT_COMMON` (normal environment):**
+
+Proceed to Step 2 and present the 4-option menu as normal.
+```
+
+- [ ] **Step 3: Verify the insertion**
+
+Read the file again. Confirm:
+- Step 1.5 appears between Step 1 and Step 2
+- Steps 2-5 are unchanged
+- Path A handoff includes commit SHA and data loss warning
+- Paths B and C proceed to Step 2 normally
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add skills/finishing-a-development-branch/SKILL.md
+git commit -m "feat(finishing-a-development-branch): add Step 1.5 environment detection (PRI-823)
+
+Detect externally managed worktrees with detached HEAD and emit handoff
+payload instead of 4-option menu. Includes commit SHA and data loss warning."
+```
+
+---
+
+### Task 4: Add Step 5 cleanup guard to `finishing-a-development-branch`
+
+**Files:**
+- Modify: `skills/finishing-a-development-branch/SKILL.md` (Step 5: Cleanup Worktree — find by section heading, line numbers will have shifted after Task 3)
+
+- [ ] **Step 1: Read the current Step 5 section**
+
+Find the "### Step 5: Cleanup Worktree" section in `skills/finishing-a-development-branch/SKILL.md` (line numbers will have shifted after Task 3's insertion). The current Step 5 is:
+
+```markdown
+### Step 5: Cleanup Worktree
+
+**For Options 1, 2, 4:**
+
+Check if in worktree:
+```bash
+git worktree list | grep $(git branch --show-current)
+```
+
+If yes:
+```bash
+git worktree remove <worktree-path>
+```
+
+**For Option 3:** Keep worktree.
+```
+
+- [ ] **Step 2: Add the cleanup guard before existing logic**
+
+Replace the Step 5 section with:
+
+```markdown
+### Step 5: Cleanup Worktree
+
+**First, check if worktree is externally managed:**
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+```
+
+If `GIT_DIR` differs from `GIT_COMMON`: skip worktree removal — the host environment owns this workspace.
+
+**Otherwise, for Options 1 and 4:**
+
+Check if in worktree:
+```bash
+git worktree list | grep $(git branch --show-current)
+```
+
+If yes:
+```bash
+git worktree remove <worktree-path>
+```
+
+**For Option 3:** Keep worktree.
+```
+
+Note: the original text said "For Options 1, 2, 4" but the Quick Reference table and Common Mistakes section say "Options 1 & 4 only." This edit aligns Step 5 with those sections.
+
+- [ ] **Step 3: Verify the replacement**
+
+Read Step 5. Confirm:
+- Cleanup guard (re-detection) appears first
+- Existing removal logic preserved for non-externally-managed worktrees
+- "Options 1 and 4" (not "1, 2, 4") matches Quick Reference and Common Mistakes
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add skills/finishing-a-development-branch/SKILL.md
+git commit -m "feat(finishing-a-development-branch): add Step 5 cleanup guard (PRI-823)
+
+Re-detect externally managed worktree at cleanup time and skip removal.
+Also fixes pre-existing inconsistency: cleanup now correctly says
+Options 1 and 4 only, matching Quick Reference and Common Mistakes."
+```
+
+---
+
+### Task 5: Update Integration lines in `subagent-driven-development` and `executing-plans`
+
+**Files:**
+- Modify: `skills/subagent-driven-development/SKILL.md:268`
+- Modify: `skills/executing-plans/SKILL.md:68`
+
+- [ ] **Step 1: Update `subagent-driven-development`**
+
+Change line 268 from:
+```
+- **superpowers:using-git-worktrees** - REQUIRED: Set up isolated workspace before starting
+```
+To:
+```
+- **superpowers:using-git-worktrees** - REQUIRED: Ensures isolated workspace (creates one or verifies existing)
+```
+
+- [ ] **Step 2: Update `executing-plans`**
+
+Change line 68 from:
+```
+- **superpowers:using-git-worktrees** - REQUIRED: Set up isolated workspace before starting
+```
+To:
+```
+- **superpowers:using-git-worktrees** - REQUIRED: Ensures isolated workspace (creates one or verifies existing)
+```
+
+- [ ] **Step 3: Verify both files**
+
+Read line 268 of `skills/subagent-driven-development/SKILL.md` and line 68 of `skills/executing-plans/SKILL.md`. Confirm both say "Ensures isolated workspace (creates one or verifies existing)".
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add skills/subagent-driven-development/SKILL.md skills/executing-plans/SKILL.md
+git commit -m "docs(sdd, executing-plans): update worktree Integration descriptions (PRI-823)
+
+Clarify that using-git-worktrees ensures a workspace exists rather than
+always creating one."
+```
+
+---
+
+### Task 6: Add environment detection docs to `codex-tools.md`
+
+**Files:**
+- Modify: `skills/using-superpowers/references/codex-tools.md:25` (append at end)
+
+- [ ] **Step 1: Read the current file**
+
+Read `skills/using-superpowers/references/codex-tools.md` in full. Confirm it ends at line 25-26 after the multi_agent section.
+
+- [ ] **Step 2: Append two new sections**
+
+Add at the end of the file:
+
+```markdown
+
+## Environment Detection
+
+Skills that create worktrees or finish branches should detect their
+environment with read-only git commands before proceeding:
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+- `GIT_DIR != GIT_COMMON` → already in a linked worktree (skip creation)
+- `BRANCH` empty → detached HEAD (cannot branch/push/PR from sandbox)
+
+See `using-git-worktrees` Step 0 and `finishing-a-development-branch`
+Step 1.5 for how each skill uses these signals.
+
+## Codex App Finishing
+
+When the sandbox blocks branch/push operations (detached HEAD in an
+externally managed worktree), the agent commits all work and informs
+the user to use the App's native controls:
+
+- **"Create branch"** — names the branch, then commit/push/PR via App UI
+- **"Hand off to local"** — transfers work to the user's local checkout
+
+The agent can still run tests, stage files, and output suggested branch
+names, commit messages, and PR descriptions for the user to copy.
+```
+
+- [ ] **Step 3: Verify the additions**
+
+Read the full file. Confirm:
+- Two new sections appear after the existing content
+- Bash code block renders correctly (not escaped)
+- Cross-references to Step 0 and Step 1.5 are present
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add skills/using-superpowers/references/codex-tools.md
+git commit -m "docs(codex-tools): add environment detection and App finishing docs (PRI-823)
+
+Document the git-dir vs git-common-dir detection pattern and the Codex
+App's native finishing flow for skills that need to adapt."
+```
+
+---
+
+### Task 7: Automated test — environment detection
+
+**Files:**
+- Create: `tests/codex-app-compat/test-environment-detection.sh`
+
+- [ ] **Step 1: Create test directory**
+
+```bash
+mkdir -p tests/codex-app-compat
+```
+
+- [ ] **Step 2: Write the detection test script**
+
+Create `tests/codex-app-compat/test-environment-detection.sh`:
+
+```bash
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Test environment detection logic from PRI-823
+# Tests the git-dir vs git-common-dir comparison used by
+# using-git-worktrees Step 0 and finishing-a-development-branch Step 1.5
+
+PASS=0
+FAIL=0
+TEMP_DIR=$(mktemp -d)
+trap "rm -rf $TEMP_DIR" EXIT
+
+log_pass() { echo "  PASS: $1"; PASS=$((PASS + 1)); }
+log_fail() { echo "  FAIL: $1"; FAIL=$((FAIL + 1)); }
+
+# Helper: run detection and return "linked" or "normal"
+detect_worktree() {
+  local git_dir git_common
+  git_dir=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+  git_common=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+  if [ "$git_dir" != "$git_common" ]; then
+    echo "linked"
+  else
+    echo "normal"
+  fi
+}
+
+echo "=== Test 1: Normal repo detection ==="
+cd "$TEMP_DIR"
+git init test-repo > /dev/null 2>&1
+cd test-repo
+git commit --allow-empty -m "init" > /dev/null 2>&1
+result=$(detect_worktree)
+if [ "$result" = "normal" ]; then
+  log_pass "Normal repo detected as normal"
+else
+  log_fail "Normal repo detected as '$result' (expected 'normal')"
+fi
+
+echo "=== Test 2: Linked worktree detection ==="
+git worktree add "$TEMP_DIR/test-wt" -b test-branch > /dev/null 2>&1
+cd "$TEMP_DIR/test-wt"
+result=$(detect_worktree)
+if [ "$result" = "linked" ]; then
+  log_pass "Linked worktree detected as linked"
+else
+  log_fail "Linked worktree detected as '$result' (expected 'linked')"
+fi
+
+echo "=== Test 3: Detached HEAD detection ==="
+git checkout --detach HEAD > /dev/null 2>&1
+branch=$(git branch --show-current)
+if [ -z "$branch" ]; then
+  log_pass "Detached HEAD: branch is empty"
+else
+  log_fail "Detached HEAD: branch is '$branch' (expected empty)"
+fi
+
+echo "=== Test 4: Linked worktree + detached HEAD (Codex App simulation) ==="
+result=$(detect_worktree)
+branch=$(git branch --show-current)
+if [ "$result" = "linked" ] && [ -z "$branch" ]; then
+  log_pass "Codex App simulation: linked + detached HEAD"
+else
+  log_fail "Codex App simulation: result='$result', branch='$branch'"
+fi
+
+echo "=== Test 5: Cleanup guard — linked worktree should NOT remove ==="
+cd "$TEMP_DIR/test-wt"
+result=$(detect_worktree)
+if [ "$result" = "linked" ]; then
+  log_pass "Cleanup guard: linked worktree correctly detected (would skip removal)"
+else
+  log_fail "Cleanup guard: expected 'linked', got '$result'"
+fi
+
+echo "=== Test 6: Cleanup guard — main repo SHOULD remove ==="
+cd "$TEMP_DIR/test-repo"
+result=$(detect_worktree)
+if [ "$result" = "normal" ]; then
+  log_pass "Cleanup guard: main repo correctly detected (would proceed with removal)"
+else
+  log_fail "Cleanup guard: expected 'normal', got '$result'"
+fi
+
+# Cleanup worktree before temp dir removal
+cd "$TEMP_DIR/test-repo"
+git worktree remove "$TEMP_DIR/test-wt" > /dev/null 2>&1 || true
+
+echo ""
+echo "=== Results: $PASS passed, $FAIL failed ==="
+if [ "$FAIL" -gt 0 ]; then
+  exit 1
+fi
+```
+
+- [ ] **Step 3: Make it executable and run it**
+
+```bash
+chmod +x tests/codex-app-compat/test-environment-detection.sh
+./tests/codex-app-compat/test-environment-detection.sh
+```
+
+Expected output: 6 passed, 0 failed.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add tests/codex-app-compat/test-environment-detection.sh
+git commit -m "test: add environment detection tests for Codex App compat (PRI-823)
+
+Tests git-dir vs git-common-dir comparison in normal repo, linked
+worktree, detached HEAD, and cleanup guard scenarios."
+```
+
+---
+
+### Task 8: Final verification
+
+**Files:**
+- Read: all 5 modified skill files
+
+- [ ] **Step 1: Run the automated detection tests**
+
+```bash
+./tests/codex-app-compat/test-environment-detection.sh
+```
+
+Expected: 6 passed, 0 failed.
+
+- [ ] **Step 2: Read each modified file and verify changes**
+
+Read each file end-to-end:
+- `skills/using-git-worktrees/SKILL.md` — Step 0 present, rest unchanged
+- `skills/finishing-a-development-branch/SKILL.md` — Step 1.5 present, cleanup guard present, rest unchanged
+- `skills/subagent-driven-development/SKILL.md` — line 268 updated
+- `skills/executing-plans/SKILL.md` — line 68 updated
+- `skills/using-superpowers/references/codex-tools.md` — two new sections at end
+
+- [ ] **Step 3: Verify no unintended changes**
+
+```bash
+git diff --stat HEAD~7
+```
+
+Should show exactly 6 files changed (5 skill files + 1 test file). No other files modified.
+
+- [ ] **Step 4: Run existing test suite**
+
+If test runner exists:
+```bash
+# Run skill-triggering tests
+./tests/skill-triggering/run-all.sh 2>/dev/null || echo "Skill triggering tests not available in this environment"
+
+# Run SDD integration test
+./tests/claude-code/test-subagent-driven-development-integration.sh 2>/dev/null || echo "SDD integration test not available in this environment"
+```
+
+Note: these tests require Claude Code with `--dangerously-skip-permissions`. If not available, document that regression tests should be run manually.

docs/superpowers/plans/2026-04-06-worktree-rototill.md

@@ -0,0 +1,879 @@
+# Worktree Rototill Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Make superpowers defer to native harness worktree systems when available, fall back to manual git worktrees when not, and fix three known finishing bugs.
+
+**Architecture:** Two skill files are rewritten (`using-git-worktrees`, `finishing-a-development-branch`), three files get one-line integration updates (`executing-plans`, `subagent-driven-development`, `writing-plans`). The core change is adding detection (`GIT_DIR != GIT_COMMON`) and a native-tool-first creation path. These are markdown skill instruction files, not application code — "tests" are agent behavior tests using the testing-skills-with-subagents TDD framework.
+
+**Tech Stack:** Markdown (skill files), bash (test scripts), Claude Code CLI (`claude -p` for headless testing)
+
+**Spec:** `docs/superpowers/specs/2026-04-06-worktree-rototill-design.md`
+
+---
+
+### Task 1: GATE — TDD Validation of Step 1a (Native Tool Preference)
+
+Step 1a is the load-bearing assumption of the entire design. If agents don't prefer native worktree tools over `git worktree add`, the spec fails. Validate this FIRST, before touching any skill files.
+
+**Files:**
+- Create: `tests/claude-code/test-worktree-native-preference.sh`
+- Read: `skills/using-git-worktrees/SKILL.md` (current version, for RED baseline)
+- Read: `tests/claude-code/test-helpers.sh` (for `run_claude`, `assert_contains`, etc.)
+- Read: `skills/writing-skills/testing-skills-with-subagents.md` (TDD framework)
+
+**This task is a gate.** If the GREEN phase fails after 2 REFACTOR iterations, STOP. Do not proceed to Task 2. Report back — the creation approach needs redesign.
+
+- [ ] **Step 1: Write the RED baseline test script**
+
+Create the test script that will run scenarios both WITHOUT and WITH the updated skill text. The RED phase runs against the current skill (which has no Step 1a).
+
+```bash
+#!/usr/bin/env bash
+# Test: Does the agent prefer native worktree tools (EnterWorktree) over git worktree add?
+# Framework: RED-GREEN-REFACTOR per testing-skills-with-subagents.md
+#
+# RED:   Current skill has no native tool preference. Agent should use git worktree add.
+# GREEN: Updated skill has Step 1a. Agent should use EnterWorktree on Claude Code.
+
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "$SCRIPT_DIR/test-helpers.sh"
+
+# Pressure scenario: realistic implementation task where agent needs isolation
+SCENARIO='IMPORTANT: This is a real task. Choose and act.
+
+You need to implement a small feature (add a "version" field to package.json).
+This should be done in an isolated workspace to protect the main branch.
+
+You have the using-git-worktrees skill available. Set up the isolated workspace now.
+Do NOT actually implement the feature — just set up the workspace and report what you did.
+
+Respond with EXACTLY what tool/command you used to create the workspace.'
+
+echo "=== Worktree Native Preference Test ==="
+echo ""
+
+# Phase selection
+PHASE="${1:-red}"
+
+if [ "$PHASE" = "red" ]; then
+    echo "--- RED PHASE: Running WITHOUT Step 1a (current skill) ---"
+    echo "Expected: Agent uses 'git worktree add' (no native tool awareness)"
+    echo ""
+
+    test_dir=$(create_test_project)
+    cd "$test_dir"
+    git init && git commit --allow-empty -m "init"
+    mkdir -p .worktrees
+
+    output=$(run_claude "$SCENARIO" 120)
+
+    echo "Agent output:"
+    echo "$output"
+    echo ""
+
+    # RED expectation: agent uses git worktree add (current behavior)
+    if echo "$output" | grep -qi "EnterWorktree"; then
+        echo "[UNEXPECTED] Agent used EnterWorktree WITHOUT Step 1a — skill may not be needed"
+        echo "Investigate: is Claude Code's default behavior already correct?"
+    else
+        echo "[RED CONFIRMED] Agent did NOT use EnterWorktree"
+        assert_contains "$output" "git worktree" "Agent used git worktree (expected in RED)"
+    fi
+
+    cleanup_test_project "$test_dir"
+
+elif [ "$PHASE" = "green" ]; then
+    echo "--- GREEN PHASE: Running WITH Step 1a (updated skill) ---"
+    echo "Expected: Agent uses EnterWorktree instead of git worktree add"
+    echo ""
+
+    test_dir=$(create_test_project)
+    cd "$test_dir"
+    git init && git commit --allow-empty -m "init"
+
+    output=$(run_claude "$SCENARIO" 120)
+
+    echo "Agent output:"
+    echo "$output"
+    echo ""
+
+    # GREEN expectation: agent uses EnterWorktree
+    assert_contains "$output" "EnterWorktree" "Agent used native EnterWorktree tool"
+    assert_not_contains "$output" "git worktree add" "Agent did NOT fall back to git worktree add"
+
+    cleanup_test_project "$test_dir"
+
+elif [ "$PHASE" = "pressure" ]; then
+    echo "--- PRESSURE PHASE: Multiple pressures to skip native tools ---"
+    echo ""
+
+    PRESSURE_SCENARIO='IMPORTANT: This is a real task. Choose and act.
+
+You need to set up an isolated workspace URGENTLY. Production is impacted and
+the fix needs to go in a worktree. You know git worktree add works reliably.
+The .worktrees/ directory already exists and is gitignored.
+
+You have the using-git-worktrees skill. Set up the workspace NOW.
+Speed matters. Report EXACTLY what tool/command you used.'
+
+    test_dir=$(create_test_project)
+    cd "$test_dir"
+    git init && git commit --allow-empty -m "init"
+    mkdir -p .worktrees
+    echo ".worktrees/" >> .gitignore
+
+    output=$(run_claude "$PRESSURE_SCENARIO" 120)
+
+    echo "Agent output:"
+    echo "$output"
+    echo ""
+
+    # Should STILL use EnterWorktree even under pressure
+    assert_contains "$output" "EnterWorktree" "Agent used native tool even under time pressure"
+    assert_not_contains "$output" "git worktree add" "Agent resisted falling back to git despite pressure"
+
+    cleanup_test_project "$test_dir"
+fi
+
+echo ""
+echo "=== Test Complete ==="
+```
+
+- [ ] **Step 2: Run RED phase — confirm agent uses git worktree add today**
+
+Run: `cd tests/claude-code && bash test-worktree-native-preference.sh red`
+
+Expected: `[RED CONFIRMED] Agent did NOT use EnterWorktree` — agent uses `git worktree add` because current skill has no native tool preference.
+
+Document the agent's exact output and any rationalizations verbatim. This is the baseline failure the skill must fix.
+
+- [ ] **Step 3: If RED confirmed, proceed. Write the Step 1a skill text.**
+
+Create a temporary test version of the skill with ONLY the Step 1a addition (minimal change to isolate the variable). Add this section to the top of the skill's creation instructions, BEFORE the existing directory selection process:
+
+```markdown
+## Step 1: Create Isolated Workspace
+
+**You have two mechanisms. Try them in this order.**
+
+### 1a. Native Worktree Tools (preferred)
+
+If your platform provides a worktree or workspace-isolation tool, use it. You know your own toolkit — the skill does not need to name specific tools. Native tools handle directory placement, branch creation, and cleanup automatically.
+
+After using a native tool, skip to Step 3 (Project Setup).
+
+### 1b. Git Worktree Fallback
+
+If no native tool is available, create a worktree manually using git.
+```
+
+- [ ] **Step 4: Run GREEN phase — confirm agent now uses EnterWorktree**
+
+Run: `cd tests/claude-code && bash test-worktree-native-preference.sh green`
+
+Expected: `[PASS] Agent used native EnterWorktree tool`
+
+If FAIL: Document the agent's exact output and rationalizations. This is a REFACTOR signal — the Step 1a text needs revision. Try up to 2 REFACTOR iterations. If still failing after 2 iterations, STOP and report back.
+
+- [ ] **Step 5: Run PRESSURE phase — confirm agent resists fallback under pressure**
+
+Run: `cd tests/claude-code && bash test-worktree-native-preference.sh pressure`
+
+Expected: `[PASS] Agent used native tool even under time pressure`
+
+If FAIL: Document rationalizations verbatim. Add explicit counters to Step 1a text (e.g., a Red Flag entry: "Never use git worktree add when your platform provides a native worktree tool"). Re-run.
+
+- [ ] **Step 6: Commit test script**
+
+```bash
+git add tests/claude-code/test-worktree-native-preference.sh
+git commit -m "test: add RED/GREEN validation for native worktree preference (PRI-974)
+
+Gate test for Step 1a — validates agents prefer EnterWorktree over
+git worktree add on Claude Code. Must pass before skill rewrite."
+```
+
+---
+
+### Task 2: Rewrite `using-git-worktrees` SKILL.md
+
+Full rewrite of the creation skill. Replaces the existing file entirely.
+
+**Files:**
+- Modify: `skills/using-git-worktrees/SKILL.md` (full rewrite, 219 lines → ~210 lines)
+
+**Depends on:** Task 1 GREEN passing.
+
+- [ ] **Step 1: Write the complete new SKILL.md**
+
+Replace the entire contents of `skills/using-git-worktrees/SKILL.md` with:
+
+```markdown
+---
+name: using-git-worktrees
+description: Use when starting feature work that needs isolation from current workspace or before executing implementation plans - ensures an isolated workspace exists via native tools or git worktree fallback
+---
+
+# Using Git Worktrees
+
+## Overview
+
+Ensure work happens in an isolated workspace. Prefer your platform's native worktree tools. Fall back to manual git worktrees only when no native tool is available.
+
+**Core principle:** Detect existing isolation first. Then use native tools. Then fall back to git. Never fight the harness.
+
+**Announce at start:** "I'm using the using-git-worktrees skill to set up an isolated workspace."
+
+## Step 0: Detect Existing Isolation
+
+**Before creating anything, check if you are already in an isolated workspace.**
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+**Submodule guard:** `GIT_DIR != GIT_COMMON` is also true inside git submodules. Before concluding "already in a worktree," verify you are not in a submodule:
+
+```bash
+# If this returns a path, you're in a submodule, not a worktree — proceed to Step 1
+git rev-parse --show-superproject-working-tree 2>/dev/null
+```
+
+**If `GIT_DIR != GIT_COMMON` (and not a submodule):** You are already in a linked worktree. Skip to Step 3 (Project Setup). Do NOT create another worktree.
+
+Report with branch state:
+- On a branch: "Already in isolated workspace at `<path>` on branch `<name>`."
+- Detached HEAD: "Already in isolated workspace at `<path>` (detached HEAD, externally managed). Branch creation needed at finish time."
+
+**If `GIT_DIR == GIT_COMMON` (or in a submodule):** You are in a normal repo checkout.
+
+Has the user already indicated their worktree preference in your instructions? If not, ask for consent before creating a worktree:
+
+> "Would you like me to set up an isolated worktree? It protects your current branch from changes."
+
+Honor any existing declared preference without asking. If the user declines consent, work in place and skip to Step 3.
+
+## Step 1: Create Isolated Workspace
+
+**You have two mechanisms. Try them in this order.**
+
+### 1a. Native Worktree Tools (preferred)
+
+If your platform provides a worktree or workspace-isolation tool, use it. You know your own toolkit — the skill does not need to name specific tools. Native tools handle directory placement, branch creation, and cleanup automatically.
+
+After using a native tool, skip to Step 3 (Project Setup).
+
+### 1b. Git Worktree Fallback
+
+If no native tool is available, create a worktree manually using git.
+
+#### Directory Selection
+
+Follow this priority order:
+
+1. **Check existing directories:**
+   ```bash
+   ls -d .worktrees 2>/dev/null     # Preferred (hidden)
+   ls -d worktrees 2>/dev/null      # Alternative
+   ```
+   If found, use that directory. If both exist, `.worktrees` wins.
+
+2. **Check for existing global directory:**
+   ```bash
+   project=$(basename "$(git rev-parse --show-toplevel)")
+   ls -d ~/.config/superpowers/worktrees/$project 2>/dev/null
+   ```
+   If found, use it (backward compatibility with legacy global path).
+
+3. **Check your instructions for a worktree directory preference.** If specified, use it without asking.
+
+4. **Default to `.worktrees/`.**
+
+#### Safety Verification (project-local directories only)
+
+**MUST verify directory is ignored before creating worktree:**
+
+```bash
+git check-ignore -q .worktrees 2>/dev/null || git check-ignore -q worktrees 2>/dev/null
+```
+
+**If NOT ignored:** Add to .gitignore, commit the change, then proceed.
+
+**Why critical:** Prevents accidentally committing worktree contents to repository.
+
+Global directories (`~/.config/superpowers/worktrees/`) need no verification.
+
+#### Create the Worktree
+
+```bash
+project=$(basename "$(git rev-parse --show-toplevel)")
+
+# Determine path based on chosen location
+# For project-local: path="$LOCATION/$BRANCH_NAME"
+# For global: path="~/.config/superpowers/worktrees/$project/$BRANCH_NAME"
+
+git worktree add "$path" -b "$BRANCH_NAME"
+cd "$path"
+```
+
+#### Hooks Awareness
+
+Git worktrees do not inherit the parent repo's hooks directory. After creating the worktree, symlink hooks from the main repo if they exist:
+
+```bash
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+if [ -d "$MAIN_ROOT/.git/hooks" ]; then
+    ln -sf "$MAIN_ROOT/.git/hooks" "$path/.git/hooks"
+fi
+```
+
+This prevents pre-commit checks, linters, and other hooks from silently stopping when work moves to a worktree.
+
+**Sandbox fallback:** If `git worktree add` fails with a permission error (sandbox denial), treat this as a restricted environment. Skip creation, run setup and baseline tests in the current directory, report accordingly.
+
+## Step 3: Project Setup
+
+Auto-detect and run appropriate setup:
+
+```bash
+# Node.js
+if [ -f package.json ]; then npm install; fi
+
+# Rust
+if [ -f Cargo.toml ]; then cargo build; fi
+
+# Python
+if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+if [ -f pyproject.toml ]; then poetry install; fi
+
+# Go
+if [ -f go.mod ]; then go mod download; fi
+```
+
+## Step 4: Verify Clean Baseline
+
+Run tests to ensure workspace starts clean:
+
+```bash
+# Use project-appropriate command
+npm test / cargo test / pytest / go test ./...
+```
+
+**If tests fail:** Report failures, ask whether to proceed or investigate.
+
+**If tests pass:** Report ready.
+
+### Report
+
+```
+Worktree ready at <full-path>
+Tests passing (<N> tests, 0 failures)
+Ready to implement <feature-name>
+```
+
+## Quick Reference
+
+| Situation | Action |
+|-----------|--------|
+| Already in linked worktree | Skip creation (Step 0) |
+| In a submodule | Treat as normal repo (Step 0 guard) |
+| Native worktree tool available | Use it (Step 1a) |
+| No native tool | Git worktree fallback (Step 1b) |
+| `.worktrees/` exists | Use it (verify ignored) |
+| `worktrees/` exists | Use it (verify ignored) |
+| Both exist | Use `.worktrees/` |
+| Neither exists | Check instruction file, then default `.worktrees/` |
+| Global path exists | Use it (backward compat) |
+| Directory not ignored | Add to .gitignore + commit |
+| Permission error on create | Sandbox fallback, work in place |
+| Tests fail during baseline | Report failures + ask |
+| No package.json/Cargo.toml | Skip dependency install |
+
+## Common Mistakes
+
+### Fighting the harness
+
+- **Problem:** Using `git worktree add` when the platform already provides isolation
+- **Fix:** Step 0 detects existing isolation. Step 1a defers to native tools.
+
+### Skipping detection
+
+- **Problem:** Creating a nested worktree inside an existing one
+- **Fix:** Always run Step 0 before creating anything
+
+### Skipping ignore verification
+
+- **Problem:** Worktree contents get tracked, pollute git status
+- **Fix:** Always use `git check-ignore` before creating project-local worktree
+
+### Assuming directory location
+
+- **Problem:** Creates inconsistency, violates project conventions
+- **Fix:** Follow priority: existing > instruction file > default
+
+### Proceeding with failing tests
+
+- **Problem:** Can't distinguish new bugs from pre-existing issues
+- **Fix:** Report failures, get explicit permission to proceed
+
+## Red Flags
+
+**Never:**
+- Create a worktree when Step 0 detects existing isolation
+- Use git commands when a native worktree tool is available
+- Create worktree without verifying it's ignored (project-local)
+- Skip baseline test verification
+- Proceed with failing tests without asking
+
+**Always:**
+- Run Step 0 detection first
+- Prefer native tools over git fallback
+- Follow directory priority: existing > instruction file > default
+- Verify directory is ignored for project-local
+- Auto-detect and run project setup
+- Verify clean test baseline
+- Symlink hooks after creating worktree via 1b
+
+## Integration
+
+**Called by:**
+- **subagent-driven-development** - Ensures isolated workspace (creates one or verifies existing)
+- **executing-plans** - Ensures isolated workspace (creates one or verifies existing)
+- Any skill needing isolated workspace
+
+**Pairs with:**
+- **finishing-a-development-branch** - REQUIRED for cleanup after work complete
+```
+
+- [ ] **Step 2: Verify the file reads correctly**
+
+Run: `wc -l skills/using-git-worktrees/SKILL.md`
+
+Expected: Approximately 200-220 lines. Scan for any markdown formatting issues.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add skills/using-git-worktrees/SKILL.md
+git commit -m "feat: rewrite using-git-worktrees with detect-and-defer (PRI-974)
+
+Step 0: GIT_DIR != GIT_COMMON detection (skip if already isolated)
+Step 0 consent: opt-in prompt before creating worktree (#991)
+Step 1a: native tool preference (short, first, declarative)
+Step 1b: git worktree fallback with hooks symlink and legacy path compat
+Submodule guard prevents false detection
+Platform-neutral instruction file references (#1049)"
+```
+
+---
+
+### Task 3: Rewrite `finishing-a-development-branch` SKILL.md
+
+Full rewrite of the finishing skill. Adds environment detection, fixes three bugs, adds provenance-based cleanup.
+
+**Files:**
+- Modify: `skills/finishing-a-development-branch/SKILL.md` (full rewrite, 201 lines → ~220 lines)
+
+- [ ] **Step 1: Write the complete new SKILL.md**
+
+Replace the entire contents of `skills/finishing-a-development-branch/SKILL.md` with:
+
+```markdown
+---
+name: finishing-a-development-branch
+description: Use when implementation is complete, all tests pass, and you need to decide how to integrate the work - guides completion of development work by presenting structured options for merge, PR, or cleanup
+---
+
+# Finishing a Development Branch
+
+## Overview
+
+Guide completion of development work by presenting clear options and handling chosen workflow.
+
+**Core principle:** Verify tests → Detect environment → Present options → Execute choice → Clean up.
+
+**Announce at start:** "I'm using the finishing-a-development-branch skill to complete this work."
+
+## The Process
+
+### Step 1: Verify Tests
+
+**Before presenting options, verify tests pass:**
+
+```bash
+# Run project's test suite
+npm test / cargo test / pytest / go test ./...
+```
+
+**If tests fail:**
+```
+Tests failing (<N> failures). Must fix before completing:
+
+[Show failures]
+
+Cannot proceed with merge/PR until tests pass.
+```
+
+Stop. Don't proceed to Step 2.
+
+**If tests pass:** Continue to Step 2.
+
+### Step 2: Detect Environment
+
+**Determine workspace state before presenting options:**
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+```
+
+This determines which menu to show and how cleanup works:
+
+| State | Menu | Cleanup |
+|-------|------|---------|
+| `GIT_DIR == GIT_COMMON` (normal repo) | Standard 4 options | No worktree to clean up |
+| `GIT_DIR != GIT_COMMON`, named branch | Standard 4 options | Provenance-based (see Step 6) |
+| `GIT_DIR != GIT_COMMON`, detached HEAD | Reduced 3 options (no merge) | No cleanup (externally managed) |
+
+### Step 3: Determine Base Branch
+
+```bash
+# Try common base branches
+git merge-base HEAD main 2>/dev/null || git merge-base HEAD master 2>/dev/null
+```
+
+Or ask: "This branch split from main - is that correct?"
+
+### Step 4: Present Options
+
+**Normal repo and named-branch worktree — present exactly these 4 options:**
+
+```
+Implementation complete. What would you like to do?
+
+1. Merge back to <base-branch> locally
+2. Push and create a Pull Request
+3. Keep the branch as-is (I'll handle it later)
+4. Discard this work
+
+Which option?
+```
+
+**Detached HEAD — present exactly these 3 options:**
+
+```
+Implementation complete. You're on a detached HEAD (externally managed workspace).
+
+1. Push as new branch and create a Pull Request
+2. Keep as-is (I'll handle it later)
+3. Discard this work
+
+Which option?
+```
+
+**Don't add explanation** - keep options concise.
+
+### Step 5: Execute Choice
+
+#### Option 1: Merge Locally
+
+```bash
+# Get main repo root for CWD safety
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+
+# Merge first — verify success before removing anything
+git checkout <base-branch>
+git pull
+git merge <feature-branch>
+
+# Verify tests on merged result
+<test command>
+
+# Only after merge succeeds: remove worktree, then delete branch
+# (See Step 6 for worktree cleanup)
+git branch -d <feature-branch>
+```
+
+Then: Cleanup worktree (Step 6)
+
+#### Option 2: Push and Create PR
+
+```bash
+# Push branch
+git push -u origin <feature-branch>
+
+# Create PR
+gh pr create --title "<title>" --body "$(cat <<'EOF'
+## Summary
+<2-3 bullets of what changed>
+
+## Test Plan
+- [ ] <verification steps>
+EOF
+)"
+```
+
+**Do NOT clean up worktree** — user needs it alive to iterate on PR feedback.
+
+#### Option 3: Keep As-Is
+
+Report: "Keeping branch <name>. Worktree preserved at <path>."
+
+**Don't cleanup worktree.**
+
+#### Option 4: Discard
+
+**Confirm first:**
+```
+This will permanently delete:
+- Branch <name>
+- All commits: <commit-list>
+- Worktree at <path>
+
+Type 'discard' to confirm.
+```
+
+Wait for exact confirmation.
+
+If confirmed:
+```bash
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+```
+
+Then: Cleanup worktree (Step 6), then force-delete branch:
+```bash
+git branch -D <feature-branch>
+```
+
+### Step 6: Cleanup Workspace
+
+**Only runs for Options 1 and 4.** Options 2 and 3 always preserve the worktree.
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+WORKTREE_PATH=$(git rev-parse --show-toplevel)
+```
+
+**If `GIT_DIR == GIT_COMMON`:** Normal repo, no worktree to clean up. Done.
+
+**If worktree path is under `.worktrees/` or `~/.config/superpowers/worktrees/`:** Superpowers created this worktree — we own cleanup.
+
+```bash
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+git worktree remove "$WORKTREE_PATH"
+git worktree prune  # Self-healing: clean up any stale registrations
+```
+
+**Otherwise:** The host environment (harness) owns this workspace. Do NOT remove it. If your platform provides a workspace-exit tool, use it. Otherwise, leave the workspace in place.
+
+## Quick Reference
+
+| Option | Merge | Push | Keep Worktree | Cleanup Branch |
+|--------|-------|------|---------------|----------------|
+| 1. Merge locally | yes | - | - | yes |
+| 2. Create PR | - | yes | yes | - |
+| 3. Keep as-is | - | - | yes | - |
+| 4. Discard | - | - | - | yes (force) |
+
+## Common Mistakes
+
+**Skipping test verification**
+- **Problem:** Merge broken code, create failing PR
+- **Fix:** Always verify tests before offering options
+
+**Open-ended questions**
+- **Problem:** "What should I do next?" is ambiguous
+- **Fix:** Present exactly 4 structured options (or 3 for detached HEAD)
+
+**Cleaning up worktree for Option 2**
+- **Problem:** Remove worktree user needs for PR iteration
+- **Fix:** Only cleanup for Options 1 and 4
+
+**Deleting branch before removing worktree**
+- **Problem:** `git branch -d` fails because worktree still references the branch
+- **Fix:** Merge first, remove worktree, then delete branch
+
+**Running git worktree remove from inside the worktree**
+- **Problem:** Command fails silently when CWD is inside the worktree being removed
+- **Fix:** Always `cd` to main repo root before `git worktree remove`
+
+**Cleaning up harness-owned worktrees**
+- **Problem:** Removing a worktree the harness created causes phantom state
+- **Fix:** Only clean up worktrees under `.worktrees/` or `~/.config/superpowers/worktrees/`
+
+**No confirmation for discard**
+- **Problem:** Accidentally delete work
+- **Fix:** Require typed "discard" confirmation
+
+## Red Flags
+
+**Never:**
+- Proceed with failing tests
+- Merge without verifying tests on result
+- Delete work without confirmation
+- Force-push without explicit request
+- Remove a worktree before confirming merge success
+- Clean up worktrees you didn't create (provenance check)
+- Run `git worktree remove` from inside the worktree
+
+**Always:**
+- Verify tests before offering options
+- Detect environment before presenting menu
+- Present exactly 4 options (or 3 for detached HEAD)
+- Get typed confirmation for Option 4
+- Clean up worktree for Options 1 & 4 only
+- `cd` to main repo root before worktree removal
+- Run `git worktree prune` after removal
+
+## Integration
+
+**Called by:**
+- **subagent-driven-development** (Step 7) - After all tasks complete
+- **executing-plans** (Step 5) - After all batches complete
+
+**Pairs with:**
+- **using-git-worktrees** - Cleans up worktree created by that skill
+```
+
+- [ ] **Step 2: Verify the file reads correctly**
+
+Run: `wc -l skills/finishing-a-development-branch/SKILL.md`
+
+Expected: Approximately 210-230 lines.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add skills/finishing-a-development-branch/SKILL.md
+git commit -m "feat: rewrite finishing-a-development-branch with detect-and-defer (PRI-974)
+
+Step 2: environment detection (GIT_DIR != GIT_COMMON) before presenting menu
+Detached HEAD: reduced 3-option menu (no merge from detached HEAD)
+Provenance-based cleanup: .worktrees/ = ours, anything else = hands off
+Bug #940: Option 2 no longer cleans up worktree
+Bug #999: merge -> verify -> remove worktree -> delete branch
+Bug #238: cd to main repo root before git worktree remove
+Stale worktree pruning after removal (git worktree prune)"
+```
+
+---
+
+### Task 4: Integration Updates
+
+One-line changes to three files that reference `using-git-worktrees`.
+
+**Files:**
+- Modify: `skills/executing-plans/SKILL.md:68`
+- Modify: `skills/subagent-driven-development/SKILL.md:268`
+- Modify: `skills/writing-plans/SKILL.md:16`
+
+- [ ] **Step 1: Update executing-plans integration line**
+
+In `skills/executing-plans/SKILL.md`, change line 68 from:
+
+```markdown
+- **superpowers:using-git-worktrees** - REQUIRED: Set up isolated workspace before starting
+```
+
+to:
+
+```markdown
+- **superpowers:using-git-worktrees** - Ensures isolated workspace (creates one or verifies existing)
+```
+
+- [ ] **Step 2: Update subagent-driven-development integration line**
+
+In `skills/subagent-driven-development/SKILL.md`, change line 268 from:
+
+```markdown
+- **superpowers:using-git-worktrees** - REQUIRED: Set up isolated workspace before starting
+```
+
+to:
+
+```markdown
+- **superpowers:using-git-worktrees** - Ensures isolated workspace (creates one or verifies existing)
+```
+
+- [ ] **Step 3: Update writing-plans context line**
+
+In `skills/writing-plans/SKILL.md`, change line 16 from:
+
+```markdown
+**Context:** This should be run in a dedicated worktree (created by brainstorming skill).
+```
+
+to:
+
+```markdown
+**Context:** If working in an isolated worktree, it should have been created via the using-git-worktrees skill at execution time.
+```
+
+- [ ] **Step 4: Commit all three**
+
+```bash
+git add skills/executing-plans/SKILL.md skills/subagent-driven-development/SKILL.md skills/writing-plans/SKILL.md
+git commit -m "fix: update worktree integration references across skills (PRI-974)
+
+Remove REQUIRED language from executing-plans and subagent-driven-development.
+Consent and detection now live inside using-git-worktrees itself.
+Fix stale 'created by brainstorming' claim in writing-plans."
+```
+
+---
+
+### Task 5: End-to-End Validation
+
+Verify the full rewritten skills work together. Run the existing test suite plus manual verification.
+
+**Files:**
+- Read: `tests/claude-code/run-skill-tests.sh`
+- Read: `skills/using-git-worktrees/SKILL.md` (verify final state)
+- Read: `skills/finishing-a-development-branch/SKILL.md` (verify final state)
+
+- [ ] **Step 1: Run existing test suite**
+
+Run: `cd tests/claude-code && bash run-skill-tests.sh`
+
+Expected: All existing tests pass. If any fail, investigate — the integration changes (Task 4) may have broken a content assertion.
+
+- [ ] **Step 2: Re-run Step 1a GREEN test**
+
+Run: `cd tests/claude-code && bash test-worktree-native-preference.sh green`
+
+Expected: PASS — agent still uses EnterWorktree with the final skill text (not just the minimal Step 1a addition from Task 1).
+
+- [ ] **Step 3: Manual verification — read both rewritten skills end-to-end**
+
+Read `skills/using-git-worktrees/SKILL.md` and `skills/finishing-a-development-branch/SKILL.md` in their entirety. Check:
+
+1. No references to old behavior (hardcoded `CLAUDE.md`, interactive directory prompt, "REQUIRED" language)
+2. Step numbering is consistent within each file
+3. Quick Reference tables match the prose
+4. Integration sections cross-reference correctly
+5. No markdown formatting issues
+
+- [ ] **Step 4: Verify git status is clean**
+
+Run: `git status`
+
+Expected: Clean working tree. All changes committed across Tasks 1-4.
+
+- [ ] **Step 5: Final commit if any fixups needed**
+
+If manual verification found issues, fix them and commit:
+
+```bash
+git add -A
+git commit -m "fix: address review findings in worktree skill rewrite (PRI-974)"
+```
+
+If no issues found, skip this step.

docs/superpowers/specs/2026-03-23-codex-app-compatibility-design.md

@@ -0,0 +1,244 @@
+# Codex App Compatibility: Worktree and Finishing Skill Adaptation
+
+Make superpowers skills work in the Codex App's sandboxed worktree environment without breaking existing Claude Code or Codex CLI behavior.
+
+**Ticket:** PRI-823
+
+## Motivation
+
+The Codex App runs agents inside git worktrees it manages — detached HEAD, located under `$CODEX_HOME/worktrees/`, with a Seatbelt sandbox that blocks `git checkout -b`, `git push`, and network access. Three superpowers skills assume unrestricted git access: `using-git-worktrees` creates manual worktrees with named branches, `finishing-a-development-branch` merges/pushes/PRs by branch name, and `subagent-driven-development` requires both.
+
+The Codex CLI (open source terminal tool) does NOT have this conflict — it has no built-in worktree management. Our manual worktree approach fills an isolation gap there. The problem is specifically with the Codex App.
+
+## Empirical Findings
+
+Tested in the Codex App on 2026-03-23:
+
+| Operation | workspace-write sandbox | Full access sandbox |
+|---|---|---|
+| `git add` | Works | Works |
+| `git commit` | Works | Works |
+| `git checkout -b` | **Blocked** (can't write `.git/refs/heads/`) | Works |
+| `git push` | **Blocked** (network + `.git/refs/remotes/`) | Works |
+| `gh pr create` | **Blocked** (network) | Works |
+| `git status/diff/log` | Works | Works |
+
+Additional findings:
+- `spawn_agent` subagents **share** the parent thread's filesystem (confirmed via marker file test)
+- "Create branch" button appears in the App header regardless of which branch the worktree was started from
+- The App's native finishing flow: Create branch → Commit modal → Commit and push / Commit and create PR
+- `network_access = true` config is silently broken on macOS (issue #10390)
+
+## Design: Read-Only Environment Detection
+
+Three read-only git commands detect the environment without side effects:
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+Two signals derived:
+
+- **IN_LINKED_WORKTREE:** `GIT_DIR != GIT_COMMON` — the agent is in a worktree created by something else (Codex App, Claude Code Agent tool, previous skill run, or the user)
+- **ON_DETACHED_HEAD:** `BRANCH` is empty — no named branch exists
+
+Why `git-dir != git-common-dir` instead of checking `show-toplevel`:
+- In a normal repo, both resolve to the same `.git` directory
+- In a linked worktree, `git-dir` is `.git/worktrees/<name>` while `git-common-dir` is `.git`
+- In a submodule, both are equal — avoiding a false positive that `show-toplevel` would produce
+- Resolving via `cd && pwd -P` handles the relative-path problem (`git-common-dir` returns `.git` relative in normal repos but absolute in worktrees) and symlinks (macOS `/tmp` → `/private/tmp`)
+
+### Decision Matrix
+
+| Linked Worktree? | Detached HEAD? | Environment | Action |
+|---|---|---|---|
+| No | No | Claude Code / Codex CLI / normal git | Full skill behavior (unchanged) |
+| Yes | Yes | Codex App worktree (workspace-write) | Skip worktree creation; handoff payload at finish |
+| Yes | No | Codex App (Full access) or manual worktree | Skip worktree creation; full finishing flow |
+| No | Yes | Unusual (manual detached HEAD) | Create worktree normally; warn at finish |
+
+## Changes
+
+### 1. `using-git-worktrees/SKILL.md` — Add Step 0 (~12 lines)
+
+New section between "Overview" and "Directory Selection Process":
+
+**Step 0: Check if Already in an Isolated Workspace**
+
+Run the detection commands. If `GIT_DIR != GIT_COMMON`, skip worktree creation entirely. Instead:
+1. Skip to "Run Project Setup" subsection under Creation Steps — `npm install` etc. is idempotent, worth running for safety
+2. Then "Verify Clean Baseline" — run tests
+3. Report with branch state:
+   - On a branch: "Already in an isolated workspace at `<path>` on branch `<name>`. Tests passing. Ready to implement."
+   - Detached HEAD: "Already in an isolated workspace at `<path>` (detached HEAD, externally managed). Tests passing. Note: branch creation needed at finish time. Ready to implement."
+
+If `GIT_DIR == GIT_COMMON`, proceed with the full worktree creation flow (unchanged).
+
+Safety verification (.gitignore check) is skipped when Step 0 fires — irrelevant for externally-created worktrees.
+
+Update the Integration section's "Called by" entries. Change the description on each from context-specific text to: "Ensures isolated workspace (creates one or verifies existing)". For example, the `subagent-driven-development` entry changes from "REQUIRED: Set up isolated workspace before starting" to "REQUIRED: Ensures isolated workspace (creates one or verifies existing)".
+
+**Sandbox fallback:** If `GIT_DIR == GIT_COMMON` and the skill proceeds to Creation Steps, but `git worktree add -b` fails with a permission error (e.g., Seatbelt sandbox denial), treat this as a late-detected restricted environment. Fall back to the Step 0 "already in workspace" behavior — skip creation, run setup and baseline tests in the current directory, report accordingly.
+
+After reporting in Step 0, STOP. Do not continue to Directory Selection or Creation Steps.
+
+**Everything else unchanged:** Directory Selection, Safety Verification, Creation Steps, Project Setup, Baseline Tests, Quick Reference, Common Mistakes, Red Flags.
+
+### 2. `finishing-a-development-branch/SKILL.md` — Add Step 1.5 + cleanup guard (~20 lines)
+
+**Step 1.5: Detect Environment** (after Step 1 "Verify Tests", before Step 2 "Determine Base Branch")
+
+Run the detection commands. Three paths:
+
+- **Path A** skips Steps 2 and 3 entirely (no base branch or options needed).
+- **Paths B and C** proceed through Step 2 (Determine Base Branch) and Step 3 (Present Options) as normal.
+
+**Path A — Externally managed worktree + detached HEAD** (`GIT_DIR != GIT_COMMON` AND `BRANCH` empty):
+
+First, ensure all work is staged and committed (`git add` + `git commit`). The Codex App's finishing controls operate on committed work.
+
+Then present this to the user (do NOT present the 4-option menu):
+
+```
+Implementation complete. All tests passing.
+Current HEAD: <full-commit-sha>
+
+This workspace is externally managed (detached HEAD).
+I cannot create branches, push, or open PRs from here.
+
+⚠ These commits are on a detached HEAD. If you do not create a branch,
+they may be lost when this workspace is cleaned up.
+
+If your host application provides these controls:
+- "Create branch" — to name a branch, then commit/push/PR
+- "Hand off to local" — to move changes to your local checkout
+
+Suggested branch name: <ticket-id/short-description>
+Suggested commit message: <summary-of-work>
+```
+
+Branch name derivation: use the ticket ID if available (e.g., `pri-823/codex-compat`), otherwise slugify the first 5 words of the plan title, otherwise omit the suggestion. Avoid including sensitive content (vulnerability descriptions, customer names) in branch names.
+
+Skip to Step 5 (cleanup is a no-op for externally managed worktrees).
+
+**Path B — Externally managed worktree + named branch** (`GIT_DIR != GIT_COMMON` AND `BRANCH` exists):
+
+Present the 4-option menu as normal. (The Step 5 cleanup guard will re-detect the externally managed state independently.)
+
+**Path C — Normal environment** (`GIT_DIR == GIT_COMMON`):
+
+Present the 4-option menu as today (unchanged).
+
+**Step 5 cleanup guard:**
+
+Re-run the `GIT_DIR` vs `GIT_COMMON` detection at cleanup time (do not rely on earlier skill output — the finishing skill may run in a different session). If `GIT_DIR != GIT_COMMON`, skip `git worktree remove` — the host environment owns this workspace.
+
+Otherwise, check and remove as today. Note: the existing Step 5 text says "For Options 1, 2, 4" but the Quick Reference table and Common Mistakes section say "Options 1 & 4 only." The new guard is added before this existing logic and does not change which options trigger cleanup.
+
+**Everything else unchanged:** Options 1-4 logic, Quick Reference, Common Mistakes, Red Flags.
+
+### 3. `subagent-driven-development/SKILL.md` and `executing-plans/SKILL.md` — 1 line edit each
+
+Both skills have an identical Integration section line. Change from:
+```
+- superpowers:using-git-worktrees - REQUIRED: Set up isolated workspace before starting
+```
+To:
+```
+- superpowers:using-git-worktrees - REQUIRED: Ensures isolated workspace (creates one or verifies existing)
+```
+
+**Everything else unchanged:** Dispatch/review loop, prompt templates, model selection, status handling, red flags.
+
+### 4. `codex-tools.md` — Add environment detection docs (~15 lines)
+
+Two new sections at the end:
+
+**Environment Detection:**
+
+```markdown
+## Environment Detection
+
+Skills that create worktrees or finish branches should detect their
+environment with read-only git commands before proceeding:
+
+\```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+\```
+
+- `GIT_DIR != GIT_COMMON` → already in a linked worktree (skip creation)
+- `BRANCH` empty → detached HEAD (cannot branch/push/PR from sandbox)
+
+See `using-git-worktrees` Step 0 and `finishing-a-development-branch`
+Step 1.5 for how each skill uses these signals.
+```
+
+**Codex App Finishing:**
+
+```markdown
+## Codex App Finishing
+
+When the sandbox blocks branch/push operations (detached HEAD in an
+externally managed worktree), the agent commits all work and informs
+the user to use the App's native controls:
+
+- **"Create branch"** — names the branch, then commit/push/PR via App UI
+- **"Hand off to local"** — transfers work to the user's local checkout
+
+The agent can still run tests, stage files, and output suggested branch
+names, commit messages, and PR descriptions for the user to copy.
+```
+
+## What Does NOT Change
+
+- `implementer-prompt.md`, `spec-reviewer-prompt.md`, `code-quality-reviewer-prompt.md` — subagent prompts untouched
+- `executing-plans/SKILL.md` — only the 1-line Integration description changes (same as `subagent-driven-development`); all runtime behavior is unchanged
+- `dispatching-parallel-agents/SKILL.md` — no worktree or finishing operations
+- `.codex/INSTALL.md` — installation process unchanged
+- The 4-option finishing menu — preserved exactly for Claude Code and Codex CLI
+- The full worktree creation flow — preserved exactly for non-worktree environments
+- Subagent dispatch/review/iterate loop — unchanged (filesystem sharing confirmed)
+
+## Scope Summary
+
+| File | Change |
+|---|---|
+| `skills/using-git-worktrees/SKILL.md` | +12 lines (Step 0) |
+| `skills/finishing-a-development-branch/SKILL.md` | +20 lines (Step 1.5 + cleanup guard) |
+| `skills/subagent-driven-development/SKILL.md` | 1 line edit |
+| `skills/executing-plans/SKILL.md` | 1 line edit |
+| `skills/using-superpowers/references/codex-tools.md` | +15 lines |
+
+~50 lines added/changed across 5 files. Zero new files. Zero breaking changes.
+
+## Future Considerations
+
+If a third skill needs the same detection pattern, extract it into a shared `references/environment-detection.md` file (Approach B). Not needed now — only 2 skills use it.
+
+## Test Plan
+
+### Automated (run in Claude Code after implementation)
+
+1. Normal repo detection — assert IN_LINKED_WORKTREE=false
+2. Linked worktree detection — `git worktree add` test worktree, assert IN_LINKED_WORKTREE=true
+3. Detached HEAD detection — `git checkout --detach`, assert ON_DETACHED_HEAD=true
+4. Finishing skill handoff output — verify handoff message (not 4-option menu) in restricted environment
+5. **Step 5 cleanup guard** — create a linked worktree (`git worktree add /tmp/test-cleanup -b test-cleanup`), `cd` into it, run the Step 5 cleanup detection (`GIT_DIR` vs `GIT_COMMON`), assert it would NOT call `git worktree remove`. Then `cd` back to main repo, run the same detection, assert it WOULD call `git worktree remove`. Clean up test worktree afterward.
+
+### Manual Codex App Tests (5 tests)
+
+1. Detection in Worktree thread (workspace-write) — verify GIT_DIR != GIT_COMMON, empty branch
+2. Detection in Worktree thread (Full access) — same detection, different sandbox behavior
+3. Finishing skill handoff format — verify agent emits handoff payload, not 4-option menu
+4. Full lifecycle — detection → commit → finishing detection → correct behavior → cleanup
+5. **Sandbox fallback in Local thread** — Start a Codex App **Local thread** (workspace-write sandbox). Prompt: "Use the superpowers skill `using-git-worktrees` to set up an isolated workspace for implementing a small change." Pre-check: `git checkout -b test-sandbox-check` should fail with `Operation not permitted`. Expected: the skill detects `GIT_DIR == GIT_COMMON` (normal repo), attempts `git worktree add -b`, hits Seatbelt denial, falls back to Step 0 "already in workspace" behavior — runs setup, baseline tests, reports ready from current directory. Pass: agent recovers gracefully without cryptic error messages. Fail: agent prints raw Seatbelt error, retries, or gives up with confusing output.
+
+### Regression
+
+- Existing Claude Code skill-triggering tests still pass
+- Existing subagent-driven-development integration tests still pass
+- Normal Claude Code session: full worktree creation + 4-option finishing still works

docs/superpowers/specs/2026-04-06-worktree-rototill-design.md

@@ -0,0 +1,342 @@
+# Worktree Rototill: Detect-and-Defer
+
+**Date:** 2026-04-06
+**Status:** Draft
+**Ticket:** PRI-974
+**Subsumes:** PRI-823 (Codex App compatibility)
+
+## Problem
+
+Superpowers is opinionated about worktree management — specific paths (`.worktrees/<branch>`), specific commands (`git worktree add`), specific cleanup (`git worktree remove`). Meanwhile, Claude Code, Codex App, Gemini CLI, and Cursor all provide native worktree support with their own paths, lifecycle management, and cleanup.
+
+This creates three failure modes:
+
+1. **Duplication** — on Claude Code, the skill does what `EnterWorktree`/`ExitWorktree` already does
+2. **Conflict** — on Codex App, the skill tries to create worktrees inside an already-managed worktree
+3. **Phantom state** — skill-created worktrees at `.worktrees/` are invisible to the harness; harness-created worktrees at `.claude/worktrees/` are invisible to the skill
+
+For harnesses without native support (Codex CLI, OpenCode, Copilot standalone), superpowers fills a real gap. The skill shouldn't go away — it should get out of the way when native support exists.
+
+## Goals
+
+1. Defer to native harness worktree systems when they exist
+2. Continue providing worktree support for harnesses that lack it
+3. Fix three known bugs in finishing-a-development-branch (#940, #999, #238)
+4. Make worktree creation opt-in rather than mandatory (#991)
+5. Replace hardcoded `CLAUDE.md` references with platform-neutral language (#1049)
+
+## Non-Goals
+
+- Per-worktree environment conventions (`.worktree-env.sh`, port offsetting) — Phase 4
+- PreToolUse hooks for path enforcement — Phase 4
+- Multi-repo worktree documentation — Phase 4
+- Brainstorming checklist changes for worktrees — Phase 4
+- `.superpowers-session.json` metadata tracking (interesting PR #997 idea, not needed for v1)
+- Hooks symlinking into worktrees (PR #965 idea, separate concern)
+
+## Design Principles
+
+### Detect state, not platform
+
+Use `GIT_DIR != GIT_COMMON` to determine "am I already in a worktree?" rather than sniffing environment variables to identify the harness. This is a stable git primitive (since git 2.5, 2015), works universally across all harnesses, and requires zero maintenance as new harnesses appear.
+
+### Declarative intent, prescriptive fallback
+
+The skill describes the goal ("ensure work happens in an isolated workspace") and defers to native tools when available. It prescribes specific git commands only as a fallback for harnesses without native worktree support. Step 1a comes first and names native tools explicitly (`EnterWorktree`, `WorktreeCreate`, `/worktree`, `--worktree`); Step 1b comes second with the git fallback. The original spec kept Step 1a abstract ("you know your own toolkit"), but TDD proved that agents anchor on Step 1b's concrete commands when Step 1a is too vague. Explicit tool naming and a consent-authorization bridge were required to make the preference reliable.
+
+### Provenance-based ownership
+
+Whoever creates the worktree owns its cleanup. If the harness created it, superpowers doesn't touch it. If superpowers created it (via git fallback), superpowers cleans it up. The heuristic: if the worktree lives under `.worktrees/` or `~/.config/superpowers/worktrees/`, superpowers owns it. Anything else (`.claude/worktrees/`, `~/.codex/worktrees/`, `.gemini/worktrees/`) belongs to the harness.
+
+## Design
+
+### 1. `using-git-worktrees` SKILL.md Rewrite
+
+The skill gains three new steps before creation and simplifies the creation flow.
+
+#### Step 0: Detect Existing Isolation
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+Three outcomes:
+
+| Condition | Meaning | Action |
+|-----------|---------|--------|
+| `GIT_DIR == GIT_COMMON` | Normal repo checkout | Proceed to Step 0.5 |
+| `GIT_DIR != GIT_COMMON`, named branch | Already in a linked worktree | Skip to Step 3 (project setup). Report: "Already in isolated workspace at `<path>` on branch `<name>`." |
+| `GIT_DIR != GIT_COMMON`, detached HEAD | Externally managed worktree (e.g., Codex App sandbox) | Skip to Step 3. Report: "Already in isolated workspace at `<path>` (detached HEAD, externally managed)." |
+
+Step 0 does not care who created the worktree or which harness is running. A worktree is a worktree regardless of origin.
+
+**Submodule guard:** `GIT_DIR != GIT_COMMON` is also true inside git submodules. Before concluding "already in a worktree," check that we're not in a submodule:
+
+```bash
+# If this returns a path, we're in a submodule, not a worktree
+git rev-parse --show-superproject-working-tree 2>/dev/null
+```
+
+If in a submodule, treat as `GIT_DIR == GIT_COMMON` (proceed to Step 0.5).
+
+#### Step 0.5: Consent
+
+When Step 0 finds no existing isolation (`GIT_DIR == GIT_COMMON`), ask before creating:
+
+> "Would you like me to set up an isolated worktree? This protects your current branch from changes. (y/n)"
+
+If yes, proceed to Step 1. If no, work in place — skip to Step 3 with no worktree.
+
+This step is skipped entirely when Step 0 detects existing isolation (no point asking about what already exists).
+
+#### Step 1a: Native Tools (preferred)
+
+> The user has asked for an isolated workspace (Step 0 consent). Check your available tools — do you have `EnterWorktree`, `WorktreeCreate`, a `/worktree` command, or a `--worktree` flag? If YES: the user's consent to create a worktree is your authorization to use it. Use it now and skip to Step 3.
+
+After using a native tool, skip to Step 3 (project setup).
+
+**Design note — TDD revision:** The original spec used a deliberately short, abstract Step 1a ("You know your own toolkit — the skill does not need to name specific tools"). TDD validation disproved this: agents anchored on Step 1b's concrete git commands and ignored the abstract guidance (2/6 pass rate). Three changes fixed it (50/50 pass rate across GREEN and PRESSURE tests):
+
+1. **Explicit tool naming** — listing `EnterWorktree`, `WorktreeCreate`, `/worktree`, `--worktree` by name transforms the decision from interpretation ("do I have a native tool?") into factual lookup ("is `EnterWorktree` in my tool list?"). Agents on platforms without these tools simply check, find nothing, and fall through to Step 1b. No false positives observed.
+2. **Consent bridge** — "the user's consent to create a worktree is your authorization to use it" directly addresses `EnterWorktree`'s tool-level guardrail ("ONLY when user explicitly asks"). Tool descriptions override skill instructions (Claude Code #29950), so the skill must frame user consent as the authorization the tool requires.
+3. **Red Flag entry** — naming the specific anti-pattern ("Use `git worktree add` when you have a native worktree tool — this is the #1 mistake") in the Red Flags section.
+
+File splitting (Step 1b in a separate skill) was tested and proven unnecessary. The anchoring problem is solved by the quality of Step 1a's text, not by physical separation of git commands. Control tests with the full 240-line skill (all git commands visible) passed 20/20.
+
+#### Step 1b: Git Worktree Fallback
+
+When no native tool is available, create a worktree manually.
+
+**Directory selection** (priority order):
+1. Check for existing `.worktrees/` or `worktrees/` directory — if found, use it. If both exist, `.worktrees/` wins.
+2. Check for existing `~/.config/superpowers/worktrees/<project>/` directory — if found, use it (backward compatibility with legacy global path).
+3. Check the project's agent instruction file (CLAUDE.md, GEMINI.md, AGENTS.md, .cursorrules, or equivalent) for a worktree directory preference.
+4. Default to `.worktrees/`.
+
+No interactive directory selection prompt. The global path (`~/.config/superpowers/worktrees/`) is no longer offered as a choice to new users, but existing worktrees at that location are detected and used for backward compatibility.
+
+**Safety verification** (project-local directories only):
+
+```bash
+git check-ignore -q .worktrees 2>/dev/null
+```
+
+If not ignored, add to `.gitignore` and commit before proceeding.
+
+**Create:**
+
+```bash
+git worktree add "$path" -b "$BRANCH_NAME"
+cd "$path"
+```
+
+**Hooks awareness:** Git worktrees do not inherit the parent repo's hooks directory. After creating a worktree via 1b, symlink the hooks directory from the main repo if one exists:
+
+```bash
+if [ -d "$MAIN_ROOT/.git/hooks" ]; then
+    ln -sf "$MAIN_ROOT/.git/hooks" "$path/.git/hooks"
+fi
+```
+
+This prevents pre-commit checks, linters, and other hooks from silently stopping when work moves to a worktree. (Idea from PR #965.)
+
+**Sandbox fallback:** If `git worktree add` fails with a permission error, treat as a restricted environment. Skip creation, work in current directory, proceed to Step 3.
+
+**Step numbering note:** The current skill has Steps 1-4 as a flat list. This redesign uses 0, 0.5, 1a, 1b, 3, 4. There is no Step 2 — it was the old monolithic "Create Isolated Workspace" which is now split into the 1a/1b structure. The implementation should renumber cleanly (e.g., 0 → "Step 0: Detect", 0.5 → within Step 0's flow, 1a/1b → "Step 1", 3 → "Step 2", 4 → "Step 3") or keep the current numbering with a note. Implementer's choice.
+
+#### Steps 3-4: Project Setup and Baseline Tests (unchanged)
+
+Regardless of which path created the workspace (Step 0 detected existing, Step 1a native tool, Step 1b git fallback, or no worktree at all), execution converges:
+
+- **Step 3:** Auto-detect and run project setup (`npm install`, `cargo build`, `pip install`, `go mod download`, etc.)
+- **Step 4:** Run the test suite. If tests fail, report failures and ask whether to proceed.
+
+### 2. `finishing-a-development-branch` SKILL.md Rewrite
+
+The finishing skill gains environment detection and fixes three bugs.
+
+#### Step 1: Verify Tests (unchanged)
+
+Run the project's test suite. If tests fail, stop. Don't offer completion options.
+
+#### Step 1.5: Detect Environment (new)
+
+Re-run the same detection as Step 0 in creation:
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+```
+
+Three paths:
+
+| State | Menu | Cleanup |
+|-------|------|---------|
+| `GIT_DIR == GIT_COMMON` (normal repo) | Standard 4 options | No worktree to clean up |
+| `GIT_DIR != GIT_COMMON`, named branch | Standard 4 options | Provenance-based (see Step 5) |
+| `GIT_DIR != GIT_COMMON`, detached HEAD | Reduced menu: push as new branch + PR, keep as-is, discard | No merge options (can't merge from detached HEAD) |
+
+#### Step 2: Determine Base Branch (unchanged)
+
+#### Step 3: Present Options
+
+**Normal repo and named-branch worktree:**
+
+1. Merge back to `<base-branch>` locally
+2. Push and create a Pull Request
+3. Keep the branch as-is (I'll handle it later)
+4. Discard this work
+
+**Detached HEAD:**
+
+1. Push as new branch and create a Pull Request
+2. Keep as-is (I'll handle it later)
+3. Discard this work
+
+#### Step 4: Execute Choice
+
+**Option 1 (Merge locally):**
+
+```bash
+# Get main repo root for CWD safety (Bug #238 fix)
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+
+# Merge first, verify success before removing anything
+git checkout <base-branch>
+git pull
+git merge <feature-branch>
+<run tests>
+
+# Only after merge succeeds: remove worktree, then delete branch (Bug #999 fix)
+git worktree remove "$WORKTREE_PATH"  # only if superpowers owns it
+git branch -d <feature-branch>
+```
+
+The order is critical: merge → verify → remove worktree → delete branch. The old skill deleted the branch before removing the worktree (which fails because the worktree still references the branch). The naive fix of removing the worktree first is also wrong — if the merge then fails, the working directory is gone and changes are lost.
+
+**Option 2 (Create PR):**
+
+Push branch, create PR. Do NOT clean up worktree — user needs it for PR iteration. (Bug #940 fix: remove contradictory "Then: Cleanup worktree" prose.)
+
+**Option 3 (Keep as-is):** No action.
+
+**Option 4 (Discard):** Require typed "discard" confirmation. Then remove worktree (if superpowers owns it), force-delete branch.
+
+#### Step 5: Cleanup (updated)
+
+```
+if GIT_DIR == GIT_COMMON:
+    # Normal repo, no worktree to clean up
+    done
+
+if worktree path is under .worktrees/ or ~/.config/superpowers/worktrees/:
+    # Superpowers created it — we own cleanup
+    cd to main repo root       # Bug #238 fix
+    git worktree remove <path>
+
+else:
+    # Harness created it — hands off
+    # If platform provides a workspace-exit tool, use it
+    # Otherwise, leave the worktree in place
+```
+
+Cleanup only runs for Options 1 and 4. Options 2 and 3 always preserve the worktree. (Bug #940 fix.)
+
+**Stale worktree pruning:** After any `git worktree remove`, run `git worktree prune` as a self-healing step. Worktree directories can get deleted out-of-band (e.g., by harness cleanup, manual `rm`, or `.claude/` cleanup), leaving stale registrations that cause confusing errors. One line, prevents silent rot. (Idea from PR #1072.)
+
+### 3. Integration Updates
+
+#### `subagent-driven-development` and `executing-plans`
+
+Both currently list `using-git-worktrees` as REQUIRED in their integration sections. Change to:
+
+> `using-git-worktrees` — Ensures isolated workspace (creates one or verifies existing)
+
+The skill itself now handles consent (Step 0.5) and detection (Step 0), so calling skills don't need to gate or prompt.
+
+#### `writing-plans`
+
+Remove the stale claim "should be run in a dedicated worktree (created by brainstorming skill)." Brainstorming is a design skill and does not create worktrees. The worktree prompt happens at execution time via `using-git-worktrees`.
+
+### 4. Platform-Neutral Instruction File References
+
+All instances of hardcoded `CLAUDE.md` in worktree-related skills are replaced with:
+
+> "your project's agent instruction file (CLAUDE.md, GEMINI.md, AGENTS.md, .cursorrules, or equivalent)"
+
+This applies to directory preference checks in Step 1b.
+
+## Bug Fixes (bundled)
+
+| Bug | Problem | Fix | Location |
+|-----|---------|-----|----------|
+| #940 | Option 2 prose says "Then: Cleanup worktree (Step 5)" but quick reference says keep it. Step 5 says "For Options 1, 2, 4" but Common Mistakes says "Options 1 and 4 only." | Remove cleanup from Option 2. Step 5 applies to Options 1 and 4 only. | finishing SKILL.md |
+| #999 | Option 1 deletes branch before removing worktree. `git branch -d` can fail because worktree still references the branch. | Reorder to: merge → verify tests → remove worktree → delete branch. Merge must succeed before anything is removed. | finishing SKILL.md |
+| #238 | `git worktree remove` fails silently if CWD is inside the worktree being removed. | Add CWD guard: `cd` to main repo root before `git worktree remove`. | finishing SKILL.md |
+
+## Issues Resolved
+
+| Issue | Resolution |
+|-------|-----------|
+| #940 | Direct fix (Bug #940) |
+| #991 | Opt-in consent in Step 0.5 |
+| #918 | Step 0 detection + Step 1.5 finishing detection |
+| #1009 | Resolved by Step 1a — agents use native tools (e.g., `EnterWorktree`) which create at harness-native paths. Depends on Step 1a working; see Risks. |
+| #999 | Direct fix (Bug #999) |
+| #238 | Direct fix (Bug #238) |
+| #1049 | Platform-neutral instruction file references |
+| #279 | Solved by detect-and-defer — native paths respected because we don't override them |
+| #574 | **Deferred.** Nothing in this spec touches the brainstorming skill where the bug lives. Full fix (adding a worktree step to brainstorming's checklist) is Phase 4. |
+
+## Risks
+
+### Step 1a is the load-bearing assumption — RESOLVED
+
+Step 1a — agents preferring native worktree tools over the git fallback — is the foundation the entire design rests on. If agents ignore Step 1a and fall through to Step 1b on harnesses with native support, detect-and-defer fails entirely.
+
+**Status:** This risk materialized during implementation. The original abstract Step 1a ("You know your own toolkit") failed at 2/6 on Claude Code. The TDD gate worked as designed — it caught the failure before any skill files were modified, preventing a broken release. Three REFACTOR iterations identified the root causes (agent anchoring on concrete commands, tool-description guardrail overriding skill instructions) and produced a fix validated at 50/50 across GREEN and PRESSURE tests. See Step 1a design note above for details.
+
+**Cross-platform validation:**
+
+As of 2026-04-06, Claude Code is the only harness with an agent-callable mid-session worktree tool (`EnterWorktree`). All others either create worktrees before the agent starts (Codex App, Gemini CLI, Cursor) or have no native worktree support (Codex CLI, OpenCode). Step 1a is forward-compatible: when other harnesses add agent-callable worktree tools, agents will match them against the named examples and use them without skill changes.
+
+| Harness | Current worktree model | Skill mechanism | Tested |
+|---------|----------------------|-----------------|--------|
+| Claude Code | Agent-callable `EnterWorktree` | Step 1a | 50/50 (GREEN + PRESSURE) |
+| Codex CLI | No native tool (shell only) | Step 1b git fallback | 6/6 (`codex exec`) |
+| Gemini CLI | Launch-time `--worktree` flag, no agent tool | Step 0 if launched with flag, Step 1b if not | Step 0: 1/1, Step 1b: 1/1 (`gemini -p`) |
+| Cursor Agent | User-facing `/worktree`, no agent tool | Step 0 if user activated, Step 1b if not | Step 0: 1/1, Step 1b: 1/1 (`cursor-agent -p`) |
+| Codex App | Platform-managed, detached HEAD, no agent tool | Step 0 detects existing | 1/1 simulated |
+| OpenCode | Detection only (`ctx.worktree`), no agent tool | Step 1b git fallback | Untested (no CLI access) |
+
+**Residual risks:**
+1. If Anthropic changes `EnterWorktree`'s tool description to be more restrictive (e.g., "Do not use based on skill instructions"), the consent bridge breaks. Worth filing an issue requesting that the tool description accommodate skill-driven invocation.
+2. When other harnesses add agent-callable worktree tools, they may use names not in Step 1a's list. The list should be updated as new tools appear. The generic phrasing ("a worktree or workspace-isolation tool") provides some forward coverage.
+
+### Provenance heuristic
+
+The `.worktrees/` or `~/.config/superpowers/worktrees/` = ours, anything else = hands off` heuristic works for every current harness. If a future harness adopts `.worktrees/` as its convention, we'd have a false positive (superpowers tries to clean up a harness-owned worktree). Similarly, if a user manually runs `git worktree add .worktrees/experiment` without superpowers, we'd incorrectly claim ownership. Both are low risk — every harness uses branded paths, and manual `.worktrees/` creation is unlikely — but worth noting.
+
+### Detached HEAD finishing
+
+The reduced menu for detached HEAD worktrees (no merge option) is correct for Codex App's sandbox model. If a user is in detached HEAD for another reason, the reduced menu still makes sense — you genuinely can't merge from detached HEAD without creating a branch first.
+
+## Implementation Notes
+
+Both skill files contain sections beyond the core steps that need updating during implementation:
+
+- **Frontmatter** (`name`, `description`): Update to reflect detect-and-defer behavior
+- **Quick Reference tables**: Rewrite to match new step structure and bug fixes
+- **Common Mistakes sections**: Update or remove items that reference old behavior (e.g., "Skip CLAUDE.md check" is now wrong)
+- **Red Flags sections**: Update to reflect new priorities (e.g., "Never create a worktree when Step 0 detects existing isolation")
+- **Integration sections**: Update cross-references between skills
+
+The spec describes *what changes*; the implementation plan will specify exact edits to these secondary sections.
+
+## Future Work (not in this spec)
+
+- **Phase 3 remainder:** `$TMPDIR` directory option (#666), setup docs for caching and env inheritance (#299)
+- **Phase 4:** PreToolUse hooks for path enforcement (#1040), per-worktree env conventions (#597), brainstorming checklist worktree step (#574), multi-repo documentation (#710)

docs/testing.md

@@ -149,8 +149,8 @@ python3 tests/claude-code/analyze-token-usage.py ~/.claude/projects/<project-dir
 Session transcripts are stored in `~/.claude/projects/` with the working directory path encoded:
 
 ```bash
-# Example for /Users/jesse/Documents/GitHub/superpowers/superpowers
-SESSION_DIR="$HOME/.claude/projects/-Users-jesse-Documents-GitHub-superpowers-superpowers"
+# Example for /Users/yourname/Documents/GitHub/superpowers/superpowers
+SESSION_DIR="$HOME/.claude/projects/-Users-yourname-Documents-GitHub-superpowers-superpowers"
 
 # Find recent sessions
 ls -lt "$SESSION_DIR"/*.jsonl | head -5

gemini-extension.json

@@ -1,6 +1,6 @@
 {
   "name": "superpowers",
   "description": "Core skills library: TDD, debugging, collaboration patterns, and proven techniques",
-  "version": "5.0.0",
+  "version": "5.0.6",
   "contextFileName": "GEMINI.md"
 }

hooks/session-start

@@ -35,23 +35,23 @@ warning_escaped=$(escape_for_json "$warning_message")
 session_context="<EXTREMELY_IMPORTANT>\nYou have superpowers.\n\n**Below is the full content of your 'superpowers:using-superpowers' skill - your introduction to using skills. For all other skills, use the 'Skill' tool:**\n\n${using_superpowers_escaped}\n\n${warning_escaped}\n</EXTREMELY_IMPORTANT>"
 
 # Output context injection as JSON.
-# Cursor hooks expect additional_context.
-# Claude Code hooks expect hookSpecificOutput.additionalContext.
-# Claude Code reads BOTH fields without deduplication, so we must only
-# emit the field consumed by the current platform to avoid double injection.
+# Cursor hooks expect additional_context (snake_case).
+# Claude Code hooks expect hookSpecificOutput.additionalContext (nested).
+# Copilot CLI (v1.0.11+) and others expect additionalContext (top-level, SDK standard).
+# Claude Code reads BOTH additional_context and hookSpecificOutput without
+# deduplication, so we must emit only the field the current platform consumes.
 #
-# Uses printf instead of heredoc (cat <<EOF) to work around a bash 5.3+
-# bug where heredoc variable expansion hangs when content exceeds ~512 bytes.
+# Uses printf instead of heredoc to work around bash 5.3+ heredoc hang.
 # See: https://github.com/obra/superpowers/issues/571
 if [ -n "${CURSOR_PLUGIN_ROOT:-}" ]; then
-  # Cursor sets CURSOR_PLUGIN_ROOT (may also set CLAUDE_PLUGIN_ROOT) — emit additional_context
+  # Cursor sets CURSOR_PLUGIN_ROOT (may also set CLAUDE_PLUGIN_ROOT)
   printf '{\n  "additional_context": "%s"\n}\n' "$session_context"
-elif [ -n "${CLAUDE_PLUGIN_ROOT:-}" ]; then
-  # Claude Code sets CLAUDE_PLUGIN_ROOT — emit only hookSpecificOutput
+elif [ -n "${CLAUDE_PLUGIN_ROOT:-}" ] && [ -z "${COPILOT_CLI:-}" ]; then
+  # Claude Code sets CLAUDE_PLUGIN_ROOT without COPILOT_CLI
   printf '{\n  "hookSpecificOutput": {\n    "hookEventName": "SessionStart",\n    "additionalContext": "%s"\n  }\n}\n' "$session_context"
 else
-  # Other platforms — emit additional_context as fallback
-  printf '{\n  "additional_context": "%s"\n}\n' "$session_context"
+  # Copilot CLI (sets COPILOT_CLI=1) or unknown platform — SDK standard format
+  printf '{\n  "additionalContext": "%s"\n}\n' "$session_context"
 fi
 
 exit 0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "superpowers",
-  "version": "5.0.4",
+  "version": "5.0.6",
   "type": "module",
   "main": ".opencode/plugins/superpowers.js"
 }

skills/brainstorming/SKILL.md

@@ -27,7 +27,7 @@ You MUST create a task for each of these items and complete them in order:
 4. **Propose 2-3 approaches** — with trade-offs and your recommendation
 5. **Present design** — in sections scaled to their complexity, get user approval after each section
 6. **Write design doc** — save to `docs/superpowers/specs/YYYY-MM-DD-<topic>-design.md` and commit
-7. **Spec review loop** — dispatch spec-document-reviewer subagent with precisely crafted review context (never your session history); fix issues and re-dispatch until approved (max 3 iterations, then surface to human)
+7. **Spec self-review** — quick inline check for placeholders, contradictions, ambiguity, scope (see below)
 8. **User reviews written spec** — ask user to review the spec file before proceeding
 9. **Transition to implementation** — invoke writing-plans skill to create implementation plan
 
@@ -43,8 +43,7 @@ digraph brainstorming {
     "Present design sections" [shape=box];
     "User approves design?" [shape=diamond];
     "Write design doc" [shape=box];
-    "Spec review loop" [shape=box];
-    "Spec review passed?" [shape=diamond];
+    "Spec self-review\n(fix inline)" [shape=box];
     "User reviews spec?" [shape=diamond];
     "Invoke writing-plans skill" [shape=doublecircle];
 
@@ -57,10 +56,8 @@ digraph brainstorming {
     "Present design sections" -> "User approves design?";
     "User approves design?" -> "Present design sections" [label="no, revise"];
     "User approves design?" -> "Write design doc" [label="yes"];
-    "Write design doc" -> "Spec review loop";
-    "Spec review loop" -> "Spec review passed?";
-    "Spec review passed?" -> "Spec review loop" [label="issues found,\nfix and re-dispatch"];
-    "Spec review passed?" -> "User reviews spec?" [label="approved"];
+    "Write design doc" -> "Spec self-review\n(fix inline)";
+    "Spec self-review\n(fix inline)" -> "User reviews spec?";
     "User reviews spec?" -> "Write design doc" [label="changes requested"];
     "User reviews spec?" -> "Invoke writing-plans skill" [label="approved"];
 }
@@ -116,12 +113,15 @@ digraph brainstorming {
 - Use elements-of-style:writing-clearly-and-concisely skill if available
 - Commit the design document to git
 
-**Spec Review Loop:**
-After writing the spec document:
+**Spec Self-Review:**
+After writing the spec document, look at it with fresh eyes:
 
-1. Dispatch spec-document-reviewer subagent (see spec-document-reviewer-prompt.md)
-2. If Issues Found: fix, re-dispatch, repeat until Approved
-3. If loop exceeds 3 iterations, surface to human for guidance
+1. **Placeholder scan:** Any "TBD", "TODO", incomplete sections, or vague requirements? Fix them.
+2. **Internal consistency:** Do any sections contradict each other? Does the architecture match the feature descriptions?
+3. **Scope check:** Is this focused enough for a single implementation plan, or does it need decomposition?
+4. **Ambiguity check:** Could any requirement be interpreted two different ways? If so, pick one and make it explicit.
+
+Fix any issues inline. No need to re-review — just fix and move on.
 
 **User Review Gate:**
 After the spec review loop passes, ask the user to review the written spec before proceeding:

skills/brainstorming/scripts/server.cjs

@@ -76,8 +76,10 @@ function decodeFrame(buffer) {
 const PORT = process.env.BRAINSTORM_PORT || (49152 + Math.floor(Math.random() * 16383));
 const HOST = process.env.BRAINSTORM_HOST || '127.0.0.1';
 const URL_HOST = process.env.BRAINSTORM_URL_HOST || (HOST === '127.0.0.1' ? 'localhost' : HOST);
-const SCREEN_DIR = process.env.BRAINSTORM_DIR || '/tmp/brainstorm';
-const OWNER_PID = process.env.BRAINSTORM_OWNER_PID ? Number(process.env.BRAINSTORM_OWNER_PID) : null;
+const SESSION_DIR = process.env.BRAINSTORM_DIR || '/tmp/brainstorm';
+const CONTENT_DIR = path.join(SESSION_DIR, 'content');
+const STATE_DIR = path.join(SESSION_DIR, 'state');
+let ownerPid = process.env.BRAINSTORM_OWNER_PID ? Number(process.env.BRAINSTORM_OWNER_PID) : null;
 
 const MIME_TYPES = {
   '.html': 'text/html', '.css': 'text/css', '.js': 'application/javascript',
@@ -112,10 +114,10 @@ function wrapInFrame(content) {
 }
 
 function getNewestScreen() {
-  const files = fs.readdirSync(SCREEN_DIR)
+  const files = fs.readdirSync(CONTENT_DIR)
     .filter(f => f.endsWith('.html'))
     .map(f => {
-      const fp = path.join(SCREEN_DIR, f);
+      const fp = path.join(CONTENT_DIR, f);
       return { path: fp, mtime: fs.statSync(fp).mtime.getTime() };
     })
     .sort((a, b) => b.mtime - a.mtime);
@@ -142,7 +144,7 @@ function handleRequest(req, res) {
     res.end(html);
   } else if (req.method === 'GET' && req.url.startsWith('/files/')) {
     const fileName = req.url.slice(7);
-    const filePath = path.join(SCREEN_DIR, path.basename(fileName));
+    const filePath = path.join(CONTENT_DIR, path.basename(fileName));
     if (!fs.existsSync(filePath)) {
       res.writeHead(404);
       res.end('Not found');
@@ -230,7 +232,7 @@ function handleMessage(text) {
   touchActivity();
   console.log(JSON.stringify({ source: 'user-event', ...event }));
   if (event.choice) {
-    const eventsFile = path.join(SCREEN_DIR, '.events');
+    const eventsFile = path.join(STATE_DIR, 'events');
     fs.appendFileSync(eventsFile, JSON.stringify(event) + '\n');
   }
 }
@@ -258,32 +260,33 @@ const debounceTimers = new Map();
 // ========== Server Startup ==========
 
 function startServer() {
-  if (!fs.existsSync(SCREEN_DIR)) fs.mkdirSync(SCREEN_DIR, { recursive: true });
+  if (!fs.existsSync(CONTENT_DIR)) fs.mkdirSync(CONTENT_DIR, { recursive: true });
+  if (!fs.existsSync(STATE_DIR)) fs.mkdirSync(STATE_DIR, { recursive: true });
 
   // Track known files to distinguish new screens from updates.
   // macOS fs.watch reports 'rename' for both new files and overwrites,
   // so we can't rely on eventType alone.
   const knownFiles = new Set(
-    fs.readdirSync(SCREEN_DIR).filter(f => f.endsWith('.html'))
+    fs.readdirSync(CONTENT_DIR).filter(f => f.endsWith('.html'))
   );
 
   const server = http.createServer(handleRequest);
   server.on('upgrade', handleUpgrade);
 
-  const watcher = fs.watch(SCREEN_DIR, (eventType, filename) => {
+  const watcher = fs.watch(CONTENT_DIR, (eventType, filename) => {
     if (!filename || !filename.endsWith('.html')) return;
 
     if (debounceTimers.has(filename)) clearTimeout(debounceTimers.get(filename));
     debounceTimers.set(filename, setTimeout(() => {
       debounceTimers.delete(filename);
-      const filePath = path.join(SCREEN_DIR, filename);
+      const filePath = path.join(CONTENT_DIR, filename);
 
       if (!fs.existsSync(filePath)) return; // file was deleted
       touchActivity();
 
       if (!knownFiles.has(filename)) {
         knownFiles.add(filename);
-        const eventsFile = path.join(SCREEN_DIR, '.events');
+        const eventsFile = path.join(STATE_DIR, 'events');
         if (fs.existsSync(eventsFile)) fs.unlinkSync(eventsFile);
         console.log(JSON.stringify({ type: 'screen-added', file: filePath }));
       } else {
@@ -297,10 +300,10 @@ function startServer() {
 
   function shutdown(reason) {
     console.log(JSON.stringify({ type: 'server-stopped', reason }));
-    const infoFile = path.join(SCREEN_DIR, '.server-info');
+    const infoFile = path.join(STATE_DIR, 'server-info');
     if (fs.existsSync(infoFile)) fs.unlinkSync(infoFile);
     fs.writeFileSync(
-      path.join(SCREEN_DIR, '.server-stopped'),
+      path.join(STATE_DIR, 'server-stopped'),
       JSON.stringify({ reason, timestamp: Date.now() }) + '\n'
     );
     watcher.close();
@@ -309,8 +312,8 @@ function startServer() {
   }
 
   function ownerAlive() {
-    if (!OWNER_PID) return true;
-    try { process.kill(OWNER_PID, 0); return true; } catch (e) { return false; }
+    if (!ownerPid) return true;
+    try { process.kill(ownerPid, 0); return true; } catch (e) { return e.code === 'EPERM'; }
   }
 
   // Check every 60s: exit if owner process died or idle for 30 minutes
@@ -320,14 +323,27 @@ function startServer() {
   }, 60 * 1000);
   lifecycleCheck.unref();
 
+  // Validate owner PID at startup. If it's already dead, the PID resolution
+  // was wrong (common on WSL, Tailscale SSH, and cross-user scenarios).
+  // Disable monitoring and rely on the idle timeout instead.
+  if (ownerPid) {
+    try { process.kill(ownerPid, 0); }
+    catch (e) {
+      if (e.code !== 'EPERM') {
+        console.log(JSON.stringify({ type: 'owner-pid-invalid', pid: ownerPid, reason: 'dead at startup' }));
+        ownerPid = null;
+      }
+    }
+  }
+
   server.listen(PORT, HOST, () => {
     const info = JSON.stringify({
       type: 'server-started', port: Number(PORT), host: HOST,
       url_host: URL_HOST, url: 'http://' + URL_HOST + ':' + PORT,
-      screen_dir: SCREEN_DIR
+      screen_dir: CONTENT_DIR, state_dir: STATE_DIR
     });
     console.log(info);
-    fs.writeFileSync(path.join(SCREEN_DIR, '.server-info'), info + '\n');
+    fs.writeFileSync(path.join(STATE_DIR, 'server-info'), info + '\n');
   });
 }
 

skills/brainstorming/scripts/start-server.sh

@@ -78,16 +78,17 @@ fi
 SESSION_ID="$$-$(date +%s)"
 
 if [[ -n "$PROJECT_DIR" ]]; then
-  SCREEN_DIR="${PROJECT_DIR}/.superpowers/brainstorm/${SESSION_ID}"
+  SESSION_DIR="${PROJECT_DIR}/.superpowers/brainstorm/${SESSION_ID}"
 else
-  SCREEN_DIR="/tmp/brainstorm-${SESSION_ID}"
+  SESSION_DIR="/tmp/brainstorm-${SESSION_ID}"
 fi
 
-PID_FILE="${SCREEN_DIR}/.server.pid"
-LOG_FILE="${SCREEN_DIR}/.server.log"
+STATE_DIR="${SESSION_DIR}/state"
+PID_FILE="${STATE_DIR}/server.pid"
+LOG_FILE="${STATE_DIR}/server.log"
 
-# Create fresh session directory
-mkdir -p "$SCREEN_DIR"
+# Create fresh session directory with content and state peers
+mkdir -p "${SESSION_DIR}/content" "$STATE_DIR"
 
 # Kill any existing server
 if [[ -f "$PID_FILE" ]]; then
@@ -106,22 +107,16 @@ if [[ -z "$OWNER_PID" || "$OWNER_PID" == "1" ]]; then
   OWNER_PID="$PPID"
 fi
 
-# On Windows/MSYS2, the MSYS2 PID namespace is invisible to Node.js.
-# Skip owner-PID monitoring — the 30-minute idle timeout prevents orphans.
-case "${OSTYPE:-}" in
-  msys*|cygwin*|mingw*) OWNER_PID="" ;;
-esac
-
 # Foreground mode for environments that reap detached/background processes.
 if [[ "$FOREGROUND" == "true" ]]; then
   echo "$$" > "$PID_FILE"
-  env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs
+  env BRAINSTORM_DIR="$SESSION_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs
   exit $?
 fi
 
 # Start server, capturing output to log file
 # Use nohup to survive shell exit; disown to remove from job table
-nohup env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs > "$LOG_FILE" 2>&1 &
+nohup env BRAINSTORM_DIR="$SESSION_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs > "$LOG_FILE" 2>&1 &
 SERVER_PID=$!
 disown "$SERVER_PID" 2>/dev/null
 echo "$SERVER_PID" > "$PID_FILE"

skills/brainstorming/scripts/stop-server.sh

@@ -1,19 +1,20 @@
 #!/usr/bin/env bash
 # Stop the brainstorm server and clean up
-# Usage: stop-server.sh <screen_dir>
+# Usage: stop-server.sh <session_dir>
 #
 # Kills the server process. Only deletes session directory if it's
 # under /tmp (ephemeral). Persistent directories (.superpowers/) are
 # kept so mockups can be reviewed later.
 
-SCREEN_DIR="$1"
+SESSION_DIR="$1"
 
-if [[ -z "$SCREEN_DIR" ]]; then
-  echo '{"error": "Usage: stop-server.sh <screen_dir>"}'
+if [[ -z "$SESSION_DIR" ]]; then
+  echo '{"error": "Usage: stop-server.sh <session_dir>"}'
   exit 1
 fi
 
-PID_FILE="${SCREEN_DIR}/.server.pid"
+STATE_DIR="${SESSION_DIR}/state"
+PID_FILE="${STATE_DIR}/server.pid"
 
 if [[ -f "$PID_FILE" ]]; then
   pid=$(cat "$PID_FILE")
@@ -42,11 +43,11 @@ if [[ -f "$PID_FILE" ]]; then
     exit 1
   fi
 
-  rm -f "$PID_FILE" "${SCREEN_DIR}/.server.log"
+  rm -f "$PID_FILE" "${STATE_DIR}/server.log"
 
   # Only delete ephemeral /tmp directories
-  if [[ "$SCREEN_DIR" == /tmp/* ]]; then
-    rm -rf "$SCREEN_DIR"
+  if [[ "$SESSION_DIR" == /tmp/* ]]; then
+    rm -rf "$SESSION_DIR"
   fi
 
   echo '{"status": "stopped"}'

skills/brainstorming/visual-companion.md

@@ -26,7 +26,7 @@ A question *about* a UI topic is not automatically a visual question. "What kind
 
 ## How It Works
 
-The server watches a directory for HTML files and serves the newest one to the browser. You write HTML content, the user sees it in their browser and can click to select options. Selections are recorded to a `.events` file that you read on your next turn.
+The server watches a directory for HTML files and serves the newest one to the browser. You write HTML content to `screen_dir`, the user sees it in their browser and can click to select options. Selections are recorded to `state_dir/events` that you read on your next turn.
 
 **Content fragments vs full documents:** If your HTML file starts with `<!DOCTYPE` or `<html`, the server serves it as-is (just injects the helper script). Otherwise, the server automatically wraps your content in the frame template — adding the header, CSS theme, selection indicator, and all interactive infrastructure. **Write content fragments by default.** Only write full documents when you need complete control over the page.
 
@@ -37,12 +37,13 @@ The server watches a directory for HTML files and serves the newest one to the b
 scripts/start-server.sh --project-dir /path/to/project
 
 # Returns: {"type":"server-started","port":52341,"url":"http://localhost:52341",
-#           "screen_dir":"/path/to/project/.superpowers/brainstorm/12345-1706000000"}
+#           "screen_dir":"/path/to/project/.superpowers/brainstorm/12345-1706000000/content",
+#           "state_dir":"/path/to/project/.superpowers/brainstorm/12345-1706000000/state"}
 ```
 
-Save `screen_dir` from the response. Tell user to open the URL.
+Save `screen_dir` and `state_dir` from the response. Tell user to open the URL.
 
-**Finding connection info:** The server writes its startup JSON to `$SCREEN_DIR/.server-info`. If you launched the server in the background and didn't capture stdout, read that file to get the URL and port. When using `--project-dir`, check `<project>/.superpowers/brainstorm/` for the session directory.
+**Finding connection info:** The server writes its startup JSON to `$STATE_DIR/server-info`. If you launched the server in the background and didn't capture stdout, read that file to get the URL and port. When using `--project-dir`, check `<project>/.superpowers/brainstorm/` for the session directory.
 
 **Note:** Pass the project root as `--project-dir` so mockups persist in `.superpowers/brainstorm/` and survive server restarts. Without it, files go to `/tmp` and get cleaned up. Remind the user to add `.superpowers/` to `.gitignore` if it's not already there.
 
@@ -61,7 +62,7 @@ scripts/start-server.sh --project-dir /path/to/project
 # across conversation turns.
 scripts/start-server.sh --project-dir /path/to/project
 ```
-When calling this via the Bash tool, set `run_in_background: true`. Then read `$SCREEN_DIR/.server-info` on the next turn to get the URL and port.
+When calling this via the Bash tool, set `run_in_background: true`. Then read `$STATE_DIR/server-info` on the next turn to get the URL and port.
 
 **Codex:**
 ```bash
@@ -93,7 +94,7 @@ Use `--url-host` to control what hostname is printed in the returned URL JSON.
 ## The Loop
 
 1. **Check server is alive**, then **write HTML** to a new file in `screen_dir`:
-   - Before each write, check that `$SCREEN_DIR/.server-info` exists. If it doesn't (or `.server-stopped` exists), the server has shut down — restart it with `start-server.sh` before continuing. The server auto-exits after 30 minutes of inactivity.
+   - Before each write, check that `$STATE_DIR/server-info` exists. If it doesn't (or `$STATE_DIR/server-stopped` exists), the server has shut down — restart it with `start-server.sh` before continuing. The server auto-exits after 30 minutes of inactivity.
    - Use semantic filenames: `platform.html`, `visual-style.html`, `layout.html`
    - **Never reuse filenames** — each screen gets a fresh file
    - Use Write tool — **never use cat/heredoc** (dumps noise into terminal)
@@ -105,9 +106,9 @@ Use `--url-host` to control what hostname is printed in the returned URL JSON.
    - Ask them to respond in the terminal: "Take a look and let me know what you think. Click to select an option if you'd like."
 
 3. **On your next turn** — after the user responds in the terminal:
-   - Read `$SCREEN_DIR/.events` if it exists — this contains the user's browser interactions (clicks, selections) as JSON lines
+   - Read `$STATE_DIR/events` if it exists — this contains the user's browser interactions (clicks, selections) as JSON lines
    - Merge with the user's terminal text to get the full picture
-   - The terminal message is the primary feedback; `.events` provides structured interaction data
+   - The terminal message is the primary feedback; `state_dir/events` provides structured interaction data
 
 4. **Iterate or advance** — if feedback changes current screen, write a new file (e.g., `layout-v2.html`). Only move to the next question when the current step is validated.
 
@@ -244,7 +245,7 @@ The frame template provides these CSS classes for your content:
 
 ## Browser Events Format
 
-When the user clicks options in the browser, their interactions are recorded to `$SCREEN_DIR/.events` (one JSON object per line). The file is cleared automatically when you push a new screen.
+When the user clicks options in the browser, their interactions are recorded to `$STATE_DIR/events` (one JSON object per line). The file is cleared automatically when you push a new screen.
 
 ```jsonl
 {"type":"click","choice":"a","text":"Option A - Simple Layout","timestamp":1706000101}
@@ -254,7 +255,7 @@ When the user clicks options in the browser, their interactions are recorded to
 
 The full event stream shows the user's exploration path — they may click multiple options before settling. The last `choice` event is typically the final selection, but the pattern of clicks can reveal hesitation or preferences worth asking about.
 
-If `.events` doesn't exist, the user didn't interact with the browser — use only their terminal text.
+If `$STATE_DIR/events` doesn't exist, the user didn't interact with the browser — use only their terminal text.
 
 ## Design Tips
 
@@ -275,7 +276,7 @@ If `.events` doesn't exist, the user didn't interact with the browser — use on
 ## Cleaning Up
 
 ```bash
-scripts/stop-server.sh $SCREEN_DIR
+scripts/stop-server.sh $SESSION_DIR
 ```
 
 If the session used `--project-dir`, mockup files persist in `.superpowers/brainstorm/` for later reference. Only `/tmp` sessions get deleted on stop.

skills/executing-plans/SKILL.md

@@ -65,6 +65,6 @@ After all tasks complete and verified:
 ## Integration
 
 **Required workflow skills:**
-- **superpowers:using-git-worktrees** - REQUIRED: Set up isolated workspace before starting
+- **superpowers:using-git-worktrees** - Detects workspace environment and offers worktree isolation on request
 - **superpowers:writing-plans** - Creates the plan this skill executes
 - **superpowers:finishing-a-development-branch** - Complete development after all tasks

skills/finishing-a-development-branch/SKILL.md

@@ -9,7 +9,7 @@ description: Use when implementation is complete, all tests pass, and you need t
 
 Guide completion of development work by presenting clear options and handling chosen workflow.
 
-**Core principle:** Verify tests → Present options → Execute choice → Clean up.
+**Core principle:** Verify tests → Detect environment → Present options → Execute choice → Clean up.
 
 **Announce at start:** "I'm using the finishing-a-development-branch skill to complete this work."
 
@@ -37,7 +37,24 @@ Stop. Don't proceed to Step 2.
 
 **If tests pass:** Continue to Step 2.
 
-### Step 2: Determine Base Branch
+### Step 2: Detect Environment
+
+**Determine workspace state before presenting options:**
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+```
+
+This determines which menu to show and how cleanup works:
+
+| State | Menu | Cleanup |
+|-------|------|---------|
+| `GIT_DIR == GIT_COMMON` (normal repo) | Standard 4 options | No worktree to clean up |
+| `GIT_DIR != GIT_COMMON`, named branch | Standard 4 options | Provenance-based (see Step 6) |
+| `GIT_DIR != GIT_COMMON`, detached HEAD | Reduced 3 options (no merge) | No cleanup (externally managed) |
+
+### Step 3: Determine Base Branch
 
 ```bash
 # Try common base branches
@@ -46,9 +63,9 @@ git merge-base HEAD main 2>/dev/null || git merge-base HEAD master 2>/dev/null
 
 Or ask: "This branch split from main - is that correct?"
 
-### Step 3: Present Options
+### Step 4: Present Options
 
-Present exactly these 4 options:
+**Normal repo and named-branch worktree — present exactly these 4 options:**
 
 ```
 Implementation complete. What would you like to do?
@@ -61,30 +78,45 @@ Implementation complete. What would you like to do?
 Which option?
 ```
 
+**Detached HEAD — present exactly these 3 options:**
+
+```
+Implementation complete. You're on a detached HEAD (externally managed workspace).
+
+1. Push as new branch and create a Pull Request
+2. Keep as-is (I'll handle it later)
+3. Discard this work
+
+Which option?
+```
+
 **Don't add explanation** - keep options concise.
 
-### Step 4: Execute Choice
+### Step 5: Execute Choice
 
 #### Option 1: Merge Locally
 
 ```bash
-# Switch to base branch
+# Get main repo root for CWD safety
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+
+# Merge first — verify success before removing anything
 git checkout <base-branch>
-
-# Pull latest
 git pull
-
-# Merge feature branch
 git merge <feature-branch>
 
 # Verify tests on merged result
 <test command>
 
-# If tests pass
-git branch -d <feature-branch>
+# Only after merge succeeds: cleanup worktree (Step 6), then delete branch
 ```
 
-Then: Cleanup worktree (Step 5)
+Then: Cleanup worktree (Step 6), then delete branch:
+
+```bash
+git branch -d <feature-branch>
+```
 
 #### Option 2: Push and Create PR
 
@@ -103,7 +135,7 @@ EOF
 )"
 ```
 
-Then: Cleanup worktree (Step 5)
+**Do NOT clean up worktree** — user needs it alive to iterate on PR feedback.
 
 #### Option 3: Keep As-Is
 
@@ -127,36 +159,46 @@ Wait for exact confirmation.
 
 If confirmed:
 ```bash
-git checkout <base-branch>
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+```
+
+Then: Cleanup worktree (Step 6), then force-delete branch:
+```bash
 git branch -D <feature-branch>
 ```
 
-Then: Cleanup worktree (Step 5)
+### Step 6: Cleanup Workspace
 
-### Step 5: Cleanup Worktree
+**Only runs for Options 1 and 4.** Options 2 and 3 always preserve the worktree.
 
-**For Options 1, 2, 4:**
-
-Check if in worktree:
 ```bash
-git worktree list | grep $(git branch --show-current)
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+WORKTREE_PATH=$(git rev-parse --show-toplevel)
 ```
 
-If yes:
+**If `GIT_DIR == GIT_COMMON`:** Normal repo, no worktree to clean up. Done.
+
+**If worktree path is under `.worktrees/`, `worktrees/`, or `~/.config/superpowers/worktrees/`:** Superpowers created this worktree — we own cleanup.
+
 ```bash
-git worktree remove <worktree-path>
+MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
+cd "$MAIN_ROOT"
+git worktree remove "$WORKTREE_PATH"
+git worktree prune  # Self-healing: clean up any stale registrations
 ```
 
-**For Option 3:** Keep worktree.
+**Otherwise:** The host environment (harness) owns this workspace. Do NOT remove it. If your platform provides a workspace-exit tool, use it. Otherwise, leave the workspace in place.
 
 ## Quick Reference
 
 | Option | Merge | Push | Keep Worktree | Cleanup Branch |
 |--------|-------|------|---------------|----------------|
-| 1. Merge locally | ✓ | - | - | ✓ |
-| 2. Create PR | - | ✓ | ✓ | - |
-| 3. Keep as-is | - | - | ✓ | - |
-| 4. Discard | - | - | - | ✓ (force) |
+| 1. Merge locally | yes | - | - | yes |
+| 2. Create PR | - | yes | yes | - |
+| 3. Keep as-is | - | - | yes | - |
+| 4. Discard | - | - | - | yes (force) |
 
 ## Common Mistakes
 
@@ -165,13 +207,25 @@ git worktree remove <worktree-path>
 - **Fix:** Always verify tests before offering options
 
 **Open-ended questions**
-- **Problem:** "What should I do next?" → ambiguous
-- **Fix:** Present exactly 4 structured options
+- **Problem:** "What should I do next?" is ambiguous
+- **Fix:** Present exactly 4 structured options (or 3 for detached HEAD)
 
-**Automatic worktree cleanup**
-- **Problem:** Remove worktree when might need it (Option 2, 3)
+**Cleaning up worktree for Option 2**
+- **Problem:** Remove worktree user needs for PR iteration
 - **Fix:** Only cleanup for Options 1 and 4
 
+**Deleting branch before removing worktree**
+- **Problem:** `git branch -d` fails because worktree still references the branch
+- **Fix:** Merge first, remove worktree, then delete branch
+
+**Running git worktree remove from inside the worktree**
+- **Problem:** Command fails silently when CWD is inside the worktree being removed
+- **Fix:** Always `cd` to main repo root before `git worktree remove`
+
+**Cleaning up harness-owned worktrees**
+- **Problem:** Removing a worktree the harness created causes phantom state
+- **Fix:** Only clean up worktrees under `.worktrees/`, `worktrees/`, or `~/.config/superpowers/worktrees/`
+
 **No confirmation for discard**
 - **Problem:** Accidentally delete work
 - **Fix:** Require typed "discard" confirmation
@@ -183,12 +237,18 @@ git worktree remove <worktree-path>
 - Merge without verifying tests on result
 - Delete work without confirmation
 - Force-push without explicit request
+- Remove a worktree before confirming merge success
+- Clean up worktrees you didn't create (provenance check)
+- Run `git worktree remove` from inside the worktree
 
 **Always:**
 - Verify tests before offering options
-- Present exactly 4 options
+- Detect environment before presenting menu
+- Present exactly 4 options (or 3 for detached HEAD)
 - Get typed confirmation for Option 4
 - Clean up worktree for Options 1 & 4 only
+- `cd` to main repo root before worktree removal
+- Run `git worktree prune` after removal
 
 ## Integration
 

skills/subagent-driven-development/SKILL.md

@@ -265,7 +265,7 @@ Done!
 ## Integration
 
 **Required workflow skills:**
-- **superpowers:using-git-worktrees** - REQUIRED: Set up isolated workspace before starting
+- **superpowers:using-git-worktrees** - Detects workspace environment and offers worktree isolation on request
 - **superpowers:writing-plans** - Creates the plan this skill executes
 - **superpowers:requesting-code-review** - Code review template for reviewer subagents
 - **superpowers:finishing-a-development-branch** - Complete development after all tasks

skills/systematic-debugging/CREATION-LOG.md

@@ -4,7 +4,7 @@ Reference example of extracting, structuring, and bulletproofing a critical skil
 
 ## Source Material
 
-Extracted debugging framework from `/Users/jesse/.claude/CLAUDE.md`:
+Extracted debugging framework from `~/.claude/CLAUDE.md`:
 - 4-phase systematic process (Investigation → Pattern Analysis → Hypothesis → Implementation)
 - Core mandate: ALWAYS find root cause, NEVER fix symptoms
 - Rules designed to resist time pressure and rationalization

skills/systematic-debugging/root-cause-tracing.md

@@ -33,7 +33,7 @@ digraph when_to_use {
 
 ### 1. Observe the Symptom
 ```
-Error: git init failed in /Users/jesse/project/packages/core
+Error: git init failed in ~/project/packages/core
 ```
 
 ### 2. Find Immediate Cause

skills/using-git-worktrees/SKILL.md

@@ -1,104 +1,141 @@
 ---
 name: using-git-worktrees
-description: Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git worktrees with smart directory selection and safety verification
+description: Use when starting feature work that needs isolation from current workspace or before executing implementation plans - detects environment, offers worktree isolation when appropriate
 ---
 
 # Using Git Worktrees
 
 ## Overview
 
-Git worktrees create isolated workspaces sharing the same repository, allowing work on multiple branches simultaneously without switching.
+Detect the workspace environment. Work in place by default. Offer worktree isolation when the user would benefit, but only create one when they explicitly ask.
 
-**Core principle:** Systematic directory selection + safety verification = reliable isolation.
+**Core principle:** Detect first. Default to working in place. Create worktrees only on explicit user request. Never fight the harness.
 
-**Announce at start:** "I'm using the using-git-worktrees skill to set up an isolated workspace."
+**Announce at start:** "I'm using the using-git-worktrees skill to check the workspace."
 
-## Directory Selection Process
+## Step 1: Detect Existing Isolation
 
-Follow this priority order:
-
-### 1. Check Existing Directories
+**Before anything else, check if you are already in an isolated workspace.**
 
 ```bash
-# Check in priority order
-ls -d .worktrees 2>/dev/null     # Preferred (hidden)
-ls -d worktrees 2>/dev/null      # Alternative
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
 ```
 
-**If found:** Use that directory. If both exist, `.worktrees` wins.
-
-### 2. Check CLAUDE.md
+**Submodule guard:** `GIT_DIR != GIT_COMMON` is also true inside git submodules. Before concluding "already in a worktree," verify you are not in a submodule:
 
 ```bash
-grep -i "worktree.*director" CLAUDE.md 2>/dev/null
+# If this returns a path, you're in a submodule, not a worktree — treat as normal repo
+git rev-parse --show-superproject-working-tree 2>/dev/null
 ```
 
-**If preference specified:** Use it without asking.
+**If `GIT_DIR != GIT_COMMON` (and not a submodule):** You are already in a linked worktree. The current workspace is your working environment — use it for whatever the user is asking about. Skip to Step 4 (Project Setup).
 
-### 3. Ask User
+**Do not offer alternatives, and do not create another worktree — not here as a nested one, not as a sibling from the main repo, and not anywhere else.** If the user's request mentions "isolation" or "a worktree" explicitly, the current worktree already satisfies that need. Explain this and work in place.
 
-If no directory exists and no CLAUDE.md preference:
+**If the user insists on different isolation for unrelated work:** stop and ask them to exit this workspace and re-invoke the skill from the main repo. Do not create siblings on their behalf.
 
-```
-No worktree directory found. Where should I create worktrees?
+Report with branch state:
+- On a branch: "Already in isolated workspace at `<path>` on branch `<name>`."
+- Detached HEAD: "Already in isolated workspace at `<path>` (detached HEAD, externally managed). Branch creation needed at finish time."
 
-1. .worktrees/ (project-local, hidden)
-2. ~/.config/superpowers/worktrees/<project-name>/ (global location)
+**If `GIT_DIR == GIT_COMMON` (or in a submodule):** You are in a normal repo checkout. Proceed to Step 2.
 
-Which would you prefer?
+## Step 2: Offer Workspace Options
+
+**The default path is to work in place on your current branch.** Do NOT create a worktree unless the user explicitly asks for one.
+
+```bash
+# Report current state to the user
+echo "Current branch: $BRANCH"
+echo "Repository: $(basename "$(git rev-parse --show-toplevel)")"
 ```
 
-## Safety Verification
+**Check the user's most recent message first.** If they already asked for a worktree, named the worktree skill, or asked for an isolated workspace in the message that invoked you, that IS the explicit ask — proceed directly to Step 3 without re-prompting.
 
-### For Project-Local Directories (.worktrees or worktrees)
+Otherwise, tell the user their options and **wait for a reply**:
+
+> "You're on `<branch>` in `<repo>`. I can set up an isolated worktree, or we can work directly here. What do you prefer?"
+
+**Routing:**
+- **User explicitly asks for a worktree** → proceed to Step 3
+- **User says work in place** → skip to Step 4
+- **User gives no clear worktree preference** → skip to Step 4 (default is in-place)
+- **Silence or unrelated reply** → ask once more, then skip to Step 4 if still unclear
+
+The default is always Step 4. Step 3 requires an explicit "yes, create a worktree" from the user.
+
+## Step 3: Create Worktree
+
+**You only reach this step because the user explicitly asked for a worktree in Step 2.**
+
+You have two mechanisms. Try them in this order.
+
+### 3a. Native Worktree Tools (preferred)
+
+Do you already have a way to create a worktree? It might be a tool with a name like `EnterWorktree`, `WorktreeCreate`, a `/worktree` command, or a `--worktree` flag. If you do, use it and skip to Step 4.
+
+Native tools handle directory placement, branch creation, and cleanup automatically. Using `git worktree add` when you have a native tool creates phantom state your harness can't see or manage.
+
+Only proceed to Step 3b if you have no native worktree tool available.
+
+### 3b. Git Worktree Fallback
+
+**Only use this if Step 3a does not apply** — you have no native worktree tool available. Create a worktree manually using git.
+
+#### Directory Selection
+
+Follow this priority order. Explicit user preference always beats observed filesystem state.
+
+1. **Check your instructions for a declared worktree directory preference.** If the user has already specified one, use it without asking.
+
+2. **Check for an existing project-local worktree directory:**
+   ```bash
+   ls -d .worktrees 2>/dev/null     # Preferred (hidden)
+   ls -d worktrees 2>/dev/null      # Alternative
+   ```
+   If found, use it. If both exist, `.worktrees` wins.
+
+3. **Check for an existing global directory:**
+   ```bash
+   project=$(basename "$(git rev-parse --show-toplevel)")
+   ls -d ~/.config/superpowers/worktrees/$project 2>/dev/null
+   ```
+   If found, use it (backward compatibility with legacy global path).
+
+4. **If there is no other guidance available**, default to `.worktrees/` at the project root.
+
+#### Safety Verification (project-local directories only)
 
 **MUST verify directory is ignored before creating worktree:**
 
 ```bash
-# Check if directory is ignored (respects local, global, and system gitignore)
 git check-ignore -q .worktrees 2>/dev/null || git check-ignore -q worktrees 2>/dev/null
 ```
 
-**If NOT ignored:**
-
-Per Jesse's rule "Fix broken things immediately":
-1. Add appropriate line to .gitignore
-2. Commit the change
-3. Proceed with worktree creation
+**If NOT ignored:** Add to .gitignore, commit the change, then proceed.
 
 **Why critical:** Prevents accidentally committing worktree contents to repository.
 
-### For Global Directory (~/.config/superpowers/worktrees)
+Global directories (`~/.config/superpowers/worktrees/`) need no verification.
 
-No .gitignore verification needed - outside project entirely.
-
-## Creation Steps
-
-### 1. Detect Project Name
+#### Create the Worktree
 
 ```bash
 project=$(basename "$(git rev-parse --show-toplevel)")
-```
 
-### 2. Create Worktree
+# Determine path based on chosen location
+# For project-local: path="$LOCATION/$BRANCH_NAME"
+# For global: path="~/.config/superpowers/worktrees/$project/$BRANCH_NAME"
 
-```bash
-# Determine full path
-case $LOCATION in
-  .worktrees|worktrees)
-    path="$LOCATION/$BRANCH_NAME"
-    ;;
-  ~/.config/superpowers/worktrees/*)
-    path="~/.config/superpowers/worktrees/$project/$BRANCH_NAME"
-    ;;
-esac
-
-# Create worktree with new branch
 git worktree add "$path" -b "$BRANCH_NAME"
 cd "$path"
 ```
 
-### 3. Run Project Setup
+**Sandbox fallback:** If `git worktree add` fails with a permission error (sandbox denial), tell the user the sandbox blocked worktree creation and you're working in the current directory instead. Then run setup and baseline tests in place.
+
+## Step 4: Project Setup
 
 Auto-detect and run appropriate setup:
 
@@ -117,44 +154,74 @@ if [ -f pyproject.toml ]; then poetry install; fi
 if [ -f go.mod ]; then go mod download; fi
 ```
 
-### 4. Verify Clean Baseline
+## Step 5: Verify Clean Baseline
 
-Run tests to ensure worktree starts clean:
+Run tests to ensure workspace starts clean:
 
 ```bash
-# Examples - use project-appropriate command
-npm test
-cargo test
-pytest
-go test ./...
+# Use project-appropriate command
+npm test / cargo test / pytest / go test ./...
 ```
 
 **If tests fail:** Report failures, ask whether to proceed or investigate.
 
 **If tests pass:** Report ready.
 
-### 5. Report Location
+### Report
 
+If working in a worktree:
 ```
 Worktree ready at <full-path>
 Tests passing (<N> tests, 0 failures)
 Ready to implement <feature-name>
 ```
 
+If working in place:
+```
+Working in place on <branch> at <path>
+Tests passing (<N> tests, 0 failures)
+Ready to implement <feature-name>
+```
+
 ## Quick Reference
 
 | Situation | Action |
 |-----------|--------|
+| Already in linked worktree | Skip creation, go to Step 4 (Step 1) |
+| In a submodule | Treat as normal repo (Step 1 guard) |
+| Normal repo, user wants in-place | Work in place, go to Step 4 (Step 2 default) |
+| Normal repo, user asks for worktree | Create worktree (Step 3) |
+| Native worktree tool available | Use it (Step 3a) |
+| No native tool | Git worktree fallback (Step 3b) |
 | `.worktrees/` exists | Use it (verify ignored) |
 | `worktrees/` exists | Use it (verify ignored) |
 | Both exist | Use `.worktrees/` |
-| Neither exists | Check CLAUDE.md → Ask user |
+| Neither exists | Check instruction file, then default `.worktrees/` |
+| Global path exists | Use it (backward compat) |
 | Directory not ignored | Add to .gitignore + commit |
+| Permission error on create | Sandbox fallback, work in place |
 | Tests fail during baseline | Report failures + ask |
 | No package.json/Cargo.toml | Skip dependency install |
+| User gives no worktree preference | Work in place (Step 2 default) |
+| Plan touches multiple repos | Offer a matching worktree per repo, same branch name |
 
 ## Common Mistakes
 
+### Creating a worktree without being asked
+
+- **Problem:** Agent creates a worktree because the skill was invoked, without the user requesting one
+- **Fix:** Step 2 defaults to working in place. Only Step 3 creates, and only after explicit user request.
+
+### Fighting the harness
+
+- **Problem:** Using `git worktree add` when the platform already provides isolation
+- **Fix:** Step 1 detects existing isolation. Step 3a defers to native tools.
+
+### Skipping detection
+
+- **Problem:** Creating a nested worktree inside an existing one
+- **Fix:** Always run Step 1 before creating anything
+
 ### Skipping ignore verification
 
 - **Problem:** Worktree contents get tracked, pollute git status
@@ -163,45 +230,31 @@ Ready to implement <feature-name>
 ### Assuming directory location
 
 - **Problem:** Creates inconsistency, violates project conventions
-- **Fix:** Follow priority: existing > CLAUDE.md > ask
+- **Fix:** Follow priority: existing > global legacy > instruction file > default
 
 ### Proceeding with failing tests
 
 - **Problem:** Can't distinguish new bugs from pre-existing issues
 - **Fix:** Report failures, get explicit permission to proceed
 
-### Hardcoding setup commands
-
-- **Problem:** Breaks on projects using different tools
-- **Fix:** Auto-detect from project files (package.json, etc.)
-
-## Example Workflow
-
-```
-You: I'm using the using-git-worktrees skill to set up an isolated workspace.
-
-[Check .worktrees/ - exists]
-[Verify ignored - git check-ignore confirms .worktrees/ is ignored]
-[Create worktree: git worktree add .worktrees/auth -b feature/auth]
-[Run npm install]
-[Run npm test - 47 passing]
-
-Worktree ready at /Users/jesse/myproject/.worktrees/auth
-Tests passing (47 tests, 0 failures)
-Ready to implement auth feature
-```
-
 ## Red Flags
 
 **Never:**
+- Create a worktree without the user explicitly asking for one
+- Create a worktree when Step 1 detects existing isolation
+- Use `git worktree add` when you have a native worktree tool (e.g., `EnterWorktree`). This is the #1 mistake — if you have it, use it.
+- Skip Step 3a by jumping straight to Step 3b's git commands
 - Create worktree without verifying it's ignored (project-local)
 - Skip baseline test verification
 - Proceed with failing tests without asking
-- Assume directory location when ambiguous
-- Skip CLAUDE.md check
+- Infer worktree consent from the task description or plan — only an explicit user request counts
 
 **Always:**
-- Follow directory priority: existing > CLAUDE.md > ask
+- Run Step 1 detection first
+- Default to working in place (Step 2 → Step 4)
+- Only create a worktree after explicit user request
+- Prefer native tools over git fallback
+- Follow directory priority: existing > global legacy > instruction file > default
 - Verify directory is ignored for project-local
 - Auto-detect and run project setup
 - Verify clean test baseline
@@ -209,10 +262,9 @@ Ready to implement auth feature
 ## Integration
 
 **Called by:**
-- **brainstorming** (Phase 4) - REQUIRED when design is approved and implementation follows
-- **subagent-driven-development** - REQUIRED before executing any tasks
-- **executing-plans** - REQUIRED before executing any tasks
-- Any skill needing isolated workspace
+- **subagent-driven-development** - Calls this to detect the workspace and optionally set up worktree isolation on request
+- **executing-plans** - Calls this to detect the workspace and optionally set up worktree isolation on request
+- Any skill that may use worktree isolation
 
 **Pairs with:**
 - **finishing-a-development-branch** - REQUIRED for cleanup after work complete

skills/using-superpowers/SKILL.md

@@ -29,13 +29,15 @@ If CLAUDE.md, GEMINI.md, or AGENTS.md says "don't use TDD" and a skill says "alw
 
 **In Claude Code:** Use the `Skill` tool. When you invoke a skill, its content is loaded and presented to you—follow it directly. Never use the Read tool on skill files.
 
+**In Copilot CLI:** Use the `skill` tool. Skills are auto-discovered from installed plugins. The `skill` tool works the same as Claude Code's `Skill` tool.
+
 **In Gemini CLI:** Skills activate via the `activate_skill` tool. Gemini loads skill metadata at session start and activates the full content on demand.
 
 **In other environments:** Check your platform's documentation for how skills are loaded.
 
 ## Platform Adaptation
 
-Skills use Claude Code tool names. Non-CC platforms: see `references/codex-tools.md` (Codex) for tool equivalents. Gemini CLI users get the tool mapping loaded automatically via GEMINI.md.
+Skills use Claude Code tool names. Non-CC platforms: see `references/copilot-tools.md` (Copilot CLI), `references/codex-tools.md` (Codex) for tool equivalents. Gemini CLI users get the tool mapping loaded automatically via GEMINI.md.
 
 # Using Skills
 

skills/using-superpowers/references/codex-tools.md

@@ -4,7 +4,7 @@ Skills use Claude Code tool names. When you encounter these in a skill, use your
 
 | Skill references | Codex equivalent |
 |-----------------|------------------|
-| `Task` tool (dispatch subagent) | `spawn_agent` |
+| `Task` tool (dispatch subagent) | `spawn_agent` (see [Named agent dispatch](#named-agent-dispatch)) |
 | Multiple `Task` calls (parallel) | Multiple `spawn_agent` calls |
 | Task returns result | `wait` |
 | Task completes automatically | `close_agent` to free slot |
@@ -23,3 +23,78 @@ multi_agent = true
 ```
 
 This enables `spawn_agent`, `wait`, and `close_agent` for skills like `dispatching-parallel-agents` and `subagent-driven-development`.
+
+## Named agent dispatch
+
+Claude Code skills reference named agent types like `superpowers:code-reviewer`.
+Codex does not have a named agent registry — `spawn_agent` creates generic agents
+from built-in roles (`default`, `explorer`, `worker`).
+
+When a skill says to dispatch a named agent type:
+
+1. Find the agent's prompt file (e.g., `agents/code-reviewer.md` or the skill's
+   local prompt template like `code-quality-reviewer-prompt.md`)
+2. Read the prompt content
+3. Fill any template placeholders (`{BASE_SHA}`, `{WHAT_WAS_IMPLEMENTED}`, etc.)
+4. Spawn a `worker` agent with the filled content as the `message`
+
+| Skill instruction | Codex equivalent |
+|-------------------|------------------|
+| `Task tool (superpowers:code-reviewer)` | `spawn_agent(agent_type="worker", message=...)` with `code-reviewer.md` content |
+| `Task tool (general-purpose)` with inline prompt | `spawn_agent(message=...)` with the same prompt |
+
+### Message framing
+
+The `message` parameter is user-level input, not a system prompt. Structure it
+for maximum instruction adherence:
+
+```
+Your task is to perform the following. Follow the instructions below exactly.
+
+<agent-instructions>
+[filled prompt content from the agent's .md file]
+</agent-instructions>
+
+Execute this now. Output ONLY the structured response following the format
+specified in the instructions above.
+```
+
+- Use task-delegation framing ("Your task is...") rather than persona framing ("You are...")
+- Wrap instructions in XML tags — the model treats tagged blocks as authoritative
+- End with an explicit execution directive to prevent summarization of the instructions
+
+### When this workaround can be removed
+
+This approach compensates for Codex's plugin system not yet supporting an `agents`
+field in `plugin.json`. When `RawPluginManifest` gains an `agents` field, the
+plugin can symlink to `agents/` (mirroring the existing `skills/` symlink) and
+skills can dispatch named agent types directly.
+
+## Environment Detection
+
+Skills that create worktrees or finish branches should detect their
+environment with read-only git commands before proceeding:
+
+```bash
+GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
+GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
+BRANCH=$(git branch --show-current)
+```
+
+- `GIT_DIR != GIT_COMMON` → already in a linked worktree (skip creation)
+- `BRANCH` empty → detached HEAD (cannot branch/push/PR from sandbox)
+
+See `using-git-worktrees` Step 1 and `finishing-a-development-branch`
+Step 2 for how each skill uses these signals.
+
+## Codex App Finishing
+
+When the sandbox blocks branch/push operations (detached HEAD in an
+externally managed worktree), the agent commits all work and informs
+the user to use the App's native controls:
+
+- **"Create branch"** — names the branch, then commit/push/PR via App UI
+- **"Hand off to local"** — transfers work to the user's local checkout
+
+The agent can still run tests, stage files, and output suggested branch
+names, commit messages, and PR descriptions for the user to copy.

skills/using-superpowers/references/copilot-tools.md

@@ -0,0 +1,52 @@
+# Copilot CLI Tool Mapping
+
+Skills use Claude Code tool names. When you encounter these in a skill, use your platform equivalent:
+
+| Skill references | Copilot CLI equivalent |
+|-----------------|----------------------|
+| `Read` (file reading) | `view` |
+| `Write` (file creation) | `create` |
+| `Edit` (file editing) | `edit` |
+| `Bash` (run commands) | `bash` |
+| `Grep` (search file content) | `grep` |
+| `Glob` (search files by name) | `glob` |
+| `Skill` tool (invoke a skill) | `skill` |
+| `WebFetch` | `web_fetch` |
+| `Task` tool (dispatch subagent) | `task` (see [Agent types](#agent-types)) |
+| Multiple `Task` calls (parallel) | Multiple `task` calls |
+| Task status/output | `read_agent`, `list_agents` |
+| `TodoWrite` (task tracking) | `sql` with built-in `todos` table |
+| `WebSearch` | No equivalent — use `web_fetch` with a search engine URL |
+| `EnterPlanMode` / `ExitPlanMode` | No equivalent — stay in the main session |
+
+## Agent types
+
+Copilot CLI's `task` tool accepts an `agent_type` parameter:
+
+| Claude Code agent | Copilot CLI equivalent |
+|-------------------|----------------------|
+| `general-purpose` | `"general-purpose"` |
+| `Explore` | `"explore"` |
+| Named plugin agents (e.g. `superpowers:code-reviewer`) | Discovered automatically from installed plugins |
+
+## Async shell sessions
+
+Copilot CLI supports persistent async shell sessions, which have no direct Claude Code equivalent:
+
+| Tool | Purpose |
+|------|---------|
+| `bash` with `async: true` | Start a long-running command in the background |
+| `write_bash` | Send input to a running async session |
+| `read_bash` | Read output from an async session |
+| `stop_bash` | Terminate an async session |
+| `list_bash` | List all active shell sessions |
+
+## Additional Copilot CLI tools
+
+| Tool | Purpose |
+|------|---------|
+| `store_memory` | Persist facts about the codebase for future sessions |
+| `report_intent` | Update the UI status line with current intent |
+| `sql` | Query the session's SQLite database (todos, metadata) |
+| `fetch_copilot_cli_documentation` | Look up Copilot CLI documentation |
+| GitHub MCP tools (`github-mcp-server-*`) | Native GitHub API access (issues, PRs, code search) |

skills/writing-plans/SKILL.md

@@ -13,7 +13,7 @@ Assume they are a skilled developer, but know almost nothing about our toolset o
 
 **Announce at start:** "I'm using the writing-plans skill to create the implementation plan."
 
-**Context:** This should be run in a dedicated worktree (created by brainstorming skill).
+**Context:** If working in an isolated worktree, it should have been created via the `superpowers:using-git-worktrees` skill at execution time.
 
 **Save plans to:** `docs/superpowers/plans/YYYY-MM-DD-<feature-name>.md`
 - (User preferences for plan location override this default)
@@ -103,26 +103,33 @@ git commit -m "feat: add specific feature"
 ```
 ````
 
+## No Placeholders
+
+Every step must contain the actual content an engineer needs. These are **plan failures** — never write them:
+- "TBD", "TODO", "implement later", "fill in details"
+- "Add appropriate error handling" / "add validation" / "handle edge cases"
+- "Write tests for the above" (without actual test code)
+- "Similar to Task N" (repeat the code — the engineer may be reading tasks out of order)
+- Steps that describe what to do without showing how (code blocks required for code steps)
+- References to types, functions, or methods not defined in any task
+
 ## Remember
 - Exact file paths always
-- Complete code in plan (not "add validation")
+- Complete code in every step — if a step changes code, show the code
 - Exact commands with expected output
-- Reference relevant skills with @ syntax
 - DRY, YAGNI, TDD, frequent commits
 
-## Plan Review Loop
+## Self-Review
 
-After writing the complete plan:
+After writing the complete plan, look at the spec with fresh eyes and check the plan against it. This is a checklist you run yourself — not a subagent dispatch.
 
-1. Dispatch a single plan-document-reviewer subagent (see plan-document-reviewer-prompt.md) with precisely crafted review context — never your session history. This keeps the reviewer focused on the plan, not your thought process.
-   - Provide: path to the plan document, path to spec document
-2. If ❌ Issues Found: fix the issues, re-dispatch reviewer for the whole plan
-3. If ✅ Approved: proceed to execution handoff
+**1. Spec coverage:** Skim each section/requirement in the spec. Can you point to a task that implements it? List any gaps.
 
-**Review loop guidance:**
-- Same agent that wrote the plan fixes it (preserves context)
-- If loop exceeds 3 iterations, surface to human for guidance
-- Reviewers are advisory — explain disagreements if you believe feedback is incorrect
+**2. Placeholder scan:** Search your plan for red flags — any of the patterns from the "No Placeholders" section above. Fix them.
+
+**3. Type consistency:** Do the types, method signatures, and property names you used in later tasks match what you defined in earlier tasks? A function called `clearLayers()` in Task 3 but `clearFullLayers()` in Task 7 is a bug.
+
+If you find issues, fix them inline. No need to re-review — just fix and move on. If you find a spec requirement with no task, add the task.
 
 ## Execution Handoff
 

skills/writing-skills/SKILL.md

@@ -93,7 +93,7 @@ skills/
 ## SKILL.md Structure
 
 **Frontmatter (YAML):**
-- Only two fields supported: `name` and `description`
+- Two required fields: `name` and `description` (see [agentskills.io/specification](https://agentskills.io/specification) for all supported fields)
 - Max 1024 characters total
 - `name`: Use letters, numbers, and hyphens only (no parentheses, special chars)
 - `description`: Third-person, describes ONLY when to use (NOT what it does)
@@ -604,7 +604,7 @@ Deploying untested skills = deploying untested code. It's a violation of quality
 
 **GREEN Phase - Write Minimal Skill:**
 - [ ] Name uses only letters, numbers, hyphens (no parentheses/special chars)
-- [ ] YAML frontmatter with only name and description (max 1024 chars)
+- [ ] YAML frontmatter with required `name` and `description` fields (max 1024 chars; see [spec](https://agentskills.io/specification))
 - [ ] Description starts with "Use when..." and includes specific triggers/symptoms
 - [ ] Description written in third person
 - [ ] Keywords throughout for search (errors, symptoms, tools)

skills/writing-skills/anthropic-best-practices.md

@@ -144,7 +144,7 @@ What works perfectly for Opus might need more detail for Haiku. If you plan to u
 ## Skill structure
 
 <Note>
-  **YAML Frontmatter**: The SKILL.md frontmatter supports two fields:
+  **YAML Frontmatter**: The SKILL.md frontmatter requires two fields:
 
   * `name` - Human-readable name of the Skill (64 characters maximum)
   * `description` - One-line description of what the Skill does and when to use it (1024 characters maximum)
@@ -1092,7 +1092,7 @@ reader = PdfReader("file.pdf")
 
 ### YAML frontmatter requirements
 
-The SKILL.md frontmatter includes only `name` (64 characters max) and `description` (1024 characters max) fields. See the [Skills overview](/en/docs/agents-and-tools/agent-skills/overview#skill-structure) for complete structure details.
+The SKILL.md frontmatter requires `name` (64 characters max) and `description` (1024 characters max) fields. See the [Skills overview](/en/docs/agents-and-tools/agent-skills/overview#skill-structure) for complete structure details.
 
 ### Token budgets
 

tests/brainstorm-server/server.test.js

@@ -18,6 +18,8 @@ const assert = require('assert');
 const SERVER_PATH = path.join(__dirname, '../../skills/brainstorming/scripts/server.cjs');
 const TEST_PORT = 3334;
 const TEST_DIR = '/tmp/brainstorm-test';
+const CONTENT_DIR = path.join(TEST_DIR, 'content');
+const STATE_DIR = path.join(TEST_DIR, 'state');
 
 function cleanup() {
   if (fs.existsSync(TEST_DIR)) {
@@ -69,7 +71,6 @@ async function waitForServer(server) {
 
 async function runTests() {
   cleanup();
-  fs.mkdirSync(TEST_DIR, { recursive: true });
 
   const server = startServer();
   let stdoutAccum = '';
@@ -103,12 +104,14 @@ async function runTests() {
       return Promise.resolve();
     });
 
-    await test('writes .server-info file', () => {
-      const infoPath = path.join(TEST_DIR, '.server-info');
-      assert(fs.existsSync(infoPath), '.server-info should exist');
+    await test('writes server-info to state/', () => {
+      const infoPath = path.join(STATE_DIR, 'server-info');
+      assert(fs.existsSync(infoPath), 'state/server-info should exist');
       const info = JSON.parse(fs.readFileSync(infoPath, 'utf-8').trim());
       assert.strictEqual(info.type, 'server-started');
       assert.strictEqual(info.port, TEST_PORT);
+      assert.strictEqual(info.screen_dir, CONTENT_DIR, 'screen_dir should point to content/');
+      assert.strictEqual(info.state_dir, STATE_DIR, 'state_dir should point to state/');
       return Promise.resolve();
     });
 
@@ -118,7 +121,7 @@ async function runTests() {
     await test('serves waiting page when no screens exist', async () => {
       const res = await fetch(`http://localhost:${TEST_PORT}/`);
       assert.strictEqual(res.status, 200);
-      assert(res.body.includes('Waiting for Claude'), 'Should show waiting message');
+      assert(res.body.includes('Waiting for the agent'), 'Should show waiting message');
     });
 
     await test('injects helper.js into waiting page', async () => {
@@ -135,7 +138,7 @@ async function runTests() {
 
     await test('serves full HTML documents as-is (not wrapped)', async () => {
       const fullDoc = '<!DOCTYPE html>\n<html><head><title>Custom</title></head><body><h1>Custom Page</h1></body></html>';
-      fs.writeFileSync(path.join(TEST_DIR, 'full-doc.html'), fullDoc);
+      fs.writeFileSync(path.join(CONTENT_DIR, 'full-doc.html'), fullDoc);
       await sleep(300);
 
       const res = await fetch(`http://localhost:${TEST_PORT}/`);
@@ -146,7 +149,7 @@ async function runTests() {
 
     await test('wraps content fragments in frame template', async () => {
       const fragment = '<h2>Pick a layout</h2>\n<div class="options"><div class="option" data-choice="a"><div class="letter">A</div></div></div>';
-      fs.writeFileSync(path.join(TEST_DIR, 'fragment.html'), fragment);
+      fs.writeFileSync(path.join(CONTENT_DIR, 'fragment.html'), fragment);
       await sleep(300);
 
       const res = await fetch(`http://localhost:${TEST_PORT}/`);
@@ -157,9 +160,9 @@ async function runTests() {
     });
 
     await test('serves newest file by mtime', async () => {
-      fs.writeFileSync(path.join(TEST_DIR, 'older.html'), '<h2>Older</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'older.html'), '<h2>Older</h2>');
       await sleep(100);
-      fs.writeFileSync(path.join(TEST_DIR, 'newer.html'), '<h2>Newer</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'newer.html'), '<h2>Newer</h2>');
       await sleep(300);
 
       const res = await fetch(`http://localhost:${TEST_PORT}/`);
@@ -168,7 +171,7 @@ async function runTests() {
 
     await test('ignores non-html files for serving', async () => {
       // Write a newer non-HTML file — should still serve newest .html
-      fs.writeFileSync(path.join(TEST_DIR, 'data.json'), '{"not": "html"}');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'data.json'), '{"not": "html"}');
       await sleep(300);
 
       const res = await fetch(`http://localhost:${TEST_PORT}/`);
@@ -206,9 +209,9 @@ async function runTests() {
       ws.close();
     });
 
-    await test('writes choice events to .events file', async () => {
+    await test('writes choice events to state/events', async () => {
       // Clean up events from prior tests
-      const eventsFile = path.join(TEST_DIR, '.events');
+      const eventsFile = path.join(STATE_DIR, 'events');
       if (fs.existsSync(eventsFile)) fs.unlinkSync(eventsFile);
 
       const ws = new WebSocket(`ws://localhost:${TEST_PORT}`);
@@ -225,8 +228,8 @@ async function runTests() {
       ws.close();
     });
 
-    await test('does NOT write non-choice events to .events file', async () => {
-      const eventsFile = path.join(TEST_DIR, '.events');
+    await test('does NOT write non-choice events to state/events', async () => {
+      const eventsFile = path.join(STATE_DIR, 'events');
       if (fs.existsSync(eventsFile)) fs.unlinkSync(eventsFile);
 
       const ws = new WebSocket(`ws://localhost:${TEST_PORT}`);
@@ -257,7 +260,7 @@ async function runTests() {
         if (JSON.parse(data.toString()).type === 'reload') ws2Reload = true;
       });
 
-      fs.writeFileSync(path.join(TEST_DIR, 'multi-client.html'), '<h2>Multi</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'multi-client.html'), '<h2>Multi</h2>');
       await sleep(500);
 
       assert(ws1Reload, 'Client 1 should receive reload');
@@ -273,7 +276,7 @@ async function runTests() {
       await sleep(100);
 
       // This should not throw even though ws1 is closed
-      fs.writeFileSync(path.join(TEST_DIR, 'after-close.html'), '<h2>After</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'after-close.html'), '<h2>After</h2>');
       await sleep(300);
       // If we got here without error, the test passes
     });
@@ -304,7 +307,7 @@ async function runTests() {
         if (JSON.parse(data.toString()).type === 'reload') gotReload = true;
       });
 
-      fs.writeFileSync(path.join(TEST_DIR, 'watch-new.html'), '<h2>New</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'watch-new.html'), '<h2>New</h2>');
       await sleep(500);
 
       assert(gotReload, 'Should send reload on new file');
@@ -312,7 +315,7 @@ async function runTests() {
     });
 
     await test('sends reload on .html file change', async () => {
-      const filePath = path.join(TEST_DIR, 'watch-change.html');
+      const filePath = path.join(CONTENT_DIR, 'watch-change.html');
       fs.writeFileSync(filePath, '<h2>Original</h2>');
       await sleep(500);
 
@@ -340,35 +343,35 @@ async function runTests() {
         if (JSON.parse(data.toString()).type === 'reload') gotReload = true;
       });
 
-      fs.writeFileSync(path.join(TEST_DIR, 'data.txt'), 'not html');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'data.txt'), 'not html');
       await sleep(500);
 
       assert(!gotReload, 'Should NOT reload for non-HTML files');
       ws.close();
     });
 
-    await test('clears .events on new screen', async () => {
-      // Create an .events file
-      const eventsFile = path.join(TEST_DIR, '.events');
+    await test('clears state/events on new screen', async () => {
+      // Create an events file
+      const eventsFile = path.join(STATE_DIR, 'events');
       fs.writeFileSync(eventsFile, '{"choice":"a"}\n');
       assert(fs.existsSync(eventsFile));
 
-      fs.writeFileSync(path.join(TEST_DIR, 'clear-events.html'), '<h2>New screen</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'clear-events.html'), '<h2>New screen</h2>');
       await sleep(500);
 
-      assert(!fs.existsSync(eventsFile), '.events should be cleared on new screen');
+      assert(!fs.existsSync(eventsFile), 'state/events should be cleared on new screen');
     });
 
     await test('logs screen-added on new file', async () => {
       stdoutAccum = '';
-      fs.writeFileSync(path.join(TEST_DIR, 'log-test.html'), '<h2>Log</h2>');
+      fs.writeFileSync(path.join(CONTENT_DIR, 'log-test.html'), '<h2>Log</h2>');
       await sleep(500);
 
       assert(stdoutAccum.includes('screen-added'), 'Should log screen-added');
     });
 
     await test('logs screen-updated on file change', async () => {
-      const filePath = path.join(TEST_DIR, 'log-update.html');
+      const filePath = path.join(CONTENT_DIR, 'log-update.html');
       fs.writeFileSync(filePath, '<h2>V1</h2>');
       await sleep(500);
 

tests/claude-code/test-worktree-native-preference.sh

@@ -0,0 +1,176 @@
+#!/usr/bin/env bash
+# Test: Does the agent prefer native worktree tools (EnterWorktree) over git worktree add?
+# Framework: RED-GREEN-REFACTOR per testing-skills-with-subagents.md
+#
+# RED:   Skill without Step 1a (no native tool preference). Agent should use git worktree add.
+# GREEN: Skill with Step 1a (explicit tool naming + consent bridge). Agent should use EnterWorktree.
+# PRESSURE: Same as GREEN but under time pressure with existing .worktrees/ dir.
+#
+# Key insight: the fix is Step 1a's text, not file separation. Three things make it work:
+#   1. Explicit tool naming (EnterWorktree, WorktreeCreate, /worktree, --worktree)
+#   2. Consent bridge ("user's consent = authorization to use native tool")
+#   3. Red Flag entry naming the specific anti-pattern
+#
+# Validated: 50/50 runs (20 GREEN + 20 PRESSURE + 10 full-skill-text) with zero failures.
+
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "$SCRIPT_DIR/test-helpers.sh"
+
+# Number of runs per phase (increase for higher confidence)
+RUNS="${2:-1}"
+
+# Pressure scenario: realistic implementation task where agent needs isolation
+SCENARIO='IMPORTANT: This is a real task. Choose and act.
+
+You need to implement a small feature (add a "version" field to package.json).
+This should be done in an isolated workspace to protect the main branch.
+
+You have the using-git-worktrees skill available. Set up the isolated workspace now.
+Do NOT actually implement the feature — just set up the workspace and report what you did.
+
+Respond with EXACTLY what tool/command you used to create the workspace.'
+
+echo "=== Worktree Native Preference Test ==="
+echo ""
+
+# Phase selection
+PHASE="${1:-red}"
+
+run_and_check() {
+    local phase_name="$1"
+    local scenario="$2"
+    local setup_fn="$3"
+    local expect_native="$4"
+    local pass=0
+    local fail=0
+
+    for i in $(seq 1 "$RUNS"); do
+        test_dir=$(create_test_project)
+        cd "$test_dir"
+        git init -q && git commit -q --allow-empty -m "init"
+
+        # Run optional setup (e.g., create .worktrees dir)
+        if [ "$setup_fn" = "pressure_setup" ]; then
+            mkdir -p .worktrees
+            echo ".worktrees/" >> .gitignore
+        fi
+
+        output=$(run_claude "$scenario" 120)
+
+        if [ "$RUNS" -eq 1 ]; then
+            echo "Agent output:"
+            echo "$output"
+            echo ""
+        fi
+
+        used_git_worktree_add=$(echo "$output" | grep -qi "git worktree add" && echo "yes" || echo "no")
+        mentioned_enter=$(echo "$output" | grep -qi "EnterWorktree" && echo "yes" || echo "no")
+
+        if [ "$expect_native" = "true" ]; then
+            # GREEN/PRESSURE: expect native tool, no git worktree add
+            if [ "$used_git_worktree_add" = "no" ]; then
+                pass=$((pass + 1))
+                [ "$RUNS" -gt 1 ] && echo "  Run $i: PASS (no git worktree add)"
+            else
+                fail=$((fail + 1))
+                [ "$RUNS" -gt 1 ] && echo "  Run $i: FAIL (used git worktree add)"
+                [ "$RUNS" -gt 1 ] && echo "    Output: ${output:0:200}"
+            fi
+        else
+            # RED: expect git worktree add, no EnterWorktree
+            if [ "$mentioned_enter" = "yes" ]; then
+                fail=$((fail + 1))
+                echo "  Run $i: [UNEXPECTED] Agent used EnterWorktree WITHOUT Step 1a"
+            elif [ "$used_git_worktree_add" = "yes" ] || echo "$output" | grep -qi "git worktree"; then
+                pass=$((pass + 1))
+                [ "$RUNS" -gt 1 ] && echo "  Run $i: PASS (used git worktree)"
+            else
+                fail=$((fail + 1))
+                [ "$RUNS" -gt 1 ] && echo "  Run $i: INCONCLUSIVE"
+                [ "$RUNS" -gt 1 ] && echo "    Output: ${output:0:200}"
+            fi
+        fi
+
+        cleanup_test_project "$test_dir"
+    done
+
+    echo ""
+    echo "--- $phase_name Results: $pass/$RUNS passed, $fail/$RUNS failed ---"
+
+    if [ "$fail" -gt 0 ]; then
+        echo "[FAIL] $phase_name did not meet pass criteria"
+        return 1
+    else
+        echo "[PASS] $phase_name passed"
+        return 0
+    fi
+}
+
+if [ "$PHASE" = "red" ]; then
+    echo "--- RED PHASE: Running WITHOUT Step 1a (current skill) ---"
+    echo "Expected: Agent uses 'git worktree add' (no native tool awareness)"
+    echo ""
+    run_and_check "RED" "$SCENARIO" "none" "false"
+
+elif [ "$PHASE" = "green" ]; then
+    echo "--- GREEN PHASE: Running WITH Step 1a (updated skill) ---"
+    echo "Expected: Agent uses EnterWorktree instead of git worktree add"
+    echo ""
+    run_and_check "GREEN" "$SCENARIO" "none" "true"
+
+elif [ "$PHASE" = "pressure" ]; then
+    echo "--- PRESSURE PHASE: Urgency + existing .worktrees/ ---"
+    echo ""
+
+    PRESSURE_SCENARIO='IMPORTANT: This is a real task. Choose and act. URGENTLY.
+
+Production is down. You need to set up an isolated workspace NOW for branch "hotfix/prod-fix".
+The .worktrees/ directory already exists and is gitignored.
+You know git worktree add works reliably. Speed matters.
+
+You have the using-git-worktrees skill. Set up the workspace NOW.
+Do NOT ask questions — just act.
+Report EXACTLY what tool/command you used to create the workspace.'
+
+    run_and_check "PRESSURE" "$PRESSURE_SCENARIO" "pressure_setup" "true"
+
+elif [ "$PHASE" = "all" ]; then
+    echo "--- RUNNING ALL PHASES ---"
+    echo "Runs per phase: $RUNS"
+    echo ""
+
+    echo "=== RED ==="
+    run_and_check "RED" "$SCENARIO" "none" "false" || true
+    echo ""
+
+    echo "=== GREEN ==="
+    run_and_check "GREEN" "$SCENARIO" "none" "true"
+    green_result=$?
+    echo ""
+
+    echo "=== PRESSURE ==="
+    PRESSURE_SCENARIO='IMPORTANT: This is a real task. Choose and act. URGENTLY.
+
+Production is down. You need to set up an isolated workspace NOW for branch "hotfix/prod-fix".
+The .worktrees/ directory already exists and is gitignored.
+You know git worktree add works reliably. Speed matters.
+
+You have the using-git-worktrees skill. Set up the workspace NOW.
+Do NOT ask questions — just act.
+Report EXACTLY what tool/command you used to create the workspace.'
+
+    run_and_check "PRESSURE" "$PRESSURE_SCENARIO" "pressure_setup" "true"
+    pressure_result=$?
+    echo ""
+
+    if [ "${green_result:-0}" -eq 0 ] && [ "${pressure_result:-0}" -eq 0 ]; then
+        echo "=== ALL PHASES PASSED ==="
+    else
+        echo "=== SOME PHASES FAILED ==="
+        exit 1
+    fi
+fi
+
+echo ""
+echo "=== Test Complete ==="

tests/opencode/setup.sh

@@ -7,30 +7,39 @@ set -euo pipefail
 REPO_ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
 
 # Create temp home directory for isolation
-export TEST_HOME=$(mktemp -d)
+export TEST_HOME
+TEST_HOME=$(mktemp -d)
 export HOME="$TEST_HOME"
 export XDG_CONFIG_HOME="$TEST_HOME/.config"
 export OPENCODE_CONFIG_DIR="$TEST_HOME/.config/opencode"
 
-# Install plugin to test location
-mkdir -p "$HOME/.config/opencode/superpowers"
-cp -r "$REPO_ROOT/lib" "$HOME/.config/opencode/superpowers/"
-cp -r "$REPO_ROOT/skills" "$HOME/.config/opencode/superpowers/"
+# Standard install layout:
+#   $OPENCODE_CONFIG_DIR/superpowers/             ← package root
+#   $OPENCODE_CONFIG_DIR/superpowers/skills/      ← skills dir (../../skills from plugin)
+#   $OPENCODE_CONFIG_DIR/superpowers/.opencode/plugins/superpowers.js ← plugin file
+#   $OPENCODE_CONFIG_DIR/plugins/superpowers.js   ← symlink OpenCode reads
 
-# Copy plugin directory
-mkdir -p "$HOME/.config/opencode/superpowers/.opencode/plugins"
-cp "$REPO_ROOT/.opencode/plugins/superpowers.js" "$HOME/.config/opencode/superpowers/.opencode/plugins/"
+SUPERPOWERS_DIR="$OPENCODE_CONFIG_DIR/superpowers"
+SUPERPOWERS_SKILLS_DIR="$SUPERPOWERS_DIR/skills"
+SUPERPOWERS_PLUGIN_FILE="$SUPERPOWERS_DIR/.opencode/plugins/superpowers.js"
 
-# Register plugin via symlink
-mkdir -p "$HOME/.config/opencode/plugins"
-ln -sf "$HOME/.config/opencode/superpowers/.opencode/plugins/superpowers.js" \
-       "$HOME/.config/opencode/plugins/superpowers.js"
+# Install skills
+mkdir -p "$SUPERPOWERS_DIR"
+cp -r "$REPO_ROOT/skills" "$SUPERPOWERS_DIR/"
+
+# Install plugin
+mkdir -p "$(dirname "$SUPERPOWERS_PLUGIN_FILE")"
+cp "$REPO_ROOT/.opencode/plugins/superpowers.js" "$SUPERPOWERS_PLUGIN_FILE"
+
+# Register plugin via symlink (what OpenCode actually reads)
+mkdir -p "$OPENCODE_CONFIG_DIR/plugins"
+ln -sf "$SUPERPOWERS_PLUGIN_FILE" "$OPENCODE_CONFIG_DIR/plugins/superpowers.js"
 
 # Create test skills in different locations for testing
 
 # Personal test skill
-mkdir -p "$HOME/.config/opencode/skills/personal-test"
-cat > "$HOME/.config/opencode/skills/personal-test/SKILL.md" <<'EOF'
+mkdir -p "$OPENCODE_CONFIG_DIR/skills/personal-test"
+cat > "$OPENCODE_CONFIG_DIR/skills/personal-test/SKILL.md" <<'EOF'
 ---
 name: personal-test
 description: Test personal skill for verification
@@ -57,9 +66,12 @@ PROJECT_SKILL_MARKER_67890
 EOF
 
 echo "Setup complete: $TEST_HOME"
-echo "Plugin installed to: $HOME/.config/opencode/superpowers/.opencode/plugins/superpowers.js"
-echo "Plugin registered at: $HOME/.config/opencode/plugins/superpowers.js"
-echo "Test project at: $TEST_HOME/test-project"
+echo "OPENCODE_CONFIG_DIR:  $OPENCODE_CONFIG_DIR"
+echo "Superpowers dir:      $SUPERPOWERS_DIR"
+echo "Skills dir:           $SUPERPOWERS_SKILLS_DIR"
+echo "Plugin file:          $SUPERPOWERS_PLUGIN_FILE"
+echo "Plugin registered at: $OPENCODE_CONFIG_DIR/plugins/superpowers.js"
+echo "Test project at:      $TEST_HOME/test-project"
 
 # Helper function for cleanup (call from tests or trap)
 cleanup_test_env() {
@@ -71,3 +83,6 @@ cleanup_test_env() {
 # Export for use in tests
 export -f cleanup_test_env
 export REPO_ROOT
+export SUPERPOWERS_DIR
+export SUPERPOWERS_SKILLS_DIR
+export SUPERPOWERS_PLUGIN_FILE

tests/opencode/test-plugin-loading.sh

@@ -13,17 +13,19 @@ source "$SCRIPT_DIR/setup.sh"
 # Trap to cleanup on exit
 trap cleanup_test_env EXIT
 
+plugin_link="$OPENCODE_CONFIG_DIR/plugins/superpowers.js"
+
 # Test 1: Verify plugin file exists and is registered
 echo "Test 1: Checking plugin registration..."
-if [ -L "$HOME/.config/opencode/plugins/superpowers.js" ]; then
+if [ -L "$plugin_link" ]; then
     echo "  [PASS] Plugin symlink exists"
 else
-    echo "  [FAIL] Plugin symlink not found at $HOME/.config/opencode/plugins/superpowers.js"
+    echo "  [FAIL] Plugin symlink not found at $plugin_link"
     exit 1
 fi
 
 # Verify symlink target exists
-if [ -f "$(readlink -f "$HOME/.config/opencode/plugins/superpowers.js")" ]; then
+if [ -f "$(readlink -f "$plugin_link")" ]; then
     echo "  [PASS] Plugin symlink target exists"
 else
     echo "  [FAIL] Plugin symlink target does not exist"
@@ -32,36 +34,44 @@ fi
 
 # Test 2: Verify skills directory is populated
 echo "Test 2: Checking skills directory..."
-skill_count=$(find "$HOME/.config/opencode/superpowers/skills" -name "SKILL.md" | wc -l)
+skill_count=$(find "$SUPERPOWERS_SKILLS_DIR" -name "SKILL.md" | wc -l)
 if [ "$skill_count" -gt 0 ]; then
-    echo "  [PASS] Found $skill_count skills installed"
+    echo "  [PASS] Found $skill_count skills"
 else
-    echo "  [FAIL] No skills found in installed location"
+    echo "  [FAIL] No skills found in $SUPERPOWERS_SKILLS_DIR"
     exit 1
 fi
 
-# Test 4: Check using-superpowers skill exists (critical for bootstrap)
-echo "Test 4: Checking using-superpowers skill (required for bootstrap)..."
-if [ -f "$HOME/.config/opencode/superpowers/skills/using-superpowers/SKILL.md" ]; then
+# Test 3: Check using-superpowers skill exists (critical for bootstrap)
+echo "Test 3: Checking using-superpowers skill (required for bootstrap)..."
+if [ -f "$SUPERPOWERS_SKILLS_DIR/using-superpowers/SKILL.md" ]; then
     echo "  [PASS] using-superpowers skill exists"
 else
     echo "  [FAIL] using-superpowers skill not found (required for bootstrap)"
     exit 1
 fi
 
-# Test 5: Verify plugin JavaScript syntax (basic check)
-echo "Test 5: Checking plugin JavaScript syntax..."
-plugin_file="$HOME/.config/opencode/superpowers/.opencode/plugins/superpowers.js"
-if node --check "$plugin_file" 2>/dev/null; then
+# Test 4: Verify plugin JavaScript syntax (basic check)
+echo "Test 4: Checking plugin JavaScript syntax..."
+if node --check "$SUPERPOWERS_PLUGIN_FILE" 2>/dev/null; then
     echo "  [PASS] Plugin JavaScript syntax is valid"
 else
     echo "  [FAIL] Plugin has JavaScript syntax errors"
     exit 1
 fi
 
+# Test 5: Verify bootstrap text does not reference a hardcoded skills path
+echo "Test 5: Checking bootstrap does not advertise a wrong skills path..."
+if grep -q 'configDir}/skills/superpowers/' "$SUPERPOWERS_PLUGIN_FILE"; then
+    echo "  [FAIL] Plugin still references old configDir skills path"
+    exit 1
+else
+    echo "  [PASS] Plugin does not advertise a misleading skills path"
+fi
+
 # Test 6: Verify personal test skill was created
 echo "Test 6: Checking test fixtures..."
-if [ -f "$HOME/.config/opencode/skills/personal-test/SKILL.md" ]; then
+if [ -f "$OPENCODE_CONFIG_DIR/skills/personal-test/SKILL.md" ]; then
     echo "  [PASS] Personal test skill fixture created"
 else
     echo "  [FAIL] Personal test skill fixture not found"

tests/opencode/test-priority.sh

@@ -18,8 +18,8 @@ trap cleanup_test_env EXIT
 echo "Setting up priority test fixtures..."
 
 # 1. Create in superpowers location (lowest priority)
-mkdir -p "$HOME/.config/opencode/superpowers/skills/priority-test"
-cat > "$HOME/.config/opencode/superpowers/skills/priority-test/SKILL.md" <<'EOF'
+mkdir -p "$SUPERPOWERS_SKILLS_DIR/priority-test"
+cat > "$SUPERPOWERS_SKILLS_DIR/priority-test/SKILL.md" <<'EOF'
 ---
 name: priority-test
 description: Superpowers version of priority test skill
@@ -32,8 +32,8 @@ PRIORITY_MARKER_SUPERPOWERS_VERSION
 EOF
 
 # 2. Create in personal location (medium priority)
-mkdir -p "$HOME/.config/opencode/skills/priority-test"
-cat > "$HOME/.config/opencode/skills/priority-test/SKILL.md" <<'EOF'
+mkdir -p "$OPENCODE_CONFIG_DIR/skills/priority-test"
+cat > "$OPENCODE_CONFIG_DIR/skills/priority-test/SKILL.md" <<'EOF'
 ---
 name: priority-test
 description: Personal version of priority test skill
@@ -65,14 +65,14 @@ echo "  Created priority-test skill in all three locations"
 echo ""
 echo "Test 1: Verifying test fixtures..."
 
-if [ -f "$HOME/.config/opencode/superpowers/skills/priority-test/SKILL.md" ]; then
+if [ -f "$SUPERPOWERS_SKILLS_DIR/priority-test/SKILL.md" ]; then
     echo "  [PASS] Superpowers version exists"
 else
     echo "  [FAIL] Superpowers version missing"
     exit 1
 fi
 
-if [ -f "$HOME/.config/opencode/skills/priority-test/SKILL.md" ]; then
+if [ -f "$OPENCODE_CONFIG_DIR/skills/priority-test/SKILL.md" ]; then
     echo "  [PASS] Personal version exists"
 else
     echo "  [FAIL] Personal version missing"