fix: update stale references and restore silence safety net (PRI-974)

Post-inversion cleanup:

- executing-plans, subagent-driven-development: update Integration
  description from "Ensures isolated workspace" to "Detects workspace
  environment and offers worktree isolation on request"
- codex-tools.md: update step references (Step 0→1, Step 1→2)
- using-git-worktrees Step 2: restore "silence → ask once more" instead
  of "silence → work in place" to preserve safety net for confused users

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

skills/executing-plans/SKILL.md

@@ -65,6 +65,6 @@ After all tasks complete and verified:
 ## Integration
 
 **Required workflow skills:**
-- **superpowers:using-git-worktrees** - Ensures isolated workspace (creates one or verifies existing)
+- **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/subagent-driven-development/SKILL.md

@@ -265,7 +265,7 @@ Done!
 ## Integration
 
 **Required workflow skills:**
-- **superpowers:using-git-worktrees** - Ensures isolated workspace (creates one or verifies existing)
+- **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/using-git-worktrees/SKILL.md

@@ -56,7 +56,7 @@ Tell the user their options, then **wait for a reply**:
 - **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** → 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.
 

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

@@ -84,8 +84,8 @@ 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 for how each skill uses these signals.
+See `using-git-worktrees` Step 1 and `finishing-a-development-branch`
+Step 2 for how each skill uses these signals.
 
 ## Codex App Finishing