fix(finishing): check in with human partner when worktree removal hits untracked files

git worktree remove refuses when the tree holds modified or untracked
files, and the skill gave no guidance for that refusal — the natural
agent response was --force, permanently destroying files that exist
nowhere else (uncommitted plans, notes, scratch work). Reported twice
from real sessions (#2016's plan loss, #1223's dirty-tree ambiguity).

Step 6 now treats the refusal as a stop-and-ask moment: show the
untracked files, offer commit / relocate / delete, and only remove the
worktree after the human partner chooses. Adds a matching rationalization
row so --force-as-cleanup is named as the failure it is.

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

@@ -174,6 +174,29 @@ git worktree remove "$WORKTREE_PATH"
 git worktree prune  # Self-healing: clean up any stale registrations
 ```
 
+**If removal is refused** (`contains modified or untracked files`): the
+worktree holds files that exist nowhere else — uncommitted plans, notes,
+or scratch work. Never `--force` on your own initiative. Show your human
+partner what is at stake and ask:
+
+```bash
+git -C "$WORKTREE_PATH" status --porcelain
+```
+
+```
+Worktree removal refused — these files were never committed:
+
+<file list>
+
+1. Commit them to <branch> before cleanup
+2. Move them into <main repo root>
+3. Delete them (unrecoverable)
+
+Which?
+```
+
+Carry out the choice, then remove the worktree.
+
 **Otherwise:** The host environment owns this workspace — leave it in
 place. If your platform provides a workspace-exit tool, use it.
 
@@ -196,6 +219,7 @@ place. If your platform provides a workspace-exit tool, use it.
 | "'Yeah, get rid of it' counts as confirmation" | Only the typed word `discard` authorizes deletion. |
 | "The PR is up, so the worktree is clutter now" | PR feedback gets fixed in that worktree. It stays until the work lands. |
 | "This other worktree looks stale — I'll clean it too" | Clean up only worktrees under `.worktrees/` or `worktrees/`. Everything else belongs to the host. |
+| "Removal refused — `--force` is just finishing the cleanup" | The refusal means files exist only in that worktree. `--force` destroys them permanently. Show your human partner and ask. |
 | "The merged-result failure is probably flaky" | A failing merged result stops everything. Branch and worktree stay put while you investigate. |
 | "The base branch is obviously main" | Confirm the fork point or ask. Merging into the wrong base is expensive to undo. |
 | "The push was rejected — force-push will fix it" | A rejected push means the remote moved. Investigate; force-push only on your human partner's explicit request. |

skills/systematic-debugging/find-polluter.sh

@@ -18,9 +18,18 @@ echo "🔍 Searching for test that creates: $POLLUTION_CHECK"
 echo "Test pattern: $TEST_PATTERN"
 echo ""
 
-# Get list of test files
-TEST_FILES=$(find . -path "$TEST_PATTERN" | sort)
-TOTAL=$(echo "$TEST_FILES" | wc -l | tr -d ' ')
+# Get list of test files (find . emits ./-prefixed paths, so accept the
+# pattern written with or without a leading ./)
+TEST_PATTERN="${TEST_PATTERN#./}"
+# find -path can't match '**/' against zero directory levels, so a pattern
+# like src/**/*.test.ts would skip src/top.test.ts; also try the pattern
+# with '**/' collapsed to cover files directly under the base directory.
+TEST_FILES=$(find . \( -path "./$TEST_PATTERN" -o -path "./${TEST_PATTERN//\*\*\//}" \) | sort -u)
+if [ -z "$TEST_FILES" ]; then
+  TOTAL=0
+else
+  TOTAL=$(printf '%s\n' "$TEST_FILES" | wc -l | tr -d ' ')
+fi
 
 echo "Found $TOTAL test files"
 echo ""

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

@@ -4,7 +4,7 @@ Skills speak in actions ("dispatch a subagent", "create a todo", "read a file").
 
 | Action skills request | Antigravity CLI equivalent |
 |----------------------|----------------------|
-| Dispatch a subagent (`Subagent (general-purpose):` template) | `invoke_subagent` with a built-in `TypeName` — `self` for full-capability work, `research` for read-only (see [Subagent support](#subagent-support)) |
+| Dispatch a subagent (`Subagent (general-purpose):` template) | `invoke_subagent` with a built-in `TypeName` — `self` for full-capability work, `research` for read-only |
 | Task tracking ("create a todo", "mark complete") | a **task artifact** — `write_to_file` with `IsArtifact: true` and `ArtifactType: "task"` (see [Task tracking](#task-tracking)). **Not** `manage_task`, which manages background processes. |
 
 ## Task tracking

tests/systematic-debugging/test-find-polluter.sh

@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+SCRIPT_UNDER_TEST="$REPO_ROOT/skills/systematic-debugging/find-polluter.sh"
+
+FAILURES=0
+TEST_ROOT="$(mktemp -d)"
+
+cleanup() {
+  rm -rf "$TEST_ROOT"
+}
+trap cleanup EXIT
+
+pass() {
+  echo "  [PASS] $1"
+}
+
+fail() {
+  echo "  [FAIL] $1"
+  FAILURES=$((FAILURES + 1))
+}
+
+assert_contains() {
+  local haystack="$1"
+  local needle="$2"
+  local description="$3"
+
+  if printf '%s' "$haystack" | grep -Fq -- "$needle"; then
+    pass "$description"
+  else
+    fail "$description (expected output to contain: $needle)"
+  fi
+}
+
+# Toy project: one top-level test, one nested test. A stubbed `npm` on PATH
+# creates the pollution marker whenever any test runs, so the first test file
+# executed is always identified as the polluter.
+setup_project() {
+  PROJECT="$TEST_ROOT/project"
+  rm -rf "$PROJECT"
+  mkdir -p "$PROJECT/src/feature" "$PROJECT/bin"
+  echo "test('top')" > "$PROJECT/src/top.test.ts"
+  echo "test('nested')" > "$PROJECT/src/feature/nested.test.ts"
+  cat > "$PROJECT/bin/npm" <<'EOF'
+#!/usr/bin/env bash
+touch pollution.marker
+EOF
+  chmod +x "$PROJECT/bin/npm"
+}
+
+# run_polluter <pattern> — runs the script in the toy project with the stub
+# npm first on PATH; captures combined output, never aborts on exit code.
+run_polluter() {
+  local pattern="$1"
+  rm -f "$PROJECT/pollution.marker"
+  (
+    cd "$PROJECT"
+    PATH="$PROJECT/bin:$PATH" "$SCRIPT_UNDER_TEST" 'pollution.marker' "$pattern" 2>&1
+  ) || true
+}
+
+echo "Test: documented pattern finds nested test files (issue #2008)"
+setup_project
+OUTPUT="$(run_polluter 'src/**/*.test.ts')"
+assert_contains "$OUTPUT" "FOUND POLLUTER" "documented pattern runs tests and detects pollution"
+
+echo "Test: documented pattern also finds top-level test files"
+setup_project
+OUTPUT="$(run_polluter 'src/**/*.test.ts')"
+assert_contains "$OUTPUT" "Found 2 test files" "src/**/*.test.ts matches src/top.test.ts and src/feature/nested.test.ts"
+
+echo "Test: ./-prefixed pattern matches the same files"
+setup_project
+OUTPUT="$(run_polluter './src/**/*.test.ts')"
+assert_contains "$OUTPUT" "Found 2 test files" "leading ./ on the pattern is accepted"
+
+echo "Test: non-matching pattern reports an honest zero"
+setup_project
+OUTPUT="$(run_polluter 'nomatch/**/*.test.ts')"
+assert_contains "$OUTPUT" "Found 0 test files" "empty result counts as 0, not 1"
+assert_contains "$OUTPUT" "No polluter found" "empty result exits via the clean path"
+
+echo ""
+if [ "$FAILURES" -gt 0 ]; then
+  echo "$FAILURES test(s) failed"
+  exit 1
+fi
+echo "All tests passed"