fix(tests): make runner worktree exclusions relative to the search root

Both runners excluded */.claude/worktrees/* by absolute path, which
filtered out every test when the repo itself is a Claude worktree.
Search from inside the root so only nested worktrees are skipped.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/run-bats.sh

@@ -45,11 +45,17 @@ fi
 # land at .claude/skills/<name>/tests/ and be discovered and run a second time,
 # which is ADR-0024 consequence 2 arriving here. Keeping the exclusion now is
 # what stops that landing as a mystery double-run on the merge that enables it.
+#
+# The walk runs from inside REPO_ROOT so the exclusions match paths RELATIVE to
+# it, the same universe the `git ls-files` grep below sees. Matched against
+# absolute paths, `*/.claude/worktrees/*` excluded every file whenever the
+# checkout itself was a Claude worktree (<repo>/.claude/worktrees/<name>/), and
+# the run failed with "N of N tracked .bats file(s) were not discovered".
 TEST_FILES=()
 while IFS= read -r f; do
-    TEST_FILES+=("$f")
+    TEST_FILES+=("$REPO_ROOT/${f#./}")
 done < <(
-    find "$REPO_ROOT" -name "*.bats" \
+    cd "$REPO_ROOT" && find . -name "*.bats" \
         -not -path "*/tests/bats/*" \
         -not -path "*/test_helper/*" \
         -not -path "*/.claude/worktrees/*" \