fix: resolve codex exec -C repo root eagerly to prevent wrong-project reviews

When codex exec commands run in background bash tasks (e.g., Conductor
workspaces), $(git rev-parse --show-toplevel) evaluates in whatever cwd
the background shell inherits, which may be a different project. Fix by
resolving _REPO_ROOT once at the top of each bash block and referencing
the stored value in -C.

12 occurrences fixed across 4 source files:
- codex/SKILL.md.tmpl (3)
- autoplan/SKILL.md.tmpl (3)
- scripts/resolvers/review.ts (3)
- scripts/resolvers/design.ts (3)

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

scripts/resolvers/design.ts

@@ -17,7 +17,8 @@ If Codex is available, run a lightweight design check on the diff:
 
 \`\`\`bash
 TMPERR_DRL=$(mktemp /tmp/codex-drl-XXXXXXXX)
-codex exec "Review the git diff on this branch. Run 7 litmus checks (YES/NO each): ${litmusList} Flag any hard rejections: ${rejectionList} 5 most important design findings only. Reference file:line." -C "$(git rev-parse --show-toplevel)" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_DRL"
+_REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
+codex exec "Review the git diff on this branch. Run 7 litmus checks (YES/NO each): ${litmusList} Flag any hard rejections: ${rejectionList} 5 most important design findings only. Reference file:line." -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_DRL"
 \`\`\`
 
 Use a 5-minute timeout (\`timeout: 300000\`). After the command completes, read stderr:
@@ -467,7 +468,8 @@ If user chooses A, launch both voices simultaneously:
 1. **Codex** (via Bash, \`model_reasoning_effort="medium"\`):
 \`\`\`bash
 TMPERR_SKETCH=$(mktemp /tmp/codex-sketch-XXXXXXXX)
-codex exec "For this product approach, provide: a visual thesis (one sentence — mood, material, energy), a content plan (hero → support → detail → CTA), and 2 interaction ideas that change page feel. Apply beautiful defaults: composition-first, brand-first, cardless, poster not document. Be opinionated." -C "$(git rev-parse --show-toplevel)" -s read-only -c 'model_reasoning_effort="medium"' --enable web_search_cached 2>"$TMPERR_SKETCH"
+_REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
+codex exec "For this product approach, provide: a visual thesis (one sentence — mood, material, energy), a content plan (hero → support → detail → CTA), and 2 interaction ideas that change page feel. Apply beautiful defaults: composition-first, brand-first, cardless, poster not document. Be opinionated." -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="medium"' --enable web_search_cached 2>"$TMPERR_SKETCH"
 \`\`\`
 Use a 5-minute timeout (\`timeout: 300000\`). After completion: \`cat "$TMPERR_SKETCH" && rm -f "$TMPERR_SKETCH"\`
 
@@ -636,7 +638,8 @@ which codex 2>/dev/null && echo "CODEX_AVAILABLE" || echo "CODEX_NOT_AVAILABLE"
 1. **Codex design voice** (via Bash):
 \`\`\`bash
 TMPERR_DESIGN=$(mktemp /tmp/codex-design-XXXXXXXX)
-codex exec "${escapedCodexPrompt}" -C "$(git rev-parse --show-toplevel)" -s read-only -c 'model_reasoning_effort="${reasoningEffort}"' --enable web_search_cached 2>"$TMPERR_DESIGN"
+_REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
+codex exec "${escapedCodexPrompt}" -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="${reasoningEffort}"' --enable web_search_cached 2>"$TMPERR_DESIGN"
 \`\`\`
 Use a 5-minute timeout (\`timeout: 300000\`). After the command completes, read stderr:
 \`\`\`bash

scripts/resolvers/review.ts

@@ -292,7 +292,8 @@ Write the full prompt (context block + instructions) to this file. Use the mode-
 
 \`\`\`bash
 TMPERR_OH=$(mktemp /tmp/codex-oh-err-XXXXXXXX)
-codex exec "$(cat "$CODEX_PROMPT_FILE")" -C "$(git rev-parse --show-toplevel)" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_OH"
+_REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
+codex exec "$(cat "$CODEX_PROMPT_FILE")" -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_OH"
 \`\`\`
 
 Use a 5-minute timeout (\`timeout: 300000\`). After the command completes, read stderr:
@@ -376,7 +377,8 @@ Claude's structured review already ran. Now add a **cross-model adversarial chal
 
 \`\`\`bash
 TMPERR_ADV=$(mktemp /tmp/codex-adv-XXXXXXXX)
-codex exec "Review the changes on this branch against the base branch. Run git diff origin/<base> to see the diff. Your job is to find ways this code will fail in production. Think like an attacker and a chaos engineer. Find edge cases, race conditions, security holes, resource leaks, failure modes, and silent data corruption paths. Be adversarial. Be thorough. No compliments — just the problems." -C "$(git rev-parse --show-toplevel)" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_ADV"
+_REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
+codex exec "Review the changes on this branch against the base branch. Run git diff origin/<base> to see the diff. Your job is to find ways this code will fail in production. Think like an attacker and a chaos engineer. Find edge cases, race conditions, security holes, resource leaks, failure modes, and silent data corruption paths. Be adversarial. Be thorough. No compliments — just the problems." -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_ADV"
 \`\`\`
 
 Set the Bash tool's \`timeout\` parameter to \`300000\` (5 minutes). Do NOT use the \`timeout\` shell command — it doesn't exist on macOS. After the command completes, read stderr:
@@ -531,7 +533,8 @@ THE PLAN:
 
 \`\`\`bash
 TMPERR_PV=$(mktemp /tmp/codex-planreview-XXXXXXXX)
-codex exec "<prompt>" -C "$(git rev-parse --show-toplevel)" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_PV"
+_REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
+codex exec "<prompt>" -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_PV"
 \`\`\`
 
 Use a 5-minute timeout (\`timeout: 300000\`). After the command completes, read stderr: