chore(ai-workflow): track repo-managed review tooling (#1046)

* chore(ai-workflow): track repo-managed review tooling

* fix(ai-workflow): remove repo-specific path assumptions

Make shared workflow hooks and APK testing guidance resolve paths from the repo and contributor environment so the tooling works for all contributors, not just one machine.

.codex/hooks/yarn-install.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+# afterFileEdit hook: Run yarn install when package.json is changed
+# Receives JSON via stdin: {"file_path": "...", "edits": [...]}
+
+# Read stdin (required for hooks)
+input=$(cat)
+
+# Extract file_path using grep/sed (jq-free for portability)
+file_path=$(echo "$input" | grep -o '"file_path"[[:space:]]*:[[:space:]]*"[^"]*"' | sed 's/.*:.*"\([^"]*\)"/\1/')
+
+# Exit if no file path found
+if [ -z "$file_path" ]; then
+  exit 0
+fi
+
+# Only run yarn install if package.json was changed
+if [ "$file_path" = "package.json" ]; then
+  # Change to project directory
+  cd "$(dirname "$0")/../.." || exit 0
+  
+  echo "package.json changed - running yarn install to update yarn.lock..."
+  yarn install
+fi
+
+exit 0