fix: resolve hook crashes and CLAUDE_PLUGIN_ROOT fallback (#1215, #1220) (#1229)

* fix: resolve PostToolUse hook crashes and 5s latency (#1220)

Three compounding bugs caused hook failures:

1. Missing break statements in worker-service.ts switch — if async
   code threw before process.exit(), execution fell through to
   subsequent cases. Added break to all 7 cases missing them.

2. Unhandled promise rejection on main() — added .catch() that logs
   the error and exits 0 (per project exit code strategy: don't block
   Claude Code or leave Windows Terminal tabs open).

3. Redundant start commands in hooks.json — PostToolUse,
   UserPromptSubmit, and Stop groups each had a standalone start
   command that was redundant (the hook case already calls
   ensureWorkerStarted internally). The redundant start also caused
   5s latency via bun-runner.js collectStdin() timeout since Claude
   Code never closes stdin.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: add CLAUDE_PLUGIN_ROOT fallback for Stop hooks (#1215)

Upstream Claude Code bug (anthropics/claude-code#24529) leaves
CLAUDE_PLUGIN_ROOT unset for Stop hooks on macOS and ALL hooks
on Linux. Two-layer defense:

1. Shell-level: hooks.json commands now use inline fallback
   _R="${CLAUDE_PLUGIN_ROOT}"; [ -z "$_R" ] && _R="$HOME/...";
   falling back to the known marketplace install path.

2. Script-level: bun-runner.js self-resolves plugin root from
   its own filesystem location via import.meta.url, and fixes
   broken /scripts/... paths that result from empty expansion.

Added test to verify all hook commands include the fallback path.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/services/worker-service.ts

@@ -1027,6 +1027,7 @@ async function main() {
       } else {
         exitWithStatus('error', 'Failed to start worker');
       }
+      break;
     }
 
     case 'stop': {
@@ -1038,6 +1039,7 @@ async function main() {
       removePidFile();
       logger.info('SYSTEM', 'Worker stopped successfully');
       process.exit(0);
+      break;
     }
 
     case 'restart': {
@@ -1074,6 +1076,7 @@ async function main() {
 
       logger.info('SYSTEM', 'Worker restarted successfully');
       process.exit(0);
+      break;
     }
 
     case 'status': {
@@ -1088,12 +1091,14 @@ async function main() {
         console.log('Worker is not running');
       }
       process.exit(0);
+      break;
     }
 
     case 'cursor': {
       const subcommand = process.argv[3];
       const cursorResult = await handleCursorCommand(subcommand, process.argv.slice(4));
       process.exit(cursorResult);
+      break;
     }
 
     case 'hook': {
@@ -1147,6 +1152,7 @@ async function main() {
       const { generateClaudeMd } = await import('../cli/claude-md-commands.js');
       const result = await generateClaudeMd(dryRun);
       process.exit(result);
+      break;
     }
 
     case 'clean': {
@@ -1154,6 +1160,7 @@ async function main() {
       const { cleanClaudeMd } = await import('../cli/claude-md-commands.js');
       const result = await cleanClaudeMd(dryRun);
       process.exit(result);
+      break;
     }
 
     case '--daemon':
@@ -1210,5 +1217,8 @@ const isMainModule = typeof require !== 'undefined' && typeof module !== 'undefi
   : import.meta.url === `file://${process.argv[1]}` || process.argv[1]?.endsWith('worker-service');
 
 if (isMainModule) {
-  main();
+  main().catch((error) => {
+    logger.error('SYSTEM', 'Fatal error in main', {}, error instanceof Error ? error : undefined);
+    process.exit(0);  // Exit 0: don't block Claude Code, don't leave Windows Terminal tabs open
+  });
 }