fix: patch 7 critical bugs affecting all non-dev-machine users and Windows

1. Fix esbuild inlining build-machine __dirname as string literal — use
   CJS-compatible runtime banner with require("node:url").fileURLToPath
   across worker-service, mcp-server, and context-generator builds.

2. Fix isMainModule check missing .cjs extension and Windows backslash
   path normalization.

3. Wrap extractLastMessage in try-catch to prevent infinite Stop hook
   feedback loop on malformed transcripts (exit 0 instead of exit 2).

4. Replace heavy SessionEnd hook (Node→Bun→1.7MB CJS→HTTP) with
   lightweight inline node -e one-liner (~200ms vs >1s).

5. Add 7 Gemini/OpenRouter error patterns to unrecoverablePatterns
   circuit breaker to prevent 77K+ retry loops on expired API keys.

6. Preserve CLAUDE_CODE_OAUTH_TOKEN and CLAUDE_CODE_GIT_BASH_PATH in
   sanitizeEnv instead of stripping them with the CLAUDE_CODE_ prefix.

7. Use PowerShell -EncodedCommand for spawnDaemon to fix path quoting
   when Windows usernames contain spaces.

Closes #1515, #1495, #1475, #1465, #1500, #1513, #1512, #1450, #1460,
#1486, #1449, #1481, #1451, #1480, #1453, #1445

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

scripts/build-hooks.js

@@ -116,7 +116,11 @@ async function buildHooks() {
         '__DEFAULT_PACKAGE_VERSION__': `"${version}"`
       },
       banner: {
-        js: '#!/usr/bin/env bun'
+        js: [
+          '#!/usr/bin/env bun',
+          'var __filename = require("node:url").fileURLToPath(import.meta.url);',
+          'var __dirname = require("node:path").dirname(__filename);'
+        ].join('\n')
       }
     });
 
@@ -153,7 +157,11 @@ async function buildHooks() {
         '__DEFAULT_PACKAGE_VERSION__': `"${version}"`
       },
       banner: {
-        js: '#!/usr/bin/env node'
+        js: [
+          '#!/usr/bin/env node',
+          'var __filename = require("node:url").fileURLToPath(import.meta.url);',
+          'var __dirname = require("node:path").dirname(__filename);'
+        ].join('\n')
       }
     });
 
@@ -176,6 +184,12 @@ async function buildHooks() {
       external: ['bun:sqlite'],
       define: {
         '__DEFAULT_PACKAGE_VERSION__': `"${version}"`
+      },
+      banner: {
+        js: [
+          'var __filename = require("node:url").fileURLToPath(import.meta.url);',
+          'var __dirname = require("node:path").dirname(__filename);'
+        ].join('\n')
       }
     });