Fix nodejs-mobile integration: override process.exit to prevent abort

Claude Code calls process.exit(1) during initialization (e.g., when
not logged in), which kills the entire Node.js runtime embedded in iSH.
Override process.exit in bootstrap to prevent this.

Also added exit trace logging to /tmp/exit-trace.txt for debugging.

Result: Claude Code CLI loads successfully inside iSH on ARM64 iOS.
Status: LOADED (with Intl warning caught as uncaughtException).

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

Author: evnchn

app/claude-native/bootstrap.mjs

@@ -1,4 +1,17 @@
 import net from 'net';
+import path from 'path';
+import { fileURLToPath } from 'url';
+var __dirname = path.dirname(fileURLToPath(import.meta.url));
 Object.defineProperty(process, 'title', { get: function() { return 'c'; }, set: function() {} });
-var s = net.createServer(function(c) { c.write('ALIVE\n'); c.end(); });
-s.listen(7331, '0.0.0.0');
+// Override process.exit at JS level
+var _origExit = process.exit;
+process.exit = function(code) {
+    try { require('fs').appendFileSync('/tmp/exit-trace.txt', 'exit('+code+') ' + new Error().stack.split('\n')[1] + '\n'); } catch(x) {}
+};
+var s = 'start', e = '';
+var srv = net.createServer(function(c) { c.write(s+'\n'+e+'\n'); c.end(); });
+srv.listen(7331, '0.0.0.0');
+process.on('uncaughtException', function(x) { e = x.message; s = 'crash'; });
+process.on('unhandledRejection', function(x) { e = (x&&x.message)||String(x); });
+s = 'importing';
+import(path.join(__dirname, 'claude_cli.js')).then(function() { s = 'LOADED'; }).catch(function(x) { e = x.message; s = 'err'; });