feat: claude-auto-retry v0.1.0

Auto-retry Claude Code sessions when hitting Anthropic subscription rate limits.
Uses tmux monitoring + send-keys to detect rate limit messages, wait for reset,
and send "continue" automatically. Zero dependencies, zero workflow change.

- Shell wrapper intercepts `claude` command transparently
- Background monitor polls tmux pane for rate limit patterns
- Timezone-aware reset time parsing with DST safety
- Safe send-keys with foreground process verification
- --print mode: buffers output, retries cleanly for pipes
- Config validation prevents bad values from causing crashes
- 59 tests, 0 dependencies

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

test/logger.test.js

@@ -0,0 +1,37 @@
+import { describe, it, afterEach } from 'node:test';
+import assert from 'node:assert/strict';
+import { createLogger } from '../src/logger.js';
+import { readFile, rm } from 'node:fs/promises';
+import { join } from 'node:path';
+import { tmpdir } from 'node:os';
+
+describe('createLogger', () => {
+  const testDir = join(tmpdir(), `car-logger-test-${Date.now()}`);
+
+  afterEach(async () => { await rm(testDir, { recursive: true, force: true }); });
+
+  it('creates log directory and writes log entry', async () => {
+    const logger = createLogger(testDir);
+    await logger.info('test message');
+    const today = new Date().toISOString().split('T')[0];
+    const content = await readFile(join(testDir, `${today}.log`), 'utf-8');
+    assert.ok(content.includes('test message'));
+    assert.ok(content.includes('[INFO]'));
+  });
+  it('includes timestamp in log entries', async () => {
+    const logger = createLogger(testDir);
+    await logger.info('timestamped');
+    const today = new Date().toISOString().split('T')[0];
+    const content = await readFile(join(testDir, `${today}.log`), 'utf-8');
+    assert.match(content, /\[\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\]/);
+  });
+  it('supports warn and error levels', async () => {
+    const logger = createLogger(testDir);
+    await logger.warn('warning msg');
+    await logger.error('error msg');
+    const today = new Date().toISOString().split('T')[0];
+    const content = await readFile(join(testDir, `${today}.log`), 'utf-8');
+    assert.ok(content.includes('[WARN]'));
+    assert.ok(content.includes('[ERROR]'));
+  });
+});