Add comprehensive tests for keyword detection, session state management, and user abort detection

- Implement tests for KeywordDetector including keyword detection, sanitization, and priority handling.
- Add tests for SessionStateService covering session validation, loading, saving, and state updates.
- Create tests for UserAbortDetector to validate user abort detection logic and pattern matching.

ccw/src/core/hooks/index.ts

@@ -0,0 +1,60 @@
+/**
+ * Core Hooks Module
+ *
+ * Provides detector functions and utilities for Claude Code hooks integration.
+ */
+
+// Context Limit Detector
+export {
+  isContextLimitStop,
+  getMatchingContextPattern,
+  getAllMatchingContextPatterns,
+  CONTEXT_LIMIT_PATTERNS,
+  type StopContext
+} from './context-limit-detector.js';
+
+// User Abort Detector
+export {
+  isUserAbort,
+  getMatchingAbortPattern,
+  getAllMatchingAbortPatterns,
+  shouldAllowContinuation,
+  USER_ABORT_EXACT_PATTERNS,
+  USER_ABORT_SUBSTRING_PATTERNS,
+  USER_ABORT_PATTERNS
+} from './user-abort-detector.js';
+
+// Keyword Detector
+export {
+  detectKeywords,
+  hasKeyword,
+  getAllKeywords,
+  getPrimaryKeyword,
+  getKeywordType,
+  hasKeywordType,
+  sanitizeText,
+  removeCodeBlocks,
+  KEYWORD_PATTERNS,
+  KEYWORD_PRIORITY,
+  type KeywordType,
+  type DetectedKeyword
+} from './keyword-detector.js';
+
+// Stop Handler
+export {
+  StopHandler,
+  createStopHandler,
+  defaultStopHandler,
+  type ExtendedStopContext,
+  type StopResult,
+  type StopHandlerOptions
+} from './stop-handler.js';
+
+// Recovery Handler
+export {
+  RecoveryHandler,
+  createRecoveryHandler,
+  type PreCompactInput,
+  type HookOutput,
+  type RecoveryHandlerOptions
+} from './recovery-handler.js';