feat(Smartchok): Migrate to chokidar 4.x with picomatch glob support, update documentation and tests

readme.hints.md

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- 
+# smartchok - Technical Hints
+
+## Chokidar 4.x Migration (2024)
+
+The module has been migrated from `@tempfix/watcher` to `chokidar` 4.x. Key changes:
+
+### Dependencies
+- **Removed**: `@tempfix/watcher` (a fork of fabiospampinato/watcher)
+- **Added**: `chokidar` 4.x and `picomatch`
+
+### Why picomatch?
+Chokidar 4.x removed built-in glob pattern support. We use `picomatch` to maintain backward compatibility and provide glob pattern matching functionality.
+
+### Implementation Details
+1. **Glob pattern extraction**: The `getGlobBase()` method extracts base directories from glob patterns
+2. **Pattern matching**: Each glob pattern is compiled to a picomatch matcher function
+3. **Event filtering**: File system events are filtered based on glob patterns before being emitted
+4. **Path normalization**: Paths are normalized to handle different formats (with/without leading ./)
+
+### Event Handling
+Chokidar 4.x events are mapped 1:1 with smartchok events:
+- `add`, `change`, `unlink`: File events
+- `addDir`, `unlinkDir`: Directory events  
+- `error`: Error events
+- `raw`: Raw events from underlying watchers
+- `ready`: Emitted when initial scan is complete
+
+### Testing
+All existing tests pass without modification, confirming backward compatibility is maintained.