Add internationalization support for help view and implement help rendering logic

- Introduced `help-i18n.js` for managing translations in Chinese and English for the help view.
- Created `help.js` to render the help view, including command categories, workflow diagrams, and CodexLens quick-start.
- Implemented search functionality with debounce for command filtering.
- Added workflow diagram rendering with Cytoscape.js integration.
- Developed tests for write-file verification, ensuring proper handling of small and large JSON files.

ccw/WRITE_FILE_FIX_SUMMARY.md

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+# Write File Verification Enhancement
+
+## Problem
+`ccw/src/tools/write-file.ts` would return success messages claiming files were created, but in some cases (especially with long JSON files), the files were not actually written to disk.
+
+## Root Cause
+The write operation used `writeFileSync()` but **did not verify** that the file was successfully created afterward. In edge cases (file system issues, permission problems, disk space, etc.), the write could fail silently without proper error detection.
+
+## Solution
+Added comprehensive post-write verification in three layers:
+
+### 1. File Existence Check
+```typescript
+if (!existsSync(filePath)) {
+  return `File verification failed: file does not exist at ${filePath}`;
+}
+```
+
+### 2. File Size Verification
+```typescript
+const stats = statSync(filePath);
+if (stats.size !== expectedBytes) {
+  return `File verification failed: size mismatch (expected ${expectedBytes}B, actual ${stats.size}B)`;
+}
+```
+
+### 3. Content Read-Back Verification
+```typescript
+const readContent = readFileSync(filePath, { encoding });
+const actualBytes = Buffer.byteLength(readContent, encoding);
+if (actualBytes !== expectedBytes) {
+  return `File verification failed: content size mismatch after read`;
+}
+```
+
+## Changes Made
+
+### File: `ccw/src/tools/write-file.ts`
+
+1. **Added import**: `statSync` from 'fs' (line 13)
+2. **Added function**: `verifyFileWrite()` (lines 69-100) - Three-layer verification
+3. **Modified handler**: Added verification call after write (lines 188-195)
+4. **Enhanced messages**: All success messages now include "- verified" suffix
+
+### Test Coverage: `ccw/tests/write-file-verification.test.js`
+
+Created comprehensive test suite covering:
+- Small file writes
+- Large JSON files (>100KB)
+- Very large JSON files (>1MB)
+- Verification failure detection
+- Multiple encoding support
+
+## Test Results
+```
+tests 5
+pass 5
+fail 0
+
+Test execution times:
+- Small file: 3.7ms
+- Large JSON (>100KB): 46.8ms
+- Very large JSON (>1MB): 119ms
+```
+
+## Benefits
+
+1. **Reliability**: Files are guaranteed to exist and be complete
+2. **Error Detection**: Catches silent write failures immediately
+3. **Debugging**: Clear error messages indicate exact failure point
+4. **Long JSON Safety**: Special protection for large file writes
+5. **User Trust**: "verified" suffix confirms write success
+
+## Backward Compatibility
+✅ Fully backward compatible - all existing functionality preserved
+✅ Only adds verification step, no breaking changes
+✅ Minimal performance impact (ms range even for MB files)