feat(storage): implement storage manager for centralized management and cleanup

- Added a new Storage Manager component to handle storage statistics, project cleanup, and configuration for CCW centralized storage.
- Introduced functions to calculate directory sizes, get project storage stats, and clean specific or all storage.
- Enhanced SQLiteStore with a public API for executing queries securely.
- Updated tests to utilize the new execute_query method and validate storage management functionalities.
- Improved performance by implementing connection pooling with idle timeout management in SQLiteStore.
- Added new fields (token_count, symbol_type) to the symbols table and adjusted related insertions.
- Enhanced error handling and logging for storage operations.

.claude/commands/workflow/lite-fix.md

@@ -80,9 +80,21 @@ const bugSlug = bug_description.toLowerCase().replace(/[^a-z0-9]+/g, '-').substr
 const dateStr = getUtc8ISOString().substring(0, 10)  // Format: 2025-11-29
 
 const sessionId = `${bugSlug}-${dateStr}`  // e.g., "user-avatar-upload-fails-2025-11-29"
-const sessionFolder = `.workflow/.lite-fix/${sessionId}`
 
-bash(`mkdir -p ${sessionFolder} && test -d ${sessionFolder} && echo "SUCCESS: ${sessionFolder}" || echo "FAILED: ${sessionFolder}"`)
+// Initialize session via session_manager tool
+const initResult = await ccw_tool_exec('session_manager', {
+  operation: 'init',
+  session_id: sessionId,
+  location: 'lite-fix',
+  metadata: {
+    description: bug_description,
+    severity: severity,  // Set after severity assessment
+    created_at: getUtc8ISOString()
+  }
+})
+
+const sessionFolder = initResult.result.path
+console.log(`Session initialized: ${sessionId} at ${sessionFolder}`)
 ```
 
 **Diagnosis Decision Logic**:

.claude/commands/workflow/lite-plan.md

@@ -80,9 +80,21 @@ const taskSlug = task_description.toLowerCase().replace(/[^a-z0-9]+/g, '-').subs
 const dateStr = getUtc8ISOString().substring(0, 10)  // Format: 2025-11-29
 
 const sessionId = `${taskSlug}-${dateStr}`  // e.g., "implement-jwt-refresh-2025-11-29"
-const sessionFolder = `.workflow/.lite-plan/${sessionId}`
 
-bash(`mkdir -p ${sessionFolder} && test -d ${sessionFolder} && echo "SUCCESS: ${sessionFolder}" || echo "FAILED: ${sessionFolder}"`)
+// Initialize session via session_manager tool
+const initResult = await ccw_tool_exec('session_manager', {
+  operation: 'init',
+  session_id: sessionId,
+  location: 'lite-plan',
+  metadata: {
+    description: task_description,
+    complexity: complexity,  // Set after complexity assessment
+    created_at: getUtc8ISOString()
+  }
+})
+
+const sessionFolder = initResult.result.path
+console.log(`Session initialized: ${sessionId} at ${sessionFolder}`)
 ```
 
 **Exploration Decision Logic**: