chore: remove all better-sqlite3 references from codebase (#357)

* fix: export/import scripts now use API instead of direct DB access

Export script fix:
- Add format=json parameter to SearchManager for raw data output
- Add getSdkSessionsBySessionIds method to SessionStore
- Add POST /api/sdk-sessions/batch endpoint to DataRoutes
- Refactor export-memories.ts to use HTTP API

Import script fix:
- Add import methods to SessionStore with duplicate detection
- Add POST /api/import endpoint to DataRoutes
- Refactor import-memories.ts to use HTTP API

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: update analyze-transformations-smart.js to use bun:sqlite

Replace better-sqlite3 import with bun:sqlite to align with v7.1.0 migration.

* chore: remove all better-sqlite3 references from codebase

- Updated scripts/analyze-transformations-smart.js to use bun:sqlite
- Merged PR #332: Refactored import/export scripts to use worker API instead of direct DB access
- Updated PM2-to-Bun migration documentation

All better-sqlite3 references have been removed from source code.
Documentation references remain as appropriate historical context.

* build: update plugin artifacts with merged changes

Include built artifacts from PR #332 merge and analyze-transformations-smart.js update.

---------

Co-authored-by: lee <loyalpartner@163.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

scripts/analyze-transformations-smart.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 import fs from 'fs';
-import Database from 'better-sqlite3';
+import { Database } from 'bun:sqlite';
 import readline from 'readline';
 import path from 'path';
 import { homedir } from 'os';