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';

scripts/export-memories.ts

@@ -5,8 +5,7 @@
  * Example: npx tsx scripts/export-memories.ts "windows" windows-memories.json --project=claude-mem
  */
 
-import Database from 'better-sqlite3';
-import { existsSync, writeFileSync } from 'fs';
+import { writeFileSync } from 'fs';
 import { homedir } from 'os';
 import { join } from 'path';
 import { SettingsDefaultsManager } from '../src/shared/SettingsDefaultsManager';
@@ -127,33 +126,19 @@ async function exportMemories(query: string, outputFile: string, project?: strin
       if (s.sdk_session_id) sdkSessionIds.add(s.sdk_session_id);
     });
 
-    // Get SDK sessions metadata from database
-    // (We need this because the API doesn't expose sdk_sessions table directly)
+    // Get SDK sessions metadata via API
     console.log('📡 Fetching SDK sessions metadata...');
-    const sessions: SdkSessionRecord[] = [];
+    let sessions: SdkSessionRecord[] = [];
     if (sdkSessionIds.size > 0) {
-      // Read directly from database for sdk_sessions table
-      const Database = (await import('better-sqlite3')).default;
-      const dbPath = join(homedir(), '.claude-mem', 'claude-mem.db');
-
-      if (!existsSync(dbPath)) {
-        console.error(`❌ Database not found at: ${dbPath}`);
-        console.error('💡 Has claude-mem been initialized? Try running a session first.');
-        process.exit(1);
-      }
-
-      const db = new Database(dbPath, { readonly: true });
-
-      try {
-        const placeholders = Array.from(sdkSessionIds).map(() => '?').join(',');
-        const sessionQuery = `
-          SELECT * FROM sdk_sessions
-          WHERE sdk_session_id IN (${placeholders})
-          ORDER BY started_at_epoch DESC
-        `;
-        sessions.push(...db.prepare(sessionQuery).all(...Array.from(sdkSessionIds)));
-      } finally {
-        db.close();
+      const sessionsResponse = await fetch(`${baseUrl}/api/sdk-sessions/batch`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ sdkSessionIds: Array.from(sdkSessionIds) })
+      });
+      if (sessionsResponse.ok) {
+        sessions = await sessionsResponse.json();
+      } else {
+        console.warn(`⚠️ Failed to fetch SDK sessions: ${sessionsResponse.status}`);
       }
     }
     console.log(`✅ Found ${sessions.length} SDK sessions`);

scripts/import-memories.ts

@@ -3,37 +3,21 @@
  * Import memories from a JSON export file with duplicate prevention
  * Usage: npx tsx scripts/import-memories.ts <input-file>
  * Example: npx tsx scripts/import-memories.ts windows-memories.json
+ *
+ * This script uses the worker API instead of direct database access.
  */
 
-import Database from 'better-sqlite3';
 import { existsSync, readFileSync } from 'fs';
-import { homedir } from 'os';
-import { join } from 'path';
 
-interface ImportStats {
-  sessionsImported: number;
-  sessionsSkipped: number;
-  summariesImported: number;
-  summariesSkipped: number;
-  observationsImported: number;
-  observationsSkipped: number;
-  promptsImported: number;
-  promptsSkipped: number;
-}
+const WORKER_PORT = process.env.CLAUDE_MEM_WORKER_PORT || 37777;
+const WORKER_URL = `http://127.0.0.1:${WORKER_PORT}`;
 
-function importMemories(inputFile: string) {
+async function importMemories(inputFile: string) {
   if (!existsSync(inputFile)) {
     console.error(`❌ Input file not found: ${inputFile}`);
     process.exit(1);
   }
 
-  const dbPath = join(homedir(), '.claude-mem', 'claude-mem.db');
-
-  if (!existsSync(dbPath)) {
-    console.error(`❌ Database not found at: ${dbPath}`);
-    process.exit(1);
-  }
-
   // Read and parse export file
   const exportData = JSON.parse(readFileSync(inputFile, 'utf-8'));
 
@@ -47,190 +31,50 @@ function importMemories(inputFile: string) {
   console.log(`   • ${exportData.totalPrompts} prompts`);
   console.log('');
 
-  const db = new Database(dbPath);
-  const stats: ImportStats = {
-    sessionsImported: 0,
-    sessionsSkipped: 0,
-    summariesImported: 0,
-    summariesSkipped: 0,
-    observationsImported: 0,
-    observationsSkipped: 0,
-    promptsImported: 0,
-    promptsSkipped: 0
-  };
-
+  // Check if worker is running
   try {
-    // Prepare statements for duplicate checking
-    const checkSession = db.prepare('SELECT id FROM sdk_sessions WHERE claude_session_id = ?');
-    const checkSummary = db.prepare('SELECT id FROM session_summaries WHERE sdk_session_id = ?');
-    const checkObservation = db.prepare(`
-      SELECT id FROM observations
-      WHERE sdk_session_id = ?
-        AND title = ?
-        AND created_at_epoch = ?
-    `);
-    const checkPrompt = db.prepare(`
-      SELECT id FROM user_prompts
-      WHERE claude_session_id = ?
-        AND prompt_number = ?
-    `);
-
-    // Prepare insert statements
-    const insertSession = db.prepare(`
-      INSERT INTO sdk_sessions (
-        claude_session_id, sdk_session_id, project, user_prompt,
-        started_at, started_at_epoch, completed_at, completed_at_epoch,
-        status
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
-    `);
-
-    const insertSummary = db.prepare(`
-      INSERT INTO session_summaries (
-        sdk_session_id, project, request, investigated, learned,
-        completed, next_steps, files_read, files_edited, notes,
-        prompt_number, discovery_tokens, created_at, created_at_epoch
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-    `);
-
-    const insertObservation = db.prepare(`
-      INSERT INTO observations (
-        sdk_session_id, project, text, type, title, subtitle,
-        facts, narrative, concepts, files_read, files_modified,
-        prompt_number, discovery_tokens, created_at, created_at_epoch
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-    `);
-
-    const insertPrompt = db.prepare(`
-      INSERT INTO user_prompts (
-        claude_session_id, prompt_number, prompt_text,
-        created_at, created_at_epoch
-      ) VALUES (?, ?, ?, ?, ?)
-    `);
-
-    // Import in transaction
-    db.transaction(() => {
-      // 1. Import sessions first (dependency for everything else)
-      console.log('🔄 Importing sessions...');
-      for (const session of exportData.sessions) {
-        const exists = checkSession.get(session.claude_session_id);
-        if (exists) {
-          stats.sessionsSkipped++;
-          continue;
-        }
-
-        insertSession.run(
-          session.claude_session_id,
-          session.sdk_session_id,
-          session.project,
-          session.user_prompt,
-          session.started_at,
-          session.started_at_epoch,
-          session.completed_at,
-          session.completed_at_epoch,
-          session.status
-        );
-        stats.sessionsImported++;
-      }
-      console.log(`   ✅ Imported: ${stats.sessionsImported}, Skipped: ${stats.sessionsSkipped}`);
-
-      // 2. Import summaries (depends on sessions)
-      console.log('🔄 Importing summaries...');
-      for (const summary of exportData.summaries) {
-        const exists = checkSummary.get(summary.sdk_session_id);
-        if (exists) {
-          stats.summariesSkipped++;
-          continue;
-        }
-
-        insertSummary.run(
-          summary.sdk_session_id,
-          summary.project,
-          summary.request,
-          summary.investigated,
-          summary.learned,
-          summary.completed,
-          summary.next_steps,
-          summary.files_read,
-          summary.files_edited,
-          summary.notes,
-          summary.prompt_number,
-          summary.discovery_tokens || 0,
-          summary.created_at,
-          summary.created_at_epoch
-        );
-        stats.summariesImported++;
-      }
-      console.log(`   ✅ Imported: ${stats.summariesImported}, Skipped: ${stats.summariesSkipped}`);
-
-      // 3. Import observations (depends on sessions)
-      console.log('🔄 Importing observations...');
-      for (const obs of exportData.observations) {
-        const exists = checkObservation.get(
-          obs.sdk_session_id,
-          obs.title,
-          obs.created_at_epoch
-        );
-        if (exists) {
-          stats.observationsSkipped++;
-          continue;
-        }
-
-        insertObservation.run(
-          obs.sdk_session_id,
-          obs.project,
-          obs.text,
-          obs.type,
-          obs.title,
-          obs.subtitle,
-          obs.facts,
-          obs.narrative,
-          obs.concepts,
-          obs.files_read,
-          obs.files_modified,
-          obs.prompt_number,
-          obs.discovery_tokens || 0,
-          obs.created_at,
-          obs.created_at_epoch
-        );
-        stats.observationsImported++;
-      }
-      console.log(`   ✅ Imported: ${stats.observationsImported}, Skipped: ${stats.observationsSkipped}`);
-
-      // 4. Import prompts (depends on sessions)
-      console.log('🔄 Importing prompts...');
-      for (const prompt of exportData.prompts) {
-        const exists = checkPrompt.get(
-          prompt.claude_session_id,
-          prompt.prompt_number
-        );
-        if (exists) {
-          stats.promptsSkipped++;
-          continue;
-        }
-
-        insertPrompt.run(
-          prompt.claude_session_id,
-          prompt.prompt_number,
-          prompt.prompt_text,
-          prompt.created_at,
-          prompt.created_at_epoch
-        );
-        stats.promptsImported++;
-      }
-      console.log(`   ✅ Imported: ${stats.promptsImported}, Skipped: ${stats.promptsSkipped}`);
-
-    })();
-
-    console.log('\n✅ Import complete!');
-    console.log('📊 Summary:');
-    console.log(`   Sessions:     ${stats.sessionsImported} imported, ${stats.sessionsSkipped} skipped`);
-    console.log(`   Summaries:    ${stats.summariesImported} imported, ${stats.summariesSkipped} skipped`);
-    console.log(`   Observations: ${stats.observationsImported} imported, ${stats.observationsSkipped} skipped`);
-    console.log(`   Prompts:      ${stats.promptsImported} imported, ${stats.promptsSkipped} skipped`);
-
-  } finally {
-    db.close();
+    const healthCheck = await fetch(`${WORKER_URL}/api/stats`);
+    if (!healthCheck.ok) {
+      throw new Error('Worker not responding');
+    }
+  } catch (error) {
+    console.error(`❌ Worker not running at ${WORKER_URL}`);
+    console.error('   Please ensure the claude-mem worker is running.');
+    process.exit(1);
   }
+
+  console.log('🔄 Importing via worker API...');
+
+  // Send import request to worker
+  const response = await fetch(`${WORKER_URL}/api/import`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json'
+    },
+    body: JSON.stringify({
+      sessions: exportData.sessions || [],
+      summaries: exportData.summaries || [],
+      observations: exportData.observations || [],
+      prompts: exportData.prompts || []
+    })
+  });
+
+  if (!response.ok) {
+    const errorText = await response.text();
+    console.error(`❌ Import failed: ${response.status} ${response.statusText}`);
+    console.error(`   ${errorText}`);
+    process.exit(1);
+  }
+
+  const result = await response.json();
+  const stats = result.stats;
+
+  console.log('\n✅ Import complete!');
+  console.log('📊 Summary:');
+  console.log(`   Sessions:     ${stats.sessionsImported} imported, ${stats.sessionsSkipped} skipped`);
+  console.log(`   Summaries:    ${stats.summariesImported} imported, ${stats.summariesSkipped} skipped`);
+  console.log(`   Observations: ${stats.observationsImported} imported, ${stats.observationsSkipped} skipped`);
+  console.log(`   Prompts:      ${stats.promptsImported} imported, ${stats.promptsSkipped} skipped`);
 }
 
 // CLI interface