fix: remove sqlite3 CLI fallback — no more subprocess spawning

better-sqlite3 returns [] silently if unavailable (not installed as
native module in extension context). sqlite3 CLI fallback is completely
removed — it was the root cause of sqlite3.exe pile-up on every poll.

Cursor Sessions tab shows 0 if better-sqlite3 not present; safe > broken.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Myoontyee

package-lock.json

@@ -2,7 +2,7 @@
   "name": "claude-code-exporter",
   "displayName": "Claude Code Exporter — Claude Code, Codex & Cursor Conversation History",
   "description": "Export AI coding agent conversations to Markdown. Supports Claude Code (→ .claude-code-history/), OpenAI Codex (→ .codex-history/), and Cursor Composer (→ .cursor-history/). Features: auto-watch, session inject/import for claude --resume, and repair of thinking-block signature errors when switching API providers.",
-  "version": "0.7.3",
+  "version": "0.7.4",
   "publisher": "myoontyee",
   "engines": {
     "vscode": "^1.85.0"

package.json

@@ -12,7 +12,6 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import * as cp from 'child_process';
 
 // ─── Data model ────────────────────────────────────────────────────────────────
 
@@ -32,12 +31,14 @@ export interface CursorConversation {
   messages:    CursorMessage[];
 }
 
-// ─── SQLite bridge (via better-sqlite3 or sqlite3 CLI fallback) ────────────────
+// ─── SQLite bridge ─────────────────────────────────────────────────────────────
+// Uses better-sqlite3 only (must be installed separately as a native module).
+// NO subprocess fallback — spawning sqlite3.exe causes process pile-up.
+// If better-sqlite3 is unavailable, returns [] silently.
 
 type Row = Record<string, unknown>;
 
 function queryDb(dbPath: string, sql: string, params: (string | number)[] = []): Row[] {
-  // Primary: try better-sqlite3 (no native issues in recent VS Code versions)
   try {
     // eslint-disable-next-line @typescript-eslint/no-var-requires
     const Database = require('better-sqlite3');
@@ -46,29 +47,8 @@ function queryDb(dbPath: string, sql: string, params: (string | number)[] = []):
     const rows = params.length ? stmt.all(...params) : stmt.all();
     db.close();
     return rows as Row[];
-  } catch (primaryErr) {
-    // Fallback: sqlite3 CLI
-    try {
-      const escaped = sql.replace(/'/g, "''");
-      // Substitute params manually (only used for simple string queries here)
-      let finalSql = sql;
-      for (const p of params) {
-        finalSql = finalSql.replace('?', typeof p === 'string' ? `'${p}'` : String(p));
-      }
-      const raw = cp.execSync(`sqlite3 -json "${dbPath}" "${finalSql.replace(/"/g, '\\"')}"`, {
-        encoding: 'utf8',
-        timeout: 3000,
-        killSignal: 'SIGKILL',
-      });
-      return JSON.parse(raw || '[]') as Row[];
-    } catch {
-      throw new Error(
-        `Cannot read SQLite database at ${dbPath}.\n` +
-        `Install better-sqlite3: npm install better-sqlite3\n` +
-        `Or install sqlite3 CLI: https://sqlite.org/download.html\n` +
-        `Original error: ${primaryErr}`
-      );
-    }
+  } catch {
+    return [];  // silently return empty — never spawn a subprocess
   }
 }