[Bug] v1.5.0 requires FTS5 which is missing in official Node.js builds

[xsdxq-null]

This issue was generated by an AI assistant (Codex/OpenAI).

Description

codegraph v1.5.0 uses Node.js built-in node:sqlite and requires FTS5, but official Node.js binaries do not compile FTS5 by default. This causes codegraph init and codegraph index to fail on any standard Node.js installation.

Environment

• OS: Windows 11 (also affects all platforms)
• Node.js: v22.14.0 (official build from nodejs.org)
• codegraph: v1.5.0
• SQLite version: 3.47.2 (no ENABLE_FTS5 in compile_options)

Error

[ERR] Failed to index: no such module: fts5

Direct reproduction:`javascript
const { DatabaseSync } = require('node:sqlite');
const db = new DatabaseSync(':memory:');
db.exec('CREATE VIRTUAL TABLE t USING fts5(content)');
// Error: no such module: fts5
``n

Root Cause

Node.js node:sqlite module uses SQLite compiled WITHOUT FTS5 extension. codegraph v1.5.0 relies on FTS5 for full-text search (CREATE VIRTUAL TABLE ... USING fts5).

Suggestions

1. Detect FTS5 at runtime, fallback to LIKE-based or FTS4 search
2. Document FTS5 as a requirement
3. Make FTS5 optional for basic indexing

Workaround

npm install -g @colbymchenry/codegraph@1.0.1