From 11ab4a9218042ef60052f9acfe11a339b1028557 Mon Sep 17 00:00:00 2001
From: Lex Christopherson <lex@glittercowboy.com>
Date: Tue, 20 Jan 2026 09:51:59 -0600
Subject: [PATCH] feat(04-01): add sql.js dependency and graph schema

- Add sql.js ^1.12.0 dependency for WASM SQLite
- Add GRAPH_SCHEMA constant with nodes/edges tables
- Nodes use virtual id from JSON body for upserts
- Edges indexed by source and target for relationship queries

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 hooks/gsd-intel-index.js | 19 +++++++++++++++++++
 package.json             |  3 +++
 2 files changed, 22 insertions(+)

diff --git a/hooks/gsd-intel-index.js b/hooks/gsd-intel-index.js
index b371beef8..a02bf2386 100755
--- a/hooks/gsd-intel-index.js
+++ b/hooks/gsd-intel-index.js
@@ -5,6 +5,25 @@
 
 const fs = require('fs');
 const path = require('path');
+const initSqlJs = require('sql.js');
+
+// Graph database schema (simple-graph pattern)
+const GRAPH_SCHEMA = `
+CREATE TABLE IF NOT EXISTS nodes (
+  body TEXT,
+  id TEXT GENERATED ALWAYS AS (json_extract(body, '$.id')) VIRTUAL NOT NULL UNIQUE
+);
+CREATE INDEX IF NOT EXISTS id_idx ON nodes(id);
+
+CREATE TABLE IF NOT EXISTS edges (
+  source TEXT NOT NULL,
+  target TEXT NOT NULL,
+  relationship TEXT DEFAULT 'depends_on',
+  UNIQUE(source, target, relationship) ON CONFLICT REPLACE
+);
+CREATE INDEX IF NOT EXISTS source_idx ON edges(source);
+CREATE INDEX IF NOT EXISTS target_idx ON edges(target);
+`;
 
 // JS/TS file extensions to index
 const INDEXABLE_EXTENSIONS = ['.js', '.ts', '.jsx', '.tsx', '.mjs', '.cjs'];
diff --git a/package.json b/package.json
index d2d924ce9..36cde3f88 100644
--- a/package.json
+++ b/package.json
@@ -32,5 +32,8 @@
   },
   "engines": {
     "node": ">=16.7.0"
+  },
+  "dependencies": {
+    "sql.js": "^1.12.0"
   }
 }