added project express routes

packages/memory-service/src/db/projects.js

@@ -0,0 +1,37 @@
+const { getDB } = require('./index');
+const { parseRow } = require('@nexusai/shared');
+
+function createProject({ name, description, colour, icon }) {
+  const db = getDB();
+  const result = db.prepare(`
+    INSERT INTO projects (name, description, colour, icon)
+    VALUES (?, ?, ?, ?)
+  `).run(name, description ?? null, colour ?? null, icon ?? null);
+  return getProject(result.lastInsertRowid);
+}
+
+function getProjects() {
+  const db = getDB();
+  return db.prepare(`SELECT * FROM projects ORDER BY created_at DESC`).all().map(parseRow);
+}
+
+function getProject(id) {
+  const db = getDB();
+  return parseRow(db.prepare(`SELECT * FROM projects WHERE id = ?`).get(id));
+}
+
+function updateProject(id, { name, description, colour, icon }) {
+  const db = getDB();
+  db.prepare(`
+    UPDATE projects SET name = ?, description = ?, colour = ?, icon = ?
+    WHERE id = ?
+  `).run(name, description ?? null, colour ?? null, icon ?? null, id);
+  return getProject(id);
+}
+
+function deleteProject(id) {
+  const db = getDB();
+  db.prepare(`DELETE FROM projects WHERE id = ?`).run(id);
+}
+
+module.exports = { createProject, getProjects, getProject, updateProject, deleteProject };