feat: content store con seed, cache e fallback

src/lib/db.ts

@@ -1,6 +1,7 @@
 import Database from 'better-sqlite3';
 import { mkdirSync } from 'node:fs';
 import { dirname } from 'node:path';
+import { contentSeed } from '../data/content-seed';
 
 const SCHEMA = `
 CREATE TABLE IF NOT EXISTS posts (
@@ -49,6 +50,9 @@ export function createDb(path?: string): Database.Database {
   if (!userCols.some((c) => c.name === 'role')) {
     db.exec(`ALTER TABLE users ADD COLUMN role TEXT NOT NULL DEFAULT 'admin'`);
   }
+  const ins = db.prepare('INSERT OR IGNORE INTO content_blocks (tag, type, value) VALUES (?, ?, ?)');
+  const syncTx = db.transaction(() => { for (const e of contentSeed) ins.run(e.tag, e.type, e.value); });
+  syncTx();
   return db;
 }