feat(frontend): wa-sqlite memory-only + Factureaza + Vite polling + Appointments + Catalog

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

frontend/src/db/database.js

@@ -1,5 +1,4 @@
-import SQLiteESMFactory from '@journeyapps/wa-sqlite/dist/wa-sqlite-async.mjs'
-import { IDBBatchAtomicVFS } from '@journeyapps/wa-sqlite/src/examples/IDBBatchAtomicVFS.js'
+import SQLiteESMFactory from '@journeyapps/wa-sqlite/dist/wa-sqlite.mjs'
 import * as SQLite from '@journeyapps/wa-sqlite'
 import { SCHEMA_SQL } from './schema.js'
 
@@ -7,14 +6,19 @@ let db = null
 let sqlite3 = null
 const tableListeners = new Map()
 
-export async function initDatabase() {
-  if (db) return db
+let initPromise = null
+
+export function initDatabase() {
+  if (initPromise) return initPromise
+  initPromise = _init()
+  return initPromise
+}
+
+async function _init() {
   const module = await SQLiteESMFactory()
   sqlite3 = SQLite.Factory(module)
-  const vfs = await IDBBatchAtomicVFS.create('roaauto', module)
-  sqlite3.vfs_register(vfs, true)
-  db = await sqlite3.open_v2('roaauto.db',
-    SQLite.SQLITE_OPEN_READWRITE | SQLite.SQLITE_OPEN_CREATE, 'roaauto')
+  db = await sqlite3.open_v2(':memory:')
+
   for (const sql of SCHEMA_SQL.split(';').filter(s => s.trim())) {
     await sqlite3.exec(db, sql)
   }
@@ -34,10 +38,20 @@ export function onTableChange(table, cb) {
 export async function execSQL(sql, params = []) {
   if (!db) throw new Error('DB not initialized')
   const results = []
-  await sqlite3.exec(db, sql, (row, cols) => {
-    const obj = {}
-    cols.forEach((c, i) => { obj[c] = row[i] })
-    results.push(obj)
-  })
+
+  if (params.length === 0) {
+    await sqlite3.exec(db, sql, (row, cols) => {
+      results.push(Object.fromEntries(cols.map((c, i) => [c, row[i]])))
+    })
+  } else {
+    for await (const stmt of sqlite3.statements(db, sql)) {
+      sqlite3.bind_collection(stmt, params)
+      const cols = sqlite3.column_names(stmt)
+      while ((await sqlite3.step(stmt)) === SQLite.SQLITE_ROW) {
+        results.push(Object.fromEntries(cols.map((c, i) => [c, sqlite3.column(stmt, i)])))
+      }
+    }
+  }
+
   return results
 }