Refactor database configuration to support SQLite only

- Updated drizzle.config.ts to remove PostgreSQL support and default to SQLite configuration.
- Removed PostgreSQL migration files and related schemas.
- Simplified database connection logic in db/index.ts and related files to focus solely on SQLite.
- Adjusted frontend setup forms and validation to reflect the removal of PostgreSQL options.
- Cleaned up Lucia authentication integration to work exclusively with SQLite.
- Updated error handling and logging for database operations to align with the new SQLite-only approach.

Author: Lasim

package-lock.json

@@ -3,61 +3,43 @@ import fs from 'fs';
 import path from 'path';
 
 interface DbSelection {
-  type: 'sqlite' | 'postgres';
-  dbPath?: string; // For sqlite
-  connectionString?: string; // For postgres
+  type: 'sqlite';
+  dbPath: string;
 }
 
 // Function to read config (simplified, synchronous for CLI tool)
 function getDbSelectionConfig(): DbSelection | null {
-  // Assumes drizzle.config.ts is in services/backend/
-  const configPath = path.resolve(__dirname, './data/db.selection.json'); 
+  // Updated path to match the actual location used by the application
+  const configPath = path.resolve(__dirname, './persistent_data/db.selection.json'); 
   try {
     if (fs.existsSync(configPath)) {
       const raw = fs.readFileSync(configPath, 'utf-8');
       return JSON.parse(raw) as DbSelection;
     }
-    console.log("db.selection.json not found, defaulting to SQLite for drizzle-kit.");
+    console.log("db.selection.json not found, using default SQLite configuration for drizzle-kit.");
   } catch (e) { 
-    console.error("Error reading db.selection.json for drizzle-kit, defaulting to SQLite:", e); 
+    console.error("Error reading db.selection.json for drizzle-kit, using default SQLite configuration:", e); 
   }
   return null; // Default to SQLite if no config or error
 }
 
 const dbSelection = getDbSelectionConfig();
 
-let drizzleKitConfig: Config;
+// Default SQLite configuration
+const sqliteDbPath = (dbSelection?.dbPath) 
+  ? dbSelection.dbPath 
+  : 'persistent_data/database/deploystack.db'; // Default SQLite path
 
-if (dbSelection && dbSelection.type === 'postgres' && dbSelection.connectionString) {
-  console.log("[INFO] drizzle.config.ts: Using PostgreSQL dialect for drizzle-kit.");
-  drizzleKitConfig = {
-    dialect: "postgresql",
-    schema: "./src/db/schema.pg.ts", // Point to PG-specific schema for drizzle-kit
-    out: "./drizzle/migrations_pg", // PostgreSQL specific migrations
-    dbCredentials: {
-      url: dbSelection.connectionString, // drizzle-kit uses 'url' for PG connection string
-    },
-  };
-} else {
-  // Default to SQLite if no config, error, or SQLite selected
-  const sqliteDbPath = (dbSelection?.type === 'sqlite' && dbSelection.dbPath) 
-    ? dbSelection.dbPath 
-    : './data/deploystack.db'; // Default SQLite path
+console.log(`[INFO] drizzle.config.ts: Using SQLite dialect for drizzle-kit. DB path: ${sqliteDbPath}`);
 
-  // Ensure the path used by drizzle-kit for SQLite is relative to `services/backend`
-  // If dbPath from config is like "data/deploystack.db", it's already correct.
-  // If it's absolute, drizzle-kit might handle it, but relative is safer.
-  // For SQLite, `url` should be the file path.
-  console.log(`[INFO] drizzle.config.ts: Using SQLite dialect for drizzle-kit. DB path: ${sqliteDbPath}`);
-  drizzleKitConfig = {
-    dialect: "sqlite",
-    schema: "./src/db/schema.sqlite.ts", // Point to SQLite-specific schema for drizzle-kit
-    out: "./drizzle/migrations_sqlite", // SQLite specific migrations
-    dbCredentials: {
-      url: path.isAbsolute(sqliteDbPath) ? sqliteDbPath : path.resolve(__dirname, sqliteDbPath),
-    },
-  };
-}
+const drizzleKitConfig: Config = {
+  dialect: "sqlite",
+  schema: "./src/db/schema.sqlite.ts", // Point to SQLite-specific schema for drizzle-kit
+  out: "./drizzle/migrations_sqlite", // SQLite specific migrations
+  dbCredentials: {
+    url: path.isAbsolute(sqliteDbPath) ? sqliteDbPath : path.resolve(__dirname, sqliteDbPath),
+  },
+};
 
 export default defineConfig({
   ...drizzleKitConfig,