refactor: standardize database environment variables to POSTGRES prefix and update gitignore with common development patterns

.gitignore

@@ -1,2 +1,19 @@
 .env
 node_modules
+**/dist/
+**/build/
+.npm/
+**.log
+
+**/data/
+**.sqlite
+**.db
+
+**/volumes/
+
+.DS_Store
+Thumbs.db
+.vscode/
+.idea/
+**/tsconfig.tsbuildinfo
+.eslintcache

api/src/storage/postgres.js

@@ -1,10 +1,10 @@
 const { Pool } = require('pg');
 
 const config = {
-    user: process.env.PG_USER,
-    password: process.env.PG_PASSWORD,
-    host: process.env.PG_HOST,
-    port: process.env.PG_PORT,
+    user: process.env.POSTGRES_USER,
+    password: process.env.POSTGRES_PASSWORD,
+    host: process.env.POSTGRES_HOST,
+    port: process.env.POSTGRES_PORT,
     max: 10,
     idleTimeoutMillis: 30000,
     connectionTimeoutMillis: 5000

auth/src/storage/database.js

@@ -1,16 +1,16 @@
 const { Pool } = require('pg');
 
 const config = {
-    user: process.env.DB_USER,
-    password: process.env.DB_PASSWORD,
-    host: process.env.DB_HOST,
-    port: process.env.DB_PORT,
+    user: process.env.POSTGRES_USER,
+    password: process.env.POSTGRES_PASSWORD,
+    host: process.env.POSTGRES_HOST,
+    port: process.env.POSTGRES_PORT,
     max: 10,
     idleTimeoutMillis: 30000,
     connectionTimeoutMillis: 5000
 }
 
-const pool = new Pool({ ...config, database: process.env.DB_NAME });
+const pool = new Pool({ ...config, database: process.env.POSTGRES_NAME });
 
 pool.on('error', (err) => {
     console.error('Error in database', err);

realtime/src/helper/authdb.js

@@ -2,11 +2,11 @@ const { Pool } = require('pg');
 const { hash, generateShortId } = require('./cryptoUtils');
 
 const pool = new Pool({
-    user: process.env.DB_USER,
-    host: process.env.DB_HOST,
-    database: process.env.DB_NAME,
-    password: process.env.DB_PASSWORD,
-    port: process.env.DB_PORT,
+    user: process.env.POSTGRES_USER,
+    host: process.env.POSTGRES_HOST,
+    database: process.env.POSTGRES_NAME,
+    password: process.env.POSTGRES_PASSWORD,
+    port: process.env.POSTGRES_PORT,
 })
 
 async function checkDB() {