ENTERPRISE: Implement zero-config SSL/TLS with dual HTTP/HTTPS architecture

Major architectural improvements:
- Auto-generate SSL certificates on first startup with OpenSSL
- Dual HTTP (8081) + HTTPS (8443) backend API servers
- Frontend auto-detects protocol and uses appropriate API endpoint
- Fix database ORM initialization race condition with getDb() pattern
- WebSocket authentication with JWT verification during handshake
- Zero-config .env file generation for production deployment
- Docker and nginx configurations for container deployment

Technical fixes:
- Eliminate module initialization race conditions in database access
- Replace direct db imports with safer getDb() function calls
- Automatic HTTPS frontend development server (npm run dev:https)
- SSL certificate generation with termix.crt/termix.key
- Cross-platform environment variable support with cross-env

This enables seamless HTTP→HTTPS upgrade with zero manual configuration.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

src/backend/ssh/file-manager.ts

@@ -1,7 +1,7 @@
 import express from "express";
 import cors from "cors";
 import { Client as SSHClient } from "ssh2";
-import { db } from "../database/db/index.js";
+import { getDb } from "../database/db/index.js";
 import { sshCredentials } from "../database/db/schema.js";
 import { eq, and } from "drizzle-orm";
 import { fileLogger } from "../utils/logger.js";
@@ -131,7 +131,7 @@ app.post("/ssh/file_manager/ssh/connect", async (req, res) => {
   if (credentialId && hostId && userId) {
     try {
       const credentials = await SimpleDBOps.select(
-        db
+        getDb()
           .select()
           .from(sshCredentials)
           .where(