Update README to reflect TypeScript source structure and dev workflow

README.md

@@ -6,6 +6,8 @@ Services like Square can deliver webhooks but cannot add custom HTTP headers lik
 
 One proxy serves all projects — routing is driven entirely by environment variables.
 
+Written in **TypeScript** (`src/server.ts`), compiled to plain JS at build time.
+
 ---
 
 ## How it works
@@ -19,7 +21,7 @@ https://app-proxy.bsidesolutions.net/square
    │
    │ Express server resolves:
    │   ROUTE_MAP["/square"] = { apiKeySlot: "square", functionId: "verify_square_webhook" }
-   │   PROJECT_CREDENTIALS["square"] = { project: "staging-crown-x-ms-monet", key: "..." }
+   │   PROJECT_CREDENTIALS["square"] = { project: "staging-crown-x-ms-monet", apiKey: "..." }
    │
    ▼
 POST https://appwrite.bsidesolutions.net/v1/functions/verify_square_webhook/executions
@@ -33,13 +35,19 @@ Appwrite function runs, returns response, proxy returns it to caller.
 
 ## Quick start
 
-### Local
+### Local development
 
 ```bash
 cp .env.example .env
 # edit .env to fill in PROJECT_CREDENTIALS and ROUTE_MAP
 
 npm install
+
+# Run with hot-reload TypeScript directly
+npm run dev
+
+# Or build + run compiled output
+npm run build
 npm start
 ```
 
@@ -48,7 +56,7 @@ npm start
 ```bash
 docker build -t bside-webhook-proxy .
 docker run --rm -p 3012:3012 \
-  -e PROJECT_CREDENTIALS='{"square":{"project":"...","key":"..."}}' \
+  -e PROJECT_CREDENTIALS='{"square":{"project":"...","apiKey":"..."}}' \
   -e ROUTE_MAP='/square=>{"apiKeySlot":"square","functionId":"verify_square_webhook"}' \
   bside-webhook-proxy
 ```
@@ -57,7 +65,7 @@ docker run --rm -p 3012:3012 \
 
 1. In Coolify → **Add New Resource** → **Application** → **Public/Private Repo**
 2. Point at `bside-solutions/bside-webhook-proxy`
-3. Coolify auto-builds the Dockerfile
+3. Coolify auto-builds the Dockerfile (multi-stage build compiles TypeScript)
 4. Set the domain (e.g. `app-proxy.bsidesolutions.net`)
 5. Add environment variables (see [Configuration](#configuration))
 6. Deploy
@@ -161,19 +169,20 @@ No code changes needed.
 
 ---
 
-## Local development
+## Project structure
 
-```bash
-npm install
-npm start
 ```
-
-To test forwarding:
-
-```bash
-curl -X POST 'http://localhost:3012/square' \
-  -H 'Content-Type: application/json' \
-  -d '{"test": true}'
+bside-webhook-proxy/
+├── src/
+│   └── server.ts        # TypeScript source (Express server)
+├── dist/                # Compiled JS output (gitignored)
+├── server.js            # Entry point - requires compiled ./dist/server.js
+├── package.json         # Build + start scripts, deps
+├── tsconfig.json        # TypeScript compiler config
+├── Dockerfile           # Multi-stage build (TypeScript -> JS)
+├── docker-compose.yml   # Example Coolify deploy snippet
+├── .env.example         # Sample env vars
+└── README.md
 ```
 
 ---