feat: add CapRover deployment files and env var validation

Dockerfile

@@ -0,0 +1,16 @@
+# Use official Bun image for optimal performance
+FROM oven/bun:1.1 as base
+WORKDIR /app
+
+# Install dependencies first (better layer caching)
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile
+
+# Copy all source files
+COPY . .
+
+# Server runs on port 3007 by default (override with PORT env var)
+EXPOSE 3007
+
+# Start the server (env vars will be injected by CapRover)
+CMD ["bun", "run", "index.ts"]

captain-definition

@@ -0,0 +1,4 @@
+{
+  "schemaVersion": 2,
+  "dockerfilePath": "./Dockerfile"
+}