Add backend, worker, deploy docker-compose and CI skeleton

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  basic-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Show tree
+        run: find . -maxdepth 3 | sort

backend/app/main.py

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+from fastapi import FastAPI
+
+app = FastAPI(title="NetMapper API", version="0.1.0")
+
+@app.get("/health")
+def health():
+    return {"status": "ok"}
+
+@app.get("/api/v1")
+def root():
+    return {"service": "netmapper-backend", "version": "0.1.0"}

backend/requirements.txt

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+fastapi==0.115.0
+uvicorn[standard]==0.30.6
+pydantic==2.9.2
+sqlalchemy==2.0.35
+psycopg[binary]==3.2.3
+redis==5.1.1

deploy/docker/docker-compose.yml

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+version: "3.9"
+
+services:
+  postgres:
+    image: postgres:16
+    environment:
+      POSTGRES_DB: netmapper
+      POSTGRES_USER: netmapper
+      POSTGRES_PASSWORD: netmapper
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+
+  redis:
+    image: redis:7
+    ports:
+      - "6379:6379"
+
+  backend:
+    image: python:3.12-slim
+    working_dir: /app
+    command: sh -c "pip install -r requirements.txt && uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload"
+    volumes:
+      - ../../backend:/app
+    ports:
+      - "8000:8000"
+    depends_on:
+      - postgres
+      - redis
+
+  worker:
+    image: python:3.12-slim
+    working_dir: /app
+    command: sh -c "pip install -r requirements.txt && python app/main.py"
+    volumes:
+      - ../../worker:/app
+    depends_on:
+      - redis
+      - backend
+
+  frontend:
+    image: node:20-alpine
+    working_dir: /app
+    command: sh -c "npm install && npm run dev -- --host 0.0.0.0 --port 5173"
+    volumes:
+      - ../../frontend:/app
+    ports:
+      - "5173:5173"
+    depends_on:
+      - backend
+
+volumes:
+  postgres_data:

worker/app/main.py

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+def main():
+    print("NetMapper worker bootstrap")
+
+if __name__ == "__main__":
+    main()

worker/requirements.txt

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+redis==5.1.1
+pydantic==2.9.2
+python-nmap==0.7.1
+pysnmp==7.1.15