feat: monta app final (main.py) e Docker end-to-end

app/main.py

@@ -0,0 +1,21 @@
+"""
+Painel de Clientes — monta os routers de CLIENTE, CLIENTE_CONTATO e o
+gerador de chave manual. Ver docs/superpowers/specs/2026-08-13-painel-clientes-web-design.md.
+"""
+from fastapi import Depends, FastAPI
+from fastapi.responses import RedirectResponse
+from fastapi.staticfiles import StaticFiles
+
+from .auth import exigir_login
+from .routers import chave_manual, clientes, contatos
+
+app = FastAPI(title="Painel de Clientes")
+app.mount("/static", StaticFiles(directory="app/static"), name="static")
+app.include_router(clientes.router)
+app.include_router(contatos.router)
+app.include_router(chave_manual.router)
+
+
+@app.get("/")
+def raiz(usuario: str = Depends(exigir_login)):
+    return RedirectResponse(url="/clientes")