feat: homelab deployment - NPM + IONOS DNS + monitoring + NAS backup

- Restructured docker-compose for Nginx Proxy Manager (no custom nginx)
- Added domain wordly.art configuration
- Added Prometheus + Grafana monitoring stack with pre-configured dashboards
- Added PostgreSQL backup script to NAS (daily/weekly/monthly rotation)
- Added alert rules for backend, system, and Docker metrics
- Updated deployment guide for NPM + IONOS DNS homelab setup
- Added marketing plan document
- PDF translator and watermark support
- Enhanced middleware, routes, and translator modules

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

routes/legacy_routes.py

@@ -7,13 +7,14 @@ Story 3.5: API Versioning
 import logging
 import os
 from pathlib import Path
-from typing import Optional
+from typing import Optional, Any
 
-from fastapi import APIRouter, File, Form, UploadFile, HTTPException, Request
+from fastapi import APIRouter, File, Form, UploadFile, HTTPException, Request, Depends
 from fastapi.responses import FileResponse, JSONResponse
 
 from config import config
 from utils import file_handler
+from middleware.api_key_auth import get_authenticated_user
 
 logger = logging.getLogger(__name__)
 
@@ -249,6 +250,7 @@ async def translate_batch_documents(
     ),
     target_language: str = Form(..., description="Target language code"),
     source_language: str = Form(default="auto", description="Source language code"),
+    current_user: Optional[Any] = Depends(get_authenticated_user),
 ):
     """Translate multiple documents in batch"""
     from translators import excel_translator, word_translator, pptx_translator
@@ -354,6 +356,7 @@ async def cleanup_translated_file(filename: str):
 @router.post("/extract-texts")
 async def extract_texts_from_document(
     file: UploadFile = File(..., description="Document file to extract texts from"),
+    current_user: Optional[Any] = Depends(get_authenticated_user),
 ):
     """Extract all translatable texts from a document for client-side translation"""
     import uuid
@@ -470,7 +473,7 @@ async def reconstruct_document(
     translations: str = Form(
         ..., description="JSON array of {id, translated_text} objects"
     ),
-    target_language: str = Form(..., description="Target language code"),
+    current_user: Optional[Any] = Depends(get_authenticated_user),
 ):
     """Reconstruct a document with translated texts. session_id must be a valid UUID."""
     import json
@@ -625,7 +628,9 @@ async def configure_ollama(base_url: str = Form(...), model: str = Form(...)):
 
 
 @router.get("/metrics")
-async def get_metrics():
+async def get_metrics(
+    current_user: Optional[Any] = Depends(get_authenticated_user),
+):
     """Get system metrics and statistics for monitoring"""
     from middleware.cleanup import create_cleanup_manager
     from middleware.rate_limiting import RateLimitManager, RateLimitConfig