Add new API endpoints for media retrieval by country and enhance configuration

- Introduced `/api/tmdb` and `/api/collection/missing-locations` endpoints to the backend for improved media management.
- Added a new `get_media_by_country` function in the collection API to fetch media items based on country codes.
- Updated configuration to allow overriding *arr base URLs via environment variables for better flexibility.
- Enhanced frontend with a new `MissingLocations` component and integrated it into the routing structure.
- Improved the `CollectionMap` component to handle country selection and display media items accordingly.
- Added testing dependencies in `requirements.txt` and updated frontend configuration for testing support.

backend/app/api/tmdb.py

@@ -0,0 +1,71 @@
+"""TMDB API endpoints for searching movies and TV shows"""
+from fastapi import APIRouter, Query, HTTPException
+from typing import Optional
+import httpx
+from app.core.config import settings
+
+router = APIRouter()
+
+TMDB_BASE_URL = "https://api.themoviedb.org/3"
+
+
+@router.get("/search")
+async def search_tmdb(
+    query: str = Query(..., description="Search query"),
+    type: str = Query("movie", description="Type: movie or tv")
+):
+    """
+    Search TMDB for movies or TV shows.
+    Returns a list of results with title, year, and other metadata.
+    """
+    if not settings.tmdb_api_key:
+        raise HTTPException(status_code=503, detail="TMDB API key not configured")
+    
+    if type not in ["movie", "tv"]:
+        raise HTTPException(status_code=400, detail="Type must be 'movie' or 'tv'")
+    
+    try:
+        async with httpx.AsyncClient() as client:
+            response = await client.get(
+                f"{TMDB_BASE_URL}/search/{type}",
+                params={
+                    "api_key": settings.tmdb_api_key,
+                    "query": query,
+                    "language": "en-US",
+                },
+                timeout=10.0
+            )
+            response.raise_for_status()
+            data = response.json()
+            
+            results = []
+            for item in data.get("results", [])[:10]:  # Limit to 10 results
+                result = {
+                    "id": item.get("id"),
+                    "title": item.get("title") or item.get("name"),
+                    "year": None,
+                    "type": type,
+                    "overview": item.get("overview"),
+                    "poster_path": item.get("poster_path"),
+                }
+                
+                # Extract year from release_date or first_air_date
+                date_str = item.get("release_date") or item.get("first_air_date")
+                if date_str:
+                    try:
+                        result["year"] = int(date_str.split("-")[0])
+                    except (ValueError, AttributeError):
+                        pass
+                
+                results.append(result)
+            
+            return {
+                "query": query,
+                "type": type,
+                "results": results
+            }
+    except httpx.HTTPStatusError as e:
+        raise HTTPException(status_code=e.response.status_code, detail=f"TMDB API error: {e.response.text[:200]}")
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to search TMDB: {str(e)}")
+