Add integration testing infrastructure with Podman Compose

- Add docker/podman-compose.yml for Immich server (no ML)
- Add test-data/sample-photos/ with 3 public domain images
- Add scripts/start-immich.sh for container startup + admin/API key creation
- Add scripts/seed-data.sh for uploading test photos and creating albums
- Add scripts/stop-immich.sh for cleanup with volume destruction
- Add scripts/run-example.sh wrapper (fixed env var export)
- Update examples to use IMMICH_URL and IMMICH_API_KEY env vars
- Add .github/workflows/integration-test.yml for CI
- Update assets.list() to use /search/metadata endpoint
- Update AGENTS.md with example running instructions
- Add 5 new examples: search_metadata, album_management, timeline_browsing,
  delete_assets, server_info

examples/upload_photos.rs

@@ -1,15 +1,38 @@
 //! Example: Upload photos to Immich
+//!
+//! This example uses environment variables for configuration:
+//! - IMMICH_URL: The Immich server URL (defaults to http://localhost:2283)
+//! - IMMICH_API_KEY: Your API key (required)
+//!
+//! It also reads photos from test-data/sample-photos/ directory.
 
 use immich_sdk::Client;
-use std::path::Path;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
-    // Create a client
-    let client = Client::from_url("https://immich.example.com")?.with_api_key("your-api-key");
+    // Configure the client from environment variables
+    let url = std::env::var("IMMICH_URL").unwrap_or_else(|_| "http://localhost:2283".to_string());
+    let api_key =
+        std::env::var("IMMICH_API_KEY").expect("IMMICH_API_KEY environment variable not set");
 
-    // Path to the photo
-    let photo_path = Path::new("/path/to/your/photo.jpg");
+    // Create a client
+    let client = Client::from_url(&url)?.with_api_key(api_key);
+
+    // Use test data photos
+    let photo_dir = std::path::Path::new("test-data/sample-photos");
+    let photos: Vec<_> = std::fs::read_dir(photo_dir)?
+        .filter_map(|e| e.ok())
+        .map(|e| e.path())
+        .filter(|p| p.extension().map(|e| e == "jpg").unwrap_or(false))
+        .collect();
+
+    if photos.is_empty() {
+        println!("No photos found in test-data/sample-photos/");
+        return Ok(());
+    }
+
+    // Upload first photo
+    let photo_path = &photos[0];
 
     // Upload the photo
     println!("Uploading: {}", photo_path.display());