feat: add widget providers (weather, media, pomodoro)

- Weather widget with Open-Meteo/wttr.in/OpenWeatherMap API support
- 15-minute weather caching with geocoding for city names
- MPRIS media player widget with play/pause toggle via dbus-send
- Pomodoro timer widget with configurable work/break cycles
- Widgets display at top of results with emoji icons
- Improved terminal detection for Hyprland/Sway environments
- Updated gtk4 to 0.10, gtk4-layer-shell to 0.7

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Cargo.toml

@@ -12,10 +12,10 @@ categories = ["gui"]
 
 [dependencies]
 # GTK4 for the UI
-gtk4 = { version = "0.9", features = ["v4_12"] }
+gtk4 = { version = "0.10", features = ["v4_12"] }
 
 # Layer shell support for Wayland overlay behavior
-gtk4-layer-shell = "0.4"
+gtk4-layer-shell = "0.7"
 
 # Async runtime for non-blocking operations
 tokio = { version = "1", features = ["rt", "sync", "process", "fs"] }
@@ -55,6 +55,12 @@ serde_json = "1"
 # Date/time for frecency calculations
 chrono = { version = "0.4", features = ["serde"] }
 
+# D-Bus for MPRIS media player integration
+zbus = { version = "4", default-features = false, features = ["tokio"] }
+
+# HTTP client for weather API
+reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "json", "blocking"] }
+
 [features]
 default = []
 # Enable verbose debug logging (for development/testing builds)