feat: tooltips, two-column timer, font selector, tray behavior, icons, readme

- Custom tooltip directive (WCAG AAA) on every button in the app
- Two-column timer layout with sticky hero and recent entries sidebar
- Timer font selector with 16 monospace Google Fonts and live preview
- UI font selector with 15+ Google Fonts
- Close-to-tray and minimize-to-tray settings
- New app icons (no-glow variants), platform icon set
- Mini timer pop-out window
- Favorites strip with drag-reorder and inline actions
- Comprehensive README with feature documentation
- Remove tracked files that belong in gitignore

src-tauri/Cargo.lock

@@ -2100,28 +2100,6 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6373607a59f0be73a39b6fe456b8192fcc3585f602af20751600e974dd455e77"
 
-[[package]]
-name = "local-time-tracker"
-version = "1.0.0"
-dependencies = [
- "chrono",
- "env_logger",
- "log",
- "png",
- "rusqlite",
- "serde",
- "serde_json",
- "tauri",
- "tauri-build",
- "tauri-plugin-dialog",
- "tauri-plugin-fs",
- "tauri-plugin-global-shortcut",
- "tauri-plugin-notification",
- "tauri-plugin-shell",
- "tauri-plugin-window-state",
- "windows 0.58.0",
-]
-
 [[package]]
 name = "lock_api"
 version = "0.4.14"
@@ -5763,6 +5741,28 @@ dependencies = [
  "zvariant",
 ]
 
+[[package]]
+name = "zeroclock"
+version = "1.0.0"
+dependencies = [
+ "chrono",
+ "env_logger",
+ "log",
+ "png",
+ "rusqlite",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-build",
+ "tauri-plugin-dialog",
+ "tauri-plugin-fs",
+ "tauri-plugin-global-shortcut",
+ "tauri-plugin-notification",
+ "tauri-plugin-shell",
+ "tauri-plugin-window-state",
+ "windows 0.58.0",
+]
+
 [[package]]
 name = "zerocopy"
 version = "0.8.39"