chore: rename app from Solitaire Quest to Ferrous Solitaire

Replace all display-name occurrences across web pages, Rust source,
docs, and Cargo metadata. Update localStorage token key from sq_token
to fs_token. Tagline "Klondike Solitaire" retained as genre descriptor.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

solitaire_engine/src/assets/icon_svg.rs

@@ -1,4 +1,4 @@
-//! SVG builder for the Solitaire Quest application icon.
+//! SVG builder for the Ferrous Solitaire application icon.
 //!
 //! Renders the project's signature `▌RS` Terminal mark (the same
 //! cursor-block + monogram pair used on the splash boot-screen and

solitaire_engine/src/lib.rs

@@ -1,4 +1,4 @@
-//! Bevy integration layer for Solitaire Quest.
+//! Bevy integration layer for Ferrous Solitaire.
 
 #[cfg(target_os = "android")]
 pub mod android_clipboard;

solitaire_engine/src/onboarding_plugin.rs

@@ -9,7 +9,7 @@
 //!
 //! Slides:
 //!
-//! 1. **Welcome** — brief introduction to Solitaire Quest.
+//! 1. **Welcome** — brief introduction to Ferrous Solitaire.
 //! 2. **How to play** — drag-and-drop, double-click, and right-click hints.
 //! 3. **Keyboard shortcuts** — a summary pulled from the same canonical list
 //!    used in `HelpScreen`. Accelerators: `Esc` anywhere in the flow skips
@@ -292,10 +292,10 @@ fn spawn_slide(commands: &mut Commands, index: u8, font_res: Option<&FontResourc
 /// Slide 1 — Welcome.
 fn spawn_slide_welcome(commands: &mut Commands, font_res: Option<&FontResource>) {
     spawn_modal(commands, OnboardingScreen, Z_ONBOARDING, |card| {
-        spawn_modal_header(card, "Welcome to Solitaire Quest", font_res);
+        spawn_modal_header(card, "Welcome to Ferrous Solitaire", font_res);
         spawn_modal_body_text(
             card,
-            "Solitaire Quest is a free, offline-first Klondike Solitaire game. \
+            "Ferrous Solitaire is a free, offline-first Klondike Solitaire game. \
              Play classic draw-1 or draw-3 Klondike, earn XP, unlock achievements, \
              and compete on the leaderboard. Your progress is saved locally — \
              optional sync to your own server keeps it in step across all your devices.",

solitaire_engine/src/settings_plugin.rs

@@ -2343,7 +2343,7 @@ fn sync_row(
                             row,
                             SettingsButton::ConnectSync,
                             "Connect",
-                            "Connect to a self-hosted Solitaire Quest sync server.".to_string(),
+                            "Connect to a self-hosted Ferrous Solitaire sync server.".to_string(),
                             button_font,
                         );
                     }
@@ -2920,7 +2920,7 @@ mod tests {
             .expect("Connect button should spawn with a Tooltip when backend is Local");
         assert_eq!(
             connect_tip.as_ref(),
-            "Connect to a self-hosted Solitaire Quest sync server.",
+            "Connect to a self-hosted Ferrous Solitaire sync server.",
             "ConnectSync tooltip must use the canonical microcopy"
         );
     }

solitaire_engine/src/splash_plugin.rs

@@ -2,7 +2,7 @@
 //!
 //! On app start the engine spawns a fullscreen, high-Z overlay that
 //! reads the Terminal-style "boot screen" — an accent-coloured cursor block, the
-//! "Solitaire Quest" wordmark, a short fixture boot log, a progress
+//! "Ferrous Solitaire" wordmark, a short fixture boot log, a progress
 //! bar, and a footer with the design-system palette swatches and the
 //! build version. The overlay fades in over 300 ms, holds for ~1 s,
 //! then fades out for 300 ms before despawning. The deal animation
@@ -383,7 +383,7 @@ fn spawn_header_section(parent: &mut ChildSpawnerCommands, font_handle: &Handle<
             ));
             hdr.spawn((
                 SplashFadable { base_color: TEXT_PRIMARY },
-                Text::new("Solitaire Quest"),
+                Text::new("Ferrous Solitaire"),
                 title_font,
                 TextColor(transparent(TEXT_PRIMARY)),
             ));
@@ -1170,7 +1170,7 @@ mod tests {
             "expected the cursor block (▌) on the splash, got: {texts:?}"
         );
         assert!(
-            texts.iter().any(|t| t == "Solitaire Quest"),
+            texts.iter().any(|t| t == "Ferrous Solitaire"),
             "expected the wordmark on the splash, got: {texts:?}"
         );
         assert!(

solitaire_engine/src/sync_plugin.rs

@@ -1,4 +1,4 @@
-//! Backend-agnostic sync plugin for Solitaire Quest.
+//! Backend-agnostic sync plugin for Ferrous Solitaire.
 //!
 //! On startup, the plugin spawns an async pull task on [`AsyncComputeTaskPool`]
 //! that fetches the remote payload from the active [`SyncProvider`]. Once the

solitaire_engine/src/theme/manifest.rs

@@ -84,7 +84,7 @@ mod tests {
         ThemeMeta {
             id: "default".into(),
             name: "Default".into(),
-            author: "Solitaire Quest".into(),
+            author: "Ferrous Solitaire".into(),
             version: "1.0.0".into(),
             card_aspect: (2, 3),
         }

solitaire_engine/src/theme/mod.rs

@@ -268,7 +268,7 @@ mod tests {
         let meta = ThemeMeta {
             id: "default".into(),
             name: "Default".into(),
-            author: "Solitaire Quest".into(),
+            author: "Ferrous Solitaire".into(),
             version: "1.0.0".into(),
             card_aspect: (2, 3),
         };

solitaire_engine/src/theme/registry.rs

@@ -115,7 +115,7 @@ fn default_entry() -> ThemeEntry {
         meta: ThemeMeta {
             id: "default".to_string(),
             name: "Default".to_string(),
-            author: "Solitaire Quest".to_string(),
+            author: "Ferrous Solitaire".to_string(),
             version: "1.0".to_string(),
             card_aspect: (2, 3),
         },

solitaire_engine/src/ui_focus.rs

@@ -1,6 +1,6 @@
 //! Keyboard focus ring for modal buttons (Phase 1).
 //!
-//! Solitaire Quest's 11 modals (Help, Stats, Achievements, Settings,
+//! Ferrous Solitaire's 11 modals (Help, Stats, Achievements, Settings,
 //! Profile, Leaderboard, Pause, Forfeit confirm, GameOver, Confirm new
 //! game, Onboarding) ship without any keyboard focus support. Phase 1
 //! gives every button spawned via [`crate::ui_modal::spawn_modal_button`]