feat: add theme provider and control components for light/dark mode

- Implemented ThemeProvider to manage theme state and preferences.
- Added ThemeControl component for users to switch between system, light, and dark themes.
- Integrated localStorage for theme preference persistence.
- Updated document styles based on theme changes.

test: add tests for permanent deletion of habits and related records

- Created tests to ensure permanent deletion of habits removes all dependent records.
- Verified that deletion requires ownership, authentication, and checks for archived habits.
- Added tests to confirm rollback behavior on deletion failures.

test: add tests for habit palette and progress card functionality

- Implemented tests for habit color progression and theme-based color shading.
- Added tests for progress card calculations and calendar display logic.

feat: define theme types and preferences

- Introduced Theme and ThemePreference types for better type safety.
- Created utility functions for resolving theme based on user preference and system settings.
- Defined theme palettes for light and dark modes to ensure adequate contrast.

src/sharing/routes.ts

@@ -148,8 +148,8 @@ export function createSharingRoutes(db: AppDatabase, auth: ReturnType<typeof cre
       return c.json({ error: `Sharing limit reached. Try again in ${retryAfter} seconds.` }, 429);
     }
     const attachment = new FormData();
-    attachment.set("payload_json", JSON.stringify({ allowed_mentions: { parse: [] }, nonce: createHash("sha256").update(`${userId}:${id.data}`).digest("hex").slice(0, 24), enforce_nonce: true, attachments: [{ id: 0, filename: "minabot-progress.png", description: "Progress card shared from minabot" }] }));
-    attachment.set("files[0]", image, "minabot-progress.png");
+    attachment.set("payload_json", JSON.stringify({ allowed_mentions: { parse: [] }, nonce: createHash("sha256").update(`${userId}:${id.data}`).digest("hex").slice(0, 24), enforce_nonce: true, attachments: [{ id: 0, filename: "mina-habits-progress.png", description: "Progress card shared from Mina Habits" }] }));
+    attachment.set("files[0]", image, "mina-habits-progress.png");
     let response: Response;
     try { response = await request(`${channelEndpoint}/messages`, { method: "POST", headers, body: attachment, redirect: "error", signal: AbortSignal.timeout(15000) }); }
     catch { return c.json({ status: "uncertain" }); }