feat: add Home page with user dashboard and habit tracking features

- Implemented Home component with user authentication and loading states.
- Created Welcome component for unauthenticated users with a sign-in option.
- Developed Dashboard component to display user's habits and progress.
- Added functionality for habit management, including adding, updating, and deleting habits.
- Integrated HabitChart and HabitHistory components for visual representation of habits.
- Introduced sharing functionality for progress via Discord integration.

feat: establish Discord sharing configuration and routes

- Added DiscordSharingConfig type and readDiscordSharingConfig function for environment variable management.
- Created sharing contracts for input validation and data structure.
- Implemented sharing routes for previewing and sending progress images to Discord.
- Added tests for sharing routes to ensure authentication and proper error handling.

src/api.ts

@@ -5,8 +5,10 @@ import { sql } from "drizzle-orm";
 import { createAuth, type AppDatabase, type AuthEnv } from "./auth";
 import type { AuthConfig } from "./auth/config";
 import type { FetchDiscord } from "./auth/discord";
+import { createSharingRoutes, type DiscordFetch } from "./sharing/routes";
+import type { DiscordSharingConfig } from "./sharing/config";
 
-export function createApi(db: AppDatabase, config: AuthConfig, request?: FetchDiscord, now?: () => number) {
+export function createApi(db: AppDatabase, config: AuthConfig, request?: FetchDiscord, now?: () => number, discordRequest?: DiscordFetch, sharingConfig: DiscordSharingConfig = { token: "", channelId: "" }) {
   const app = new Hono<AuthEnv>();
   const auth = createAuth(db, config, request, now);
   app.get("/api/health", c => {
@@ -16,6 +18,7 @@ export function createApi(db: AppDatabase, config: AuthConfig, request?: FetchDi
   app.route("/api/auth", auth.routes);
   app.get("/api/me", auth.requireAuth, c => c.json(c.get("user")));
   app.route("/api", createHabitRoutes(db, auth, now ?? Date.now));
+  app.route("/api/sharing", createSharingRoutes(db, auth, sharingConfig, now ?? Date.now, discordRequest));
   app.notFound(c => c.json({ error: "Not found" }, 404));
   app.onError((_error, c) => {
     c.header("Cache-Control", "no-store");