feat: add live Discord sharing functionality with dynamic habit progress images

- Implemented live card image generation for user habits using canvas.
- Created API endpoints for starting and managing live Discord sharing sessions.
- Added tests for live Discord sharing to ensure functionality and reliability.
- Introduced CSS styles for the live Discord sharing interface.
- Enhanced error handling and state management for Discord message updates.

build.ts

@@ -1,5 +1,5 @@
 import tailwind from "bun-plugin-tailwind";
-import { rm } from "node:fs/promises";
+import { rm, mkdir, copyFile } from "node:fs/promises";
 import path from "node:path";
 
 const outdir = path.join(process.cwd(), "dist");
@@ -11,6 +11,7 @@ const result = await Bun.build({
   plugins: [tailwind],
   minify: true,
   target: "bun",
+  external: ["@napi-rs/canvas"],
   sourcemap: "linked",
   define: {
     "process.env.NODE_ENV": JSON.stringify("production"),
@@ -24,3 +25,6 @@ if (!result.success) {
 for (const output of result.outputs) {
   console.log(` ${path.relative(process.cwd(), output.path)}  ${(output.size / 1024).toFixed(1)} KB`);
 }
+
+await mkdir(path.join(outdir, "fonts"), { recursive: true });
+await copyFile("src/assets/fonts/InstrumentSerif-Regular.ttf", path.join(outdir, "fonts/InstrumentSerif-Regular.ttf"));