fix: exclude bot/ from Next.js build and lint

tsconfig.json included **/*.ts but only excluded worker/**, not bot/**.
This caused next build to type-check bot source files whose dependencies
aren't installed in the root node_modules, breaking CI.

- Add bot/** to tsconfig.json exclude array
- Add bot/** and worker/** to eslint globalIgnores

eslint.config.mjs

@@ -15,6 +15,9 @@ const eslintConfig = defineConfig([
     // Non-app scripts and seed — not part of Next.js build
     "scripts/**",
     "prisma/seed.ts",
+    // Separate services with their own build
+    "worker/**",
+    "bot/**",
   ]),
 ]);