fix: resolve geist font path for OG images in monorepo

apps/web/app/api/og/fonts.ts

@@ -0,0 +1,19 @@
+import { readFile } from "fs/promises"
+import { join } from "path"
+
+/**
+ * Loads Geist Mono font files for OG image generation.
+ *
+ * Font files are vendored into `public/fonts/` so they can be read via
+ * `process.cwd()` on Vercel (same pattern used by `public/icon.svg`).
+ *
+ * We can't read from `node_modules/geist/...` because in a monorepo
+ * dependencies are hoisted to the workspace root while `process.cwd()`
+ * points to the app directory (e.g. `apps/web`).
+ */
+const fontsDir = join(process.cwd(), "public", "fonts")
+
+export const geistMonoRegular = readFile(
+  join(fontsDir, "GeistMono-Regular.ttf")
+)
+export const geistMonoBold = readFile(join(fontsDir, "GeistMono-Bold.ttf"))

apps/web/app/api/og/home/route.tsx

@@ -1,24 +1,13 @@
 import { readFile } from "fs/promises"
 import { ImageResponse } from "next/og"
 import { join } from "path"
+import { geistMonoBold, geistMonoRegular } from "@/app/api/og/fonts"
 
 const size = {
   width: 1200,
   height: 630,
 }
 
-const geistMonoRegular = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Regular.ttf"
-  )
-)
-const geistMonoBold = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Bold.ttf"
-  )
-)
 const iconSvg = readFile(join(process.cwd(), "public/icon.svg"), "utf-8")
 
 export async function GET() {

apps/web/app/api/og/post/route.tsx

@@ -1,8 +1,7 @@
 import { and, eq } from "drizzle-orm"
-import { readFile } from "fs/promises"
 import { ImageResponse } from "next/og"
 import type { NextRequest } from "next/server"
-import { join } from "path"
+import { geistMonoBold, geistMonoRegular } from "@/app/api/og/fonts"
 import { getRootCommentText } from "@/lib/data/posts"
 import { db } from "@/lib/db/client"
 import { posts } from "@/lib/db/schema"
@@ -13,19 +12,6 @@ const size = {
   height: 630,
 }
 
-const geistMonoRegular = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Regular.ttf"
-  )
-)
-const geistMonoBold = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Bold.ttf"
-  )
-)
-
 export async function GET(request: NextRequest) {
   const searchParams = request.nextUrl.searchParams
   const owner = searchParams.get("owner")

apps/web/app/api/og/repo/route.tsx

@@ -1,8 +1,7 @@
 import { and, eq, sql } from "drizzle-orm"
-import { readFile } from "fs/promises"
 import { ImageResponse } from "next/og"
 import type { NextRequest } from "next/server"
-import { join } from "path"
+import { geistMonoBold, geistMonoRegular } from "@/app/api/og/fonts"
 import { db } from "@/lib/db/client"
 import { posts } from "@/lib/db/schema"
 import { githubFetch } from "@/lib/github-fetch"
@@ -13,19 +12,6 @@ const size = {
   height: 630,
 }
 
-const geistMonoRegular = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Regular.ttf"
-  )
-)
-const geistMonoBold = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Bold.ttf"
-  )
-)
-
 interface GitHubRepoData {
   description: string | null
   [key: string]: unknown

apps/web/app/api/og/user/route.tsx

@@ -1,8 +1,7 @@
 import { eq, sql } from "drizzle-orm"
-import { readFile } from "fs/promises"
 import { ImageResponse } from "next/og"
 import type { NextRequest } from "next/server"
-import { join } from "path"
+import { geistMonoBold, geistMonoRegular } from "@/app/api/og/fonts"
 import { gitHubUserLoader } from "@/lib/auth"
 import { db } from "@/lib/db/client"
 import { comments } from "@/lib/db/schema"
@@ -13,19 +12,6 @@ const size = {
   height: 630,
 }
 
-const geistMonoRegular = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Regular.ttf"
-  )
-)
-const geistMonoBold = readFile(
-  join(
-    process.cwd(),
-    "node_modules/geist/dist/fonts/geist-mono/GeistMono-Bold.ttf"
-  )
-)
-
 export async function GET(request: NextRequest) {
   const searchParams = request.nextUrl.searchParams
   const username = searchParams.get("username")