upload: 100MB cap — 4k masters run 30-60MB and belong in the library

Co-authored-by: Hanzo AI <ai@hanzo.ai>

middleware/studio_home.py

@@ -688,7 +688,7 @@ async def _wallet(request: web.Request, org: str) -> dict:
     return out
 
 
-_MAX_UPLOAD = 30 * 1024 * 1024        # 30 MB — a sane ceiling for one render
+_MAX_UPLOAD = 100 * 1024 * 1024       # 100 MB — 4k masters run 30-60MB; the cap must hold the largest real render
 _UPLOAD_EXT = (".png", ".jpg", ".jpeg", ".webp")
 _SUBPATH_RE = re.compile(r"[A-Za-z0-9_-]+(?:/[A-Za-z0-9_-]+)*")
 

web/src/api.ts

@@ -18,7 +18,17 @@ const AGENT_API = (import.meta.env.VITE_AGENT_API ?? '').replace(/\/$/, '')
 
 async function j<T>(url: string, init?: RequestInit): Promise<T> {
   const r = await fetch(url, { credentials: 'include', ...init })
-  if (!r.ok) throw new Error(`${url} -> ${r.status}`)
+  if (!r.ok) {
+    // Surface the server's own message — a 402 says "add credits at
+    // pay.hanzo.ai", which beats a bare status code.
+    let msg = `${url} -> ${r.status}`
+    try {
+      const b = await r.json()
+      const m = b?.error?.message ?? b?.error ?? b?.message
+      if (typeof m === 'string' && m) msg = m
+    } catch { /* keep the status line */ }
+    throw new Error(msg)
+  }
   return r.json() as Promise<T>
 }