feat(2.0): Phase 6a — Modell-Install (Download-Jobs + Split + UI)

jobengine portiert (Live-Log + %-Fortschritt aus .incomplete), services/hf.py
(resolve_gguf inkl. Split -of-, Groessen), POST /api/models/install (hf
download als Job + sofortige Registrierung, Split-fest), GET /api/jobs +
cancel. huggingface_hub in requirements. Frontend: Install-Buttons auf
Discover-Karten + Live-Download-Fortschrittsbalken (JobsBar).

Verifiziert: resolve_gguf gegen echte Repos (Qwen3.6-35B-A3B 23GB single,
Qwen3.5-122B-A10B 77GB 3-part split) + Frontend-Build.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/lib/api.ts

@@ -138,6 +138,17 @@ export interface AgentStatus {
   has_memories: boolean
 }
 
+export interface Job {
+  id: string
+  label: string
+  state: "queued" | "running" | "done" | "failed" | "canceled"
+  progress?: number
+  total_bytes?: number
+  done_bytes?: number
+  rate_bps?: number
+  eta_s?: number
+}
+
 export interface Health {
   status: string
   version: string