Raise per-session ZeroGPU budget to 150 s

app.py

@@ -81,7 +81,7 @@ STREAM_WIDTH = 1280
 JPEG_QUALITY = 82
 MAX_BLOCKS_PER_SESSION = 512     # hard cap so a session can't run forever
 SESSION_IDLE_TIMEOUT = 600       # seconds; janitor reaps abandoned sessions
-GPU_DURATION = 90                # seconds per @spaces.GPU allocation
+GPU_DURATION = 150               # seconds per @spaces.GPU allocation (one session)
 
 # ── Real-time pacing configuration ───────────────────────────────────────────
 # The GPU decodes a whole block (12 frames) at once, so all of a block's