faster queue: 55s GPU reservation for 81-frame 3s clips

restore 81 frames with 75s GPU budget for a 3s chunk

fix: 35s GPU / 48 frames so leftover quota accounts can still render

fix: render 81 frames in 90s GPU budget so ZeroGPU can finish

Fix image/video dict argument handling and delete_cache bug

Optimize to 81 frames (3.3s) and duration=45 for ultra fast render

Fix ZeroGPU watchdog abort by executing in-process with runpy and duration=120

Increase ZeroGPU duration limit to 75s to prevent GPU task aborted

Set duration=35s (requests only 52.5s quota, fits under 56s)

Set duration=45s to double token efficiency (1 token = 2 chunks)

Sweet spot duration=80s for zero-a10g

Optimize GPU duration to 60s to fit all free ZeroGPU tokens

Fix @spaces.GPU decorator to duration=90

Set GPU duration to 120s

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