Fix missing render_runtime in edit_decisions fixtures

[Satvik-Singh-22]

Summary

Fixes #69 by adding the missing render_runtime field to edit_decisions fixtures.

The edit_decisions schema requires:

"required": ["version", "cuts", "render_runtime"]

but the QA fixtures omitted render_runtime, causing pytest collection to fail with:

CheckpointValidationError:
Artifact 'edit_decisions' failed schema validation:
'render_runtime' is a required property

Changes

• Added "render_runtime": "ffmpeg" to tests/qa/test_08_end_to_end.py
• Added required version and render_runtime fields to edit_decisions payloads in tests/qa/test_05_video_compose.py

Verification

Before:

python -m pytest --collect-only tests/qa/test_08_end_to_end.py

Result:

CheckpointValidationError:
Artifact 'edit_decisions' failed schema validation:
'render_runtime' is a required property

After:

python -m pytest --collect-only tests/qa/test_08_end_to_end.py

Result:

collected 0 items
no tests collected

Collection completes successfully without schema validation errors.