tests: coverage round 4 (footage, IPC, input immediate, project/factory)
- footage_test: static describe/loop-mode helpers, stream mapping,
Value() job generation incl. proxy attachment, data roles, reprobe
via seeded metadata cache
- render_workerpool_ipc_test: SharedMemoryRegion, FrameSlotPool
cross-mapping handoff, IpcMessage NDJSON round trips, RenderWorkerPool
rejection paths
- node_inputimmediate_test: NodeInputImmediate raw API, SetValueAtTime,
interpolation (linear/hold/bezier) for float/vec/color/rational
- project_factory_test: Project settings/cache modes/save-load/signals,
NodeFactory creation and menus
Also fixes Project::cache_path() returning the default cache instead of
a configured custom cache path (inverted branch, found by the tests)
Mike-Solar
7e55bd049b
