Slow Save Profiler workflow polish
This patch release completes the save-capture interface introduced in 2.1.0.
- Replaces the detached select and placeholder-like instruction cards with explicit manual-save and autosave controls.
- Adds clear ready and armed states with task-specific guidance and an accessible three-step sequence.
- Improves desktop and responsive layout, keyboard focus, supporting-text contrast, and content-safety messaging.
- Preserves the one-request capture behavior and all existing profiling safeguards.
Verification
- PHP lint passed for every plugin PHP file.
- All 11 automated tests pass.
- Ready, armed, and cancelled states were verified in the local WordPress admin UI.
- The UI quality detector reports no issues.