fix: improve workbench action feedback and workflows

[weidonglang]

Summary

• make runtime health checks show a durable per-runtime health summary and move focus to it
• add durable loading, success, empty, and failure states to project, file association, cleanup, and port workflows
• make generated plans/results discoverable, add safe one-click port plan creation, and clarify cleanup/recycle-bin steps
• guard project previews against path changes and add focused acceptance coverage for workflow feedback

Safety boundaries

• direct port action only creates the existing guarded stop plan; execution still requires the normal plan/token flow
• protected, service-owned, database, and non-listening records remain read-only or ineligible
• runtime ownership and external-runtime restrictions are unchanged

Verification

• npm run build
• npm run acceptance:frontend (278 selectors)
• python scripts/run_feature_acceptance.py --mode static (68 passed, 0 failed, 1 manual)
• python scripts/run_feature_acceptance.py --mode frontend (2 passed, 0 failed)
• python scripts/run_feature_acceptance.py --mode safe (184 passed, 0 failed, 40 safety-skipped, 5 manual)
• python scripts/run_feature_acceptance.py --mode report (254 passed, 0 failed, 40 skipped, 6 manual)
• cargo test (230 passed)
• cargo clippy --all-targets --all-features -- -D warnings
• python scripts/check_repo_hygiene.py
• python scripts/check_safety_wording.py
• git diff --check

No installer or VM lifecycle was run because these changes do not alter the installer, startup, or configuration migration paths.