97 lines
4.1 KiB
Markdown
97 lines
4.1 KiB
Markdown
---
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id: PLN-0066
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ticket: prometeu-hub-ui-direction
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title: Hub UI Slice Validation and Lesson
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status: open
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created: 2026-05-15
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ref_decisions: [DEC-0028]
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tags: [hub, ui, shell, system-apps, lifecycle, design-system]
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---
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## Briefing
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Validate the completed `DEC-0028` implementation family, collect evidence, and prepare the post-execution lesson required by the repository workflow.
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Source decision: `DEC-0028`.
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## Objective
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Prove that the initial Hub retro Shell UI slice satisfies the accepted decision and leave the discussion workflow ready for housekeeping after implementation.
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## Dependencies
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- `PLN-0062` must be implemented.
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- `PLN-0063` must be implemented or explicitly documented as unnecessary because mouse/click was already available.
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- `PLN-0064` must be implemented.
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- `PLN-0065` must be implemented or explicitly deferred with evidence.
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## Scope
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- Run relevant crate tests.
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- Perform manual desktop verification of the end-to-end flow.
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- Check that no forbidden scope leaked into implementation.
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- Record evidence in plan execution notes or final implementation summary.
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- Draft an English lesson after execution is complete.
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## Non-Goals
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- No new UI implementation work except small fixes required to satisfy acceptance criteria.
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- No new architecture decisions.
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- No lesson before code/spec state is published.
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- No housekeeping until plans are done.
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## Execution Method
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1. Run automated tests.
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- What changes: execute the crates affected by plans `PLN-0062` through `PLN-0065`.
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- How: run targeted cargo tests for firmware/system/host crates.
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- Files: test output only; no source changes unless failures expose implementation bugs.
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2. Verify end-to-end desktop behavior.
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- What changes: manually exercise Hub -> ShellA -> close -> Hub -> ShellB -> close -> Hub.
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- How: run the desktop host or project runner used for Hub boot, click the buttons, and observe lifecycle return.
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- Files: none, unless bugs are found.
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3. Check decision compliance.
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- What changes: inspect implementation against `DEC-0028` invariants.
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- How: verify no toolkit, no catalog, no Tabs/List/Footer, no direct task/process manager mutation from visual components, and task-owned Shell windows.
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- Files: implementation files from the prior plans.
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4. Record validation evidence.
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- What changes: update the relevant plans or implementation summary with commands run, manual checks, failures, and fixes.
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- How: keep evidence concise and tied to acceptance criteria.
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- Files: plan artifacts if the workflow records execution notes there.
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5. Prepare post-execution lesson.
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- What changes: create an English lesson only after implementation is complete and published.
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- How: use `discussion-housekeep` when all plans are done; lesson should explain how to think about Hub visual slices without making lessons normative.
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- Files: `discussion/lessons/DSC-0036-prometeu-hub-ui-direction/...`.
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## Acceptance Criteria
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- [ ] Automated tests for affected crates pass or failures are documented as unrelated.
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- [ ] Manual flow passes: Hub -> ShellA -> close -> Hub.
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- [ ] Manual flow passes: Hub -> ShellB -> close -> Hub.
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- [ ] Shell windows are task-owned.
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- [ ] App close uses lifecycle close.
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- [ ] No complete UI toolkit or catalog was introduced.
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- [ ] Pixel font integration outcome is recorded.
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- [ ] A post-execution lesson is ready for housekeeping after plans are marked done.
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## Tests
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- `cargo test -p prometeu-system`
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- `cargo test -p prometeu-firmware`
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- `cargo test -p prometeu-host-desktop-winit` if host/input code changed
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- Manual desktop host verification
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- `discussion validate` after marking plans and housekeeping artifacts
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## Affected Artifacts
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- Implementation files touched by `PLN-0062` through `PLN-0065`
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- `discussion/workflow/plans/PLN-0062-native-shell-launch-and-lifecycle-wiring.md`
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- `discussion/workflow/plans/PLN-0063-hub-mouse-input-and-click-routing.md`
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- `discussion/workflow/plans/PLN-0064-retro-hub-home-and-fake-shell-ui.md`
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- `discussion/workflow/plans/PLN-0065-pixel-operator-font-integration.md`
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- Future lesson under `discussion/lessons/DSC-0036-prometeu-hub-ui-direction/`
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