89 lines
3.5 KiB
Markdown
89 lines
3.5 KiB
Markdown
---
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id: PLN-0065
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ticket: prometeu-hub-ui-direction
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title: Pixel Operator Font Integration
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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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Integrate the already-available Pixel Operator font asset into the first Hub UI slice when the existing rendering path can support it without creating a new public font system.
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Source decision: `DEC-0028`.
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## Objective
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Use pixel-style typography for the Hub/Home and fake Shell app labels while keeping font work scoped to the initial UI slice.
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## Dependencies
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- `DEC-0028` must remain accepted.
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- `PLN-0064` can proceed without this plan if font integration exposes unrelated architecture work.
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- The asset is expected to exist already under `assets/pixel_operator` or from `assets/pixel_operator.zip`.
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## Scope
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- Locate and verify the extracted Pixel Operator asset.
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- Determine the current text rendering path available to Hub/System UI.
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- Add a local font binding or asset loading path if one already fits the runtime.
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- Use the font for Hub button labels and simple Shell app text.
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- Document any reason this must be deferred.
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## Non-Goals
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- No general font manager unless one already exists and only needs registration.
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- No text layout engine.
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- No multilingual shaping.
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- No public asset/font spec change unless implementation requires a durable contract.
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- No dependency download.
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## Execution Method
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1. Verify the asset.
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- What changes: confirm exact files and format under `assets/pixel_operator`.
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- How: inspect asset directory and identify usable font/bitmap files.
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- Files: `assets/pixel_operator*`.
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2. Inspect current text rendering.
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- What changes: determine whether Hub can draw text through existing HAL/GFX primitives or asset-backed glyph rendering.
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- How: search current text/glyph/font rendering APIs and examples.
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- Files: `crates/console/prometeu-hal`, `crates/console/prometeu-system`, current asset/glyph code.
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3. Add the narrowest local integration.
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- What changes: make Hub text use Pixel Operator if the path is straightforward.
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- How: register/load the asset in the same style as existing assets; keep code local to Hub UI if there is no general font contract.
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- Files: Hub module and asset-loading modules identified in step 2.
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4. Add fallback behavior.
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- What changes: if font rendering is not currently suitable, keep the visual slice working with existing text/primitive rendering and record a follow-up.
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- How: do not block `PLN-0064` on broad font architecture.
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- Files: Hub module and this plan's execution notes.
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5. Validate typography use.
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- What changes: button labels and simple Shell app labels render legibly in 270p.
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- How: manual visual verification plus any available render tests.
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- Files: Hub render path.
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## Acceptance Criteria
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- [ ] Pixel Operator asset location and format are verified.
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- [ ] Hub text rendering uses Pixel Operator when the existing rendering path supports it.
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- [ ] If deferred, the reason is recorded and `PLN-0064` remains executable.
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- [ ] No broad font/text toolkit is introduced.
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- [ ] Text remains legible at 270p.
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## Tests
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- Compile tests for any asset/font binding.
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- Unit tests only if new parsing/registration logic is added.
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- Manual visual verification of button labels and Shell labels.
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## Affected Artifacts
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- `assets/pixel_operator*`
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- `crates/console/prometeu-system/src/programs/prometeu_hub/`
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- Existing HAL/GFX/asset modules if they already host font or glyph rendering
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