Intrepid/prometeu-runtime
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prometeu-runtime/discussion/workflow/plans/PLN-0105-migrate-firmware-and-hub-to-platform-services.md

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id ticket title status created completed ref_decisions tags
PLN-0105 real-render-worker-establishment Migrate Firmware and Hub to Platform Services done 2026-06-06
DEC-0032
firmware
hub
platform
render

Objective

Move firmware screens and Hub UI away from HardwareBridge and onto explicit platform services.

Background

Firmware splash/crash and Hub currently receive &mut dyn HardwareBridge and publish Shell UI directly through it. DEC-0032 requires migration to platform facades.

Scope

Included

  • Firmware context uses platform services.
  • Splash/crash screens publish via render sink.
  • Hub input/render uses input/render facades.

Excluded

  • Do not implement worker.
  • Do not change Hub UX or firmware state machine semantics.

Execution Steps

Step 1 - Update firmware context

What: Replace PrometeuContext hardware bridge field with platform services. How: Expose only the services firmware needs: input, assets, render sink. File(s): crates/console/prometeu-firmware/src/firmware/prometeu_context.rs, firmware.rs.

Step 2 - Migrate firmware screens

What: Splash and crash screens publish through RenderSubmissionSink. How: Build Shell UI packet and submit owned submission. File(s): crates/console/prometeu-firmware/src/firmware_step_splash_screen.rs, firmware_step_crash_screen.rs.

Step 3 - Migrate Hub

What: Hub uses platform input/render services instead of HardwareBridge. How: Replace activation input and render publication dependencies. File(s): crates/console/prometeu-system/src/programs/prometeu_hub/prometeu_hub.rs.

Test Requirements

Unit Tests

  • Firmware state tests pass.
  • Hub UI tests pass.

Integration Tests

  • cargo test -p prometeu-firmware -p prometeu-system.

Manual Verification

  • Firmware/Hub no longer call publish_render_submission on HardwareBridge.

Acceptance Criteria

  • Firmware context no longer exposes the monolithic bridge.
  • Splash/crash/Hub render via render sink.
  • Hub input uses platform/input facade.

Dependencies

  • PLN-0103.
  • PLN-0104.

Risks

  • Firmware code is lifecycle-sensitive. Keep behavior changes out of scope.