---
id: PLN-0100
ticket: real-render-worker-establishment
title: Migrate Local Render Publication to RenderSubmissionSink
status: done
created: 2026-06-06
completed:
ref_decisions: [DEC-0032]
tags: [runtime, renderer, platform]
---

## Objective

Move local render publication call sites from `HardwareBridge::publish_render_submission` to `RenderSubmissionSink`.

## Background

The sink must become the publication boundary before a real worker can replace the local path. Runtime, firmware, and Hub currently publish through the monolithic bridge.

## Scope

### Included

- Runtime local render surface uses `RenderSubmissionSink`.
- Firmware splash/crash publication uses the sink.
- Hub Shell UI publication uses the sink or a temporary adapter.

### Excluded

- Do not remove `HardwareBridge`.
- Do not migrate non-render domains.
- Do not change command buffering semantics yet.

## Execution Steps

### Step 1 - Adapt runtime tick publication

**What:** Replace `HardwareRenderSurface` dependency on `HardwareBridge::publish_render_submission`.
**How:** Route submission through `RenderSubmissionSink`.
**File(s):** `crates/console/prometeu-system/src/services/vm_runtime/tick.rs`.

### Step 2 - Adapt firmware and Hub publication

**What:** Stop direct calls to `hw.publish_render_submission`.
**How:** Use the sink through explicit platform/render facade access or temporary adapter.
**File(s):** `crates/console/prometeu-firmware/src/firmware_step_splash_screen.rs`, `crates/console/prometeu-firmware/src/firmware_step_crash_screen.rs`, `crates/console/prometeu-system/src/programs/prometeu_hub/prometeu_hub.rs`.

### Step 3 - Update tests

**What:** Adjust tests that call `HardwareBridge::publish_render_submission`.
**How:** Use `RenderSubmissionSink` where render publication is the target.
**File(s):** `crates/console/prometeu-system/src/services/vm_runtime/tests.rs`, driver tests.

## Test Requirements

### Unit Tests

- Existing render manager tests pass.

### Integration Tests

- `cargo test -p prometeu-system -p prometeu-firmware -p prometeu-drivers`.

### Manual Verification

- `rg "publish_render_submission" crates/console` shows only legacy implementation or intentionally unmigrated scaffold.

## Acceptance Criteria

- [ ] Runtime publication uses `RenderSubmissionSink`.
- [ ] Firmware/Hub publication no longer depend directly on the monolithic bridge.
- [ ] Tests pass.

## Dependencies

- `PLN-0099`.

## Risks

- Firmware code may need a small context shape change. Keep compatibility adapters temporary and explicit.