# HyperTwist Phase 8A browser runtime-ready native-capture implementation packet

Created on `2026-06-19`

## Status

- first-party HyperTwist packet
- bounded first-party `Phase 8A` continuation slice

## Purpose

This packet hardens the already-landed embedded browser shipping lane directly
at the original runtime-ready handshake.

The landed slice is:

- decode first-party `hypertwist-runtime-ready` payloads into typed
  Unreal-owned structs instead of leaving the handshake as raw JSON only
- retain the last valid runtime-ready payload through
  `UHyperTwistBrowserBridgeObject` and `UHyperTwistBrowserWidget`
- preserve the existing flush behavior so the browser-ready event still marks
  the widget ready and flushes queued shell traffic exactly as before
- widen focused browser automation with a dedicated typed runtime-ready decode
  test on the primary reverse-SSH Windows lane

It is not:

- a topology widening into the optional full-browser client branch
- a renderer-port packet
- a rewrite of the existing embedded-browser queue/flush posture

## Current authority basis

This implementation packet stands on:

- `docs/ops/HYPERTWIST_COMPREHENSIVE_RECONSTRUCTION_ROADMAP_2026-06-10.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/ROADMAP.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/FEATURE_REGISTRY.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/ARCHITECTURE.md`
- `docs/arch/HYPERTWIST_PHASE8A_BROWSER_RUNTIME_STATUS_NATIVE_CAPTURE_IMPLEMENTATION_PACKET_2026-06-19.md`

## Landed scope

Current code now hardens the live embedded-browser lane through:

- `UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistBrowser/HyperTwistBrowserBridgeObject.h`
  typed first-party `FHyperTwistBrowserRuntimeReadyPayload` ownership
- `UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistBrowser/HyperTwistBrowserBridgeObject.cpp`
  typed decode and retained caching for the browser runtime-ready payload
- `UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistBrowser/HyperTwistBrowserWidget.h`
  and
  `UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistBrowser/HyperTwistBrowserWidget.cpp`
  widget-level forwarding for the retained typed runtime-ready payload
- focused browser automation in
  `UnrealHyperTwist/Source/UnrealHyperTwist/Tests/HyperTwistBrowserBridgeObjectTest.cpp`
  for the new:
  - `Bridge.RuntimeReadyPayloadDecode`

## Why this hardening mattered

The shipping lane already had a real runtime-ready handshake, but the native
host still treated its payload as an opaque string even after the later
runtime-status ownership seam landed.

That left the initial browser-ready authority handoff weaker than the adjacent
typed ownership surfaces. This packet closes that gap while keeping the
existing startup queue and flush behavior intact.

## Validation

Local validation:

- `git diff --check`
- result on `2026-06-19`: passed

Windows build validation:

- `Build.bat UnrealHyperTwistEditor Win64 Development -Project='C:\HyperTwist_worktrees\phase10validate\UnrealHyperTwist\UnrealHyperTwist.uproject' -WaitMutex -NoHotReloadFromIDE -NoUba`
- result on `2026-06-19`: `Result: Succeeded` with UnrealBuildTool
  `Total execution time: 88.20 seconds` on isolated worktree
  `C:\HyperTwist_worktrees\phase10validate`

Focused browser validation:

- `Automation RunTests HyperTwist.Browser`
- result on `2026-06-19`: found `9` `HyperTwist.Browser.*` tests and passed
  all `9`, exporting the report to
  `Saved\AutomationReports\Browser-RuntimeReadyPayload-Verify`, including the
  new:
  - `Bridge.RuntimeReadyPayloadDecode`

## Product effect

This packet keeps the live embedded browser/CEF shipping lane intact, but it
upgrades the original handshake seam:

- Unreal now retains a typed runtime-ready payload instead of only raw JSON
- the ready-handshake facts can be reused from native code and diagnostics
  without reparsing ad hoc strings
- queue flush behavior remains unchanged while the authority seam underneath it
  becomes more explicit

Follow-on continuation:

- `docs/arch/HYPERTWIST_PHASE8A_BROWSER_NATIVE_OPERATOR_STATUS_SURFACE_IMPLEMENTATION_PACKET_2026-06-19.md`
  now records the next hardening slice that consumes both the typed
  runtime-ready and runtime-status seams from native code and clears stale
  retained runtime ownership on shell-authority change
