chore(e2e): review screenshots for #2399

[copse-release-bot]

Screenshot candidates rendered for parent PR
#2399 at
7ff20f2fd7028bd69f3bfbe6ef3dbc60986d5757 by
CI run 34007576288.

Review GitHub's image diffs, then merge this PR (or enable auto-merge) to apply the
accepted references to codex/external-hook-registration. This branch contains
only PNG candidates from the immutable
reference-screenshot-candidates-34007576288 artifact and never targets main.

If the parent branch has advanced beyond the source SHA above, do not merge this PR;
the successful CI run for the new head will replace it.

[github-actions]

🖥️ PR preview

• Marketing site
• Browser demo
  Interactive, with a mocked backend — jump to a scenario:
• Builds a cupcake site
• Agent-proposed edits open the Changes panel
• Markdown list indentation
• Responsive composer footer
• Subagent display visual reference
• Subagent stays ungrouped beside reading tools
• Semantic search subagent markdown
• Light-theme approval with a bright accent
• Grouped outside-sandbox command approval
• Remote desktop discovered-port list with one selected
• Settings scroll + sticky footer geometry
• Per-model reasoning / temperature / top-p
• Thread switch hydration notice
• Thread switch hydration failure
• Chat layout styling
  _{Static demo of the renderer against a mock API — the browser pane, terminal, and all main-process IPC are stubbed, so it never proves main-process behaviour. Rebuilt whenever a push changes the demo bundle; these links go live once the queued deploy lands, shortly after this comment. Removed when the PR closes.}

[jonathanKingston]

Closing: these candidates predate #2398, which pinned every reference capture at a 2x device-pixel ratio. All 7 PNGs here were rendered at 1x (mcp-tool-labels.png is 1200x800; main's is 2400x1600), so merging this would push 1x baselines back onto codex/external-hook-registration and undo the normalization on main.

Parent #2399 has been rebased onto current main, so its head has moved past the 7ff20f2fd702 this branch is pinned to. CI on the new head re-renders the references at the pinned 2x and publishes a fresh review PR.

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