docs(release): resolve v0.9 UI acceptance cutline

[Hmbown]

Summary

• resolves the v0.9 acceptance matrix UI/workflow UX decide rows
• records shipped evidence for transcript tool-run collapse, sidebar detail popovers, and PlanArtifact review/handoff
• explicitly defers the opinionated v0.9 first-look/home redesign while preserving the existing onboarding welcome

Verification

• cargo test -p codewhale-tui chat_widget_collapses_dense_tool_runs_by_default --locked
• cargo test -p codewhale-tui chat_widget_expands_dense_tool_runs_on_demand --locked
• cargo test -p codewhale-tui sidebar_hover --locked
• cargo test -p codewhale-tui subagent_hover_text_preserves_full_agent_id_and_progress --locked
• cargo test -p codewhale-tui plan_prompt_renders_rich_plan_artifact_sections --locked
• cargo test -p codewhale-tui plan_update_cell_renders_rich_artifact_metadata --locked
• cargo test -p codewhale-tui first_run_user_always_starts_at_welcome --locked
• git diff --check
• cmp -s CHANGELOG.md crates/tui/CHANGELOG.md
• ./scripts/release/check-versions.sh
• ./scripts/release/check-ohos-deps.sh

Credit

Preserves the already-landed contributor trail for #2692/#2694/#2691/#2713 while making the release cutline explicit.

[greptile-apps]

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[gemini-code-assist]

Code Review

This pull request updates the main and TUI changelogs, as well as the v0.9.0 release acceptance documentation, to document the status of several feature gates (shipping transcript tool-collapse, sidebar detail popovers, and Plan review/handoff artifacts, while deferring the first-look redesign). The review feedback suggests minor grammatical improvements in the changelog entries to enhance readability.

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[gemini-code-assist]

For better grammatical flow, consider adding the definite article 'the' before 'shipped transcript'.

Suggested change

	(#2679). The UI/workflow UX rows now also distinguish shipped transcript
	tool-run collapse, sidebar detail popovers, and PlanArtifact review/handoff
	evidence from the deferred first-look/home redesign (#2692, #2694, #2691,
	#2713).
	(#2679). The UI/workflow UX rows now also distinguish the shipped transcript
	tool-run collapse, sidebar detail popovers, and PlanArtifact review/handoff
	evidence from the deferred first-look/home redesign (#2692, #2694, #2691,
	#2713).

[gemini-code-assist]

For better grammatical flow, consider adding the definite article 'the' before 'shipped transcript'.

Suggested change

	(#2679). The UI/workflow UX rows now also distinguish shipped transcript
	tool-run collapse, sidebar detail popovers, and PlanArtifact review/handoff
	evidence from the deferred first-look/home redesign (#2692, #2694, #2691,
	#2713).
	(#2679). The UI/workflow UX rows now also distinguish the shipped transcript
	tool-run collapse, sidebar detail popovers, and PlanArtifact review/handoff
	evidence from the deferred first-look/home redesign (#2692, #2694, #2691,
	#2713).