feat(vscode): show PR conversation timeline

[marius-kilocode]

What Problem This Solves

The Agent Manager PR panel showed comments and review threads, but not the commits and lifecycle events that explain what happened between them. A fix pushed after a review comment, a force push, an approval without text, or the final merge could be missed without opening GitHub.

Why This Change Was Made

GitHub's PullRequest.timelineItems API already provides the Conversation-style history. The panel now requests that timeline together with the existing review-thread data in the same GraphQL request. It does not add a second timeline request or a separate cache. The timeline query is built once at module load and embedded only in the full, active-worktree request. Non-active worktree polls continue to fetch only the summary data.

User Impact

• The Conversation section now starts with the current PR description.
• Comments, reviews, commits, force pushes, merge events, close events, and reopen events appear in chronological order.
• Bodyless approvals and change requests remain visible as compact timeline rows.
• Consecutive commits by one author collapse into an expandable group.
• Commit SHAs open the commit on GitHub.
• PR summary and Fix with Kilo counts continue to include only actionable comments and reviews.
• PRs with more than the latest 100 timeline items show a link to earlier activity on GitHub.

Evidence

• bun run typecheck
• bun run lint
• bun run knip
• bun run check-kilocode-change
• bun test tests/unit, 5466 passed, 2 skipped, 0 failed
• Live gh api graphql verification against open and merged PRs, including commits, reviews, MergedEvent, and ClosedEvent
• Render fixture coverage for grouped commits, expansion, commit links, lifecycle events, bodyless reviews, the PR description, earlier activity, and existing comment actions

Known limits: the panel requests the latest 100 timeline items. Older activity is currently opened on GitHub, and commit ordering uses the commit timestamp supplied by GitHub.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• packages/kilo-vscode/webview-ui/src/stories/agent-manager.stories.tsx

Previous Review Summaries (3 snapshots, latest commit 93b9fad)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 93b9fad)

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• packages/kilo-vscode/src/agent-manager/AgentManagerProvider.ts
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRPanel.tsx

Previous review (commit 890de4b)

Status: No Issues Found | Recommendation: Merge

Files Reviewed (12 files)

• packages/kilo-vscode/src/agent-manager/PRStatusPoller.ts
• packages/kilo-vscode/src/agent-manager/pr/am-pr-utils.ts
• packages/kilo-vscode/src/agent-manager/pr/timeline.ts
• packages/kilo-vscode/src/agent-manager/types.ts
• packages/kilo-vscode/tests/fixtures/pr-conversation-render.tsx
• packages/kilo-vscode/tests/unit/am-pr-status-bridge.test.ts
• packages/kilo-vscode/tests/unit/am-pr-utils.test.ts
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRConversation.tsx
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRPanel.tsx
• packages/kilo-vscode/webview-ui/agent-manager/pr/pr-panel.css
• packages/kilo-vscode/webview-ui/agent-manager/pr/pr-types.ts
• packages/kilo-vscode/webview-ui/src/types/messages/agent-manager.ts

Previous review (commit fec32f5)

Status: 4 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	3
SUGGESTION	1

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/kilo-vscode/src/agent-manager/pr/timeline.ts	92	Null timelineItems.nodes entries throw and abort fetchThreads, dropping review threads and conversation for that poll
packages/kilo-vscode/src/agent-manager/PRStatusPoller.ts	707	conversationTotal is GitHub totalCount, compared to filtered items, so “Show earlier activity” can appear when the last: 100 window is complete
packages/kilo-vscode/webview-ui/agent-manager/pr/PRConversation.tsx	388	“Show earlier activity” is rendered above the PR description, so it reads as activity from before the PR was opened

SUGGESTION

File	Line	Issue
packages/kilo-vscode/webview-ui/agent-manager/pr/pr-panel.css	400	Commit SHA buttons have hover underline but no :focus-visible outline

Files Reviewed (46 files)

• .changeset/pr-conversation-timeline.md
• packages/kilo-ui/src/components/icon.tsx
• packages/kilo-vscode/src/agent-manager/PRStatusPoller.ts - 1 issue
• packages/kilo-vscode/src/agent-manager/pr/am-pr-types.ts
• packages/kilo-vscode/src/agent-manager/pr/am-pr-utils.ts
• packages/kilo-vscode/src/agent-manager/pr/mutate-comment.ts
• packages/kilo-vscode/src/agent-manager/pr/timeline.ts - 1 issue
• packages/kilo-vscode/src/agent-manager/types.ts
• packages/kilo-vscode/tests/fixtures/pr-comments-render.tsx
• packages/kilo-vscode/tests/fixtures/pr-conversation-render.tsx
• packages/kilo-vscode/tests/unit/am-pr-status-bridge.test.ts
• packages/kilo-vscode/tests/unit/am-pr-utils.test.ts
• packages/kilo-vscode/tests/unit/pr-conversation-render.test.ts
• packages/kilo-vscode/webview-ui/agent-manager/i18n/*.ts (21 locale files)
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRConversation.tsx - 1 issue
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRDescription.tsx
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRPanel.tsx
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRSummary.tsx
• packages/kilo-vscode/webview-ui/agent-manager/pr/PRTimelineRow.tsx
• packages/kilo-vscode/webview-ui/agent-manager/pr/pr-actions.ts
• packages/kilo-vscode/webview-ui/agent-manager/pr/pr-comment-state.ts
• packages/kilo-vscode/webview-ui/agent-manager/pr/pr-panel.css - 1 issue
• packages/kilo-vscode/webview-ui/agent-manager/pr/pr-types.ts
• packages/kilo-vscode/webview-ui/src/stories/agent-manager.stories.tsx
• packages/kilo-vscode/webview-ui/src/types/messages/agent-manager.ts
• packages/kilo-docs/public/img/screenshot-tests/kilo-vscode/visual-regression/agentmanager/pr-panel-conversation-chromium-linux.png

Fix these issues in Kilo Cloud

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_{Reviewed by grok-4.6 · Input: 81.1K · Output: 3.2K · Cached: 108K}

_{Review guidance: REVIEW.md from base branch main}