[juliusmarminge]

Adds the web surface for the issue tracking core in #19259.

What it does

• The Issues page lists issues from every project's tracker, grouped per tracker account, with open/closed, involvement and search filters, and loads further pages per tracker.
• An issue opens in the right panel beside the list: description, comments, activity, linked pull requests, labels, assignees and reactions. It can be edited, commented on, and closed or reopened where the tracker and account allow.
• New issue files one, starting from the repository's templates where it has them.
• Reachable from the sidebar, the command palette and reopen-closed-view.

Notes

• The reaction bar is now one component shared with pull requests instead of a copy.
• The page lives in components/issue/IssuesPage.tsx with a thin route, like the pull requests page.
• Mobile is not in this stack.

Verified against live GitHub issues on a dev server:

Opus 5.5 and Fable 5.2 in Claude Code, running in T3 Code.

🤖 Generated with Claude Code

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

ℹ️ No successful main baseline artifact is available yet. This run establishes the initial measurement.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	—	5.0 KiB	—	6.8 KiB	✅
Codex	Thread snapshot wire	—	3.8 KiB	—	4.9 KiB	✅
Codex	Live turn WebSocket wire	—	1.2 KiB	—	2.0 KiB	✅
Codex	Live turn WebSocket decoded	—	21.5 KiB	—	24.4 KiB	✅
Codex	Live turn messages	—	1	—	8	✅
Claude	Total thread wire	—	5.0 KiB	—	6.8 KiB	✅
Claude	Thread snapshot wire	—	3.8 KiB	—	4.9 KiB	✅
Claude	Live turn WebSocket wire	—	1.2 KiB	—	2.0 KiB	✅
Claude	Live turn WebSocket decoded	—	21.9 KiB	—	24.4 KiB	✅
Claude	Live turn messages	—	1	—	8	✅

Other scenarios

No main baseline exists yet for these 64 scenario measurements.

All 64 scenario measurements

Provider	Scenario	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	short turn resume	WebSocket decoded	—	10.5 KiB	—	12.7 KiB	✅
Codex	short turn resume	WebSocket messages	—	2	—	2	✅
Codex	long turn running, cold open	HTTP decoded	—	281.7 KiB	—	302.7 KiB	✅
Codex	long turn running, cold open	rows	—	75	—	75	✅
Codex	long turn running, history page	HTTP decoded	—	92.4 KiB	—	107.4 KiB	✅
Codex	long turn running, history page	rows	—	75	—	75	✅
Codex	long turn finished, cold open	HTTP decoded	—	381.5 KiB	—	410.2 KiB	✅
Codex	long turn finished, cold open	rows	—	151	—	151	✅
Codex	long turn finished, socket cold open	WebSocket decoded	—	381.6 KiB	—	410.2 KiB	✅
Codex	long turn finished, socket cold open	WebSocket messages	—	2	—	2	✅
Codex	long turn finished, socket cold open	rows	—	151	—	151	✅
Codex	long turn finished, work page	HTTP decoded	—	186.2 KiB	—	200.2 KiB	✅
Codex	long turn finished, work page	rows	—	150	—	150	✅
Codex	idle thread resume	WebSocket decoded	—	65 B	—	200 B	✅
Codex	idle thread resume	WebSocket messages	—	1	—	1	✅
Codex	fleet shell snapshot	HTTP decoded	—	42.4 KiB	—	53.7 KiB	✅
Codex	fleet shell snapshot	rows	—	27	—	27	✅
Codex	fleet shell subscribe	WebSocket decoded	—	65 B	—	200 B	✅
Codex	fleet shell subscribe	WebSocket messages	—	1	—	1	✅
Codex	fleet shell resume check	HTTP decoded	—	18 B	—	100 B	✅
Codex	fleet shell resume check	rows	—	0	—	0	✅
Codex	stale shell reload	HTTP decoded	—	42.4 KiB	—	53.7 KiB	✅
Codex	stale shell reload	rows	—	27	—	27	✅
Codex	stale shell resume	WebSocket decoded	—	140 B	—	400 B	✅
Codex	stale shell resume	WebSocket messages	—	2	—	2	✅
Codex	stale todo list cold open	HTTP decoded	—	72.4 KiB	—	83.0 KiB	✅
Codex	stale todo list cold open	rows	—	75	—	75	✅
Codex	stale todo list cold open	nodes	—	2	—	4	✅
Codex	stale todo list cold open	subagents	—	2	—	4	✅
Codex	stale todo list cold open	plans	—	1	—	2	✅
Codex	stale todo list cold open	providerTurns	—	1	—	2	✅
Codex	stale todo list cold open	checkpoints	—	1	—	2	✅
Claude	short turn resume	WebSocket decoded	—	10.6 KiB	—	12.7 KiB	✅
Claude	short turn resume	WebSocket messages	—	2	—	2	✅
Claude	long turn running, cold open	HTTP decoded	—	283.3 KiB	—	302.7 KiB	✅
Claude	long turn running, cold open	rows	—	75	—	75	✅
Claude	long turn running, history page	HTTP decoded	—	93.4 KiB	—	107.4 KiB	✅
Claude	long turn running, history page	rows	—	75	—	75	✅
Claude	long turn finished, cold open	HTTP decoded	—	384.2 KiB	—	410.2 KiB	✅
Claude	long turn finished, cold open	rows	—	151	—	151	✅
Claude	long turn finished, socket cold open	WebSocket decoded	—	384.3 KiB	—	410.2 KiB	✅
Claude	long turn finished, socket cold open	WebSocket messages	—	2	—	2	✅
Claude	long turn finished, socket cold open	rows	—	151	—	151	✅
Claude	long turn finished, work page	HTTP decoded	—	188.1 KiB	—	200.2 KiB	✅
Claude	long turn finished, work page	rows	—	150	—	150	✅
Claude	idle thread resume	WebSocket decoded	—	66 B	—	200 B	✅
Claude	idle thread resume	WebSocket messages	—	1	—	1	✅
Claude	fleet shell snapshot	HTTP decoded	—	43.0 KiB	—	53.7 KiB	✅
Claude	fleet shell snapshot	rows	—	27	—	27	✅
Claude	fleet shell subscribe	WebSocket decoded	—	66 B	—	200 B	✅
Claude	fleet shell subscribe	WebSocket messages	—	1	—	1	✅
Claude	fleet shell resume check	HTTP decoded	—	18 B	—	100 B	✅
Claude	fleet shell resume check	rows	—	0	—	0	✅
Claude	stale shell reload	HTTP decoded	—	43.0 KiB	—	53.7 KiB	✅
Claude	stale shell reload	rows	—	27	—	27	✅
Claude	stale shell resume	WebSocket decoded	—	140 B	—	400 B	✅
Claude	stale shell resume	WebSocket messages	—	2	—	2	✅
Claude	stale todo list cold open	HTTP decoded	—	73.4 KiB	—	83.0 KiB	✅
Claude	stale todo list cold open	rows	—	75	—	75	✅
Claude	stale todo list cold open	nodes	—	2	—	4	✅
Claude	stale todo list cold open	subagents	—	2	—	4	✅
Claude	stale todo list cold open	plans	—	1	—	2	✅
Claude	stale todo list cold open	providerTurns	—	1	—	2	✅
Claude	stale todo list cold open	checkpoints	—	1	—	2	✅

Baseline: unavailable · PR result: b53e0a1 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 108.5 KiB
• Claude decoded thread snapshot: 108.8 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

[Artic0din]

The Issues page has no project filter like the Pull Requests page has. The server already supports one: IssueService.list honours IssueListInput.projectId, and the agent list-issues tool uses it. The page never sends it, though, so with many projects there's no way to narrow the list to one repository.