[juliusmarminge]

Connects issues to the work done on them.

What it does

• A thread can hold links to issues, shown in its details beside its pull requests. Link and unlink from the issue's header when it is open beside a thread.
• Issue links in a conversation open beside the thread. Each host's definition recognises its own issue URLs, the way it does pull request URLs.
• Agents get tools to list, read, file, comment on and close issues, and to link them to a thread.

Design notes

• A link records how the tracker named the issue when it was linked. Nothing refreshes it in the background; opening the issue reads its live state. This replaces an earlier design with a sync worker on thread events.
• The eight tools add 2,462 bytes to the agent tool list, so agentContextBudget.json is raised and this PR carries the agent-context-increase label.

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: 65dd796 · 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.

[juliusmarminge]

Batch sidebar-threads-18 assessment: blocked; draft preserved and no code pushed. This PR depends on the unmerged issue stack (issues/4-git-hosts), whose services and UI are absent from main; taking over the whole stack is outside this batch.

Confirmed freshness defect: ThreadIssueService.syncLink returns early when sameSnapshot matches, while isStale reads snapshot.syncedAt. Successful reads of unchanged issues never advance that timestamp, so later visits keep treating them as stale.

Human next steps: finish/review the dependency stack, then persist successful refresh time even when title/state are unchanged (without creating a refresh-event loop). Prove repeated visits within five minutes avoid another host read, and verify link → refresh unchanged/changed → unlink through the web and agent MCP tools on the integrated stack. Native clients and host-account integrations remain unverified here.