fix(web): scale agent spawn rows with interface font

[juliusmarminge]

The agent-spawn row's lead text stayed at 13px when the Interface font size increased, even though its status text and neighboring tool headers scaled.

Use .8125rem for that row. It remains 13px at the default Interface size of 16 and follows the existing preference. Status text, counters, icons, spacing and expanded Code output are unchanged.

Related #7438. This does not add a separate tool-font setting or claim to resolve the full macOS/high-DPI report.

In the actual client at Interface 20, the label now grows from 13px to 16.25px. Restoring Interface 16 returns it to 13px. Code output and status text are unchanged. Normal settings changes, reload, and opening/closing the Agents panel passed. Both captures use the same synthetic data, 1280×900 viewport, scroll position and Interface20/Code13 preferences. The relevant before paths match main; the after uses this exact change.

Before:

After:

Verification: 13 existing appearance tests, web typecheck, targeted lint and formatting pass. An independent reviewer repeated all 13 tests and reviewed the complete change and callers. No static style assertion or diagnostic suppression was added.

GPT 6 Astra via Codex in T3 Code.

Note

Scale AgentSpawnCtaRow text size with interface font

Changes the CTA row's Tailwind text-size utility in AgentSpawnCtaRow from an explicit 13px to 0.8125rem so it scales with the interface font setting. No other component logic or markup changes.

^{Macroscope summarized d16399a.}

[macroscopeapp]

Approvability

Verdict: Approved at d16399a

Macroscope's review found this PR approvable — This is a one-line, self-contained CSS adjustment that makes the agent-spawn row respect the existing interface-font preference. At the default 16px interface size it remains 13px, and it does not affect workflows, data contracts, or static-analysis settings.

^{You can add or adjust custom eligibility rules. Learn more.}

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	13.6 KiB	13.5 KiB	−55 B (−0.4%)	15.1 KiB	✅
Codex	Thread snapshot wire	7.0 KiB	7.0 KiB	+2 B (+0.0%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	6.6 KiB	6.5 KiB	−57 B (−0.8%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	57.1 KiB	57.0 KiB	−88 B (−0.2%)	66.4 KiB	✅
Codex	Live turn messages	10	8	−2 (−20.0%)	21	✅
Claude	Total thread wire	13.6 KiB	13.6 KiB	−30 B (−0.2%)	15.1 KiB	✅
Claude	Thread snapshot wire	7.0 KiB	7.0 KiB	−1 B (−0.0%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	6.6 KiB	6.5 KiB	−29 B (−0.4%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	57.9 KiB	57.8 KiB	−44 B (−0.1%)	66.4 KiB	✅
Claude	Live turn messages	10	9	−1 (−10.0%)	21	✅

Baseline: 39802c0 · PR result: d16399a · 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: 113.8 KiB
• Claude decoded thread snapshot: 114.5 KiB

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