feat(mobile): favorite models in thread settings

[rynfar]

Mobile users could select models but could not keep frequently used models together. Add a separate favorite action to each model row, a Favorites filter on iOS and Android, and favorite-first ordering within provider groups. Favorites are stored per device and keyed by provider instance and model, so separate accounts do not collide.

Selectively ports T3 Code 298f8c95cd7c20ea7943a431f22e836fa637457b plus its required rapid-update correction 82cd1d1aabe8baa4a5ae23f3c7b08b3fce092e08. Pylon's existing search UI, model disabled reasons, provider options, and selection behavior remain in place; unrelated upstream Material layout changes are excluded. This does not synchronize favorites between devices, matching the existing device-local web setting.

Validation: 20 focused tests passed, including a real preference-store write, cold restart and sanitizer round trip; mobile typecheck and scoped lint passed (existing memo-dependency warnings). Independent review passed on the behavior diff 7e0b51e3cf9310a55ee76e15c3b224fdeeffd39a85d1efca4eee4b912ff386f1 and test-only delta 1d8bc517f3252f6c4291743775ac5bb0d6c7fe08a390e3fb1641e976fa0d4848. Native device UI has not been verified.

Model: GPT-6 Sol (low reasoning), via Codex harness; reviewed under GPT-6 Astra oversight.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

1 Skipped Deployment

Project	Deployment	Actions	Updated
pylon-marketing	Ignored	Preview	Sep 24, 2026 9:50am UTC

[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	14.0 KiB	13.9 KiB	−29 B (−0.2%)	15.1 KiB	✅
Codex	Thread snapshot wire	7.2 KiB	7.2 KiB	0 B (0.0%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	6.8 KiB	6.7 KiB	−29 B (−0.4%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	58.0 KiB	58.0 KiB	−44 B (−0.1%)	66.4 KiB	✅
Codex	Live turn messages	10	9	−1 (−10.0%)	21	✅
Claude	Total thread wire	14.0 KiB	14.0 KiB	−13 B (−0.1%)	15.1 KiB	✅
Claude	Thread snapshot wire	7.2 KiB	7.2 KiB	−10 B (−0.1%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	6.7 KiB	6.7 KiB	−3 B (−0.0%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	58.9 KiB	58.9 KiB	−44 B (−0.1%)	66.4 KiB	✅
Claude	Live turn messages	10	9	−1 (−10.0%)	21	✅

Baseline: 7ed3f71 · PR result: 4040e37 · 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: 115.6 KiB
• Claude decoded thread snapshot: 116.4 KiB

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