rdmsm4x - code - RTTy 524 defaults.friendly (PRD §10 house defaults + golden) - claude - TASK-20260926-07 - apps/RTTy - 2026-09-26 07:14 EDT

RTTy fresh-install and Restore Defaults now use the PRD-524 §10 friendly defaults. The golden test pins them. Branch only; nothing shipped.

• Scope: rdmsm4x only. Mirror ~/dev/_scratch/rtty-524-defaults-friendly-20260926, branch grok/524-defaults-friendly (from 2409291).
• Commits: 4a1f247 (feat), 5a7d816 (docs). Pushed to backup only.
• Changes: probes 5 s/15 s; app checks 30 s/120 s; alerts 150 ms held 2 min, 30 ms jitter over 2 min, 5 % loss over 1 min (new LatencyAlertPolicy time windows); deviation alert off; endpoint chips off; charts Line/Line/Area, checks History Line; launch-at-login stays false.
• Files: Sources/LatencyCore/Metrics/{LatencyIncidentDetector,AlertPreferenceMigration}.swift, Sources/RTTy/Stores/ObservationStore.swift, Sources/RTTy/Views/SettingsView.swift, 15 test files, FEATURES.md, both FEATURE_MATRIX.md copies.
• Verification: swift test --disable-swift-testing rc=0. RTTyTests 1345 (8 skipped, 0 failures), LatencyCoreTests 435, RTTyPrivilegedCaptureTests 71. check_feature_inventory.py --static PASS, 67 rows.
• Undo: delete branch grok/524-defaults-friendly (it is unmerged).
• Still open: the flows top-5 + Other chart, the ask-once login prompt, verdict-change-only alerts, the HS-8 iCloud probe-selection sync, the Intel suite and gate, and installed visual acceptance. Details in _handoff/rtty-524-friendly-default/defaults-friendly-run-20260926/HANDBACK.md.