docs(fork-churn): row for v0.0.38-nightly.20260831.1241

[donjor-agent]

🤖 claude/anthropic claude-fable-5-1 (high)

What Changed

Appends the churn-ledger row for the v0.0.38-nightly.20260831.1241 unblock walk. Generated by node scripts/fork-churn.ts append; docs/internals/fork-churn.md is not hand-edited.

Field	Value
Range	04e0e68d4ba7b8269006f103df961fa76227143d → 1e5973a8b10b88a14cc1a5acf61b405fff8af75e
Conflicts	mechanical: 1
Decisions	8 agent, 0 human

The single conflict was apps/web/src/components/ChatView.tsx in e912a4fd0f2c feat: New worktrunk thread mode replaces the Worktrunk hook switches, resolved by rerere replay. That promotes ChatView.tsx to a hot seam at two walks.

Why

The row lands after the apply and is not part of the rebased lane, so it ships as its own docs-only change.

Worth noting from this walk: neither packages/contracts/src/settings.test.ts nor apps/web/src/components/ChatView.logic.test.ts conflicted, and both were repeat offenders before the fork tests moved into fork-owned sibling files. That is the first reading of the third acceptance criterion on #439.

Verification

• node scripts/fork-churn.ts render --check: docs/internals/fork-churn.md is current
• node scripts/fork-delta.ts --check: ok: 207 fork commits tagged

Checklist

• Ledger regenerated, not hand-edited
• Row range matches the applied lease and installed head

Refs #403

Fork-Domain: fork-meta
Fork-Tier: qol
Fork-Upstreamable: no