docs(prp-status): #31 close + round 10 E2E closure + PR #86-#92 summary

[TortoiseWolfe]

Summary

docs/prp-docs/PRP-STATUS.md was last fully refreshed 2026-04-25. Six PRs have landed since then (2026-05-12 → 2026-05-14) closing the long-running E2E flake pattern, the #31 GA4 ticket, and improving fork onboarding. This PR brings the dashboard header + hotspots note up to date.

Three targeted edits

1. Header — bump dates, update Shipped count 17→18 (019 GA moved Shipped after [Gap-Audit] 019 Google Analytics: wire NEXT_PUBLIC_GA_MEASUREMENT_ID + theme-change tracking #31 close), refresh "Current Phase" line to mention round 10 closure.
2. New "v0.4.x updates since 2026-04-25 audit" section — one-paragraph summary of each merged PR (fix(docker): pin pnpm version to honor package.json packageManager field #86, docs(auth): #85 replace stale Supabase project ref with placeholder #88, fix(ci): serialize E2E runs via repo-wide concurrency mutex #89, docs(status): #31 close + round 10 E2E flake mitigation resolution #90, docs(fork): add service-config checklist + auth verification section #91, chore: gitignore .screenshots/ + capture round 10 lessons in CLAUDE.md #92) plus issue closures ([Gap-Audit] 019 Google Analytics: wire NEXT_PUBLIC_GA_MEASUREMENT_ID + theme-change tracking #31, OAuth providers misconfigured: Google + GitHub Client IDs are literal 'placeholder_*' strings #85).
3. Stability hotspots callout — note that the "E2E flake mitigation" row is resolved at round 10 via the concurrency mutex (PR fix(ci): serialize E2E runs via repo-wide concurrency mutex #89). Other 9 hotspots remain open.

Out of scope

Per-feature audit data (lines 36+ in the doc) is left untouched — the 2026-04-25 sweep is still the canonical detail. This refresh is purely the top-of-document changes needed to reflect 19 days of activity.

Verification

• grep "Last Updated" docs/prp-docs/PRP-STATUS.md → "2026-05-14"
• Pre-commit hooks pass (prettier + gitleaks)

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