docs: update PRD_ALPHA_GO_LIVE.md to reflect completed E2E tests master
Updated PRD to show all 6 E2E test suites are complete: **Status Change:** - From: "Pre-Alpha" - To: "Pre-Alpha → **E2E Testing Complete** 🎉" **Updates:** - Added major progress update section at top - Marked all E2E test sections (lines 211-312) as ✅ COMPLETE - Added actual implementation times and test file locations - Updated timeline estimate: 65-80 hours → 50-65 hours remaining - Updated success criteria to show E2E test milestones achieved - Updated next steps to show E2E tests moved to completed status - Added celebration message for major milestone **Test Suite Completion:** ✅ Full User Journey (40 min) ✅ Blob Upload (35 min) ✅ Multi-Community Timeline (30 min) ✅ Concurrent Scenarios (45 min - with race detection) ✅ Rate Limiting (25 min) ✅ Error Recovery (30 min) Total: ~3 hours of E2E test implementation **Next Phase:** P0 blockers (JWT verification, DPoP fix, did:web verification) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>