Bump to v0.2.1 — Batch 3 playtest fixes + auto-updater fix

- Fix: repost + quote buttons added to RootNote in ThreadView (Issue A)
- Fix: switchAccount no longer silently goes read-only when nsec keychain
  entry is missing — nsec accounts stay logged out so the login button
  handles recovery; loginType field added to SavedAccount (Issue B)
- Fix: macos-12 runner replaced with macos-13 in release.yml — macos-12
  was deprecated by GitHub, causing macOS jobs to never run, which
  prevented latest.json from being assembled and broke the auto-updater
  for every user since v0.1.5
- Bump Cargo.toml version (was stuck at 0.1.10)
- Release notes updated with v0.2.1 + v0.2.0 Phase 2 changelog
- README: Windows unsigned installer note added
- ROADMAP: NIP-05 monetization added to brainstorm backlog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ROADMAP.md

@@ -96,10 +96,19 @@ Bugs found during testing are fixed before Phase N+1 starts. A release is cut be
 - Sign events via a remote signer (Nsecbunker, Amber, etc.)
 - Would complete the multi-account story for users who don't want nsec in keychain
 
+### NIP-05 monetization (Phase 4 idea)
+- Offer a paid "Verified NIP-05 name" service (e.g. name@wrystr.app)
+- Would need a backend + domain; Wrystr talks to it; users pay sats via Lightning
+- Free tier: self-hosted as today; paid tier: managed registration
+
 ---
 
 ## What's already shipped
 
+### v0.2.1 — Batch 3 playtest fixes
+- **Fix: repost + quote in thread view** — root note in thread view now shows repost and quote buttons (parity with feed cards)
+- **Fix: login persistence after Windows update** — nsec accounts with a lost keychain entry now stay logged out (login button visible) instead of silently going read-only
+
 ### v0.2.0 — Phase 2: Engagement & Reach
 - **Feed reply context** — replies show "↩ replying to @name" above the note; click to open the parent thread
 - **NIP-65 outbox model** — reads kind 10002 relay lists so you see notes from people who publish to their own relays; profile notes fetched via their write relays; "Publish relay list to Nostr" button in Settings