Important

This PR adds support for anonymous users with JWT handling, updates OAuth flows, and includes new tests and documentation updates.

• Anonymous User Support:
  • Added anonymous user sign-up in route.ts and verification-code-handler.tsx.
  • JWTs for anonymous users have role: 'anon' and use different signing keys in jwt.tsx.
  • X-Stack-Allow-Anonymous-User header controls anonymous access in middleware.tsx.
• OAuth and JWT Handling:
  • Updated OAuth flows to support anonymous users in route.tsx and tokens.tsx.
  • JWKS endpoint can include anonymous keys in jwks.json/route.ts.
• User and Team Management:
  • createOrUpgradeAnonymousUser function in users.tsx for upgrading anonymous users.
  • Personal team creation logic updated in crud.tsx.
• Testing and Documentation:
  • New E2E tests for anonymous users in anonymous-comprehensive.test.ts and anonymous-upgrade.test.ts.
  • Documentation updates in CLAUDE-KNOWLEDGE.md and CLAUDE.md.
• Type and Interface Updates:
  • Added includeAnonymous option in server-interface.ts and teams/index.ts.
  • Deprecated anonymous-if-exists option in common.ts.

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