Multi-user support: identity tracking for Mike + Howard

- .claude/identity.json (gitignored, per-machine) identifies who's at the keyboard
- .claude/users.json (tracked) registers known team members + roles + machines
- CLAUDE.md: on first sync, Claude asks "Mike or Howard?" and creates identity.json
- Session logs must include User section for attribution
- Git commits use per-user name/email (shared Gitea push account)
- Howard Enos (tech, full trust) added as second team member
- Memory entry created for Howard

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/memory/MEMORY.md

@@ -11,6 +11,9 @@
 - [Dataforth Contact - AJ](reference_dataforth_contact.md) - AJ at Dataforth, dataforthgit@ email forwarding to him
 - [TickTick Integration](reference_ticktick_integration.md) - OAuth API integration, MCP server, SOPS vault creds, project/task CRUD
 
+## Users
+- [Howard Enos](user_howard.md) — Mike's brother, technician, full trust/access. Known machine: ACG-TECH03L.
+
 ## Feedback
 - [D2TESTNAS SSH Access](feedback_d2testnas_ssh.md) - Use root@192.168.0.9 with Paper123!@#, not sysadmin
 - [Bypass Permissions Setting](feedback_bypass_permissions_setting.md) - Set permissions.defaultMode to bypassPermissions in settings.json on all machines