docs: Update Gitea credentials with password and SSH access

Added complete Gitea authentication details to credentials.md:
- Username: azcomputerguru (corrected from email-only)
- Password: Gptf*77ttb123!@#-git (reset via Docker CLI)
- SSH Key: claude-code (ed25519) configured and verified
- Docker container reference for password resets
- Working SSH access confirmed 2026-01-19

Changes enable automated git operations and future password resets
via Docker exec commands on Jupiter server.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

credentials.md

@@ -173,11 +173,21 @@
 - **URL:** https://git.azcomputerguru.com/
 - **Web Port:** 3000
 - **SSH:** ssh://git@172.16.3.20:2222
-- **User:** mike@azcomputerguru.com
+- **Username:** azcomputerguru
+- **Email:** mike@azcomputerguru.com
+- **Password:** Gptf*77ttb123!@#-git
+- **SSH Key:** claude-code (ed25519) - CONFIGURED AND WORKING
+- **SSH Fingerprint:** SHA256:E+dhx8dYK+pWyqFUcAVAeJtaQEI3cOiIs7eac1w3Dnk
 - **API Token:** (Generate via web UI as needed)
 - **Repository:** azcomputerguru/ClaudeTools
 - **Role:** Source code version control, project sync
-- **Notes:** SSH key authentication required (ed25519)
+- **Docker Container:** gitea (on Jupiter server)
+- **Notes:**
+  - Web login: azcomputerguru / Gptf*77ttb123!@#-git
+  - SSH access: `ssh -T -p 2222 git@172.16.3.20` (verified working 2026-01-19)
+  - Git remote: `ssh://git@172.16.3.20:2222/azcomputerguru/ClaudeTools.git`
+  - Password reset: `docker exec -u git gitea gitea admin user change-password --username azcomputerguru --password 'NEW_PASSWORD'`
+  - SSH key added: 2026-01-19 15:09 (claude-code)
 
 ### ClaudeTools API (Production)
 - **URL:** http://172.16.3.30:8001