Switch Gitea remotes from SSH to HTTPS for reliable access

SSH to 172.16.3.20:2222 is unreachable when not on local network.
Updated remotes, docs, and migration script to use
https://git.azcomputerguru.com instead.

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

credentials.md

@@ -438,6 +438,7 @@
 ### Gitea (Git Server)
 - **URL:** https://git.azcomputerguru.com/
 - **Web Port:** 3000
+- **HTTPS:** https://git.azcomputerguru.com (preferred)
 - **SSH:** ssh://git@172.16.3.20:2222 OR ssh://git@git.azcomputerguru.com:2222
 - **Username:** azcomputerguru
 - **Email:** mike@azcomputerguru.com
@@ -451,7 +452,8 @@
 - **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`
+  - Git remote (HTTPS, preferred): `https://git.azcomputerguru.com/azcomputerguru/claudetools.git`
+  - Git remote (SSH, internal only): `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)