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>

scripts/migration-restore.sh

@@ -17,7 +17,7 @@ set -euo pipefail
 # ---------------------------------------------------------------------------
 ARCHIVE_PATH="${1:-}"
 TARGET_DIR="${2:-"${HOME}/ClaudeTools"}"
-GITEA_REPO="ssh://git@172.16.3.20:2222/azcomputerguru/claudetools.git"
+GITEA_REPO="https://git.azcomputerguru.com/azcomputerguru/claudetools.git"
 TEMP_EXTRACT=""
 WARN_COUNT=0