chore(ci): repoint registry/git/cargo meghsakha.com -> breakpilot.com

TLD migration (Phase-3 prep). CI now pushes/pulls against **breakpilot.com** instead of meghsakha.com:
- image registry `repo.meghsakha.com` -> `repo.breakpilot.com` (Harbor, same account)
- git host `gitea.meghsakha.com` -> `git.breakpilot.com` (clone/remote/release-API/insteadOf)
- cargo index `crates.meghsakha.com` -> `crates.breakpilot.com`

Dual-serve means this is a no-op today; it keeps CI working once meghsakha is retired.
Only `.gitea/workflows/*` and `Dockerfile*` touched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/release.yaml

@@ -67,7 +67,7 @@ jobs:
           curl -X POST -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
             -H "Content-Type: application/json" \
             -d "$(jq -Rs '{tag_name:"v${{ steps.v.outputs.version }}", name:"v${{ steps.v.outputs.version }}", body:.}' < RELEASE_NOTES.md)" \
-            https://gitea.meghsakha.com/api/v1/repos/${{ github.repository }}/releases
+            https://git.breakpilot.com/api/v1/repos/${{ github.repository }}/releases
 
   rollback-on-failure:
     needs: promote