docs(us2): Soft Serve → Gitea 迁移事实与参考镜像 (Plane VPS-94)

- hosts/us2: Gitea 1.27.3-rootless 部署实况 (repo.windy.me SSH:2222/Web), 16 仓迁移核对, 备份/回滚; soft-serve 停用保留作回滚
- compose/gitea: 参考镜像 (rootless compose + 备份 sidecar + 一次性迁移脚本留档)
- AGENTS/inventory/compose README: 服务表与索引同步

compose/README.md

@@ -11,7 +11,8 @@ files: every secret is a `${VAR}` reference resolved from the **server-local
 | `vaultwarden` | us2 (`/opt/vaultwarden`) | `compose/vaultwarden/compose.yml` | static file + `compose-deploy.yml` |
 | `pdns` | hk2 (`/opt/pdns`) | `compose/pdns/compose.yml` | static file + `compose-deploy.yml` |
 | `pgdb` | pgdb (`/opt/database`, 无 ansible) | `compose/pgdb/compose.yml` | static file（手动部署：scp → `docker compose config -q` → `up -d`；服务器文件名 `docker-compose.yml`） |
-| `soft-serve` | us2 (`/opt/soft-serve`) | `compose/soft-serve/compose.yml` (+ `Dockerfile.backup`, `scripts/`) | static file（参考镜像, 未接入 compose-deploy; 服务器文件为准） |
+| `soft-serve` | us2 (`/opt/soft-serve`, 已退役停用) | `compose/soft-serve/compose.yml` (+ `Dockerfile.backup`, `scripts/`) | static file（参考镜像; 2026-09-18 被 gitea 替换 VPS-94, 数据保留作回滚） |
+| `gitea` | us2 (`/opt/gitea`) | `compose/gitea/compose.yml` (+ `Dockerfile.backup`, `scripts/`) | static file（参考镜像, 未接入 compose-deploy; 服务器文件为准; 2026-09-18 替换 soft-serve, VPS-94） |
 | `adguardhome` | dns.windy.lan (`/opt/adguardhome`) | — (待从 LAN 提取) | static file (pending) |
 | `unifi` | ubnt (`/home/windy/unifi-9`) | — (待从 LAN 提取) | static file (pending) |
 | `wireguard` | us4 (`/opt/wireguard`) | `ansible/templates/wireguard-compose.yml.j2` | role-rendered (inventory vars) |