docs: mark this branch as the archived MinIO-identity state

This branch is the last state of the project under the MinIO identity. It is
kept so the artifacts released in that form stay traceable to the source that
produced them, and so anyone landing here from an old link is not left reading
current-looking documentation for a line that has moved.

Both READMEs now open with an archive notice: development continues on main as
Silo, the repository is pgsty/silo, the last release cut from here is
RELEASE.2026-08-04T00-00-00Z, and its assets and container image keep the minio
names and are not moved or re-signed.

The notice also states what did not change, because that is the question an
operator arriving here will actually have: MINIO_* variables, minio_* metrics,
x-minio-* headers, /minio/* routes, the .minio.sys layout, IAM and ARN values,
and the github.com/minio/minio module path are all preserved on main, and the
packages install side by side so migration and rollback stay explicit.

Only the two README files change. The tree is otherwise the exact code of
RELEASE.2026-08-04T00-00-00Z, which the tag continues to mark.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

README.md

@@ -1,3 +1,12 @@
+> [!WARNING]
+> **This branch is archived and receives no further changes.**
+>
+> `minio` holds the final state of this project under the MinIO identity. Development continues on **[`main`](https://github.com/pgsty/silo/tree/main)**, where the project is named **Silo** and the binary, packages, systemd unit, container image, and Helm chart are all named `silo`. On 2026-08-06 the repository was renamed `pgsty/minio` → **[`pgsty/silo`](https://github.com/pgsty/silo)** and its default branch `master` → `main`.
+>
+> The last release cut from this branch is **[`RELEASE.2026-08-04T00-00-00Z`](https://github.com/pgsty/silo/releases/tag/RELEASE.2026-08-04T00-00-00Z)** (2026-08-04). Its 19 assets carry the `minio` artifact names, and the matching container image is `docker.io/pgsty/minio:RELEASE.2026-08-04T00-00-00Z`. Those artifacts stay published and unmodified — no tag is moved, re-signed, or removed. If you need the artifacts maintained under the original MinIO identity, this branch and the releases up to that tag are where they live. Later releases carry the `silo` names.
+>
+> **Nothing on the wire changed with the rename.** `MINIO_*` environment variables, `minio_*` Prometheus metrics, `x-minio-*` headers, `/minio/*` routes, the `.minio.sys` on-disk layout, IAM and ARN values, and the `github.com/minio/minio` Go module path are all preserved on `main`. A Silo server reads data written by this release, and the packages install side by side, so migrating or rolling back stays an explicit administrator action.
+
 <h1 align="center">
   <img src=".github/silo-word.svg" alt="SILO" height="80">
 </h1>

README_ZH.md

@@ -1,3 +1,12 @@
+> [!WARNING]
+> **本分支已归档，不再接受任何修改。**
+>
+> `minio` 分支保留本项目以 MinIO 身份存在的最后状态。开发已迁移到 **[`main`](https://github.com/pgsty/silo/tree/main)** 分支，项目在那里以 **Silo** 的身份继续维护，二进制、软件包、systemd unit、容器镜像与 Helm chart 全部更名为 `silo`。2026-08-06，仓库由 `pgsty/minio` 更名为 **[`pgsty/silo`](https://github.com/pgsty/silo)**，默认分支由 `master` 更名为 `main`。
+>
+> 本分支上切出的最后一个版本是 **[`RELEASE.2026-08-04T00-00-00Z`](https://github.com/pgsty/silo/releases/tag/RELEASE.2026-08-04T00-00-00Z)**（2026-08-04）。它的 19 个资产使用 `minio` 命名，对应容器镜像为 `docker.io/pgsty/minio:RELEASE.2026-08-04T00-00-00Z`。这些产物保持已发布状态且不做改动 —— 不移动、不重新签名、不删除任何 tag。如果你需要以原本 MinIO 形态维持的归档构件，就在本分支以及截止到该 tag 的历次发布中。此后的版本使用 `silo` 命名。
+>
+> **更名没有改变任何对外接口。** `MINIO_*` 环境变量、`minio_*` 指标、`x-minio-*` 头、`/minio/*` 路由、`.minio.sys` 磁盘布局、IAM 与 ARN 取值，以及 Go 模块路径 `github.com/minio/minio`，在 `main` 上全部原样保留。Silo 服务端可直接读取本版本写入的数据；新旧软件包并存安装，因此迁移与回滚始终是管理员显式触发的动作。
+
 <h1 align="center">
   <img src=".github/silo.svg" alt="" height="80">
   <img src=".github/silo-word.svg" alt="SILO" height="80">