docs: fix stale claims and AI-flavored prose (#397)

AGENTS.md

@@ -125,7 +125,7 @@ repository, and cross-link them — no need to be told.
   change.
 - `~/codes/nix-secrets` — the private agenix store behind `secrets/` and the `mysecrets` input:
   ciphertext and recipient rules for the secrets declared here.
-- `wallpapers`, `nur-packages`, `pyclipsync`, `nu_scripts` — flake inputs; bump with
+- `wallpapers`, `nur-ryan4yin`, `pyclipsync`, `nu_scripts` — flake inputs; bump with
   `just upp <input>` after their source changes, do not edit them from here.
 
 ## Further Context

WORKAROUNDS.md

@@ -25,6 +25,7 @@ A version or revision pinned for a reason that can go away.
 | WA-005 | `tuios` input — `flake.nix`; `home/base/tui/tuios/`                                                                                                                          | nixpkgs lags behind upstream                                                                                                                                                                                                          | Use nixpkgs' `tuios` once it is recent enough                                          | 2026-10-03 | on nixpkgs bump        | active |
 | WA-006 | `nixpkgs-blender` — `flake.nix`                                                                                                                                              | Blender 5.2 LTS + CUDA/OptiX pin; keeps `just up` from triggering a full source rebuild                                                                                                                                               | Bump deliberately when needed; drop the pin if the current nixpkgs build is acceptable | 2026-07-24 | deliberate             | active |
 | WA-007 | WeChat from `nixpkgs-master` — `hardening/bwraps/default.nix`                                                                                                                | newest builds; the pinned channel lags                                                                                                                                                                                                | Fall back to the stable channel once it has a good build                               | 2026-10-03 | on nixpkgs bump        | active |
+| WA-020 | `fcitx5-vinput` pinned to release tag `v2.4.0` — `flake.nix`; consumer `home/linux/gui/base/vinput/default.nix`                                                              | Tracks a release tag instead of a branch, so `just up` stays on that release                                                                                                                                                          | Bump to a newer release tag when its changes are wanted                                | 2026-10-04 | on vinput release      | active |
 
 ## Workarounds
 

agents/README.md

@@ -1,4 +1,4 @@
-# agents
+# Agents
 
 Portable agent resources shared across projects: the global baseline rules, behavioral scenarios for
 those rules, and reference snippets for external tooling.
@@ -75,7 +75,3 @@ Ideas worth adopting once a concrete need appears; nothing here is implemented y
 - Keep files portable and reviewable.
 - Keep secrets and machine-specific credentials out of this directory.
 - Keep guidance generic enough to reuse across multiple agent environments.
-
-## Goal
-
-Maintain one reusable source of truth for agent setup that stays simple to sync and easy to evolve.

flake.nix

@@ -21,6 +21,7 @@
     # https://hydra.nixos.org/jobset/nixpkgs/unstable
     # update via nix flake update nixpkgs --override-input nixpkgs github:NixOS/nixpkgs/<commit-hash>
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    # Pinned to release tag v2.4.0 (not a branch); bump deliberately when needed.
     fcitx5-vinput = {
       url = "github:xifan2333/fcitx5-vinput/v2.4.0";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -31,7 +32,9 @@
     # input together with that consumer.
     nixpkgs-2505.url = "github:nixos/nixpkgs/nixos-25.05";
 
-    # nixpkgs with some custom patches, including the NPU-capable sherpa-onnx package.
+    # ryan4yin/nixpkgs fork for the `.agents/skills/nixpkgs-patched` workflow. It
+    # currently carries no patches (see WORKAROUNDS.md), but `pkgs-patched` is
+    # wired in outputs/default.nix so a temporary carry needs no flake edit.
     nixpkgs-patched.url = "github:ryan4yin/nixpkgs/nixos-unstable-patched";
     # get some latest packages from the master branch
     nixpkgs-master.url = "github:nixos/nixpkgs/master";

hardening/README.md

@@ -12,7 +12,7 @@ for temporary exceptions and known gaps, see [`WORKAROUNDS.md`](../WORKAROUNDS.m
   1. Such as browser cookies, SSH keys, etc.
 - **Per-App Level**: Prevent untrusted applications(such as closed-source apps) from:
   1. Accessing files they shouldn't.
-     - Such as a malicious application accessing your browser's cookies, SSH Keys, etc.
+     - Such as a malicious application accessing your browser's cookies, SSH keys, etc.
   1. Accessing the network when they don't need to.
   1. Accessing hardware devices they don't need.
 

hardening/bwraps/wechat.nix

@@ -70,6 +70,7 @@ appimageTools.wrapAppImage {
     "--setenv GTK_IM_MODULE fcitx"
   ];
   chdirToPwd = false;
+  # WeChat needs outbound network; everything else is unshared
   unshareNet = false;
   unshareIpc = true;
   unsharePid = true;

home/README.md

@@ -30,7 +30,7 @@ home/
 
 2. **linux**: Linux-specific configuration
    - Desktop environments (Noctalia Shell, Niri compositor)
-   - Headless computer-use session (see `gui/i3/README.md`)
+   - Headless computer-use session (see `linux/gui/i3/README.md`)
    - Linux-specific GUI applications
    - System integration tools
 

home/base/README.md

@@ -58,10 +58,8 @@ All configurations in this directory are designed to work across:
 
 - **Linux**: All distributions with Nix and Home Manager
 - **macOS**: Darwin systems with Home Manager
-- **WSL**: Windows Subsystem for Linux
 
 ## Usage
 
-These base configurations provide the foundation for both Linux and Darwin systems, ensuring
+These base configurations provide the foundation for both Linux and Darwin systems while allowing
-consistent environments across different platforms while allowing for platform-specific
+for platform-specific customizations.
-customizations.

home/base/core/editors/helix/README.md

@@ -52,7 +52,7 @@ tuios shortcuts used often (leader is `Ctrl + B`; same idea as in the Neovim not
 
 In Helix, `|` / `!` and variants pipe or insert shell output on selections (see **Changes**).
 
-This flake’s Helix Home Manager module keeps **almost all default keys** but adds several
+This flake's Helix Home Manager module keeps **almost all default keys** but adds several
 normal-mode remaps: **`Ctrl+Shift+o`** → jump backward (leaving `Ctrl+o` free for the shell),
 `Space Space` → `:reload-all`, `Space w` / `Space q` → `:w` / `:q`, `Esc` → collapse selection, and
 `$` / `0` line jumps (see `home/base/core/editors/helix/default.nix`).
@@ -206,7 +206,7 @@ Some bindings need an **LSP** or **tree-sitter** grammar; see notes on the keyma
 1. Neovim has a huge plugin ecosystem.
    1. Helix is newer; a stable plugin system is still evolving:
       <https://github.com/helix-editor/helix/pull/8675>
-1. Neovim has an integrated terminal (similar in spirit to VS Code’s).
+1. Neovim has an integrated terminal (similar in spirit to VS Code's).
    1. Helix does not ship one; use tuios / tmux / terminal features instead.
    1. <https://github.com/helix-editor/helix/issues/1976#issuecomment-1091074719>
    1. <https://github.com/helix-editor/helix/pull/4649>
@@ -215,7 +215,7 @@ Some bindings need an **LSP** or **tree-sitter** grammar; see notes on the keyma
 1. Global substitution is weaker in Helix; run replacements in another pane (tuios) or an external
    tool when needed.
    1. <https://github.com/helix-editor/helix/issues/196>
-   1. Neovim’s `:s` with preview remains strong for interactive refactors; external tools (e.g.
+   1. Neovim's `:s` with preview remains strong for interactive refactors; external tools (e.g.
       <https://github.com/ms-jpq/sad>) can fill gaps in Helix-centric flows.
 1. Complexity vs batteries-included tradeoffs:
    <https://github.com/helix-editor/helix/discussions/6356>

home/base/core/editors/neovim/README.md

@@ -135,7 +135,7 @@ Advanced patterns:
 
 Notes:
 
-- `\v` — “very magic”, less backslash noise in the pattern.
+- `\v` — "very magic", less backslash noise in the pattern.
 - `\1` — first capture group.
 
 ### Specific line ranges

home/base/core/git.nix

@@ -23,10 +23,6 @@
     lfs.enable = true;
 
     signing.format = "openpgp";
-    # signing = {
-    #   key = "xxx";
-    #   signByDefault = true;
-    # };
 
     includes = [
       {
@@ -55,9 +51,6 @@
         "ssh://git@github.com/ryan4yin" = {
           insteadOf = "https://github.com/ryan4yin";
         };
-        # "ssh://git@bitbucket.com/ryan4yin" = {
-        #   insteadOf = "https://bitbucket.com/ryan4yin";
-        # };
       };
 
       alias = {
@@ -98,8 +91,6 @@
       diff-so-fancy = true;
       line-numbers = true;
       true-color = "always";
-      # features => named groups of settings, used to keep related settings organized
-      # features = "";
     };
   };
 

home/base/gui/terminal/README.md

@@ -1,8 +1,7 @@
 # Terminal Emulators
 
-I used to spend a lot of time on terminal emulators, to make them match my taste, but now I found
+I used to spend a lot of time tweaking terminal emulators to match my taste. Now **tuios gives me a
-that it's not worth it, **tuios can provide a user-friendly and unified user experience for all
+consistent experience across all of them**.
-terminal emulators! without any pain**!
 
 Currently, I only use the most basic features of terminal emulators, such as true color, graphics
 protocol, etc. Other features such as tabs, scrollback buffer, select/search/copy, etc, are all

home/base/gui/terminal/ghostty.nix

@@ -21,7 +21,6 @@
         pkgs.ghostty;
     enableBashIntegration = false;
     installBatSyntax = false;
-    # installVimSyntax = true;
     settings = {
       font-family = "Maple Mono NF CN";
       font-size = 13;

home/base/tui/gpg/README.md

@@ -37,8 +37,7 @@ Currently I use both age & GnuPG:
 
 ## Practical Cryptography for Developers
 
-To use GnuGP without seamlessly, Some Practical Cryptography knowledge is required, here is dome
+To use GnuPG seamlessly, some Practical Cryptography knowledge is required, here are some tutorials:
-tutorials:
 
 - English version: <https://github.com/nakov/Practical-Cryptography-for-Developers-Book>
 - Chinese version: <https://thiscute.world/tags/cryptography/>
@@ -49,7 +48,7 @@ tutorials:
 
 > ArchWiki's GnuPG page: <https://wiki.archlinux.org/title/GnuPG>
 
-### 0. How GnuGP generate & protect your keypair?
+### 0. How does GnuPG generate & protect your keypair?
 
 Related Docs:
 
@@ -549,12 +548,12 @@ gpg --verify <file> <signature-file>
 
 ```bash
 # Encrypt a file via recipient's public key, sign it via your private key for signing, and output cleartext.
-# so that the reciiptent can decrypt it via his/her private key.
+# so that the recipient can decrypt it via his/her private key.
 gpg --armor --sign --encrypt --recipient ryan4yin@linux.com <file>
 # or use this short version
 gpg -aser ryan4yin@linux.com <file>
 
-# Descrypt a file via your private key, and verify the signature via the sender's public key.
+# Decrypt a file via your private key, and verify the signature via the sender's public key.
 gpg --decrypt <file>
 # or
 gpg -d <file>
@@ -630,7 +629,7 @@ sub   cv25519/0x9E78E897B6490D6B 2024-01-09 [E]
 # encrypt some file before revoke the keypair
 › gpg -are test@test.t README.md > README.md.asc
 
-# try to decrypt the file, it should works
+# try to decrypt the file, it should work
 › gpg -d README.md.asc
 gpg: encrypted with cv25519 key, ID 0x9E78E897B6490D6B, created 2024-01-09
       "test <test@test.t>"

home/base/tui/password-store/README.md

@@ -5,7 +5,7 @@
 - <https://github.com/gopasspw/gopass>: reimplement in go, with more features.
 - Clients
   - Android: <https://github.com/android-password-store/Android-Password-Store>
-  - Brosers(Chrome/Firefox): <https://github.com/browserpass/browserpass-extension>
+  - Browsers(Chrome/Firefox): <https://github.com/browserpass/browserpass-extension>
 
 ## How to change the gpg key of the pass password store?
 
@@ -31,6 +31,7 @@ To ensure security, we should change the GPG key every two or three years. Here
    # then pass will re-encrypt all the passwords with the new key
    pass init <new-key-id>
    ```
+   If `pass init` fails, fix the error and run it again before continuing.
 6. Check if the key is changed:
    ```bash
    # check which key is used by pass
@@ -38,7 +39,10 @@ To ensure security, we should change the GPG key every two or three years. Here
    # check which key is really used to encrypt the password
    gpg --list-packets path/to/any/password.gpg
    ```
-7. Delete the old GPG key pair:
+   If `.gpg-id` still lists the old key, `pass init` did not apply the change. Re-run it from the
+   password store directory and confirm `.gpg-id` contains the new key.
+7. Delete the old GPG key pair, but only after both checks in step 6 show the new key. Files still
+   encrypted to the old key cannot be decrypted after you delete it.
    ```bash
    # delete the old key pair
    gpg --delete-secret-keys <old-key-id>

home/hosts/README.md

@@ -11,7 +11,7 @@ This directory contains host-specific Home Manager entry modules.
 
 1. Each host output should reference only one file under `home/hosts/...`.
 2. Shared home module imports should be handled in the host file itself.
-   - Linux hosts usually import `../../linux/core.nix` or `../../linux/gui.nix`.
+   - Linux hosts usually import `../linux/core.nix` or `../linux/gui.nix`.
-   - Darwin hosts import `../../darwin`.
+   - Darwin hosts import `../darwin`.
 3. Host-specific overrides (SSH keys, desktop toggles, host-local config links) live in the same
    host file.

home/linux/README.md

@@ -1,13 +1,12 @@
 # Home Manager's Linux Submodules
 
-This directory contains Linux-specific Home Manager configurations organized for different use
+This directory contains Linux-specific Home Manager configurations.
-cases.
 
 ## Configuration Modules
 
 ### Core Configurations
 
-- **core.nix**: Essential Linux-specific configurations and settings
+- **core.nix**: Linux-specific configurations
 - **base/**: Base Linux configurations including shell, tools, and utilities
   - `shell.nix`: Shell configurations and aliases
   - `tools.nix`: Essential command-line tools and utilities
@@ -29,4 +28,3 @@ cases.
 
 - **Lightweight/Terminal**: Use `core.nix` or `tui.nix` for terminal-focused setups
 - **Desktops**: Use `gui.nix` for full desktop environments with Noctalia Shell and Niri compositor
-- **Custom**: Mix and match configurations as needed for your specific use case

home/linux/gui/base/README.md

@@ -1,21 +1,20 @@
 # Base Desktop Environment Configuration
 
-This directory contains base configurations for Linux desktop environments, providing essential
+This directory contains base configurations for Linux desktop environments.
-components for a complete Wayland desktop experience.
 
 ## Overview
 
-The configuration is organized into modular components that can be selectively enabled:
+The configuration is split into modules:
 
-- **Desktop Shell**: Noctalia Shell for unified desktop environment
+- Desktop shell: Noctalia Shell
-- **Applications**: Desktop tools, browsers, editors, media players, etc.
+- Applications: desktop tools, browsers, editors, media players
-- **Development Tools**: IDEs and development utilities
+- Development tools: IDEs and development utilities
-- **System Integration**: Input methods, theming, XDG specifications, GPU settings
+- System integration: input methods, theming, XDG specifications, GPU settings
 
 ## Noctalia
 
-**Noctalia** (v5) is a native C++/Wayland all-in-one desktop shell that replaces multiple separate
+**Noctalia** (v5) is a native C++/Wayland desktop shell that replaces multiple separate tools. It is
-tools with a single, unified solution. It is installed through the upstream
+installed through the upstream
 [`programs.noctalia`](https://docs.noctalia.dev/noctalia/getting-started/nixos/) Home Manager
 module.
 
@@ -62,9 +61,9 @@ Noctalia consolidates functionality that previously required multiple tools:
 - **[`noctalia/config/config.toml`](./noctalia/config/config.toml)**: declarative baseline (v5
   TOML), tracked in the repo and hot-reloaded
 
-  Key features: bar and widgets, control center, desktop widgets, night light, wallpaper, session
+  Covers the bar and widgets, control center, desktop widgets, night light, wallpaper, session
   panel, screenshots with annotation, system monitor, audio/volume, brightness, calendar/weather,
-  color schemes, dock, notifications, OSD, clipboard, and more.
+  color schemes, dock, notifications, OSD, and clipboard.
 
 - **[`hypridle/`](./hypridle/)**: Idle management
 

home/linux/gui/base/desktop-tools.nix

@@ -39,6 +39,5 @@
   # auto mount usb drives
   services = {
     udiskie.enable = true;
-    # syncthing.enable = true;
   };
 }

hosts/12kingdoms-shoukei/apple-silicon.nix

@@ -14,6 +14,7 @@
   # without any authentication whenever the session exits, e.g. logout from the lock
   # screen would bypass it entirely). Keep tuigreet from modules/nixos/desktop.nix.
 
+  # 16G machine: more compressed swap than the 50% default
   zramSwap.memoryPercent = lib.mkForce 75;
 
   nix.settings = {
@@ -27,15 +28,8 @@
 
   environment.systemPackages = with pkgs; [
     box64 # Linux Userspace x86 and x86_64 Emulator, run x86_64 apps(such as games, gui apps) on aarch64.
-    # https://asahilinux.org/2024/12/muvm-x11-bridging/
-    # https://github.com/nix-community/nixos-apple-silicon/issues/237
-    # muvm # run x86_64 Apps/Games in a microVM, used as a workaround of apple silicon's 16k page size.
   ];
 
-  # networking.wireless.iwd = {
-  #   enable = true;
-  #   settings.DriverQuirks.DefaultInterface = true;
-  # };
   # configures the network interface(include wireless) via `nmcli` & `nmtui`
   networking.networkmanager.enable = true;
 
@@ -258,8 +252,4 @@
     };
   };
 
-  # For ` to < and ~ to > (for those with US keyboards)
-  # boot.extraModprobeConfig = ''
-  #   options hid_apple iso_layout=0
-  # '';
 }

hosts/12kingdoms-shoukei/default.nix

@@ -14,11 +14,13 @@ in
 {
   imports = [
     ./hardware-configuration.nix
+    # shoukei reuses ai's preservation layout; no host-specific overrides yet
     ../idols-ai/preservation.nix
   ];
 
-  # disable sunshine for securrity
+  # disable sunshine for security
   services.sunshine.enable = lib.mkForce false;
+  # battery-first: override the profile default
   services.tuned.ppdSettings.main.default = lib.mkForce "power-saver";
 
   # Laptop joins untrusted networks and is never scraped (see youko's

hosts/12kingdoms-shushou/microvm.nix

@@ -42,8 +42,8 @@
   };
 
   # Attach the guest's tap to the VM bridge, the same way the physical NIC is
-  # attached. The tap name is derived from the guest IP (192.168.5.116 -> vm116,
+  # attached. The name is vm<last IP octet> from lib/genMicrovmGuestModule.nix:
-  # 192.168.5.113 -> vm113), as IFNAMSIZ caps interface names at 15 characters.
+  # 192.168.5.116 -> vm116, 192.168.5.113 -> vm113.
   systemd.network.networks."20-vm116" = {
     matchConfig.Name = [ "vm116" ];
     networkConfig = {

hosts/12kingdoms-youko/homelab-services/README.md

@@ -9,20 +9,30 @@ retired `idols-aquamarine` guest):
 
 ## Features
 
-Services:
+### Storage and data
 
-1. caddy: Reverse proxy / TLS front end and the `file.writefor.fun` file server.
+1. gitea: Self-hosted git service (`gitea.nix`).
-1. gitea: Self-hosted git service.
+1. sftpgo: SFTP / WebDAV server (`sftpgo.nix`).
-1. sftpgo: SFTP / WebDAV server.
+1. postgresql: Database for the homelab services (`postgresql.nix`).
-1. transmission: BitTorrent client.
+1. valkey: Redis-compatible cache for Immich (`valkey.nix`).
-1. postgresql: Database for the homelab services.
+
-1. restic: Encrypted backups; hosts the REST server the desktops push to.
+### Backups and object storage
-1. victoriametrics + vmalert + alertmanager + grafana: Monitor the metrics of my homelab.
+
-1. homepage + uptime-kuma: Service dashboard and uptime checks.
+1. restic: Encrypted backups; hosts the REST server the desktops push to (`../default.nix`).
-1. immich: Photo and video library with ML search.
+1. rustfs: S3-compatible object storage (Loki chunks and Terraform state) (`rustfs.nix`).
-1. jellyfin: Media server.
+
-1. rustfs: S3-compatible object storage (Loki chunks and Terraform state).
+### Media
-1. valkey: Redis-compatible cache for Immich.
+
+1. immich: Photo and video library with ML search (`immich/`).
+1. jellyfin: Media server (`jellyfin.nix`).
+1. transmission: BitTorrent client (`transmission.nix`).
+
+### Network and observability
+
+1. caddy: Reverse proxy / TLS front end and the `file.writefor.fun` file server (`caddy.nix`).
+1. victoriametrics + vmalert + alertmanager + grafana: Monitor the metrics of my homelab
+   (`monitoring/`).
+1. homepage + uptime-kuma: Service dashboard and uptime checks (`oci-containers/`).
 
 All the services assume a reverse proxy in front: they listen on localhost, and a caddy service
 listens on the local network interface and proxies requests to them. The exception is transmission,

hosts/12kingdoms-youko/homelab-services/immich/README.md

@@ -100,8 +100,7 @@ document is the agreed design and the rationale.
    tmpfiles).
 3. `../caddy.nix`: the `immich.writefor.fun` vhost.
 4. `../oci-containers/homepage/config/services.yaml`: dashboard entry.
-5. Preview and deploy: `colmena apply dry-activate --on '@youko'`, then
+5. Preview and deploy: `just youko dry-activate`, then `just youko`.
-   `colmena apply switch --on '@youko'`.
 6. Register the first user (becomes admin), disable open signup, add the external library, trigger a
    scan.
 

hosts/12kingdoms-youko/microvm.nix

@@ -44,8 +44,8 @@
   };
 
   # Attach the guest's tap to the VM bridge, the same way the physical NIC is
-  # attached. The tap name is derived from the guest IP (192.168.5.115 -> vm115,
+  # attached. The name is vm<last IP octet> from lib/genMicrovmGuestModule.nix:
-  # 192.168.5.112 -> vm112), as IFNAMSIZ caps interface names at 15 characters.
+  # 192.168.5.115 -> vm115, 192.168.5.112 -> vm112.
   systemd.network.networks."20-vm115" = {
     matchConfig.Name = [ "vm115" ];
     networkConfig = {

hosts/README.md

@@ -10,16 +10,12 @@ This directory contains all host-specific configurations for my NixOS and macOS
 
 Named after characters from "Oshi no Ko":
 
-| Host         | Platform        | Hardware                                | Purpose               | Status      |
+| Host    | Platform        | Hardware                                | Purpose            | Status    |
-| ------------ | --------------- | --------------------------------------- | --------------------- | ----------- |
+| ------- | --------------- | --------------------------------------- | ------------------ | --------- |
-| `ai`         | NixOS           | Ultra 7 270K Plus + RTX 4090, 128G DDR5 | Gaming & Daily Use    | ✅ Active   |
+| `ai`    | NixOS           | Ultra 7 270K Plus + RTX 4090, 128G DDR5 | Gaming & Daily Use | ✅ Active |
-| `aquamarine` | NixOS (libvirt) | Virtual                                 | Monitoring & Services | ⚪ Not Used |
+| `kana`  | NixOS (libvirt) | Virtual                                 | Run AI Agents      | ✅ Active |
-| `kana`       | NixOS (libvirt) | Virtual                                 | Run AI Agents         | ✅ Active   |
+| `ruby`  | NixOS (libvirt) | Virtual                                 | Run AI Agents      | ✅ Active |
-| `ruby`       | NixOS (libvirt) | Virtual                                 | Run AI Agents         | ✅ Active   |
+| `akane` | NixOS (aarch64) | Virtual (UTM)                           | aarch64 test VM    | ✅ Active |
-| `akane`      | NixOS (aarch64) | Virtual (UTM)                           | aarch64 test VM       | ✅ Active   |
-
-`aquamarine` is retired; its services now run directly on `youko`
-(`hosts/12kingdoms-youko/homelab-services/`).
 
 On 2026-04-27 `ai` was rebuilt on a new platform. The MSI board and i5-13600KF it was added with in
 2023-05 (the host was originally named `msi-rtx4090`) gave way to the Colorful CVN Z890 ARK FROZEN +
@@ -34,6 +30,15 @@ installed first; with the 48G pair in first the board does not POST. The bring-u
 settings, the stress-test recipe, and how to recover a board that will not POST are in
 [`idols-ai/MIXED-MEMORY.md`](./idols-ai/MIXED-MEMORY.md).
 
+##### Retired
+
+| Host         | Platform        | Hardware | Purpose               | Status     |
+| ------------ | --------------- | -------- | --------------------- | ---------- |
+| `aquamarine` | NixOS (libvirt) | Virtual  | Monitoring & Services | ⚪ Retired |
+
+`aquamarine` is retired; its services now run directly on `youko`
+(`hosts/12kingdoms-youko/homelab-services/`).
+
 #### `darwin` - macOS Systems
 
 Named after characters from "Frieren: Beyond Journey's End":
@@ -138,7 +143,7 @@ cool!
 
 [Oshi no Ko 【推しの子】 - Wikipedia](https://en.wikipedia.org/wiki/Oshi_no_Ko):
 
-![](../_img/idols-famaily.webp) ![](../_img/idols-ai.webp)
+![](../_img/idols-family.webp) ![](../_img/idols-ai.webp)
 
 [The Rolling Girls【ローリング☆ガールズ】 - Wikipedia](https://en.wikipedia.org/wiki/The_Rolling_Girls):
 

hosts/idols-ai/secureboot.nix

@@ -22,10 +22,8 @@
     pkgs.sbctl
   ];
 
-  # Lanzaboote currently replaces the systemd-boot module.
+  # Lanzaboote replaces the systemd-boot module. NixOS's generated
-  # This setting is usually set to true in configuration.nix
+  # configuration.nix sets this to true, so force it off.
-  # generated at installation time. So we force it to false
-  # for now.
   boot.loader.systemd-boot.enable = lib.mkForce false;
 
   boot.lanzaboote = {

hosts/idols-akane/README.md

@@ -6,8 +6,7 @@ Steps to install:
 
 ```bash
 # 1. format & mount the filesystem
-nix-shell -p disko
+sudo nix --experimental-features "nix-command flakes" run github:nix-community/disko -- --mode destroy,format,mount hosts/idols-akane/disko-fs.nix
-sudo disko --mode destroy,format,mount hosts/idols-akane/disko-fs.nix
 
 # 2. install nixos
 nixos-install --root /mnt --flake .#akane --no-root-password --show-trace --verbose --option substituters "https://mirrors.ustc.edu.cn/nix-channels/store  https://cache.nixos.org/" # install-2

hosts/idols-akane/oci-containers/default.nix

@@ -7,25 +7,8 @@
 {
   imports = mylib.scanPaths ./.;
 
-  # environment.systemPackages = with pkgs; [
-  #   podman-compose
-  # ];
-
   virtualisation = {
     docker.enable = true;
-    # podman = {
-    #   enable = true;
-    #   # Create a `docker` alias for podman, to use it as a drop-in replacement
-    #   dockerCompat = true;
-    #   # Required for containers under podman-compose to be able to talk to each other.
-    #   defaultNetwork.settings.dns_enabled = true;
-    #   # Periodically prune Podman resources
-    #   autoPrune = {
-    #     enable = true;
-    #     dates = "weekly";
-    #     flags = [ "--all" ];
-    #   };
-    # };
 
     oci-containers = {
       backend = "docker";

hosts/k8s/README.md

@@ -21,8 +21,8 @@ its state in three sparse ext4 images under the host's `/var/lib/microvms/<name>
 
 The guest's root is a tmpfs and `/nix/store` is the host's store shared read-only (virtiofs), so no
 image has to be built or uploaded; only the volumes above persist. The guest's tap interface is
-bridged onto `br0`, and its name is derived from the guest IP (e.g. `192.168.5.114` -> `vm114`, as
+bridged onto `br0`, and its name is derived from the last octet of the guest IP by
-`IFNAMSIZ` caps interface names at 15 characters).
+`lib/genMicrovmGuestModule.nix` (e.g. `192.168.5.114` -> `vm114`).
 
 ### Updating a running guest
 

hosts/k8s/disko-config/README.md

@@ -16,6 +16,7 @@ cd nix-config
 # encrypt the root partition with luks2 and argon2id, will prompt for a passphrase, which will be used to unlock the partition.
 sudo nix --experimental-features "nix-command flakes" run github:nix-community/disko -- --mode destroy,format,mount hosts/k8s/disko-config/host-disko-fs.nix
 ## 2. setup the automatic unlock via the tpm2 chip
+# find the LUKS partition with: lsblk -f
 systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs=0+7 /dev/<encrypted-disk-part-path>
 
 ## 3. install nixos
@@ -31,6 +32,7 @@ nixos-enter
 # otherwise the / will be cleared and data will lost
 ## NOTE: preservation just create links from / to /persistent
 ##       We need to copy files into /persistent manually!!!
+mkdir -p /persistent/etc
 mv /etc/machine-id /persistent/etc/
 mv /etc/ssh /persistent/etc/
 mkdir -p /persistent/home/ryan

infra/README.md

@@ -64,7 +64,10 @@ Each subdirectory contains its own Terraform configuration:
 
 ## Security Considerations
 
-- All storage buckets are configured with appropriate access policies
+- Buckets are declared as bare `aws_s3_bucket` resources, with no bucket policy or server-side
-- State files are encrypted at rest
+  encryption configuration. The only guard in Terraform is `prevent_destroy` on the `tf-s3-backend`
-- Access credentials are managed through environment variables
+  state bucket.
-- Network access is restricted to necessary hosts only
+- IAM users and policies are created by hand with the `rc` client, not Terraform (see
+  [rustfs/README.md](./rustfs/README.md)).
+- Access credentials are managed through environment variables (`AWS_ACCESS_KEY_ID` /
+  `AWS_SECRET_ACCESS_KEY`).

infra/rustfs/README.md

@@ -21,6 +21,9 @@ set -a; . <(sudo cat /run/agenix/rustfs.env); set +a
 rc alias set rustfs https://s3.writefor.fun "$RUSTFS_ACCESS_KEY" "$RUSTFS_SECRET_KEY"
 ```
 
+Sourcing the file is a deliberate exception to the rule against reading decrypted secrets: `cat`
+runs inside the process substitution, so the values go into the shell and are never printed.
+
 ## Buckets
 
 ```bash

lib/README.md

@@ -28,12 +28,9 @@ reduce code duplication and make it easier to add new machines.
 
 ## Usage
 
-These functions are designed to:
+The generators import the shared host modules, so a new machine supplies its own values and
-
+system-specific attributes. `colmenaSystem` covers remote deployment, and `genLibvirtDomainXml`
-- Generate consistent configurations across different architectures
+renders the domain XML for one guest.
-- Provide type-safe configuration for complex systems
-- Enable easy scaling of the infrastructure
-- Support both local development and production deployments
 
 ## Architecture Support
 

nixos-installer/README.md

@@ -1,7 +1,7 @@
 # Nix Environment Setup for Host: Idols - Ai
 
 > :red_circle: **IMPORTANT**: **Do not deploy this flake directly on your machine.** Write your own
-> configuration from scratch and use this only as reference.\*\*
+> configuration from scratch and use this only as reference.
 
 This flake prepares a Nix environment for setting up the desktop host
 [hosts/idols-ai](../hosts/idols-ai/) (from the main flake) on a new machine.
@@ -52,6 +52,7 @@ nix run github:nix-community/disko -- --mode destroy,format,mount ../hosts/idols
 nix run github:nix-community/disko -- --mode destroy,format,mount ../hosts/idols-ai/disko-fs-data.nix
 
 # setup the automatic unlock via the tpm2 chip
+# find the LUKS partition with: lsblk -f
 systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs=0+7 /dev/<encrypted-disk-part-path>
 ```
 
@@ -60,8 +61,8 @@ systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs=0+7 /dev/<encrypted-disk-part
 ```bash
 sudo su
 
-# add ssh key to ssh-agent, it's required to pull my asahi=firmware
+# add ssh key to ssh-agent, required to pull the my-asahi-firmware input
-$(ssh-agent)
+eval "$(ssh-agent)"
 ssh-add /path/to/ssh-key
 
 # From nix-config/nixos-installer
@@ -109,7 +110,7 @@ After the first boot:
    ```
 
 2. Rekey secrets for the new host: follow [../secrets/README.md](../secrets/README.md) so agenix can
-   decrypt using this host’s SSH key.
+   decrypt using this host's SSH key.
 
 3. Deploy the main config:
 

nixos-installer/README.shoukei.md

@@ -217,7 +217,7 @@ Filename                                Type            Size            Used
 /mnt/swap/swapfile                      file            16777200        0               -2
 ```
 
-### 3. Generating the NixOS Configuration and Installing NixOS
+### 4. Generating the NixOS Configuration and Installing NixOS
 
 Clone this repository:
 
@@ -249,7 +249,8 @@ cd ~/nix-config/nixos-installer/
 rm -rf /mnt/etc
 
 # install nixos
-# NOTE: the root password you set here will be discarded when reboot
+# NOTE: --no-root-password leaves root locked; log in as ryan with the password from
+# vars/default.nix
 nixos-install --root /mnt --flake .#shoukei --no-root-password --show-trace --verbose # install-1
 
 # if you want to use a cache mirror, run this command instead
@@ -258,7 +259,7 @@ nixos-install --root /mnt --flake .#shoukei --no-root-password --show-trace --ve
 
 # enter into the installed system, check password & users
 # `su ryan` => `sudo -i` => enter ryan's password => successfully login
-# if login failed, check the password you set in install-1, and try again
+# if login failed, check ryan's initial password in vars/default.nix, and try again
 nixos-enter
 
 
@@ -268,6 +269,7 @@ nixos-enter
 # otherwise the / will be cleared and data will lost
 ## NOTE: preservation just create links from / to /persistent
 ##       We need to copy files into /persistent manually!!!
+mkdir -p /persistent/etc
 mv /etc/machine-id /persistent/etc/
 mv /etc/ssh /persistent/etc/
 
@@ -328,4 +330,4 @@ just niri
 Finally, to enable secure boot, follow the instructions in
 [lanzaboote - Quick Start](https://github.com/nix-community/lanzaboote/blob/master/docs/QUICK_START.md)
 and
-[nix-config/ai/secure-boot.nix](https://github.com/ryan4yin/nix-config/blob/main/hosts/idols-ai/secureboot.nix)
+[hosts/idols-ai/secureboot.nix](https://github.com/ryan4yin/nix-config/blob/main/hosts/idols-ai/secureboot.nix)

nixos-installer/flake.nix

@@ -74,6 +74,7 @@
             ../modules/nixos/base/ssh.nix
 
             ../hosts/12kingdoms-shoukei/hardware-configuration.nix
+            # shoukei reuses ai's preservation layout; no host-specific overrides yet
             ../hosts/idols-ai/preservation.nix
           ];
         };

outputs/README.md

@@ -7,18 +7,14 @@ There is no need to do this when you have a small number of machines.
 But when you have a large number of machines, it is necessary to manage them in a fine-grained way,
 otherwise, it will be difficult to manage and maintain them.
 
-The number of my machines has grown past a dozen, and the increase in scale has shown signs of
+I have more than a dozen machines now, and a fine-grained layout keeps them manageable.
-getting out of control of complexity, so it is a natural and reasonable choice to use this
-fine-grained architecture to manage.
 
 ## Tests
 
-Testing is not necessary when your configuration is not complex, but with the increase in the number
+Simple configurations do not need tests, but a dozen machines make a broken setting easy to miss.
-and configuration of your machines, testing becomes more and more important.
 
-We have two types of tests: eval tests and nixos tests, both of which can help us detect many
+There are two types of tests: eval tests and NixOS tests. They catch configuration errors before a
-obscure errors early, so as to avoid testing directly in the real world, and to avoid failures in
+change reaches a real machine.
-personal computers and even corporate online environments.
 
 Related projects & docs:
 
@@ -121,3 +117,8 @@ All the outputs of this flake are defined here.
     └── tests         # eval tests (btrbk, computer-use-headless, hostname,
                       # kernel, security-*, ups-metrics, ...)
 ```
+
+The tree lists the per-host sources and tests. The flake also exposes a `checks` output: every
+system has `eval-tests` and `pre-commit-check`, and `x86_64-linux` adds `security-exporters`, which
+imports the top-level `tests/security-exporters.nix`. See [`../SECURITY.md`](../SECURITY.md) for
+when to run it.

outputs/default.nix

@@ -31,12 +31,6 @@ let
         pkgs-stable
         ;
 
-      # use unstable branch for some packages to get the latest updates
-      # pkgs-unstable = import inputs.nixpkgs-unstable {
-      #   inherit system; # refer the `system` parameter form outer scope recursively
-      #   # To use chrome, we need to allow the installation of non-free software
-      #   config.allowUnfree = true;
-      # };
       pkgs-2505 = import inputs.nixpkgs-2505 {
         inherit system;
         # To use chrome, we need to allow the installation of non-free software

overlays/README.md

@@ -21,8 +21,7 @@ overlays/
 
 ### 1. `default.nix`
 
-The entrypoint of overlays, it execute and import all overlay files in the current directory with
+The entrypoint imports every overlay file in this directory and applies it to the given arguments.
-the given args.
 
 ### 2. Package overlays
 

secrets/README.md

@@ -62,7 +62,8 @@ every local account. Always set `user` together with `mode`. nix-darwin ignores
 > set to a local `~/codes/nix-secrets` checkout, so invoke it from this repository's root.
 
 This task is accomplished using the [agenix](https://github.com/ryantm/agenix) CLI tool with the
-`./secrets.nix` file, so you need to have it installed first:
+`./secrets.nix` file in the private `nix-secrets` repository, so you need to have it installed
+first:
 
 To use agenix temporarily, run:
 

vars/README.md

@@ -24,7 +24,7 @@ Contains user information, SSH keys, and password configuration:
 
 ### 2. `networking.nix`
 
-Comprehensive network configuration including:
+Defines:
 
 - **Gateway settings**: Main router and proxy gateway configurations
 - **DNS servers**: IPv4 and IPv6 name servers
@@ -40,5 +40,4 @@ Comprehensive network configuration including:
 
 ## Usage
 
-These variables are imported and used throughout the configuration to ensure consistency across all
+These variables are imported and used throughout the configuration.
-hosts and maintain centralized network and security settings.