diff --git a/.agents/skills/homelab-ssh/SKILL.md b/.agents/skills/homelab-ssh/SKILL.md
index e4517b4..8a0f2a7 100644
--- a/.agents/skills/homelab-ssh/SKILL.md
+++ b/.agents/skills/homelab-ssh/SKILL.md
@@ -5,7 +5,7 @@ description: Connect to and run commands on the valhalla homelab server (ginnoir
 
 # homelab-ssh
 
-The production homelab runs on a headless Ubuntu host reachable at `ssh ginnoir@valhalla` (key-based auth; resolves and works from this Windows host directly).
+The production homelab runs on a headless **EndeavourOS (Arch)** host reachable at `ssh ginnoir@valhalla` (key-based auth; resolves and works from this Windows host directly). Package manager is `pacman` — there is no `apt`/`apt-get`. `ginnoir` has passwordless `sudo`.
 
 ## Connect (non-interactive / safe for automation)
 
diff --git a/.claude/skills/homelab-ssh/SKILL.md b/.claude/skills/homelab-ssh/SKILL.md
index e4517b4..8a0f2a7 100644
--- a/.claude/skills/homelab-ssh/SKILL.md
+++ b/.claude/skills/homelab-ssh/SKILL.md
@@ -5,7 +5,7 @@ description: Connect to and run commands on the valhalla homelab server (ginnoir
 
 # homelab-ssh
 
-The production homelab runs on a headless Ubuntu host reachable at `ssh ginnoir@valhalla` (key-based auth; resolves and works from this Windows host directly).
+The production homelab runs on a headless **EndeavourOS (Arch)** host reachable at `ssh ginnoir@valhalla` (key-based auth; resolves and works from this Windows host directly). Package manager is `pacman` — there is no `apt`/`apt-get`. `ginnoir` has passwordless `sudo`.
 
 ## Connect (non-interactive / safe for automation)
 
diff --git a/AGENTS.md b/AGENTS.md
index 1acc6ae..b5cceb7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -9,9 +9,9 @@ from your tool's user-level instructions (`~/.codex/AGENTS.md` / `~/.gemini/GEMI
 
 ## Essentials (full detail in `CLAUDE.md`)
 
-- **What this is:** deployment config for a live, single-host Docker homelab on a headless Ubuntu
-  server reachable at `ssh ginnoir@valhalla`. ~50 containers in per-domain Portainer-managed stacks.
-  This is **not** application code.
+- **What this is:** deployment config for a live, single-host Docker homelab on a headless
+  **EndeavourOS (Arch)** server reachable at `ssh ginnoir@valhalla` — `pacman`, not `apt`.
+  ~50 containers in per-domain Portainer-managed stacks. This is **not** application code.
 - **The repo is canonical.** Portainer polls `main` every 5 min and redeploys any app stack whose
   `stacks/<domain>/*` files changed. Editing here changes nothing until you `git push`.
 - **Deployment channels:**