fix: use ~/dotfiles, update docs, and disable Docker

Co-authored-by: aider (openrouter/openai/gpt-5.2) <aider@aider.chat>

docs/INSTALL_NIXOS_WIPE_NVME_FLAKE.md

@@ -11,6 +11,8 @@ This guide assumes:
 - Your config repo is a flake with output: `#sam-4screen-desktop`
 - Integral300 (ext4) is available and will be mounted on NixOS at: /data
   - UUID: 27febd74-20aa-4a3a-92c1-6fdd1ad7e88e
+- Dotfiles will live on the installed system at:
+  - `~/dotfiles` (NOT on /data)
 
 Important constraints:
 - `hosts/sam-4screen-desktop/hardware-configuration.nix` is currently a placeholder.
@@ -35,7 +37,7 @@ Important constraints:
 3) Commit your changes:
    - `git status`
    - `git add -A`
-   - `git commit -m "chore: prep install guide + dotfiles links"`
+   - `git commit -m "chore: prep install guide + HM config"`
 
 4) Push to Gitea:
    - `git push`
@@ -149,13 +151,19 @@ or:
 3) Verify SSH works (from another machine):
 - `ssh sam@192.168.20.27`
 
-4) Verify /data mounted:
+4) Verify /data mounted (this is for your storage drive and for accessing the config repo if you keep it there):
 - `mount | grep ' /data '`
-- `ls -la /data/home_sam_ubuntu/dotfiles`
 
-5) Home Manager activation:
-- `home-manager` is integrated via NixOS switch; it should apply on rebuild.
-- If dotfiles symlinks fail, confirm `/data` is mounted and the dotfiles paths exist.
+5) Put dotfiles onto the system at ~/dotfiles
+
+Option A (recommended): clone dotfiles repo:
+- `git clone <your-dotfiles-repo-url> ~/dotfiles`
+
+Option B: copy from Integral300 if they currently only live there:
+- `cp -a /data/home_sam_ubuntu/dotfiles ~/dotfiles`
+
+6) Verify dotfiles exist:
+- `ls -la ~/dotfiles`
 
 ---