doxify: inject DOX framework into AGENTS.md and update system config docs

- Inject all 10 DOX sections into root AGENTS.md (Core Contract, Read Before
  Editing, Update After Editing, Hierarchy, Child Doc Shape, Style, Closeout,
  User Preferences, Child DOX Index)
- Update ADR 0002: linux612->linux618, 575xx->580xx NVIDIA migration
- Update setup.md: kernel/driver refs to current linux618 + 580xx
- Update stack.md, hardware-inventory.md: NVIDIA note 595.71->580xx
- Update manual-overrides.md: add br_vm_internal bridge deletion entry
- Update workstation-health.md: add Recent Cleanup section
- Update README.md: current software versions, expand roles list
- Add docs/neovim-cheatsheet.md
- Bump last_updated to 2026-06-17 on all modified docs

docs/tech/setup.md

@@ -5,7 +5,7 @@ tags:
   - setup
   - bootstrap
   - ansible
-last_updated: '2026-05-20'
+last_updated: '2026-06-17'
 ---
 
 # Workstation Setup Guide
@@ -44,8 +44,8 @@ This guide describes how to bootstrap the **mw-pfeddersheim-workstation** infras
 4. **Run system upgrade & kernel install** (preparation for Hyprland/Wayland)
 
    This step runs the dedicated `system-upgrade` role: full `pacman -Syu`,
-   dual-kernel install (`linux612` LTS + `linux70` stable), and NVIDIA
-   driver migration from the pinned `575xx` branch to mainline `595.71`.
+   dual-kernel install (`linux618` LTS + `linux70` stable), and NVIDIA
+   driver migration from the pinned `575xx` branch to `580xx` (NVIDIA Fast Branch).
    Always preview first with `--check`. See
    [ADR 0002](../adr/0002-kernel-and-nvidia-strategy.md) for the rationale.
 
@@ -63,7 +63,7 @@ This guide describes how to bootstrap the **mw-pfeddersheim-workstation** infras
 
    After it finishes, **reboot and select `linux70` from the GRUB menu**
    before continuing to step 5. Verify with `uname -r` (expect 7.0.x)
-   and `nvidia-smi` (expect driver 595.71.05).
+   and `nvidia-smi` (expect driver 580.x).
 
 5. **Run the Playbook** (remaining roles: common, dev-tools, maintenance)
    ```bash