docs: purge the retired workstation from the knowledge base

Second half of the purge (the first covered the persona, AGENTS.md, README.md,
and the distillation of the per-host pages). Every remaining identifier is
gone: hostname, both LAN addresses, and the Wi-Fi SSID.

34 count-checked substitutions across 22 files — indexes, tool/research pages,
the inventory census, the changelog, one generated HTML report, and five
managed skills. Facts kept, names dropped: a history entry keeps its four-page
listing as a nameless summary, the syslog excerpts keep every timestamp and
line, and the census keeps the .zcompdump rows (the zsh version stamps are the
useful part, the hostname was not).

Deliberately unchanged: install.sh's --host case list and the
packages/<hostname>.pkgs filename, where the hostname is the lookup key.

Left out of scope by Frank's call: agent/memories/** — past-session records the
learn pipeline rewrites.

kb-lint: 0 violations. Residual grep for the hostname, its two IPs, and the
SSID across omp-docs/ and agent/managed-skills/: no hits.

omp-docs/tools/cachyos.md

@@ -1,7 +1,7 @@
 ---
 type: reference
 title: CachyOS
-description: Arch-based rolling release with performance-optimized kernels, repositories, and gaming stack. Running on dankware.
+description: Arch-based rolling release with performance-optimized kernels, repositories, and gaming stack. Running on the workstation.
 tags:
   - cachyos
   - arch
@@ -106,7 +106,7 @@ CachyOS with Niri ships with a curated set of applications:
 
 ## See Also
 
-- ](../system/index.md) — dankware overview
+- ](../system/index.md) — system overview
 - [niri](niri/index.md) — Compositor documentation
 - [[noctalia-shell|noctalia-shell]] — Desktop shell documentation
 - [[applications|applications]] — Application reference