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/pi/packages/pi-web-access.md

@@ -131,7 +131,7 @@ fetch_content({ url: "https://example.com/paper.pdf" })
 sudo pacman -S ffmpeg yt-dlp
 ```
 
-Without these, video analysis (transcripts, visual descriptions via Gemini) still works. Frame extraction requires ffmpeg and yt-dlp. Both are installed on dankware (verified 2026-08-28: ffmpeg n9.0.1, yt-dlp 2026.08.19).
+Without these, video analysis (transcripts, visual descriptions via Gemini) still works. Frame extraction requires ffmpeg and yt-dlp. Both are installed on the workstation (verified 2026-08-28: ffmpeg n9.0.1, yt-dlp 2026.08.19).
 
 GitHub URLs get special handling: `fetch_content` clones the repo locally instead of scraping HTML (root URL returns tree + README, `/blob/` returns file contents). Repos over 350 MB get an API-based view; `forceClone: true` overrides. Clones cache per session under `/tmp/pi-github-repos` and wipe on session change. Private repos need the `gh` CLI. Disable with `githubClone.enabled: false`.