docs(60): point-of-use corrections from the 2026-10-20 review

Measured fixes, one line each, from the review of everything that landed on
2026-10-20 (issue #60). Each page keeps its own facts; nothing was moved.

- inventory/index, index: the census blurb says what the page actually covers
  (tracked-vs-box-only per file), not "all userspace configuration"
- dotfiles-deploy: the wallpaper re-fetch recipe resolves the CDN URL through
  the wallhaven API — /w/<id> answers text/html, so curl -L never yields a
  JPEG; description widened to the whole page, tools/index blurb matched
- okf-maintenance: the link example and the mistake bullet now agree with
  okf-spec, which RECOMMENDS absolute bundle paths (they said the opposite)
- decisions/index: the unlisted-page gate is kb-coverage.py, not kb-lint
- AGENTS.md: the three skill-config subsections are pointers again; the pages
  own issue tracker, labels and domain docs
- swayidle-lock.service: Description names what the unit does (arms the idle
  lock over noctalia-shell IPC); suspend belongs to noctalia's inhibitor
- common.pkgs: git-lfs re-justified by the tracked .gitattributes filter
  contract; the swayidle comment drops its lid-policy claim

AGENTS.md

@@ -94,19 +94,16 @@ knowledge base. Those pages own their facts; this is only the pointer.
 
 ### Issue tracker
 
-Work items are Gitea issues on `dank/command-center` (Dankclaw,
-`192.168.0.143:3000`) — no `gh`, no `tea`. See
-[`omp-docs/skills/issue-tracker.md`](omp-docs/skills/issue-tracker.md).
+See [`omp-docs/skills/issue-tracker.md`](omp-docs/skills/issue-tracker.md).
 
 ### Triage labels
 
-The five canonical roles, each label string equal to its name. See
-[`omp-docs/skills/triage-labels.md`](omp-docs/skills/triage-labels.md).
+See [`omp-docs/skills/triage-labels.md`](omp-docs/skills/triage-labels.md).
 
 ### Domain docs
 
-Single-context, inside the existing knowledge base: `omp-docs/glossary.md` and
-`omp-docs/decisions/`. See [`omp-docs/skills/domain-docs.md`](omp-docs/skills/domain-docs.md).
+ADRs: `omp-docs/decisions/`. `omp-docs/glossary.md` is intentionally not created.
+See [`omp-docs/skills/domain-docs.md`](omp-docs/skills/domain-docs.md).
 
 ## Secret gate (HARD rule)