fix(audit): close all missing-references rows in script audit

The audit's "missing references" table held 15 rows — 2 real doc bugs and
13 grep false-positives — making Pillar 3 Phase B triage noisier than it
needed to be.

- Wrote themes/engine/scripts/nomarchy-theme-next so SKILL.md's documented
  "cycle to next theme" command actually resolves.
- Scrubbed three stale `nomarchy-dev-*` references from SKILL.md (skill
  frontmatter, body, and Out-of-Scope list) — they hallucinated a workflow
  that doesn't exist and broke AI-assisted use of the skill.
- Added a line-context filter to both nomarchy-docs-scripts generators
  that drops `nomarchy-*` tokens appearing in Nix pname/derivation idents,
  /tmp/ and /etc/sudoers.d/ paths, nixosConfigurations.* / packages.*
  flake outputs, mktemp -t prefixes, systemd unit vars, ./result/bin/run-
  binaries, and docker container references.
- Added a small token-level denylist for five residual non-script
  identifiers (nomarchy-plymouth, nomarchy-sddm-theme, nomarchy-live,
  nomarchy-rev, nomarchy-windows) that survive line filtering because
  they appear as bare Nix list refs, comment backticks, or compose-heredoc
  identifiers.

Regenerated docs/SCRIPTS.md; the "Missing references" section is now
empty. Logged in docs/ROADMAP.md Shipped.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

core/home/config/nomarchy-skill/SKILL.md

@@ -8,7 +8,7 @@ description: >
   monitors, gaps, borders, blur, opacity, waybar, walker, terminal config, themes,
   wallpaper, night light, idle, lock screen, screenshots, layer rules, workspace
   settings, display config, and user-facing nomarchy commands. Excludes Nomarchy
-  source development in ~/.local/share/nomarchy/ and nomarchy-dev-* workflows.
+  source development in ~/.local/share/nomarchy/ and repo-internal workflows.
 ---
 
 # Nomarchy Skill
@@ -34,7 +34,7 @@ It is not for contributing to Nomarchy source code.
 
 **If you're about to edit a config file in ~/.config/ on this system, STOP and use this skill first.**
 
-**Do NOT use this skill for Nomarchy development tasks** (editing files in `~/.local/share/nomarchy/`, creating migrations, or running `nomarchy-dev-*` workflows).
+**Do NOT use this skill for Nomarchy development tasks** — editing files in `~/.local/share/nomarchy/` or modifying repo internals.
 
 ## Critical Safety Rules
 
@@ -352,7 +352,7 @@ When user requests system changes:
 This skill intentionally does not cover Nomarchy source development. Do not use this skill for:
 - Editing files in `~/.local/share/nomarchy/` (`bin/`, `config/`, `default/`, `themes/`, `migrations/`, etc.)
 - Creating or editing migrations
-- Running `nomarchy-dev-*` commands
+- Modifying Nomarchy's own source tree
 
 ## Example Requests