Untrack a retired niri config that was committed as trash; correct two census rows

The repo still tracked `dotfiles/niri/.config/niri/cfg/.AGENTTRASH/display.kdl.superseded`
— a retired output config committed 2026-10-09, five days before `.gitignore` grew the
`.AGENTTRASH/` rule. Tracked-then-ignored: an ignore rule never reaches an already-tracked
path, so `git rm --cached` is the only repair. The working copy joins the rest of today's
tracked debt.

Found while answering "does this repo still track my noctalia and niri settings", which
also falsified two rows of the census committed yesterday: niri is 9 tracked files, not
12; noctalia is 3 authored files against 2672 files of app state and downloaded catalog,
not 2/0. The page's own classifier command reproduces the new numbers — it never
reproduced the old ones, which is the only reason they were wrong and not merely
different.

Two laws recorded alongside, both from the same probe: `config.kdl`'s
`include "noctalia.kdl"` is not `optional=true`, so a fresh box cannot start niri until
the theme pipeline has run once; and `cfg/display.kdl -> desk-1-home.kdl` is desk state a
fresh box does not receive — by design, but nowhere written down.

Refs #40

omp-docs/inventory/home-config-census.md

@@ -83,8 +83,8 @@ by category, not file-by-file.
 | micro | 0 | 154 | adopt: `settings.json`, `bindings.json`; generated: `colorschemes/noctalia.micro`; bundled/state: `syntax/*` (146), `buffers/history` |
 | mpv | 0 | 0 | — (empty) |
 | nautilus | 0 | 0 | — (empty) |
-| niri | 12 | 1 | `noctalia.kdl` (generated) |
-| noctalia | 2 | 0 | — |
+| niri | 9 | 1 | 8 live KDL includes (5 from `dotfiles/niri`, 3 overridden by the `zz-blankpad` tier, whose own 9 niri files are counted in that tier) + 1 tracked relic, see *Never track*. Box-only: `noctalia.kdl`, a generated include — [tools/dotfiles-deploy](/tools/dotfiles-deploy.md) |
+| noctalia | 3 | 2672 | Tracked and live-linked: `config.toml`, `palettes/Gruber Red.json`, `state/noctalia/settings.toml`. Everything else is app state plus noctalia's downloaded catalog: `community-palettes/` 66, `community-templates/` 80, `wallhaven/thumbs`, `clipboard/`, `plugins/`, `state.toml`, `usage_counts.json`. The 23 wallpapers #41 untracks stay on disk — the theme reads them |
 | nvim | 0 | 0 | — (empty) |
 | pywalfox | 0 | 1 | `config.json` — program absent, prune |
 | qt5ct | 0 | 1 | `colors/noctalia.conf` (generated) — program absent, prune |
@@ -138,6 +138,7 @@ configs).
 | **App state / profiles** | `mozilla` (5471), `unity3d` RimWorld state (235), `nirimod` (116), `obsidian` (99), `FreeTube` (56), `google-chrome-for-testing` (5); plus per-program state inside tracked dirs: `dconf/user`, `fish/fish_variables`, `micro/syntax/*`+`micro/buffers/history`, `gtk-4.0/servers`, `cachyos/cachyos-hello.log`. |
 | **Skills-CLI installs** | `crush` (37), `devin` (37), `goose` (37), `kimchi/harness` (37) skill trees — provisioned by the skills CLI, owned by the store, not this repo. See [skills/store-wiring](/skills/store-wiring.md). |
 | **Secret tier** | `~/.config/secrets/` (`gitea`, `hf_token`, `hf_token_write`, `kagi_api_key` — names only), top-level `frank-job-hunt.env`, `containers/systemd/postgres.env`. Never tracked, values never printed. |
+| **Trash committed inside the tree** | `dotfiles/niri/.config/niri/cfg/.AGENTTRASH/display.kdl.superseded` — a retired output config committed 2026-10-09, five days before `.gitignore:54` gained `.AGENTTRASH/` (2026-10-14). Tracked-then-ignored: an ignore rule never reaches an already-tracked path, so the only repair is `git rm --cached`, done by #41. The rule does match at depth — `git check-ignore --no-index -v dotfiles/niri/.config/niri/cfg/.AGENTTRASH/x` resolves to `.gitignore:54` — so a fresh in-tree trash dir is ignored from birth and this does not recur on its own. |
 
 ## Owned-elsewhere (do not adopt here)