feat(themes): kiln + kiln-clay — the third exclusive pair, brand new

Completes the three dark/light pairs for v1 (batch: 0ba1762, e51c8a7).
Kiln is a potter's workshop at night, lit only by the kiln: warm
near-black (#1D1815), copper accent (#D68C5C, 6.5:1), brass accentAlt,
CaskaydiaCove, rounding 8. Kiln Clay is the same studio at midday:
cream plaster (#F4EDE3), espresso text (11.1:1 AAA), fired-copper
accent (#A34F1F, 4.89:1), brick-red bad. Both waybars are a NEW
whole-swap identity — 'the workbench': ONE continuous floating plank
(window#waybar carries the surface, modules transparent) — deliberately
distinct from boreal's three pills and slate's edge-to-edge strip;
module set verbatim-parity with the generated config. Matched rofi,
btop themes. The wallpapers share identical ring geometry — banked-coal
heat rings at night, terracotta glaze rings at noon — so the autoTheme
flip visibly rhymes.

Sync sweep in this commit (LOOP §5): README 24->28 presets + the
whole-swap list now names the three pairs; CONVENTIONS waybar parity
list gains the four new slugs; OVERRIDES autoTheme table points at the
pairs; HARDWARE-QUEUE gains the batch V3 entry (real-GL blur, btop
visual, launcher grid, tray menus, pair flip); BACKLOG files #153
(PROPOSED: per-theme desktop widgets — the conky idea, engine spike
needed, not v1).

Verification: V2. Full targeted set green on the final tree:
theme-contrast, theme-wholeswap (previews + backgrounds + CSS
self-containment), waybar-language, waybar-swap-env, rofi-text-width,
state-sync-validate, auto-theme VM; nix flake check --no-build green.
Visual protocol: theme-shot VM desktop + menu viewed for BOTH themes
(plank renders as one island, copper/terracotta semantics, legible
menus; /nix/store/2fizd945...theme-shot-kiln and
/nix/store/0126yd48...theme-shot-kiln-clay). audit-theme-design:
CVD-only findings (≤ executive-slate's own baseline); ANSI slots
in-family after the magenta retune. V3 pending: HARDWARE-QUEUE entry
above. btop visual is VM-blocked (GL terminal never starts under
softGL) — file-level assertions only, listed for hardware.

Design + wallpapers on Fable; assets by a Sonnet subagent to a written
identity spec; reviewed on Fable.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

README.md

@@ -36,7 +36,7 @@ Flat on purpose. Two module trees, one options file each, no hidden layers.
 ├── flake.nix                      # inputs + the downstream API (exports below)
 ├── lib.nix                        # nomarchy.lib.mkFlake — one-call downstream wrapper
 ├── state.json               # ★ THE single source of truth (git-tracked!)
-├── themes/                        # 24 presets: <slug>.json + optional <slug>/ assets
+├── themes/                        # 28 presets: <slug>.json + optional <slug>/ assets
 │   ├── nord.json                  #   palette (required, works alone)
 │   └── nord/                      #   assets (optional, fixed filenames)
 │       ├── backgrounds/           #     wallpapers (pinned nomarchy-wallpapers input, not this repo)
@@ -440,8 +440,9 @@ per theme — a single place to look, unlike the old distro's split:
 | `waybar.jsonc` | whole-swap for the bar *layout* (must be plain JSON) |
 | `rofi.rasi` | **whole-swap**: replaces the generated launcher/menu theme entirely |
 
-Four themes ship a `waybar.css` identity (summer-day, summer-night,
-executive-slate, boreal). Custom user themes can live in
+Eight themes ship a `waybar.css` identity: the three Nomarchy-exclusive
+day/night pairs — boreal ↔ boreal-dawn, executive-slate ↔ executive-ivory,
+kiln ↔ kiln-clay — plus summer-night ↔ summer-day. Custom user themes can live in
 `$NOMARCHY_PATH/themes/` (preset lookup) and `nomarchy.themesDir` (eval-time
 asset probe) — including their own `backgrounds/`, which wins over the
 pinned `nomarchy-wallpapers` input (checked first); an explicit `wallpaper`
@@ -450,7 +451,7 @@ path in `state.json` works too.
 ## 5. Day-to-day
 
 ```sh
-nomarchy-state-sync list               # 24 presets (nord, gruvbox, rose-pine, …)
+nomarchy-state-sync list               # 28 presets (nord, gruvbox, rose-pine, …)
 nomarchy-state-sync apply kanagawa     # whole desktop, one generation (~a switch)
 nomarchy-state-sync set ui.gapsOut 16  # tweak one knob (also a switch)
 nomarchy-state-sync bg next            # cycle wallpapers — instant, no rebuild