Restore the Pro Libertate Games title and splash; list Katan under Board Games

The bootstrap rebranded the app to Pilgrims of Katan (WALA-118 review);
the decision is to keep the upstream's own identity instead.

- Title and splash: the upstream originals restored exactly — the Wallace
  tartan splash under the "Pro Libertate Games" uncial wordmark
  (SplashScreen.kt, Tartan.kt), the tartan launcher icon, and the
  Theme.ProLibertateGames window theme. The game screens go back to the
  upstream WallaceGold/WallaceRed accents the tartan is woven from.
- Names and colours: launcher names back to "Pro Libertate Games" /
  "Pro Libertate Games DEV"; the channel colours back to the clan red /
  hunting green setts (resValue tartan_field and friends). The installed
  identity stays ca.wallacenet.pilgrimsofkatan (+ .dev) — that is the
  package, not the brand.
- Catalogue: Katan is listed under Board Games (3-4 players, original
  blurb, no third-party marks) with available = false, so dev builds show
  it as "Coming soon" and a production build hides it until its engine
  and screen land.
- Docs: README/CLAUDE.md/docs/CI.md updated to the restored identity;
  CatalogTest's invariant now names Katan as the one deliberate exception
  rather than asserting nothing is unfinished.

Structural bootstrap untouched: applicationId, OTA repointed at the Gitea
releases, CI workflows, version stamping.

Verified: ./gradlew assembleDebug and testDebugUnitTest green — 628 tests,
0 failures.

Co-Authored-By: Paperclip <[email protected]>

CLAUDE.md

@@ -1,9 +1,9 @@
 # Working on this repo (agent notes)
 
-Pilgrims of Katan — an Android collection of card and board games, playable
-against AI or over Wi-Fi (LAN). Bootstrapped from
+ProLibertateGames — Wallacenet's build of an Android collection of card and
+board games, playable against AI or over Wi-Fi (LAN). Upstream:
 [adrianoftyriel/ProLibertateGames](https://github.com/adrianoftyriel/ProLibertateGames)
-(GPL-3.0, kept as the `upstream` remote) for Wallacenet. Canonical repo:
+(GPL-3.0, kept as the `upstream` remote). Canonical repo:
 <https://git.wallacenet.ca/devadmin/PilgrimsOfKatan>.
 
 ## Ground rules
@@ -11,13 +11,15 @@ against AI or over Wi-Fi (LAN). Bootstrapped from
 - **Licences travel.** `LICENSE` is GPL-3.0 and must stay. The Uncial Antiqua
   font ships with its OFL licence at `docs/licenses/UncialAntiqua-OFL.txt`;
   never delete or edit either. Attribution to the upstream lives in the README.
-- **No Catan trademarks or brand assets**, and none of the upstream's Wallace
-  clan branding (it was removed in the rebrand; see README → Branding). The
-  brand is: *Pilgrims of Katan*, `ca.wallacenet.pilgrimsofkatan` (+ `.dev`),
-  slate blue / dev green, hexagon emblem.
+- **No Catan trademarks or brand assets** — the one hard line. The app's own
+  branding is the upstream's, restored (see README → Branding): tartan launcher
+  icon and splash, Wallace clan red on production and hunting green on dev,
+  launcher names *Pro Libertate Games* / *Pro Libertate Games DEV*. The
+  installed identity is `ca.wallacenet.pilgrimsofkatan` (+ `.dev`).
 - **The existing catalogue is the regression safety net.** Keep every game
-  green; new games (Catan) arrive as separate tasks, not edits to old ones.
-  All 22 games are `available = true`.
+  green; new games (Katan) arrive as separate tasks, not edits to old ones.
+  The 22 reference games are `available = true`; Katan is listed with
+  `available = false` (*Coming soon*) until its game task lands.
 - **Docs conventions**: every game gets `docs/RULES-<id>.md` (index and gaps in
   `docs/README.md`); build/CI/release decisions go in `docs/CI.md`. Update the
   docs when behaviour changes — they are the check against the rules code.