Bootstrap Pilgrims of Katan: rebrand, Gitea CI and OTA

Import of ProLibertateGames (upstream main, GPL-3.0) rebranded for
Wallacenet and repointed at git.wallacenet.ca.

- Identity: applicationId ca.wallacenet.pilgrimsofkatan (+ .dev for the dev
  channel), launcher names "Pilgrims of Katan" / "Pilgrims of Katan DEV",
  neutral hexagon branding replacing the Wallace tartan. Uncial Antiqua keeps
  its OFL licence, and the GPL-3.0 LICENSE plus upstream attribution stay.
- OTA: Updater.kt now reads this repo's own Gitea releases
  (/api/v1/repos/devadmin/PilgrimsOfKatan/releases...) and BuildConfig.
  OTA_ENABLED is on; Gitea answers the same JSON shape the code already parsed.
- Build numbers: versionCode = CI run number + plgVersionRunOffset (1000),
  with the tag and versionName derived from the same figure. The offset is
  permanent, because Gitea Actions restarts run numbers at 1 and a reset would
  otherwise make Android reject the next build as a downgrade.
- CI: ci.yml publishes a dev prerelease from dev, release.yml a production
  release from main, both through scripts/publish-release.sh (Gitea REST API,
  runnable by hand until an Actions runner is registered).
- Docs: docs/CI.md records the channel, numbering and runner decisions;
  docs/README.md seeds the per-game RULES-* conventions; CLAUDE.md carries the
  agent ground rules.

Verified: ./gradlew assembleDebug and testDebugUnitTest green on JDK 17 /
compileSdk 34, both variants stamped, installing side by side under the new
identity.

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

docs/README.md

@@ -0,0 +1,45 @@
+# docs/
+
+Conventions for this repo's documentation. Seeded at bootstrap (WALA-118).
+
+## Per-game rules: `RULES-<game>.md`
+
+Every game in `GameCatalog` gets one file describing how *this app* implements
+it — not a generic rule dump. The rules code
+(`app/src/main/java/org/prolibertate/games/game/<game>/`) is the source of
+truth; the doc exists so a human or an agent can check intent against
+behaviour without reading Kotlin first.
+
+Naming: the catalogue id, lowercase, e.g. `crazy8s` → `RULES-crazy8s.md`.
+
+| Game (catalogue id) | Rules doc |
+| --- | --- |
+| Backgammon | [RULES-backgammon.md](RULES-backgammon.md) |
+| Checkers | [RULES-checkers.md](RULES-checkers.md) |
+| Chess | [RULES-chess.md](RULES-chess.md) |
+| Crazy 8s | [RULES-crazy8s.md](RULES-crazy8s.md) |
+| Cribbage | [RULES-cribbage.md](RULES-cribbage.md) |
+| Euchre | [RULES-euchre.md](RULES-euchre.md) |
+| FreeCell | — (TODO) |
+| Golf | [RULES-golf.md](RULES-golf.md) |
+| Hearts | — (TODO) |
+| Kaiser | [RULES-kaiser.md](RULES-kaiser.md) |
+| Klondike | — (TODO) |
+| Mastermind | [RULES-mastermind.md](RULES-mastermind.md) |
+| Morris | [RULES-morris.md](RULES-morris.md) |
+| Peg solitaire | — (TODO) |
+| Pirates | [RULES-pirates.md](RULES-pirates.md) |
+| President | [RULES-president.md](RULES-president.md) |
+| Pyramid | — (TODO) |
+| Sequence | [RULES-sequence.md](RULES-sequence.md) |
+| Spider | — (TODO) |
+| Ta Yü | [RULES-tayu.md](RULES-tayu.md) |
+| Wizard | [RULES-wizard.md](RULES-wizard.md) |
+| Yahtzee | — (TODO) |
+
+## Other docs
+
+- [CI.md](CI.md) — build, CI, releases, OTA decisions.
+- `licenses/` — third-party licences that must travel with the app
+  (Uncial Antiqua under the SIL OFL; the app itself is GPL-3.0, see `/LICENSE`).
+- Repo-level agent notes live in [`CLAUDE.md`](../CLAUDE.md) at the root.