feat(landing): join-flow rework, player rosters, account page, mod list

Execute plan/18 (WS1-6) + plan/17.

- WS1: homepage join = 3 steps off packwiz (register -> UlicraftLauncher
  -> join); per-OS downloads from a synced launcher-manifest.json (schema +
  example committed); Fjord moved to its own /fjord page. Drop packwizUrl.
- WS2/3: mc-status gains an isolated /players endpoint (admin login ->
  Drasl GET /players, own client+TTL+token cache, never blocks the status
  path); online + registered rosters render shared name+avatar tiles;
  AVATAR_MODE env (default headiso).
- WS4: /account skin CRUD via browser-direct Drasl (login -> upload ->
  reset), in-memory token, players[0]; register relinks "Manage it here".
- WS5: footer link to status.${BASE_DOMAIN} in every footer.
- WS6: tooling/build-modlist.py generates mods.json + extracted logos from
  the distribution forgemods; ModList.astro renders a flat list; stat tile
  fed from the count.

Manifest/mods loaders read at build with a process.cwd() fallback (the
import.meta.url-only path does not resolve in Astro's bundled build).

New env: AVATAR_MODE, DRASL_ADMIN_USERNAME, DRASL_ADMIN_PASSWORD (mc-status
only). Generated mods.json / launcher-manifest.json / logos are gitignored;
.example.json files document the shapes. Build: 12 pages; mc-status builds.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker-compose.yml

@@ -174,6 +174,14 @@ services:
     environment:
       MC_STATUS_TARGET: "minecraft:25565"
       MC_STATUS_CACHE_TTL: "30s"
+      # Registered-players roster (/api/mcstatus/players). mc-status logs into
+      # the Drasl admin API server-side and exposes a sanitized [{uuid,name}]
+      # list; these creds NEVER reach the browser. Use a dedicated, rotatable
+      # admin account. Isolated from the status pinger (own TTL/client).
+      DRASL_API_URL: "http://drasl:25585/drasl/api/v2"
+      DRASL_ADMIN_USERNAME: ${DRASL_ADMIN_USERNAME}
+      DRASL_ADMIN_PASSWORD: ${DRASL_ADMIN_PASSWORD}
+      MC_STATUS_ROSTER_TTL: "60s"
     networks:
       - mcnet