Initial release: Disc Agenda frisbee tournament platform

Full-stack tournament management app with real-time scoring:
- Go 1.26 backend with REST API and WebSocket live scoring
- React 19 + Vite 8 frontend with mobile-first design
- File-based JSON storage with JSONL audit logs
- Multi-stage Docker build with Gitea CI/CD pipeline
- Post-tournament questionnaire with spirit voting
- Technical documentation and project description

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

data/tournaments.json

@@ -0,0 +1,25 @@
+[
+  {
+    "id": "fujarna-14-3-2026",
+    "name": "Fujarna - 14.3.2026",
+    "status": "upcoming",
+    "location": "Praha, Czech Republic",
+    "venue": "Víceúčelové sportoviště \"Kotlářka\"",
+    "start_date": "2026-03-14",
+    "end_date": "2026-03-14",
+    "description": "Fujarna turnaj v ultimate frisbee. 10 týmů ve 2 skupinách, crossover pavouk.",
+    "teams": [
+      {"id": "fuj-1", "name": "FUJ 1"},
+      {"id": "kocicaci", "name": "Kočičáci"},
+      {"id": "spitalska", "name": "Špitálská"},
+      {"id": "sunset", "name": "Sunset"},
+      {"id": "hoko-coko-diskyto", "name": "Hoko-Čoko Diskýto"},
+      {"id": "fuj-2", "name": "FUJ 2"},
+      {"id": "bjorn", "name": "Björn"},
+      {"id": "gybot", "name": "GyBot"},
+      {"id": "poletime", "name": "Poletíme"},
+      {"id": "kachny", "name": "Kachny"}
+    ],
+    "rules": "Hra 20 min. Bez pauzy. Bez TO. Remíza není možná."
+  }
+]