feat: initial project structure

- CLAUDE.md project passport
- Agent system prompts (architect, developer, reviewer, tester, deployer)
- Gitea Actions CI pipeline (lint, test, build)
- Docker configuration (Dockerfile, docker-compose.yml)
- Canonical directory structure per BRD
- Makefile with dev/test/lint/build/deploy targets
- Architecture docs skeleton

Refs: multi-agent F0-3, F0-5, F0-6, F0-8

docs/README.md

@@ -0,0 +1,8 @@
+# Документация Enduro Trails
+
+## Навигация
+- [architecture/](./architecture/) — архитектура, ADR, диаграммы
+- [work-items/](./work-items/) — артефакты по задачам
+- [design/](./design/) — дизайн-токены, компоненты
+- [operations/](./operations/) — runbook, мониторинг
+- [api/](./api/) — OpenAPI спецификация