update rules

.gitignore

@@ -3,3 +3,5 @@ obj/
 /packages/
 riderModule.iml
 /_ReSharper.Caches/
+.idea/.idea.GymLogAI/.idea/indexLayout.xml
+.idea/.idea.GymLogAI/.idea/vcs.xml

AGENTS.md

@@ -0,0 +1,50 @@
+# AGENTS.md
+
+Shared rules for all AI agents working in this repository.
+
+## Tech Stack
+
+- **.NET 10.0** — ASP.NET Core minimal APIs
+- **C#** — primary language
+- **Docker / Docker Compose** — containerization
+
+## Commands
+
+```bash
+# Build
+dotnet build
+
+# Run (development)
+dotnet run --project GymLogAI.API/
+
+# Run with HTTPS profile
+dotnet run --project GymLogAI.API/ --launch-profile https
+
+# Docker Compose
+docker compose -f compose.yaml up --build
+```
+
+No test project exists yet. When one is added, the command will be `dotnet test`.
+
+## Project Structure
+
+```
+GymLogAI.sln
+GymLogAI.API/
+  Program.cs          # entry point, minimal API endpoint registration
+  appsettings*.json   # environment-specific config
+  Dockerfile          # multi-stage build (SDK 10 → Runtime 10)
+compose.yaml          # Docker Compose orchestration
+```
+
+## Architecture
+
+- Minimal API pattern — endpoints registered directly in `Program.cs`
+- Ports: HTTP 5202 (local), HTTPS 7225 (local); 8080/8081 inside Docker
+- OpenAPI enabled via `Microsoft.AspNetCore.OpenApi`
+
+## Conventions
+
+- Keep endpoints in `Program.cs` until the project grows enough to warrant endpoint groups or controllers
+- Use records for DTOs
+- Follow existing `appsettings.json` / `appsettings.Development.json` split for environment config

CLAUDE.md

@@ -0,0 +1,11 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+> All shared rules (commands, architecture, conventions) live in [AGENTS.md](AGENTS.md) and apply here as well.
+
+## Claude Code–Specific Notes
+
+- This is a greenfield project — the `WeatherForecast` endpoint in `Program.cs` is a template placeholder and can be replaced entirely.
+- There is no database, auth, or domain layer yet; add these incrementally as features are defined.
+- REST Client test file: `GymLogAI.API/GymLogAI.API.http` — keep it updated when endpoints change.