## Important Files

- The Unreal Engine source for this project lives at `/home/jyelon/integration.UE` (sibling to the project dir), not `~/UnrealEngine`.
- Many of Unreal's basic data types (FString, TArray, TSet, TMap, etc.) are in `integration.UE/Engine/Source/Runtime/Core/Public/Containers/`.
- Editor log files are at `integration/User/jyelon/Saved/Logs/`.

## Critical: Minimize Diff Noise

- The user reviews all changes via `git diff` in VS Code. Every unnecessary diff line costs review time.
- **Preserve all existing comments.** Comments describe the logic, not the syntax — they survive refactors. Only remove a comment if the code it described was genuinely deleted.
- **Don't rename variables, reorder code, or reformat lines** unless directly required by the task. If a variable name works, leave it. If a comment is in the right place, don't move it.
- Don't make gratuitous changes. If it doesn't need to change, don't touch it.

## Coding Style Preferences

- **NO GLOBALLY SCOPED STATIC FUNCTIONS in Unreal code.** Use class methods or namespace-scoped functions instead. This is a hard rule — the user has corrected this multiple times.
- Prefer in-class member initializers (`int x_ = 0;` in the header) over explicit initialization in constructor bodies. When touching constructors, migrate toward this style.
- Inline empty constructors/destructors in the header when possible.
- Avoid ternary operator unless very concise (e.g., `x ? 1 : 0`). For longer expressions, use early-return `if` instead.
- When asked for a small change, do exactly that. If it turns out to require broader refactoring, STOP and explain the situation instead of silently rewriting the module.

## Tools

- `tools/clangd-query.py` — Query clangd for C++ symbols.
  - `python3 tools/clangd-query.py symbol <name>` — Find symbols by name across the whole project.
  - `python3 tools/clangd-query.py definition <file> <line> <col>` — Go to definition
  - `python3 tools/clangd-query.py references <file> <line> <col>` — Find all references
  - `python3 tools/clangd-query.py diagnostics <file>` — Get errors/warnings for a file.
  - `python3 tools/clangd-query.py stop` — Stop the daemon.
  - Prefer this over grep when looking for C++ class/function definitions or references.

- Use `build.py c++` for lightweight C++ rebuilds, `build.py all` for full rebuilds.

- VS Code is the IDE. Use `code --goto <filename>:<line>` to open files.

## MCP

The UE Wingman plugin for unreal allows you to control the unreal editor.