# Recommended kickoff plan

## 0) Toolchain (lock these down)

* **Python** 3.11 (for wheels availability + perf)
* **Node** 20.19+ and **npm** 10+
* **UV** for deps 
* **Playwright** (later for UI smoke tests)
* **Git** repo from day 1

## 1) Make a tiny, opinionated repo scaffold

Create a new repo (you can copy/paste this tree into your README so the LLM follows it):

```
gspro-remote/
  backend/
    app/
      __init__.py
      main.py           # FastAPI app factory + router mounts
      api/
        __init__.py
        actions.py      # /api/actions/*
        vision.py       # /api/vision/* (keep but V2-gated)
      core/
        config.py       # AppConfig + load/save
        input_ctrl.py   # pydirectinput helpers
        screen.py       # mss capture utils (non-vision bits)
      pkg.json          # (optional) for uvicorn dev script via npm - or just use Makefile
    pyproject.toml
    README.md
  frontend/
    src/
      main.tsx
      App.tsx
      pages/DynamicGolfUI.tsx
      components/
        AimPad.tsx
        StatBar.tsx
        MapPanel.tsx
      styles/
    index.html
    package.json
    vite.config.ts
    README.md
  scripts/
    dev.ps1            # start both servers on Windows
  .editorconfig
  .gitignore
  README.md
```


## 2) Bootstrap bare bones projects

### Backend (FastAPI)

```bash
cd backend
uv venv && uv pip install fastapi uvicorn pydantic-settings pydirectinput pywin32 mss opencv-python pillow zeroconf
# Or with pip:
# python -m venv .venv && .venv\Scripts\activate && pip install fastapi uvicorn pydirectinput pywin32 mss opencv-python pillow zeroconf
```

`app/main.py` (minimal)

```python
from fastapi import FastAPI
from .api.actions import router as actions_router

def create_app() -> FastAPI:
    app = FastAPI(title="GSPro Remote", version="0.1.0")
    app.include_router(actions_router, prefix="/api/actions", tags=["actions"])
    return app

app = create_app()
```

`app/api/actions.py` (just enough to prove the vertical slice)

```python
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from ..core.input_ctrl import press_keys, focus_window

router = APIRouter()

class KeyReq(BaseModel):
    keys: str

@router.post("/key")
def post_key(req: KeyReq):
    if not focus_window("GSPro"):
        raise HTTPException(409, "GSPro window not found/active")
    press_keys(req.keys)
    return {"ok": True}
```

Run:

```bash
uvicorn app.main:app --reload --host 0.0.0.0 --port 5005
```

### Frontend (Vite + React + TS)

```bash
cd ../frontend
npm create vite@latest . -- --template react-ts
npm i
npm run dev
```

Add a `.env` in frontend later if you want a configurable API base URL.

## 3) Migrate your existing code **incrementally**

You already have solid pieces. Bring them in slice by slice:

* Move `config.py` → `backend/app/core/config.py` (keep AppConfig + persistence).
* Move `input_ctrl.py` → `backend/app/core/input_ctrl.py` (unchanged).
* Create `backend/app/api/vision.py` and paste **only** the streaming endpoint you’ll use first (WebSocket or SSE). Keep OCR endpoints behind a `VISION_ENABLED` flag for V2.
* Defer `screen_watch.py`, `capture.py`, `streaming.py` until the “MapPanel” slice (below). It’s okay if V1 ships with **no** OCR.

## 4) Implement one **vertical slice** end-to-end (MVP proof)

Start with the **Aim Pad + Mulligan** because it touches everything:

* Frontend:

  * `components/AimPad.tsx`: buttons call `POST /api/actions/key` with `"left"`, `"right"`, `"up"`, `"down"`, and `"a"` (Reset).
  * Add Mulligan button calling `"ctrl+m"`.

* Backend:

  * The `post_key` route already exists.
  * Make sure `focus_window("GSPro")` works on your machine.

* Test on Windows: you should see GSPro react from the tablet/phone.

Now you have a working remote!

## 5) Add the **MapPanel** as the second slice

* Backend:

  * Introduce a simple `/api/vision/ws/stream` that returns a **downscaled JPEG** buffer of a fixed region; reuse your `mss` capture and JPEG base64 helpers. Keep the code minimal.
* Frontend:

  * `components/MapPanel.tsx` opens a WS to `/api/vision/ws/stream`, paints frames onto a `<canvas>`, supports expand/collapse (no click mapping yet).
* Aim for **720p @ 30fps, \~75–85 JPEG quality**. Measure latency, then optimize resize **before** JPEG encode.

## 6) Wire the rest of the “Essentials”

* Tee left/right (`c`/`v`)
* Scorecard (`t`) and Range finder (`r`) as secondary buttons under a kebab menu
* Stat row at bottom (hard-coded 0.0° up/right for now—wire later)

## 7) Keep OCR as **V2** but leave hooks

* Add a feature flag `VISION_ENABLED = False` in `app/core/config.py`.
* Keep `vision.py` imported but routes gated: if disabled, return 404 with a friendly message.
* This lets you merge OCR work later without reshaping the app.

## 8) Dev ergonomics on Windows

Create `scripts/dev.ps1` to run both servers:

```powershell
Start-Job { Set-Location backend; uvicorn app.main:app --reload --port 5005 }
Start-Sleep -Seconds 1
Start-Process powershell -ArgumentList 'cd frontend; npm run dev'
```

## 9) Packaging (when MVP is stable)

* **Backend**: PyInstaller or Nuitka into a single EXE, then wrap with **Inno Setup** to produce an installer that:

  * Installs the EXE + config files to `C:\ProgramData\GSPro Remote\`
  * Creates a Start Menu entry and an **auto-start shortcut** for the Windows user
  * Opens firewall rule for your port
* **Frontend**: `npm run build` → copy `dist/` into `backend/ui/` and serve using FastAPI `StaticFiles`. (You already had `build-ui.py`; keep that idea.)

## 10) How to use the LLM effectively (so it helps, not hurts)

* **Give it the scaffold** and the **PRD** (and the Section-12 matrix).
* Ask for **one file at a time**: “Implement `components/AimPad.tsx` against `/api/actions/key`” with explicit props and return types.
* Paste back **real compiler/server errors** verbatim; ask it to fix **only those**.
* Freeze the public contracts early (API request/response shapes). LLMs drift if the interface is fuzzy.

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