# Godot 4.6 Migration

This project targets Godot 4.6 as the active editor baseline.

## Current Risk Profile

- The project is a simple Godot 4 `Node2D` application with data-driven JSON content.
- There are no addons, imported art assets, shaders, TileMaps, 3D physics scenes, or export presets yet.
- The current renderer is explicitly set to `gl_compatibility`, so new-project rendering defaults in Godot 4.6 should not silently change the existing project renderer.
- `project.godot` advertises `config/features=PackedStringArray("4.6")`.
- Godot 4.6 script UID sidecar files (`*.gd.uid`) are part of the migrated project metadata and should stay versioned.

## Before Opening In 4.6 From An Older Checkout

1. Create a backup or initialize version control before the editor writes migration changes.
2. Run the data/readiness check:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File tools\check_godot46_readiness.ps1
```

3. If the Godot executable is not on `PATH`, set `GODOT_BIN` for command-line checks:

```powershell
$env:GODOT_BIN = "C:\Path\To\Godot_v4.6-stable_win64.exe"
```

## Editor Migration Steps From An Older Checkout

1. Open the project folder in Godot 4.6.
2. Let the editor import the project and accept any project-file migration prompt.
3. Run `Project > Tools > Upgrade Project Files...`.
4. Save, close, and reopen the project once.
5. Run the readiness check again. If `GODOT_BIN` is set, include the optional headless editor import:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File tools\check_godot46_readiness.ps1 -RunGodotImport
```

## Manual Smoke Test

- Main scene starts without script errors.
- Current campaign save loads or a new campaign starts cleanly.
- Briefing opens and can enter battle.
- Chapters, Shop, Armory, Roster, Formation, and Save open and close; completed or current Chapter entries can open a battle briefing.
- Finite-stock Shop entries show remaining counts and disable once sold out.
- Manual checkpoint save/load restores the expected current briefing without script errors.
- A player unit can move, attack, wait, use a tactic, use an item, and equip compatible gear.
- Poison Mist applies poison, poison ticks at the target team's phase start, and poison defeat immediately ends the battle when it satisfies a victory or defeat condition.
- Enemy turn advances and AI acts.
- Victory and defeat panels still appear.
- Post-battle dialogue and post-battle choices still block progression until a choice is saved.
- Next battle loads with saved roster, inventory, joined officers, and campaign flags.
- New Campaign clears the save and returns to the opening scenario.

## Watch Items

- If the editor updates `config/features`, review the diff before making content changes.
- If UI colors or canvas rendering look different, compare the battle board, overlays, and panels before changing art direction.
- If a save file behaves oddly after migration, test both a fresh campaign and existing `user://campaign_save.json` / `user://campaign_manual_save.json` files.