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AGENTS.md

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+# AGENTS.md
+
+## Project
+
+Nox — Unity 6 party-based RPG. Code lives under `Assets/Code/` with namespaces `Nox.Core`, `Nox.Game`, `Nox.Input`, `Nox.Platform`, `Nox.Util`. In-house packages under `Packages/com.jovian.*` are first-party code, not third-party.
+
+## Unity & Tools
+
+- **Unity**: 6000.3.7f1 (C# 9.0, .NET Framework 4.7.1)
+- **URP**: 17.3.0
+- **Input System**: 1.18.0 (com.unity.inputsystem)
+- **Editor only** — no CI/CD, no CLI build command. Build via Unity Editor → Windows target `Nox.exe`.
+- **Solution**: `trail-into-darkness.sln` at root. Rider is primary IDE (`com.unity.ide.rider`).
+
+## Boot Sequence
+
+1. `Boot.cs` `[RuntimeInitializeOnLoadMethod]` loads `"Initializer"` addressable prefab (or `"Startup"` scene in FullBoot mode)
+2. `EntryPoint.Start()` coroutine initializes platform, creates game states, adds `GameStateRunner` MonoBehaviour
+3. `GameStateRunner` ticks current state: `SplashGameState` → `MainMenuGameState` → `GameModeGameState`
+
+Editor-only: `BootMode.cs` (`Nox.EditorCode`) controls boot mode (Full Boot, Scene Boot, Unity Default).
+
+## State Architecture
+
+Dual-layer state:
+- **Game States** (`IGameState`): Application flow. Lifecycle: `EnterGameState()` → `Tick()`/`LateTick()` → `ExitGameState()` → `Dispose()`
+- **Play Modes** (`IPlayMode`): GameModes inside `GameModeGameState`. Same tick lifecycle.
+
+Central store: `GameDataState` holds `ActiveGameState`, `ActivePlayMode`, `ActiveParty`, `platformSelector`, `activeSessionId`.
+
+Scene authoring: `SceneReference` MonoBehaviour per scene sets initial `GameState`. Enables standalone scene playback in editor.
+
+## Addressable Keys
+
+Assets loaded by string key. Do not change keys without checking all callers: `"Initializer"`, `"AdventureMapPrefabs"`, `"PauseMenuPrefabs"`, `"AdventureSettings"`, `"CharacterBaseSettings"`, `"PerkRegistry"`, `"CharacterRegistry"`, `"BootstrapReferences"`.
+
+## Character System
+
+Factory chain initialized from ScriptableObjects: `CharacterSystemsFactory.Create()` builds `PerkFactory` → `CharacterAttributesFactory` → `CharacterStatsFactory` → `CharacterFactory` → `PartyFactory`. Config loaded via Addressables.
+
+## Persistence
+
+`Jovian.SaveSystem` package handles JSON serialization to `Application.persistentDataPath`. Nox wrapper: `NoxSaveData.RestoreSavedData()` loads `NoxSavedDataSet` (playMode, party, position, adventure data, game log). Save slots managed by `SaveSlotManager`.
+
+## Platform Abstraction
+
+`IPlatform` interface with `DesktopPlatform` and `UnityEditorPlatform` implementations. Each initializes platform-specific `IInput`. Switched via `PlatformSelector`.
+
+## In-House Jovian Packages
+
+- `com.jovian.savesystem` — JSON persistence
+- `com.jovian.encounter-system` — data-driven encounters, `IEncounterKind` payloads, `EncounterLink` refs, `QuestProgress` gating. Designer tool: `Jovian → Encounters → Encounter Browser`
+- `com.jovian.calendar` — in-game calendar
+- `com.jovian.ingame-logging` — runtime game log
+- `com.jovian.popup-system` — popup/dialog UI
+- `com.jovian.zonesystem` — zone/region management
+- `com.jovian.logger` — dev logging
+- `com.jovian.utilities` / `com.jovian.inspector-tools` — editor utilities
+
+## C# Style (from .editorconfig)
+
+- 4 spaces, LF endings
+- `var` preferred when type is apparent
+- Target-typed `new()` when type is evident
+- No space after keywords in control flow: `if(` not `if (`
+- Braces on same line; `else`/`catch`/`finally` on new line
+- Block-scoped namespaces, usings outside namespace
+- PascalCase types/methods/properties, camelCase all fields (public and private), `I` prefix interfaces
+- Expression-bodied: yes for properties/accessors/lambdas; no for constructors/methods/operators/local functions
+- No `this.` qualifier; language keywords (`int` not `Int32`)
+
+## Planning Docs
+
+Non-trivial features planned in `docs/plans/` as paired files: `{date}-{name}-design.md` + `{date}-{name}-implementation.md`. Check here before starting new feature work.
+
+## Gotchas
+
+- No test suite exists despite `com.unity.test-framework` in manifest
+- No runtime build/lint/typecheck commands — all validation happens in Unity Editor
+- Generated `.csproj` files are Unity output, not source of truth for assembly structure
+- `Assets/Code/` is the only code location to modify; never edit `Packages/com.jovian.*` core unless working on that package