Initialize project structure with core files, environment settings, and basic configurations

Co-authored-by: Copilot <copilot@github.com>

charactergarden/app/src/types.ts

@@ -0,0 +1,76 @@
+// Core contracts — DO NOT modify without updating project.md
+
+// ── Section 2.1 ─────────────────────────────────────────────
+export interface Entity {
+  id: string;
+  type: string;
+  name: string;
+  attributes: Record<string, unknown>;
+}
+
+// ── Section 2.2 ─────────────────────────────────────────────
+export const ALLOWED_VERBS = [
+  "move",
+  "open",
+  "close",
+  "take",
+  "drop",
+  "use",
+  "inspect",
+  "speak",
+] as const;
+
+export type Verb = (typeof ALLOWED_VERBS)[number];
+
+export interface Action {
+  actor: string;   // entity id
+  verb: Verb;
+  target?: string; // entity id
+  params?: Record<string, unknown>;
+}
+
+// ── Section 2.3 ─────────────────────────────────────────────
+export interface ValidationResult {
+  accepted: Action[];
+  rejected: { action: Action; reason: string }[];
+  state_changes: StateChange[];
+}
+
+// ── Section 2.4 ─────────────────────────────────────────────
+export interface StateChange {
+  entity_id: string;
+  field: string;
+  old_value: unknown;
+  new_value: unknown;
+}
+
+// ── Section 2.5 ─────────────────────────────────────────────
+export interface GameEvent {
+  id: string;
+  turn: number;
+  action: Action;
+  result: "success" | "fail";
+  timestamp: number;
+}
+
+// ── Section 4 — Memory types ─────────────────────────────────
+export interface Turn {
+  id: string;
+  turn: number;
+  input: string;
+  output: string;
+  timestamp: number;
+}
+
+export interface Belief {
+  entity_id: string;
+  claim: string;
+  confidence: number;
+}
+
+export interface Summary {
+  id: string;
+  turn_range: [number, number];
+  text: string;
+  timestamp: number;
+}