Phase 1: add state factories — predictable session bootstrap.

createInitialState and createRuntimeFlags return SPEC §6.1 defaults
before load, detect, and settings merge on session_start.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/state.ts

@@ -30,3 +30,20 @@ export interface RuntimeFlags {
 	autoCompactDetected: boolean;
 	autoCompactIntegration: AutoCompactIntegration;
 }
+
+export function createInitialState(): ExtensionState {
+	return {
+		version: 1,
+		sessionOverride: null,
+		skills: [],
+		lastCompactionSource: null,
+		pendingReinject: [],
+	};
+}
+
+export function createRuntimeFlags(): RuntimeFlags {
+	return {
+		autoCompactDetected: false,
+		autoCompactIntegration: "auto",
+	};
+}