[Init] Initial commit - NetMesh terminal manager

infrastructure/scripts/screenSnapshotRegistry.ts

@@ -0,0 +1,35 @@
+export type ScreenSnapshotProvider = () => {
+  rows: number;
+  cols: number;
+  currentRow: number;
+  lines: string[];
+  /** Optional origin marker (e.g. hibernate-viewport). */
+  source?: string;
+};
+
+const providers = new Map<string, ScreenSnapshotProvider>();
+
+export function registerScreenSnapshotProvider(
+  sessionId: string,
+  provider: ScreenSnapshotProvider,
+): () => void {
+  providers.set(sessionId, provider);
+  return () => {
+    if (providers.get(sessionId) === provider) {
+      providers.delete(sessionId);
+    }
+  };
+}
+
+export function captureScreenSnapshot(sessionId: string) {
+  const provider = providers.get(sessionId);
+  if (!provider) {
+    return {
+      rows: 24,
+      cols: 80,
+      currentRow: 0,
+      lines: [] as string[],
+    };
+  }
+  return provider();
+}