[Init] Initial commit - NetMesh terminal manager

application/state/terminalCwdStore.ts

@@ -0,0 +1,75 @@
+type Listener = () => void;
+
+export type TerminalCwdSource = "osc7" | "backend-strict" | "backend" | "snapshot" | "stale" | "unknown";
+
+/**
+ * Live terminal CWD map + version token.
+ * OSC 7 / cwd probes update this store without setState on TerminalLayer,
+ * so only subscribers (side-panel live snapshot bridge) re-render.
+ */
+class TerminalCwdStore {
+  private cwdBySession = new Map<string, string>();
+  private sourceBySession = new Map<string, TerminalCwdSource>();
+  private version = 0;
+  private listeners = new Set<Listener>();
+
+  getVersion = (): number => this.version;
+
+  getCwd = (sessionId: string | null | undefined): string | null => {
+    if (!sessionId) return null;
+    return this.cwdBySession.get(sessionId) ?? null;
+  };
+
+  getSource = (sessionId: string | null | undefined): TerminalCwdSource | undefined => {
+    if (!sessionId) return undefined;
+    return this.sourceBySession.get(sessionId);
+  };
+
+  subscribe = (listener: Listener): (() => void) => {
+    this.listeners.add(listener);
+    return () => {
+      this.listeners.delete(listener);
+    };
+  };
+
+  setCwd(sessionId: string, cwd: string | null, source?: TerminalCwdSource): boolean {
+    const current = this.cwdBySession.get(sessionId) ?? null;
+    const currentSource = this.sourceBySession.get(sessionId);
+    const next = cwd && cwd.trim().length > 0 ? cwd : null;
+    const nextSource = next
+      ? (source ?? (current === next ? currentSource : undefined) ?? "unknown")
+      : undefined;
+    if (current === next && currentSource === nextSource) return false;
+
+    if (next) {
+      this.cwdBySession.set(sessionId, next);
+      this.sourceBySession.set(sessionId, nextSource!);
+    } else {
+      this.cwdBySession.delete(sessionId);
+      this.sourceBySession.delete(sessionId);
+    }
+    this.version += 1;
+    for (const listener of this.listeners) {
+      listener();
+    }
+    return true;
+  }
+
+  prune(validSessionIds: ReadonlySet<string>): void {
+    let changed = false;
+    for (const sessionId of this.cwdBySession.keys()) {
+      if (!validSessionIds.has(sessionId)) {
+        this.cwdBySession.delete(sessionId);
+        this.sourceBySession.delete(sessionId);
+        changed = true;
+      }
+    }
+    if (!changed) return;
+    this.version += 1;
+    for (const listener of this.listeners) {
+      listener();
+    }
+  }
+}
+
+export const terminalCwdStore = new TerminalCwdStore();