feat(tokens): animated paths for scene and NPC tokens

Add path editor window, session playback on control/presentation, and RMB controls. Fix live pose clock so motion no longer freezes after ~250ms.

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

app/renderer/shared/tokens/useTokenPathSession.ts

@@ -0,0 +1,34 @@
+import { useEffect, useMemo, useState } from 'react';
+
+import { ipcChannels } from '../../../shared/ipc/contracts';
+import type { TokenPathSessionEvent, TokenPathSessionState } from '../../../shared/types';
+import { getDndApi } from '../dndApi';
+
+export function useTokenPathSession(): [
+  TokenPathSessionState | null,
+  { dispatch: (event: TokenPathSessionEvent) => Promise<void> },
+] {
+  const api = getDndApi();
+  const [state, setState] = useState<TokenPathSessionState | null>(null);
+
+  useEffect(() => {
+    void api.invoke(ipcChannels.tokenPathSession.getState, {}).then(({ state: s }) => {
+      setState(s);
+    });
+    return api.on(ipcChannels.tokenPathSession.stateChanged, ({ state: s }) => {
+      setState(s);
+    });
+  }, [api]);
+
+  const apiWrap = useMemo(
+    () => ({
+      dispatch: async (event: TokenPathSessionEvent) => {
+        const res = await api.invoke(ipcChannels.tokenPathSession.dispatch, { event });
+        void res;
+      },
+    }),
+    [api],
+  );
+
+  return [state, apiWrap];
+}