fix: people list crash + call embed positioning + debug logging

- millify.ts: use named import { millify as millifyPlugin } instead of
  default import to fix Rolldown CJS interop bug where zc.default gets
  set to the whole module object instead of the function (mode=1 forces
  default=n instead of default=n.default, breaking MembersDrawer)
- useCallEmbed.ts: use getBoundingClientRect() for accurate fixed
  positioning; add useEffect to trigger syncCallEmbedPlacement on mount
  so embed is positioned before the first resize event
- CallEmbedProvider.tsx: fix [pipMode, callVisible] effect to NOT clear
  top/left/width/height when callVisible changes (previously cleared
  position set by syncCallEmbedPlacement every time joined changed);
  only clear pip-specific styles when actually exiting pip; add debug
  console logging for positioning state

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/components/CallEmbedProvider.tsx

@@ -427,13 +427,37 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
     [],
   );
 
-  // Track previous pipMode to only reset position when first entering pip (not on callVisible changes)
+  // Track previous pipMode to only reset position when entering/exiting pip
   const prevPipModeRef = React.useRef(false);
+
+  // Debug: log whenever call embed visibility/mode changes
+  React.useEffect(() => {
+    console.log('[CallEmbed] state:', {
+      callEmbedRoomId: callEmbed?.roomId,
+      selectedRoom,
+      joined,
+      inCallRoom: !!inCallRoom,
+      callVisible: !!callVisible,
+      pipMode: !!pipMode,
+      chatOnlyView: !!chatOnlyView,
+    });
+    const el = callEmbedRef.current;
+    if (el) {
+      console.log('[CallEmbed] container styles:', {
+        top: el.style.top, left: el.style.left,
+        width: el.style.width, height: el.style.height,
+        visibility: el.style.visibility, bottom: el.style.bottom, right: el.style.right,
+      });
+    }
+  }, [callEmbed?.roomId, selectedRoom, joined, inCallRoom, callVisible, pipMode, chatOnlyView, callEmbedRef]);
+
   React.useEffect(() => {
     const el = callEmbedRef.current;
     if (!el) return;
+    const wasInPip = prevPipModeRef.current;
+    prevPipModeRef.current = !!pipMode;
     if (pipMode) {
-      if (!prevPipModeRef.current) {
+      if (!wasInPip) {
         el.style.top = 'auto';
         el.style.left = 'auto';
         el.style.bottom = '72px';
@@ -448,24 +472,23 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
       }
       el.style.visibility = 'visible';
     } else {
-      [
-        'top',
-        'left',
-        'bottom',
-        'right',
-        'width',
-        'height',
-        'borderRadius',
-        'overflow',
-        'zIndex',
-        'boxShadow',
-        'border',
-      ].forEach((p) => {
-        (el.style as any)[p] = '';
-      });
+      if (wasInPip) {
+        // Exiting pip: clear all pip styles; syncCallEmbedPlacement will restore correct position
+        el.style.top = '';
+        el.style.left = '';
+        el.style.bottom = '';
+        el.style.right = '';
+        el.style.width = '';
+        el.style.height = '';
+        el.style.borderRadius = '';
+        el.style.overflow = '';
+        el.style.zIndex = '';
+        el.style.boxShadow = '';
+        el.style.border = '';
+      }
+      // syncCallEmbedPlacement owns top/left/width/height; don't clear them on visibility changes
       el.style.visibility = callVisible ? '' : 'hidden';
     }
-    prevPipModeRef.current = !!pipMode;
   }, [pipMode, callVisible]);
 
   React.useEffect(() => {