Fix three open bugs from LOTUS_BUGS.md

- EditHistoryModal: decrypt fetched edit events in E2EE rooms via
  mx.decryptEventIfNeeded() before rendering; previously events not
  found in the room cache showed ciphertext or "(no text)"
- CallEmbedProvider: add touch support for PiP resize corners;
  extracted shared applyResize() helper; onTouchStart wired to all
  four corners alongside existing onMouseDown
- RoomView: skip chatBgStyle when glassmorphism is active; document.body
  already carries the background for the blur effect, rendering it twice
  doubled CSS animation work unnecessarily

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

src/app/components/CallEmbedProvider.tsx

@@ -722,6 +722,54 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
     document.addEventListener('touchend', onTouchEnd);
   };
 
+  function applyResize(
+    el: HTMLElement,
+    corner: Corner,
+    sx: number,
+    sy: number,
+    sw: number,
+    sh: number,
+    sl: number,
+    st: number,
+    cx: number,
+    cy: number,
+  ) {
+    const dx = cx - sx;
+    const dy = cy - sy;
+    let w = sw;
+    let h = sh;
+    let l = sl;
+    let t = st;
+    if (corner === 'se') {
+      w = sw + dx;
+      h = sh + dy;
+    }
+    if (corner === 'sw') {
+      w = sw - dx;
+      h = sh + dy;
+      l = sl + sw - Math.max(PIP_MIN_W, w);
+    }
+    if (corner === 'ne') {
+      w = sw + dx;
+      h = sh - dy;
+      t = st + sh - Math.max(PIP_MIN_H, h);
+    }
+    if (corner === 'nw') {
+      w = sw - dx;
+      h = sh - dy;
+      l = sl + sw - Math.max(PIP_MIN_W, w);
+      t = st + sh - Math.max(PIP_MIN_H, h);
+    }
+    w = Math.max(PIP_MIN_W, Math.min(w, window.innerWidth));
+    h = Math.max(PIP_MIN_H, Math.min(h, window.innerHeight));
+    l = Math.max(0, Math.min(l, window.innerWidth - PIP_MIN_W));
+    t = Math.max(0, Math.min(t, window.innerHeight - PIP_MIN_H));
+    el.style.width = `${w}px`;
+    el.style.height = `${h}px`;
+    el.style.left = `${l}px`;
+    el.style.top = `${t}px`;
+  }
+
   const handleResizeMouseDown = (e: React.MouseEvent, corner: Corner) => {
     e.stopPropagation();
     e.preventDefault();
@@ -737,40 +785,7 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
     document.body.style.cursor = `${corner}-resize`;
     document.body.style.userSelect = 'none';
     const onMove = (ev: MouseEvent) => {
-      const dx = ev.clientX - sx;
-      const dy = ev.clientY - sy;
-      let w = sw;
-      let h = sh;
-      let l = sl;
-      let t = st;
-      if (corner === 'se') {
-        w = sw + dx;
-        h = sh + dy;
-      }
-      if (corner === 'sw') {
-        w = sw - dx;
-        h = sh + dy;
-        l = sl + sw - Math.max(PIP_MIN_W, w);
-      }
-      if (corner === 'ne') {
-        w = sw + dx;
-        h = sh - dy;
-        t = st + sh - Math.max(PIP_MIN_H, h);
-      }
-      if (corner === 'nw') {
-        w = sw - dx;
-        h = sh - dy;
-        l = sl + sw - Math.max(PIP_MIN_W, w);
-        t = st + sh - Math.max(PIP_MIN_H, h);
-      }
-      w = Math.max(PIP_MIN_W, Math.min(w, window.innerWidth));
-      h = Math.max(PIP_MIN_H, Math.min(h, window.innerHeight));
-      l = Math.max(0, Math.min(l, window.innerWidth - PIP_MIN_W));
-      t = Math.max(0, Math.min(t, window.innerHeight - PIP_MIN_H));
-      el.style.width = `${w}px`;
-      el.style.height = `${h}px`;
-      el.style.left = `${l}px`;
-      el.style.top = `${t}px`;
+      applyResize(el, corner, sx, sy, sw, sh, sl, st, ev.clientX, ev.clientY);
     };
     const onUp = () => {
       document.removeEventListener('mousemove', onMove);
@@ -789,6 +804,38 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
     document.addEventListener('mouseup', onUp);
   };
 
+  const handleResizeTouchStart = (e: React.TouchEvent, corner: Corner) => {
+    e.stopPropagation();
+    e.preventDefault();
+    const el = callEmbedRef.current;
+    if (!el || e.touches.length !== 1) return;
+    normaliseToTopLeft(el);
+    const touch = e.touches[0];
+    const sx = touch.clientX;
+    const sy = touch.clientY;
+    const sw = el.offsetWidth;
+    const sh = el.offsetHeight;
+    const sl = parseFloat(el.style.left);
+    const st = parseFloat(el.style.top);
+    const onMove = (ev: TouchEvent) => {
+      if (ev.touches.length !== 1) return;
+      ev.preventDefault();
+      const t = ev.touches[0];
+      applyResize(el, corner, sx, sy, sw, sh, sl, st, t.clientX, t.clientY);
+    };
+    const onEnd = () => {
+      document.removeEventListener('touchmove', onMove);
+      document.removeEventListener('touchend', onEnd);
+      activeDragCleanupRef.current = null;
+    };
+    activeDragCleanupRef.current = () => {
+      document.removeEventListener('touchmove', onMove);
+      document.removeEventListener('touchend', onEnd);
+    };
+    document.addEventListener('touchmove', onMove, { passive: false });
+    document.addEventListener('touchend', onEnd);
+  };
+
   return (
     <CallEmbedContextProvider value={callEmbed}>
       {callEmbed && <CallUtils embed={callEmbed} />}
@@ -871,6 +918,7 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
                 <div
                   key={corner}
                   onMouseDown={(ev) => handleResizeMouseDown(ev, corner)}
+                  onTouchStart={(ev) => handleResizeTouchStart(ev, corner)}
                   onClick={(ev) => ev.stopPropagation()}
                   style={{
                     position: 'absolute',