diff --git a/frontend/packages/dashboard/src/common.js b/frontend/packages/dashboard/src/common.js
index 5b59da4f..8998ff46 100644
--- a/frontend/packages/dashboard/src/common.js
+++ b/frontend/packages/dashboard/src/common.js
@@ -216,7 +216,6 @@ export const Panel = (() => {
   let root = null;
   let titleEl = null;
   let bodyEl = null;
-  let drawer = null;
   /** Owner key set by `openNamed` (e.g. 'inbox'). `refresh(name, …)`
    *  is a no-op when the current owner doesn't match, so live
    *  updates can re-render an open view without grabbing focus
@@ -230,7 +229,6 @@ export const Panel = (() => {
       root = $('side-panel');
       titleEl = $('side-panel-title');
       bodyEl = $('side-panel-body');
-      drawer = root && root.querySelector('.side-panel-drawer');
     }
     return root != null;
   }
@@ -258,79 +256,6 @@ export const Panel = (() => {
     root.classList.remove('open');
     root.setAttribute('aria-hidden', 'true');
   }
-  // #451: drag-to-resize the drawer's width. Listens on a thin
-  // hit-strip glued to the drawer's left edge; mousedown captures
-  // pointermove + pointerup on the document so the drag continues
-  // even if the cursor strays outside the 6px handle band. Width
-  // persists to localStorage so it survives page reload. The CSS
-  // clamps the value (min-width: 320px, max-width: 96vw) — drop
-  // unparseable / out-of-range stored values silently.
-  const WIDTH_KEY = 'hyperhive:side-panel-width';
-  const WIDTH_MIN = 320;
-  function clampWidth(w) {
-    const max = Math.floor(window.innerWidth * 0.96);
-    return Math.max(WIDTH_MIN, Math.min(max, w));
-  }
-  function applyStoredWidth() {
-    if (!drawer) return;
-    const raw = (() => {
-      try { return localStorage.getItem(WIDTH_KEY); }
-      catch { return null; }
-    })();
-    if (!raw) return;
-    const parsed = parseInt(raw, 10);
-    if (!Number.isFinite(parsed) || parsed <= 0) return;
-    drawer.style.setProperty('--side-panel-w', clampWidth(parsed) + 'px');
-  }
-  function bindResize() {
-    if (!drawer) return;
-    const handle = document.createElement('div');
-    handle.className = 'side-panel-resize';
-    handle.setAttribute('role', 'separator');
-    handle.setAttribute('aria-orientation', 'vertical');
-    handle.setAttribute('aria-label', 'drag to resize side panel');
-    handle.title = 'drag to resize';
-    drawer.prepend(handle);
-    let dragging = false;
-    handle.addEventListener('pointerdown', (e) => {
-      e.preventDefault();
-      dragging = true;
-      document.body.classList.add('side-panel-resizing');
-      // Capture so we keep getting pointermove even when the cursor
-      // outpaces the handle band (drag-fast-then-pause loses the
-      // handle's :hover state otherwise).
-      try { handle.setPointerCapture(e.pointerId); } catch { /* legacy */ }
-    });
-    document.addEventListener('pointermove', (e) => {
-      if (!dragging) return;
-      // Drawer is anchored to the right edge — width = viewport - pointer X.
-      const w = clampWidth(window.innerWidth - e.clientX);
-      drawer.style.setProperty('--side-panel-w', w + 'px');
-    });
-    function stopDrag() {
-      if (!dragging) return;
-      dragging = false;
-      document.body.classList.remove('side-panel-resizing');
-      // Persist the final width. Read the actual rendered width
-      // rather than re-deriving so the stored value matches what
-      // the operator saw at mouseup.
-      const w = drawer.getBoundingClientRect().width;
-      try { localStorage.setItem(WIDTH_KEY, String(Math.round(w))); }
-      catch { /* localStorage unavailable — width is session-only */ }
-    }
-    document.addEventListener('pointerup', stopDrag);
-    document.addEventListener('pointercancel', stopDrag);
-    // Re-clamp on viewport resize so a persisted width that exceeds
-    // 96vw doesn't push the drawer off-screen after a window shrink.
-    window.addEventListener('resize', () => {
-      if (dragging) return;
-      const cur = drawer.getBoundingClientRect().width;
-      const clamped = clampWidth(cur);
-      if (clamped !== Math.round(cur)) {
-        drawer.style.setProperty('--side-panel-w', clamped + 'px');
-      }
-    });
-  }
   function bind() {
     if (!ensure()) return;
     $('side-panel-close').addEventListener('click', close);
@@ -338,8 +263,6 @@ export const Panel = (() => {
     document.addEventListener('keydown', (e) => {
       if (e.key === 'Escape' && root.classList.contains('open')) close();
     });
-    applyStoredWidth();
-    bindResize();
   }
   return { open, openNamed, refresh, close, bind };
 })();
diff --git a/frontend/packages/dashboard/src/dashboard.css b/frontend/packages/dashboard/src/dashboard.css
index b76e9f53..3caffb1c 100644
--- a/frontend/packages/dashboard/src/dashboard.css
+++ b/frontend/packages/dashboard/src/dashboard.css
@@ -1111,10 +1111,8 @@ summary:hover { color: var(--purple); }
   background: var(--bg-elev);
   border: 1px solid var(--border);
   padding: 0.5em 0.8em;
-  /* #450: no max-height cap — let the inbox grow to fill the
-     side-panel-body which already scrolls (`overflow: auto`). The
-     pre-#450 24em cap clamped the list well short of the available
-     panel height even on tall viewports. */
+  max-height: 24em;
+  overflow-y: auto;
 }
 .inbox li {
   padding: 0.25em 0;
@@ -1299,19 +1297,7 @@ footer .banner-thin {
   top: 0;
   right: 0;
   bottom: 0;
-  /* #451: width is a CSS variable so the drag handle (added by
-     Panel.bind) can update it live, and so localStorage-persisted
-     widths apply on first paint. Default min(760px, 94vw) preserves
-     the pre-#451 behaviour for operators who never drag. JS sets
-     `--side-panel-w` via inline style on the drawer; persistence
-     lives in localStorage (key `hyperhive:side-panel-width`),
-     replayed onto the var by `Panel.applyStoredWidth` at bind. */
-  width: var(--side-panel-w, min(760px, 94vw));
-  /* Clamp so a stored width can never push the drawer off-screen
-     or shrink it past readability. min content width matches the
-     panel-head's natural width with the close button visible. */
-  min-width: 320px;
-  max-width: 96vw;
+  width: min(760px, 94vw);
   display: flex;
   flex-direction: column;
   background: var(--bg-elev);
@@ -1323,36 +1309,6 @@ footer .banner-thin {
 .side-panel.open { pointer-events: auto; }
 .side-panel.open .side-panel-backdrop { opacity: 1; }
 .side-panel.open .side-panel-drawer { transform: translateX(0); }
-/* #451: drag-to-resize handle on the drawer's left edge. The handle
-   itself is invisible until hover/drag so it doesn't compete with the
-   2px mauve `border-left` for the visual boundary. Pointer-cursor
-   tells the operator the edge is grabbable; the brighter glow during
-   drag (`body.side-panel-resizing`) is the affordance the eye
-   tracks. */
-.side-panel-resize {
-  position: absolute;
-  top: 0;
-  left: 0;
-  bottom: 0;
-  width: 6px;
-  margin-left: -3px;
-  cursor: ew-resize;
-  z-index: 1;
-  background: transparent;
-  transition: background 120ms ease;
-}
-.side-panel-resize:hover,
-body.side-panel-resizing .side-panel-resize {
-  background: rgba(203, 166, 247, 0.55);
-}
-/* While dragging: kill text selection + force the resize cursor
-   page-wide so the cursor doesn't flip back to default the moment it
-   leaves the 6px handle band. */
-body.side-panel-resizing {
-  cursor: ew-resize !important;
-  user-select: none;
-}
-body.side-panel-resizing * { cursor: ew-resize !important; }
 .side-panel-head {
   flex: 0 0 auto;
   display: flex;