diff --git a/internal/server/dashboard_csp_test.go b/internal/server/dashboard_csp_test.go
index db6b39ad..98c10349 100644
--- a/internal/server/dashboard_csp_test.go
+++ b/internal/server/dashboard_csp_test.go
@@ -249,8 +249,8 @@ func TestDashboardCSP_JsdelivrNpmPathScoped(t *testing.T) {
 // handler surface in static/dashboard.html (R236-SEC-02 / #479, also tracked
 // as #922). The dashboard CSP still ships `script-src 'unsafe-inline'`
 // because the static HTML contains a fixed set of `onclick=` attributes on
-// header buttons (sidebar search, history, new session, cron panel,
-// sidebar-search-clear, sidebar-toggle resizer). Migrating to
+// header buttons (history, new session, cron panel,
+// sidebar-toggle resizer). Migrating to
 // hash/nonce CSP requires moving those handlers into dashboard.js as
 // addEventListener bindings.
 //
@@ -276,8 +276,8 @@ func TestDashboardCSP_InlineHandlerSurfaceDoesNotGrow(t *testing.T) {
 	html := string(body)
 
 	// Cap on `onclick=` attributes. R249-SEC-9 (#922) migration: the static
-	// HTML's header/sidebar handlers (sidebar-search, history, new-session,
-	// cron, sidebar-search-clear, sidebar-toggle) plus the
+	// HTML's header/sidebar handlers (history, new-session, cron,
+	// sidebar-toggle) plus the
 	// quick-ask form's onsubmit were moved into dashboard.js as
 	// addEventListener binds (DOMContentLoaded header binder + wireQuickAskInput
 	// for the repaint-prone quick-ask form), driving the static surface to 0.
@@ -365,10 +365,8 @@ func TestDashboardCSP_StaticHandlersWiredInJS(t *testing.T) {
 		id      string
 		handler string
 	}{
-		{"btn-sidebar-search", "toggleSidebarSearch"},
 		{"btn-history", "toggleHistory"},
 		{"btn-new-session", "createNewSession"},
-		{"sidebar-search-clear", "closeSidebarSearch"},
 		{"btn-sidebar-toggle", "toggleSidebarCollapsed"},
 		{"quick-ask-form", "submitQuickAsk"},
 	}
diff --git a/internal/server/static/dashboard.html b/internal/server/static/dashboard.html
index f30dff4f..e2cabceb 100644
--- a/internal/server/static/dashboard.html
+++ b/internal/server/static/dashboard.html
@@ -1292,27 +1292,8 @@
 .hdr-btns{display:flex;gap:4px;align-items:center}
 .hdr-btn{background:none;border:1px solid var(--nz-border);border-radius:var(--nz-radius-ms);color:var(--nz-text-mute);cursor:pointer;padding:0;position:relative;transition:all .15s;line-height:1;white-space:nowrap;width:32px;height:32px;display:flex;align-items:center;justify-content:center}
 .hdr-btn:hover{background:var(--nz-bg-2);color:var(--nz-text);border-color:var(--nz-text-faint)}
-/* Active state indicates the toggleable pane (currently sidebar search) is
-   open. Matches the accent color used on focus rings across the dashboard
-   so a keyboard user can tell which toggle the button drives. */
 .hdr-btn.active{background:var(--nz-bg-2);color:var(--nz-accent);border-color:var(--nz-accent)}
 .hdr-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
-/* UX-P3 sidebar search: toggle-revealed input row under the header-row.
-   Lives inside .sidebar-header (outside #session-list) so sessions_update
-   repaints don't clobber the input value/focus — the renderer reads the
-   input's current value on each repaint and filters accordingly. */
-.sidebar-search{display:flex;gap:6px;align-items:center;margin-top:8px;padding:0 4px}
-.sidebar-search-input{flex:1;padding:6px 10px;background:var(--nz-bg-1);border:1px solid var(--nz-border);border-radius:var(--nz-radius-ms);color:var(--nz-text);font-size:var(--nz-fs-sm2);font-family:inherit;outline:none;transition:border-color .1s}
-.sidebar-search-input:focus{border-color:var(--nz-accent)}
-.sidebar-search-input::placeholder{color:var(--nz-text-faint)}
-.sidebar-search-clear{background:transparent;border:1px solid transparent;color:var(--nz-text-mute);font-size:var(--nz-fs-md);line-height:1;padding:4px 8px;border-radius:var(--nz-radius-sm);cursor:pointer;transition:all .1s}
-.sidebar-search-clear:hover{background:var(--nz-bg-2);color:var(--nz-text);border-color:var(--nz-border)}
-/* When the filter is active AND empty (no matches), paint a friendly hint
-   instead of the legacy "no sessions" CTA which would mislead operators
-   into thinking they have zero sessions. .session-list-filter-empty is
-   emitted by the renderer's filter branch. */
-.session-list-filter-empty{padding:24px 16px;text-align:center;color:var(--nz-text-dim);font-size:var(--nz-fs-sm)}
-.session-list-filter-empty .slfe-hint{display:block;margin-top:6px;color:var(--nz-text-faint);font-size:var(--nz-fs-xs)}
 /* Header badges (history count, cron attention count) are neutral by
    default — red is opt-in via .is-alert (see Track D variants below).
    Before Round 127 this rule hard-coded --nz-red, then a later Track D
@@ -2837,18 +2818,10 @@
       <div class="header-row">
         <h1>naozhi</h1>
         <div class="hdr-btns">
-          <button type="button" class="hdr-btn" id="btn-sidebar-search" title="搜索会话 (按 /)" aria-label="搜索会话" aria-expanded="false"><svg viewBox="0 0 24 24" aria-hidden="true" focusable="false"><circle cx="11" cy="11" r="7"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg></button>
           <button type="button" class="hdr-btn" id="btn-history" title="历史会话" aria-label="查看会话历史" aria-haspopup="dialog"><svg viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M3 12a9 9 0 1 0 9-9 9.75 9.75 0 0 0-6.74 2.74L3 8"/><path d="M3 3v5h5"/><path d="M12 7v5l4 2"/></svg><span class="hdr-badge" id="history-badge" style="display:none" aria-label="历史记录数"></span></button>
           <button type="button" class="hdr-btn" id="btn-new-session" title="New Session" aria-label="Create new session"><svg viewBox="0 0 24 24" aria-hidden="true" focusable="false"><line x1="12" y1="5" x2="12" y2="19"/><line x1="5" y1="12" x2="19" y2="12"/></svg></button>
         </div>
       </div>
-      <!-- UX-P3 sidebar search: default-hidden, toggled via btn-sidebar-search
-           or the `/` shortcut. Kept outside #session-list so sessions_update
-           re-renders don't blow away the input value or its focus. -->
-      <div class="sidebar-search" id="sidebar-search" style="display:none">
-        <input type="text" id="sidebar-search-input" class="sidebar-search-input" placeholder="搜索会话、项目或 CLI 名..." autocomplete="off" spellcheck="false" aria-label="搜索会话" />
-        <button type="button" class="sidebar-search-clear btn-close" id="sidebar-search-clear" title="关闭搜索" aria-label="关闭搜索">&times;</button>
-      </div>
     </div>
     <!-- Node/connection picker moved into the New Session modal (renderNodePicker).
          The sidebar no longer filters by node; every connected node's sessions
diff --git a/internal/server/static/dashboard.js b/internal/server/static/dashboard.js
index b414dc6e..d5d905d3 100644
--- a/internal/server/static/dashboard.js
+++ b/internal/server/static/dashboard.js
@@ -61,10 +61,9 @@ let nodesData = {};
 let lastVersion = 0;
 let lastNodesJSON = '';
 let lastHistoryJSON = '';
-// _lastSidebarData caches the most recent /api/sessions payload so UX-P3
-// sidebar search can re-render locally on each keystroke without
-// re-hitting the server. Set by fetchSessions after a successful render;
-// consumed by the sidebar-search input oninput handler.
+// _lastSidebarData caches the most recent /api/sessions payload so the
+// sidebar can re-render locally without re-hitting the server. Set by
+// fetchSessions after a successful render.
 let _lastSidebarData = null;
 // _lastSidebarHtml caches the last fully-built sidebar HTML string so
 // renderSidebar can skip the (expensive) `list.innerHTML = html` write
@@ -363,10 +362,8 @@ document.addEventListener('DOMContentLoaded', function () {
     const el = document.getElementById(id);
     if (el) el.addEventListener('click', fn);
   };
-  bindClick('btn-sidebar-search', function () { toggleSidebarSearch(); });
   bindClick('btn-history', function () { toggleHistory(); });
   bindClick('btn-new-session', function () { createNewSession(); });
-  bindClick('sidebar-search-clear', function () { closeSidebarSearch(); });
   bindClick('btn-sidebar-toggle', function () { toggleSidebarCollapsed(); });
   // NOTE: the quick-ask form submit is NOT bound here. That form lives in
   // `#main`, which is repainted via innerHTML (mainEmptyHtml()), so its submit
@@ -720,28 +717,11 @@ function renderSidebar(data) {
   // cron-panel-consolidation RFC §4.2: cron stubs are filtered server-side
   // (internal/server/dashboard_session.go) so allItems never contains cron
   // keys here. The previous `cronVisibleKeys` whitelist + per-render filter
-  // are gone — both branches below (search-filter / project-grouping) walk
-  // allItems directly.
+  // are gone — the project-grouping branch below walks allItems directly.
   const visibleItems = allItems;
 
-  // UX-P3 sidebar search: if the filter input is visible and non-empty,
-  // skip the project grouping entirely and render the filtered set as a
-  // flat list. Grouping under a filter scatters matches across day headers
-  // and loses the "search" affordance. Reading the input here (not in a
-  // separate oninput handler) means every sessions_update re-evaluates the
-  // filter — same query, fresh data — without flickering the input.
-  const filterQuery = readSidebarSearchQuery();
-  const filterActive = !!filterQuery;
-  let listHtml = '';
-  if (filterActive) {
-    const matched = filterSessionsByQuery(visibleItems, filterQuery);
-    listHtml = matched.length === 0
-      ? '<div class="session-list-filter-empty">没有匹配的会话<span class="slfe-hint">试试项目名、CLI 名或 prompt 片段</span></div>'
-      : matched.map(sessionCardHtml).join('');
-  }
-
-  let html = listHtml;
-  if (!filterActive) {
+  let html = '';
+  {
     // Project lookup by (node,name) so we can reach favorite/github flags.
     const projIndex = {};
     projectsData.forEach(p => {
@@ -875,9 +855,8 @@ function renderSidebar(data) {
   // R110-P2 empty-state CTA: keep the legacy "no sessions" text (E2E asserts
   // it via toContain) but add a visible call-to-action so first-time users
   // aren't left staring at a dead sidebar. createNewSession is the same handler
-  // the header `+` button invokes. NOT emitted in filter mode — the
-  // filter-specific empty state ('没有匹配的会话') already covers that path.
-  if (!html && !filterActive) html = '<div class="no-sessions">no sessions<br><button type="button" class="no-sessions-cta" onclick="createNewSession()">+ 开启你的第一个会话</button></div>';
+  // the header `+` button invokes.
+  if (!html) html = '<div class="no-sessions">no sessions<br><button type="button" class="no-sessions-cta" onclick="createNewSession()">+ 开启你的第一个会话</button></div>';
   // R33-UX1: skip the innerHTML write (and its full sidebar reflow) when
   // the produced markup is byte-identical to what is already mounted.
   // 20 sessions × 1 Hz polling cycle rebuilds the same string every tick
@@ -921,144 +900,6 @@ function renderSidebar(data) {
   renderRecentSessionsPanel();
 }
 
-// --- UX-P3 sidebar search helpers ---
-//
-// readSidebarSearchQuery is called at the top of renderSidebar so every
-// sessions_update repaint re-applies the current filter without a separate
-// oninput handler firing a second render. Returns '' when the search pane
-// is hidden or the input is empty, both of which are "no filter" states.
-function readSidebarSearchQuery() {
-  const pane = document.getElementById('sidebar-search');
-  if (!pane || pane.style.display === 'none') return '';
-  const input = document.getElementById('sidebar-search-input');
-  if (!input) return '';
-  return input.value.trim();
-}
-
-// filterSessionsByQuery is the pure match step — extracted so unit tests
-// can exercise it without driving the DOM. Match surface: user_label,
-// summary, last_prompt, project, cli_name, key (all substring,
-// case-insensitive). session_id is NOT in the surface because it's a
-// long opaque hash no operator types; matching on key is enough when
-// someone wants to paste a slice of it.
-function filterSessionsByQuery(items, query) {
-  const q = (query || '').trim().toLowerCase();
-  if (!q) return items;
-  return items.filter(s => {
-    if (!s) return false;
-    const fields = [
-      s.user_label, s.summary, s.last_prompt,
-      s.project, s.cli_name, s.key,
-    ];
-    for (const f of fields) {
-      if (typeof f === 'string' && f.toLowerCase().indexOf(q) !== -1) return true;
-    }
-    return false;
-  });
-}
-
-// toggleSidebarSearch flips the search pane's visibility. Entering toggle
-// auto-focuses the input; exiting clears it (so re-opening starts clean
-// and a stale filter doesn't silently hide sessions). Mirrors the header
-// button's aria-expanded so screen readers track state.
-function toggleSidebarSearch() {
-  const pane = document.getElementById('sidebar-search');
-  const btn = document.getElementById('btn-sidebar-search');
-  if (!pane || !btn) return;
-  const opening = pane.style.display === 'none';
-  pane.style.display = opening ? 'flex' : 'none';
-  btn.classList.toggle('active', opening);
-  btn.setAttribute('aria-expanded', opening ? 'true' : 'false');
-  if (opening) {
-    const input = document.getElementById('sidebar-search-input');
-    if (input) {
-      // defer focus so the display:flex paint lands first (Safari refuses
-      // focus() on a still-hidden element, then silently drops it).
-      setTimeout(() => { input.focus(); input.select(); }, 30);
-    }
-  } else {
-    // Closing clears the query so the next open starts fresh and the
-    // sidebar immediately re-renders without a lingering filter. Render
-    // locally against the cached payload (if any) to avoid an extra
-    // /api/sessions round-trip — the data is already authoritative.
-    // #1772: cancel any pending debounced keystroke render first, so a timer
-    // queued just before close can't fire after we've already cleared and
-    // re-rendered (which, when _lastSidebarData is null, would also trigger a
-    // spurious debouncedFetchSessions()).
-    if (_sidebarSearchDebounce) { clearTimeout(_sidebarSearchDebounce); _sidebarSearchDebounce = null; }
-    const input = document.getElementById('sidebar-search-input');
-    if (input) input.value = '';
-    if (_lastSidebarData) {
-      renderSidebar(_lastSidebarData);
-    } else {
-      debouncedFetchSessions();
-    }
-  }
-}
-
-// closeSidebarSearch is the explicit "close" path used by the × button
-// and the Esc key — same semantics as toggleSidebarSearch's close arm.
-function closeSidebarSearch() {
-  const pane = document.getElementById('sidebar-search');
-  if (pane && pane.style.display !== 'none') toggleSidebarSearch();
-}
-
-// initSidebarSearch wires the input handler + the `/` and Esc keyboard
-// shortcuts. Call once at startup. The input's oninput handler triggers
-// a debounced sidebar re-fetch so each keystroke re-applies the filter
-// against the canonical sessions data — no client-side cache desync.
-let _sidebarSearchDebounce = null;
-function initSidebarSearch() {
-  const input = document.getElementById('sidebar-search-input');
-  if (input) {
-    input.addEventListener('input', () => {
-      // Re-render locally against the cached /api/sessions payload so
-      // rapid typing doesn't DoS the server with per-keystroke requests.
-      // When no data has landed yet (first load), fall through to a
-      // debounced fetch as a degraded bootstrap.
-      //
-      // #1772: debounce the local re-render too. renderSidebar does a full
-      // sort + filter + sessionCardHtml map+join over every session on each
-      // keystroke; the _lastSidebarHtml guard skips the DOM write only when
-      // the output is byte-identical, which is rare while a filter narrows.
-      // 120ms collapses a typing burst into one render. The periodic
-      // sessions_update repaint reuses the current query via
-      // readSidebarSearchQuery, so debouncing the keystroke render loses no
-      // filter state.
-      if (_sidebarSearchDebounce) clearTimeout(_sidebarSearchDebounce);
-      _sidebarSearchDebounce = setTimeout(() => {
-        _sidebarSearchDebounce = null;
-        if (_lastSidebarData) {
-          renderSidebar(_lastSidebarData);
-        } else {
-          debouncedFetchSessions();
-        }
-      }, 120);
-    });
-    input.addEventListener('keydown', e => {
-      if (e.key === 'Escape') { e.preventDefault(); closeSidebarSearch(); }
-    });
-  }
-  // Global `/` shortcut: open sidebar search unless the user is already
-  // typing into some other input/textarea/contenteditable. Mirrors the
-  // `?` help shortcut's skip rule so developer muscle memory works.
-  document.addEventListener('keydown', e => {
-    if (e.key !== '/') return;
-    if (e.ctrlKey || e.metaKey || e.altKey || e.shiftKey) return;
-    const tgt = e.target;
-    if (tgt && (tgt.tagName === 'INPUT' || tgt.tagName === 'TEXTAREA' || tgt.isContentEditable)) return;
-    if (document.querySelector('.modal-overlay, .cmd-palette-overlay')) return;
-    e.preventDefault();
-    const pane = document.getElementById('sidebar-search');
-    if (pane && pane.style.display === 'none') {
-      toggleSidebarSearch();
-    } else {
-      const inp = document.getElementById('sidebar-search-input');
-      if (inp) inp.focus();
-    }
-  });
-}
-
 // projectDisplayLabel returns the operator-facing name for a project,
 // preferring the explicit ProjectConfig.display_name override (R110-P2 /
 // #448) and falling back to the directory-derived `p.name` so projects
@@ -12461,8 +12302,7 @@ document.addEventListener('keydown', function(e) {
   // `[` toggles collapse on PC. Skip when typing into an input/textarea/
   // contenteditable, when any modifier is held, while an IME composition is
   // active (CJK input fires `[` for fullwidth bracket), or while a modal/
-  // palette is open. Mirrors the skip logic the `/` shortcut uses for
-  // sidebar search.
+  // palette is open.
   if (e.key !== '[') return;
   if (e.isComposing) return;
   if (e.ctrlKey || e.metaKey || e.altKey || e.shiftKey) return;
@@ -12659,7 +12499,6 @@ initViewportTracking();
 initSwipeDelete();
 initSidebarProjectActions();
 initSwipeBack();
-initSidebarSearch();
 (function(){
   var ov=document.createElement('div');ov.className='lightbox-overlay';
   ov.setAttribute('role','dialog');ov.setAttribute('aria-modal','true');ov.setAttribute('aria-label','Image preview');
diff --git a/internal/server/static_ux_contract_test.go b/internal/server/static_ux_contract_test.go
index 5122170a..0243df5b 100644
--- a/internal/server/static_ux_contract_test.go
+++ b/internal/server/static_ux_contract_test.go
@@ -2231,162 +2231,6 @@ func TestDashboardHTML_R110P3_PaletteFavoriteStyles(t *testing.T) {
 	}
 }
 
-// TestDashboardJS_UXP3_SidebarSearchHelper pins the UX-P3 sidebar-search
-// surface. Operators with many sessions couldn't quickly locate one —
-// the sidebar had no filter box. The fix adds a toggle-revealed input
-// in .sidebar-header, a pure filter helper, and a `/` keyboard shortcut
-// mirroring the `?` help-modal pattern. The renderer reads the live
-// query on every repaint so sessions_update deltas don't clobber the
-// filter. Local re-render on keystroke (against _lastSidebarData) avoids
-// per-keystroke /api/sessions hits.
-func TestDashboardJS_UXP3_SidebarSearchHelper(t *testing.T) {
-	t.Parallel()
-	data, err := dashboardJS.ReadFile("static/dashboard.js")
-	if err != nil {
-		t.Fatalf("read dashboard.js: %v", err)
-	}
-	js := string(data)
-
-	// 1) Pure helpers must exist at module scope.
-	for _, need := range []string{
-		"function filterSessionsByQuery(items, query)",
-		"function readSidebarSearchQuery()",
-		"function toggleSidebarSearch()",
-		"function closeSidebarSearch()",
-		"function initSidebarSearch()",
-	} {
-		if !strings.Contains(js, need) {
-			t.Errorf("dashboard.js missing %q — UX-P3 sidebar-search needs this module-scope helper", need)
-		}
-	}
-
-	// 2) Match surface: substring, case-insensitive, hitting these six
-	//    fields. session_id intentionally excluded (opaque hash; matching
-	//    on `key` covers the "paste a key slice" workflow without forcing
-	//    every test session to carry a human-shaped session_id).
-	if !strings.Contains(js, "s.user_label, s.summary, s.last_prompt,") {
-		t.Error("filterSessionsByQuery must match user_label/summary/last_prompt as the primary prompt-derived fields")
-	}
-	if !strings.Contains(js, "s.project, s.cli_name, s.key,") {
-		t.Error("filterSessionsByQuery must extend the match surface to project/cli_name/key")
-	}
-	if !strings.Contains(js, "typeof f === 'string' && f.toLowerCase().indexOf(q) !== -1") {
-		t.Error("filterSessionsByQuery must do case-insensitive substring match, guarded by typeof check (some fields may be absent)")
-	}
-
-	// 3) Render integration: renderSidebar must read the live query via
-	//    readSidebarSearchQuery and skip grouping when filter is active.
-	//    Pinning the conditional shape catches a refactor that might
-	//    accidentally call the filter twice or run grouping+filter
-	//    concurrently.
-	if !strings.Contains(js, "const filterQuery = readSidebarSearchQuery();") {
-		t.Error("renderSidebar must consult readSidebarSearchQuery() so each repaint re-applies the current filter")
-	}
-	if !strings.Contains(js, "const filterActive = !!filterQuery;") {
-		t.Error("renderSidebar must derive filterActive from the query so both the render branch and the empty-state branch agree")
-	}
-	if !strings.Contains(js, "if (!filterActive) {") {
-		t.Error("renderSidebar must gate grouping behind !filterActive so filter mode skips project grouping")
-	}
-
-	// 4) Local re-render on keystroke: the oninput handler must target
-	//    _lastSidebarData, NOT debouncedFetchSessions — the latter would
-	//    issue one /api/sessions per keystroke. The fallback to
-	//    debouncedFetchSessions when the cache is empty is intentional
-	//    for the first-paint corner case.
-	if !strings.Contains(js, "if (_lastSidebarData) {") {
-		t.Error("sidebar-search input handler must short-circuit via _lastSidebarData cache to avoid server DoS on keystroke")
-	}
-	if !strings.Contains(js, "renderSidebar(_lastSidebarData);") {
-		t.Error("sidebar-search oninput must re-render locally via renderSidebar(_lastSidebarData) on cache hit")
-	}
-
-	// 5) Keyboard shortcut: `/` opens search unless user is already in
-	//    an input. Mirror of the `?` help-modal pattern, so pin both the
-	//    key + the tagname skip rules.
-	if !strings.Contains(js, "if (e.key !== '/') return;") {
-		t.Error("initSidebarSearch must register a `/` global shortcut")
-	}
-	if !strings.Contains(js, "tgt.tagName === 'INPUT' || tgt.tagName === 'TEXTAREA' || tgt.isContentEditable") {
-		t.Error("`/` shortcut must skip when the focus target is an input/textarea/contenteditable")
-	}
-	// Esc inside the search input must close the pane, not bubble to
-	// other Esc handlers (like the lightbox).
-	if !strings.Contains(js, "if (e.key === 'Escape') { e.preventDefault(); closeSidebarSearch(); }") {
-		t.Error("sidebar-search input must intercept Esc and route to closeSidebarSearch")
-	}
-
-	// 6) Filter-mode empty state: distinct from the "no sessions" global
-	//    empty state. Pin the filter-specific copy so future i18n passes
-	//    keep the two messages separate.
-	if !strings.Contains(js, "没有匹配的会话") {
-		t.Error("renderSidebar must emit a filter-specific empty-state line (没有匹配的会话); the 'no sessions' CTA would mislead into thinking zero sessions exist")
-	}
-	// The legacy "no sessions" CTA must NOT be emitted in filter mode —
-	// assert the gate condition.
-	if !strings.Contains(js, "if (!html && !filterActive)") {
-		t.Error("renderSidebar must gate the 'no sessions' CTA behind !filterActive so filter mode doesn't render a misleading 'no sessions' shell")
-	}
-}
-
-// TestDashboardHTML_UXP3_SidebarSearchUI pins the HTML + CSS the JS
-// helper relies on. Missing hooks would leave the pane functionally
-// intact but visually broken (e.g. input with no styling, no hover on
-// the clear button), which is a silent UX regression. Also locks the
-// sidebar-search position OUTSIDE #session-list so sessions_update
-// re-renders don't blow away the input value.
-func TestDashboardHTML_UXP3_SidebarSearchUI(t *testing.T) {
-	t.Parallel()
-	data, err := dashboardHTML.ReadFile("static/dashboard.html")
-	if err != nil {
-		t.Fatalf("read dashboard.html: %v", err)
-	}
-	html := string(data)
-
-	// Toggle button in the header-row btns: clicking fires toggleSidebarSearch.
-	// The handler is bound via addEventListener in dashboard.js (#922 / #479
-	// inline-handler migration) rather than an inline onclick=, so the static
-	// HTML only needs the stable #btn-sidebar-search anchor.
-	if !strings.Contains(html, `id="btn-sidebar-search"`) {
-		t.Error("dashboard.html must expose the btn-sidebar-search trigger with id=btn-sidebar-search")
-	}
-	js2, err := dashboardJS.ReadFile("static/dashboard.js")
-	if err != nil {
-		t.Fatalf("read dashboard.js: %v", err)
-	}
-	if !strings.Contains(string(js2), `bindClick('btn-sidebar-search', function () { toggleSidebarSearch(); });`) {
-		t.Error("dashboard.js must bind btn-sidebar-search click to toggleSidebarSearch() via addEventListener")
-	}
-
-	// The search pane must exist inside .sidebar-header and OUTSIDE
-	// #session-list. Verify by checking the ordering of the two ids.
-	paneIdx := strings.Index(html, `id="sidebar-search"`)
-	listIdx := strings.Index(html, `id="session-list"`)
-	if paneIdx <= 0 {
-		t.Fatal("sidebar-search id not found in dashboard.html")
-	}
-	if listIdx <= 0 {
-		t.Fatal("session-list id not found in dashboard.html")
-	}
-	if paneIdx > listIdx {
-		t.Error("sidebar-search must appear BEFORE session-list in dashboard.html so it lives inside .sidebar-header, not inside #session-list (which gets innerHTML-replaced on every sessions_update)")
-	}
-
-	// CSS rules the JS handler + layout depend on.
-	for _, rule := range []string{
-		`.sidebar-search{`,
-		`.sidebar-search-input{`,
-		`.sidebar-search-input:focus{`,
-		`.sidebar-search-clear{`,
-		`.session-list-filter-empty{`,
-		`.hdr-btn.active{`,
-	} {
-		if !strings.Contains(html, rule) {
-			t.Errorf("dashboard.html missing CSS rule %q required by UX-P3 sidebar search", rule)
-		}
-	}
-}
-
 // TestDashboardJS_R110P1_HistoryDrawerSearch pins the R110-P1 fix that
 // adds a search input to the history popover. Before this change, an
 // operator with 100+ history entries had to eyeball-scroll to locate a
diff --git a/test/e2e/mobile_render.test.js b/test/e2e/mobile_render.test.js
index 99907cee..f6bbbac0 100644
--- a/test/e2e/mobile_render.test.js
+++ b/test/e2e/mobile_render.test.js
@@ -8,51 +8,11 @@ const { startMockServer } = require('./mock-server');
 const fs = require('fs');
 const path = require('path');
 
-const desktop = { viewport: { width: 1280, height: 800 } };
-
 test.describe('#1772 mobile render hotspots', () => {
   let mock;
   test.beforeAll(async () => { mock = await startMockServer(); });
   test.afterAll(() => mock.server.close());
 
-  test('sidebar search re-render is debounced (not per-keystroke)', async ({ browser }) => {
-    const ctx = await browser.newContext({ ...desktop });
-    const page = await ctx.newPage();
-    await page.goto(mock.url + '/dashboard');
-    await page.waitForSelector('.session-card');
-
-    // Open the sidebar search box.
-    await page.click('#btn-sidebar-search');
-    await page.waitForSelector('#sidebar-search-input', { state: 'visible' });
-
-    // Instrument renderSidebar to count invocations.
-    await page.evaluate(() => {
-      // eslint-disable-next-line no-eval
-      window.__renderCount = 0;
-      // renderSidebar is a top-level function; wrap it via eval in page scope.
-      // eslint-disable-next-line no-eval
-      eval('var __origRenderSidebar = renderSidebar; renderSidebar = function(){ window.__renderCount++; return __origRenderSidebar.apply(this, arguments); };');
-    });
-
-    const input = page.locator('#sidebar-search-input');
-    // Type a 5-char burst quickly.
-    await input.type('hello', { delay: 10 });
-
-    // Immediately after the burst, the debounced render must NOT have fired
-    // once per keystroke. Allow at most 1 (in case the last timer just fired).
-    const immediate = await page.evaluate(() => window.__renderCount);
-    expect(immediate).toBeLessThanOrEqual(1);
-
-    // After the debounce window, exactly one render should have landed.
-    await page.waitForTimeout(250);
-    const settled = await page.evaluate(() => window.__renderCount);
-    expect(settled).toBeGreaterThanOrEqual(1);
-    // A 5-char burst must collapse to far fewer than 5 renders.
-    expect(settled).toBeLessThan(5);
-
-    await ctx.close();
-  });
-
   test('source: swipe-delete caches offsetWidth and popover dismiss is gated', async () => {
     // These are hot-loop layout-read removals with no cheap DOM contract to
     // assert at runtime; pin them at the source level so they can't regress.