feat: redesign CMD+K button as macOS Spotlight-style search bar

Replace simple search button with search bar design in action bar:
- Semi-transparent styling integrated with dark action bar
- Keyboard shortcut indicators (⌘ K) shown as individual kbd elements
- Search icon and "Search" text for better discoverability
- Responsive: kbd keys hidden on mobile (<900px)
- Remove unused cmd-k-button.html partial template

Update test to verify new search bar structure (styling, kbd elements, icon).

PROJECT-MEMORY.md

@@ -728,7 +728,7 @@ curl http://localhost:1999/text?lang=es
 
 ---
 
-### 8. CMD+K Command Palette (2025-12-01)
+### 8. CMD+K Command Palette (2025-12-01, updated 2025-12-04)
 
 **ninja-keys integration for quick navigation:**
 
@@ -737,13 +737,21 @@ curl http://localhost:1999/text?lang=es
 - Scroll-to-section functionality
 - Language-aware responses
 - 1-hour cache headers
+- **Search bar button** (2025-12-04): macOS Spotlight-style search bar in action bar
+  - Integrated in dark action bar with semi-transparent styling
+  - Shows keyboard shortcut indicators (⌘ K) as individual kbd elements
+  - Replaces old simple search button with more discoverable design
+  - CSS: `.search-bar-btn`, `.search-bar-icon`, `.search-bar-text`, `.search-bar-keys`
+  - Responsive: kbd keys hidden on mobile (<900px)
 
 **Files:**
 - `internal/handlers/cv_cmdk.go` - CMD+K API handler
 - `static/js/ninja-keys-init.js` - Frontend initialization
 - `doc/16-CMD-K-API.md` - API documentation
+- `templates/partials/navigation/action-buttons.html` - Search bar button HTML
+- `static/css/04-interactive/_buttons.css` - Search bar button styles
 
 **Tests:**
 - `tests/mjs/71-cmd-k-api-scroll.test.mjs`
-- `tests/mjs/72-cmd-k-button.test.mjs`
+- `tests/mjs/72-cmd-k-button.test.mjs` - Tests search bar styling, kbd elements, icon, click behavior
 

static/css/04-interactive/_buttons.css

@@ -176,6 +176,72 @@
    The 900px media query there uses clamp() for smooth scaling of all buttons and icons */
 
 
+/* =============================================================================
+   CMD+K SEARCH BAR BUTTON (Integrated in Action Bar)
+   ============================================================================= */
+
+/* Search bar button - styled to look like a search input within the dark action bar */
+.search-bar-btn {
+    display: flex !important;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.35rem 0.6rem !important;
+    background: rgba(255, 255, 255, 0.1) !important;
+    border: 1px solid rgba(255, 255, 255, 0.2) !important;
+    border-radius: 6px !important;
+    min-width: 140px;
+    transition: all 0.2s ease;
+}
+
+.search-bar-btn:hover {
+    background: rgba(255, 255, 255, 0.15) !important;
+    border-color: rgba(255, 255, 255, 0.3) !important;
+}
+
+.search-bar-icon {
+    color: rgba(255, 255, 255, 0.6);
+    flex-shrink: 0;
+}
+
+.search-bar-text {
+    color: rgba(255, 255, 255, 0.6);
+    font-size: 0.8rem;
+    flex-grow: 1;
+    text-align: left;
+}
+
+.search-bar-keys {
+    display: flex;
+    align-items: center;
+    gap: 0.2rem;
+    flex-shrink: 0;
+}
+
+.search-bar-keys kbd {
+    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', system-ui, sans-serif;
+    font-size: 0.65rem;
+    font-weight: 500;
+    color: rgba(255, 255, 255, 0.7);
+    background: rgba(255, 255, 255, 0.15);
+    border: 1px solid rgba(255, 255, 255, 0.25);
+    border-radius: 3px;
+    padding: 0.1rem 0.3rem;
+    min-width: 1.2rem;
+    text-align: center;
+}
+
+/* Hide kbd keys on smaller screens to save space */
+@media (max-width: 900px) {
+    .search-bar-keys {
+        display: none;
+    }
+
+    .search-bar-btn {
+        min-width: auto;
+    }
+}
+
+
 /* =============================================================================
    NINJA-KEYS COMMAND BAR STYLING
    ============================================================================= */

templates/partials/navigation/action-buttons.html

@@ -24,11 +24,15 @@
         {{.UI.Widgets.ActionButtons.PrintFriendly}}
     </button>
     <button
-        class="action-btn search-btn has-tooltip cmd-k-trigger"
-        aria-label="{{.UI.Widgets.ActionButtons.SearchAriaLabel}}"
-        data-tooltip="{{.UI.Widgets.ActionButtons.Search}}">
-        <iconify-icon icon="mdi:magnify" width="24" height="24"></iconify-icon>
-        {{.UI.Widgets.ActionButtons.Search}}
+        id="cmd-k-button"
+        class="action-btn search-bar-btn cmd-k-trigger"
+        aria-label="{{.UI.Widgets.ActionButtons.SearchAriaLabel}}">
+        <iconify-icon icon="mdi:magnify" width="18" height="18" class="search-bar-icon"></iconify-icon>
+        <span class="search-bar-text">{{.UI.Widgets.ActionButtons.Search}}</span>
+        <span class="search-bar-keys">
+            <kbd>⌘</kbd>
+            <kbd>K</kbd>
+        </span>
     </button>
 </div>
 {{end}}

templates/partials/widgets/cmd-k-button.html

@@ -1,11 +0,0 @@
-{{define "cmd-k-button"}}
-<!-- CMD+K Command Bar Button (Fixed Left - Last) -->
-<!-- Uses lazy loading - ninja-keys loads on first click -->
-<button
-    id="cmd-k-button"
-    class="fixed-btn cmd-k-btn no-print has-tooltip cmd-k-trigger"
-    aria-label="{{.UI.CmdK.Button.AriaLabel}}"
-    data-tooltip="{{.UI.CmdK.Button.Tooltip}}">
-    <iconify-icon icon="mdi:text-box-search-outline"></iconify-icon>
-</button>
-{{end}}

tests/mjs/72-cmd-k-button.test.mjs

@@ -2,11 +2,11 @@
 /**
  * CMD+K BUTTON FUNCTIONALITY TEST
  * ================================
- * Tests that the CMD+K button:
- * - Has a distinct icon from zoom button
+ * Tests that the CMD+K search bar button:
+ * - Exists in the action bar with search bar styling
+ * - Has keyboard shortcut indicators (⌘ K)
  * - Click handler opens ninja-keys
- * - At-bottom illumination works
- * - Has distinct color from zoom button
+ * - Has search icon and text
  */
 
 import { chromium } from 'playwright';
@@ -14,7 +14,7 @@ import { chromium } from 'playwright';
 const URL = "http://localhost:1999";
 
 async function testCmdKButton() {
-  console.log('🎯 CMD+K BUTTON FUNCTIONALITY TEST\n');
+  console.log('🎯 CMD+K SEARCH BAR BUTTON TEST\n');
   console.log('='.repeat(70));
 
   const browser = await chromium.launch({ headless: process.env.HEADLESS === 'true' });
@@ -26,85 +26,100 @@ async function testCmdKButton() {
   await page.waitForTimeout(2000);
 
   // ========================================================================
-  // TEST 1: Button exists with distinct icon
+  // TEST 1: Button exists with search bar class
   // ========================================================================
-  console.log('\n1️⃣  Testing button exists with distinct icon...');
+  console.log('\n1️⃣  Testing button exists with search bar styling...');
 
   const cmdKButton = await page.$('#cmd-k-button');
   const buttonExists = cmdKButton !== null;
   console.log(`   Button exists: ${buttonExists}`);
 
-  let iconsDistinct = false;
+  let hasSearchBarClass = false;
   if (buttonExists) {
-    const cmdKIcon = await page.$eval('#cmd-k-button iconify-icon', el => el.getAttribute('icon'));
-    const zoomIcon = await page.$eval('#zoom-toggle-button iconify-icon', el => el.getAttribute('icon'));
-
-    console.log(`   CMD+K icon: ${cmdKIcon}`);
-    console.log(`   Zoom icon: ${zoomIcon}`);
-    iconsDistinct = cmdKIcon !== zoomIcon;
-    console.log(`   ${iconsDistinct ? '✅ PASS' : '❌ FAIL'} - Icons are distinct`);
+    hasSearchBarClass = await page.$eval('#cmd-k-button', el => el.classList.contains('search-bar-btn'));
+    console.log(`   Has search-bar-btn class: ${hasSearchBarClass}`);
+    console.log(`   ${hasSearchBarClass ? '✅ PASS' : '❌ FAIL'} - Button has search bar styling`);
   }
-  testResults.push({ test: 'Icons are distinct', passed: buttonExists && iconsDistinct });
+  testResults.push({ test: 'Button has search bar styling', passed: buttonExists && hasSearchBarClass });
 
   // ========================================================================
-  // TEST 2: Button click opens ninja-keys
+  // TEST 2: Button has keyboard shortcut keys (kbd elements)
   // ========================================================================
-  console.log('\n2️⃣  Testing button click opens ninja-keys...');
+  console.log('\n2️⃣  Testing keyboard shortcut indicators...');
 
+  let hasKbdElements = false;
+  if (buttonExists) {
+    const kbdCount = await page.$$eval('#cmd-k-button kbd', els => els.length);
+    hasKbdElements = kbdCount === 2; // Should have ⌘ and K
+    console.log(`   Kbd elements found: ${kbdCount}`);
+
+    if (kbdCount === 2) {
+      const kbdTexts = await page.$$eval('#cmd-k-button kbd', els => els.map(el => el.textContent.trim()));
+      console.log(`   Kbd contents: ${kbdTexts.join(', ')}`);
+    }
+    console.log(`   ${hasKbdElements ? '✅ PASS' : '❌ FAIL'} - Has ⌘ K keyboard indicators`);
+  }
+  testResults.push({ test: 'Has keyboard shortcut indicators', passed: hasKbdElements });
+
+  // ========================================================================
+  // TEST 3: Button has search icon
+  // ========================================================================
+  console.log('\n3️⃣  Testing search icon...');
+
+  let hasSearchIcon = false;
+  if (buttonExists) {
+    const icon = await page.$eval('#cmd-k-button iconify-icon', el => el.getAttribute('icon'));
+    hasSearchIcon = icon && icon.includes('magnify');
+    console.log(`   Icon: ${icon}`);
+    console.log(`   ${hasSearchIcon ? '✅ PASS' : '❌ FAIL'} - Has search/magnify icon`);
+  }
+  testResults.push({ test: 'Has search icon', passed: hasSearchIcon });
+
+  // ========================================================================
+  // TEST 4: Button click opens ninja-keys
+  // ========================================================================
+  console.log('\n4️⃣  Testing button click opens ninja-keys...');
+
+  // First click triggers lazy load of ninja-keys
   await page.click('#cmd-k-button');
-  await page.waitForTimeout(500);
+  await page.waitForTimeout(3000); // Wait for module to load (lazy loading)
 
-  const ninjaKeysOpen = await page.$eval('#cmd-k-bar', el => el.hasAttribute('open'));
-  console.log(`   Ninja-keys open: ${ninjaKeysOpen}`);
-  console.log(`   ${ninjaKeysOpen ? '✅ PASS' : '❌ FAIL'} - Click opens ninja-keys`);
-  testResults.push({ test: 'Click opens ninja-keys', passed: ninjaKeysOpen });
+  // Check if ninja-keys element was created and is open
+  const ninjaKeysState = await page.evaluate(() => {
+    const nk = document.getElementById('cmd-k-bar');
+    if (!nk) return { exists: false, isOpen: false };
+    // ninja-keys uses shadow DOM with .modal.visible class
+    const shadow = nk.shadowRoot;
+    const modal = shadow?.querySelector('.modal');
+    return {
+      exists: true,
+      isOpen: modal?.classList?.contains('visible') || nk.hasAttribute('open') || false
+    };
+  });
+
+  console.log(`   Ninja-keys exists: ${ninjaKeysState.exists}`);
+  console.log(`   Ninja-keys open: ${ninjaKeysState.isOpen}`);
+  const ninjaKeysOpened = ninjaKeysState.exists && ninjaKeysState.isOpen;
+  console.log(`   ${ninjaKeysOpened ? '✅ PASS' : '❌ FAIL'} - Click opens ninja-keys`);
+  testResults.push({ test: 'Click opens ninja-keys', passed: ninjaKeysOpened });
 
   // Close ninja-keys
   await page.keyboard.press('Escape');
   await page.waitForTimeout(300);
 
   // ========================================================================
-  // TEST 3: At-bottom illumination
+  // TEST 5: Button has Search text
   // ========================================================================
-  console.log('\n3️⃣  Testing at-bottom illumination...');
+  console.log('\n5️⃣  Testing Search text...');
 
-  // Scroll to very top - use scroll() which fires event naturally
-  await page.evaluate(() => window.scrollTo(0, 0));
-  await page.waitForTimeout(100);
-  // Trigger handleScroll manually via hyperscript's behavior
-  await page.evaluate(() => window.dispatchEvent(new Event('scroll')));
-  await page.waitForTimeout(300);
-  const atTopClass = await page.$eval('#cmd-k-button', el => el.classList.contains('at-bottom'));
-  console.log(`   At top - has at-bottom class: ${atTopClass}`);
-
-  // Scroll to bottom using mouse wheel to trigger actual scroll
-  await page.mouse.wheel(0, 100000);
-  await page.waitForTimeout(1000);
-  const atBottomClass = await page.$eval('#cmd-k-button', el => el.classList.contains('at-bottom'));
-  const zoomAtBottomClass = await page.$eval('#zoom-toggle-button', el => el.classList.contains('at-bottom'));
-  const infoAtBottomClass = await page.$eval('#info-button', el => el.classList.contains('at-bottom'));
-  console.log(`   At bottom - CMD+K has at-bottom: ${atBottomClass}`);
-  console.log(`   At bottom - Zoom has at-bottom: ${zoomAtBottomClass}`);
-  console.log(`   At bottom - Info has at-bottom: ${infoAtBottomClass}`);
-
-  const illuminationWorks = !atTopClass && atBottomClass;
-  console.log(`   ${illuminationWorks ? '✅ PASS' : '❌ FAIL'} - At-bottom illumination works`);
-  testResults.push({ test: 'At-bottom illumination', passed: illuminationWorks });
-
-  // ========================================================================
-  // TEST 4: Distinct color from zoom button
-  // ========================================================================
-  console.log('\n4️⃣  Testing distinct color at bottom...');
-
-  const cmdKBgColor = await page.$eval('#cmd-k-button', el => window.getComputedStyle(el).backgroundColor);
-  const zoomBgColor = await page.$eval('#zoom-toggle-button', el => window.getComputedStyle(el).backgroundColor);
-
-  console.log(`   CMD+K bg color: ${cmdKBgColor}`);
-  console.log(`   Zoom bg color: ${zoomBgColor}`);
-
-  const colorsDistinct = cmdKBgColor !== zoomBgColor;
-  console.log(`   ${colorsDistinct ? '✅ PASS' : '❌ FAIL'} - Colors are distinct`);
-  testResults.push({ test: 'Colors are distinct', passed: colorsDistinct });
+  let hasSearchText = false;
+  if (buttonExists) {
+    const searchText = await page.$eval('#cmd-k-button .search-bar-text', el => el.textContent.trim());
+    hasSearchText = searchText.toLowerCase() === 'search';
+    console.log(`   Search text: "${searchText}"`);
+    console.log(`   ${hasSearchText ? '✅ PASS' : '❌ FAIL'} - Has "Search" text`);
+  }
+  testResults.push({ test: 'Has Search text', passed: hasSearchText });
 
   // ========================================================================
   // FINAL SUMMARY