busca melissa: troca popover por Dialog Spotlight (CMD+K pattern)

Refatora MelissaBusca pra usar PrimeVue Dialog em vez de popover
absolute. Resolve definitivamente o bug do panel estourar viewport
quando ha muitos resultados.

Mudancas:

1. Trigger no dock: input -> <button> com aparencia de input. Clica
   ou Ctrl+K abre Dialog. Mantem placeholder + Ctrl+K kbd hint.

2. Dialog Spotlight: 640px max-width, posicionado 10vh do topo
   (estilo Spotlight macOS / Linear / GitHub). Backdrop blur escuro,
   dismissable mask, sem header, sem closable button (Esc cobre).

3. Input REAL dentro do Dialog: autofocus on open via nextTick.
   Mantem v-model="query" + @keydown="onKeydown" (Arrow/Enter).

4. Panel de resultados: era position:absolute com max-height:60vh
   (estourava em layouts com input perto do bottom). Agora vive
   DENTRO do Dialog (flex:1, max-height:70vh no content), scroll
   interno garantido por design — conteudo NUNCA passa do bottom
   da pagina.

5. Remove: onClickOutside (dismissableMask cobre), Transition
   mb-fade (Dialog tem sua animacao).

Comportamento end-user identico (Ctrl+K, navegacao com setas, Enter
seleciona, Esc fecha) mas visual + manutencao muito melhor.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/layout/melissa/MelissaBusca.vue

@@ -14,7 +14,7 @@
  * Quando promover pra produção: trocar a busca por chamada à RPC
  * `search_global` + manter a mesma estrutura de panel/items.
  */
-import { ref, computed, onMounted, onBeforeUnmount, watch } from 'vue';
+import { ref, computed, onMounted, onBeforeUnmount, watch, nextTick } from 'vue';
 import { supabase } from '@/lib/supabase/client';
 import { useRecentPatients } from '@/composables/useRecentPatients';
 
@@ -161,22 +161,15 @@ function closePanel() {
     showPanel.value = false;
     query.value = '';
     activeIndex.value = -1;
-    inputEl.value?.blur();
 }
 
-function onFocus() {
+function openDialog() {
     showPanel.value = true;
-}
-
-function onClickOutside(e) {
-    if (rootEl.value && !rootEl.value.contains(e.target)) {
-        showPanel.value = false;
-        activeIndex.value = -1;
-    }
+    // Foca input do Dialog após ele montar
+    nextTick(() => inputEl.value?.focus());
 }
 
 function onKeydown(e) {
-    if (!showPanel.value) return;
     if (e.key === 'ArrowDown') {
         e.preventDefault();
         activeIndex.value = Math.min(activeIndex.value + 1, flatList.value.length - 1);
@@ -186,19 +179,15 @@ function onKeydown(e) {
     } else if (e.key === 'Enter' && activeIndex.value >= 0) {
         e.preventDefault();
         selectEntry(flatList.value[activeIndex.value]);
-    } else if (e.key === 'Escape') {
-        // Stop bubbling pra ESC do parent não fechar overlay aleatório
-        e.stopPropagation();
-        closePanel();
     }
+    // Escape é tratado pelo Dialog (dismissableMask + closable)
 }
 
 function onGlobalKeydown(e) {
-    // Ctrl+K / ⌘+K → foca input
+    // Ctrl+K / ⌘+K → abre dialog
     if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === 'k') {
         e.preventDefault();
-        showPanel.value = true;
-        inputEl.value?.focus();
+        openDialog();
     }
 }
 
@@ -246,11 +235,9 @@ watch(query, (v) => {
 });
 
 onMounted(() => {
-    document.addEventListener('mousedown', onClickOutside);
     window.addEventListener('keydown', onGlobalKeydown);
 });
 onBeforeUnmount(() => {
-    document.removeEventListener('mousedown', onClickOutside);
     window.removeEventListener('keydown', onGlobalKeydown);
     if (debounceT) clearTimeout(debounceT);
 });
@@ -258,22 +245,45 @@ onBeforeUnmount(() => {
 
 <template>
     <div ref="rootEl" class="mb-search">
-        <div class="mb-field">
+        <!-- Trigger: aparência de input, mas é botão (abre Dialog) -->
+        <button type="button" class="mb-field" @click="openDialog" :aria-label="'Buscar (Ctrl+K)'">
             <i class="pi pi-search mb-field__icon" />
+            <span class="mb-field__placeholder">Buscar paciente, agenda, atalho…</span>
+            <span class="mb-field__kbd" aria-hidden="true">Ctrl K</span>
+        </button>
+
+        <!-- Dialog Spotlight: input grande no topo + resultados em coluna -->
+        <Dialog
+            v-model:visible="showPanel"
+            modal
+            :draggable="false"
+            :closable="false"
+            :dismissableMask="true"
+            :showHeader="false"
+            class="mb-dialog"
+            :style="{ width: '640px', maxWidth: '94vw' }"
+            pt:mask:class="mb-dialog__mask"
+            pt:content:class="mb-dialog__content"
+            @hide="closePanel"
+        >
+            <!-- Field do Dialog (input real, autofocus) -->
+            <div class="mb-dialog__field">
+                <i class="pi pi-search mb-dialog__field-icon" />
                 <input
                     ref="inputEl"
                     v-model="query"
                     type="text"
                     placeholder="Buscar paciente, agenda, atalho…"
-                class="mb-field__input"
-                @focus="onFocus"
+                    class="mb-dialog__input"
                     @keydown="onKeydown"
+                    autocomplete="off"
+                    spellcheck="false"
                 />
-            <span class="mb-field__kbd" aria-hidden="true">Ctrl K</span>
+                <span class="mb-dialog__esc" aria-hidden="true">Esc</span>
             </div>
 
-        <Transition name="mb-fade">
-            <div v-if="showPanel" class="mb-panel" role="listbox">
+            <!-- Painel de resultados (scroll interno) -->
+            <div class="mb-panel" role="listbox">
                 <div
                     v-if="query.trim().length >= 2 && !hasAnyResult"
                     class="mb-empty"
@@ -429,7 +439,7 @@ onBeforeUnmount(() => {
                     </button>
                 </div>
             </div>
-        </Transition>
+        </Dialog>
     </div>
 </template>
 
@@ -438,16 +448,17 @@ onBeforeUnmount(() => {
     position: relative;
     width: 100%;
     max-width: 560px;
-    /* Só horizontal — top/bottom ficam livres pro parent (mt-X do Tailwind) */
     margin-left: auto;
     margin-right: auto;
     font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
 }
 
+/* ─── Trigger no dock (visual de input, mas é botão que abre Dialog) ─── */
 .mb-field {
     position: relative;
     display: flex;
     align-items: center;
+    width: 100%;
     background: var(--m-bg-soft);
     backdrop-filter: blur(20px) saturate(140%);
     -webkit-backdrop-filter: blur(20px) saturate(140%);
@@ -455,11 +466,12 @@ onBeforeUnmount(() => {
     border-radius: 12px;
     padding: 0 14px;
     height: 44px;
+    cursor: pointer;
+    text-align: left;
     transition: background-color 160ms ease, border-color 160ms ease;
 }
-.mb-field:focus-within {
+.mb-field:hover {
     background: var(--m-bg-soft-hover);
-    border-color: var(--m-border-strong);
 }
 .mb-field__icon {
     color: var(--m-text-muted);
@@ -467,18 +479,15 @@ onBeforeUnmount(() => {
     margin-right: 10px;
     flex-shrink: 0;
 }
-.mb-field__input {
+.mb-field__placeholder {
     flex: 1;
-    background: transparent;
-    border: none;
-    outline: none;
-    color: var(--m-text, white); /* fallback white pro shell escuro do Melissa */
+    color: var(--m-text-muted);
     font-size: 0.9rem;
     font-family: inherit;
     min-width: 0;
-}
-.mb-field__input::placeholder {
-    color: var(--m-text-muted);
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
 }
 .mb-field__kbd {
     color: var(--m-text-muted);
@@ -493,26 +502,82 @@ onBeforeUnmount(() => {
     letter-spacing: 0.05em;
 }
 
-.mb-panel {
-    position: absolute;
-    top: calc(100% + 6px);
-    left: 0;
-    right: 0;
-    z-index: 30;
-    max-height: 60vh;
-    overflow-y: auto;
-    /* Background do tema atual (claro ou escuro) — herda do PrimeVue
-       theme tokens. Antes era hardcoded escuro/transparente e ficava
-       texto-branco-em-fundo-branco no tema claro. */
+/* ─── Dialog Spotlight (PrimeVue Dialog customizado) ─── */
+:global(.mb-dialog__mask) {
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    background: rgba(0, 0, 0, 0.55) !important;
+}
+:global(.mb-dialog) {
+    border-radius: 14px !important;
+    overflow: hidden;
+    /* Posiciona mais alto que o centro (estilo Spotlight) */
+    margin-top: 10vh !important;
+    align-self: flex-start;
+}
+:global(.mb-dialog .mb-dialog__content) {
+    padding: 0 !important;
+    background: var(--surface-card) !important;
+    border-radius: 14px !important;
+    overflow: hidden;
+    max-height: 70vh;
+    display: flex;
+    flex-direction: column;
+}
+
+.mb-dialog__field {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    padding: 14px 18px;
+    border-bottom: 1px solid var(--surface-border);
     background: var(--surface-card);
-    backdrop-filter: blur(20px) saturate(140%);
-    -webkit-backdrop-filter: blur(20px) saturate(140%);
+    flex-shrink: 0;
+}
+.mb-dialog__field-icon {
+    color: var(--text-color-secondary);
+    font-size: 1.05rem;
+    flex-shrink: 0;
+}
+.mb-dialog__input {
+    flex: 1;
+    background: transparent;
+    border: none;
+    outline: none;
+    color: var(--text-color);
+    font-size: 1.05rem;
+    font-family: inherit;
+    min-width: 0;
+}
+.mb-dialog__input::placeholder {
+    color: var(--text-color-secondary);
+    opacity: 0.7;
+}
+.mb-dialog__esc {
+    color: var(--text-color-secondary);
+    font-size: 0.65rem;
+    font-weight: 500;
+    padding: 2px 8px;
+    border-radius: 4px;
+    background: var(--surface-ground);
     border: 1px solid var(--surface-border);
-    border-radius: 12px;
+    flex-shrink: 0;
+    letter-spacing: 0.05em;
+    opacity: 0.8;
+}
+
+/* Panel agora vive DENTRO do Dialog (não mais absolute). Scroll interno
+   resolve o bug de overflow — o conteúdo nunca passa do bottom porque
+   o Dialog tem max-height e o panel é flex:1. */
+.mb-panel {
+    flex: 1 1 auto;
+    overflow-y: auto;
+    overflow-x: hidden;
     padding: 6px;
-    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
+    background: var(--surface-card);
     scrollbar-width: thin;
     scrollbar-color: var(--surface-border) transparent;
+    min-height: 0; /* permite shrink no flex */
 }
 .mb-panel::-webkit-scrollbar { width: 6px; }
 .mb-panel::-webkit-scrollbar-thumb {
@@ -624,13 +689,4 @@ onBeforeUnmount(() => {
     flex-shrink: 0;
 }
 
-.mb-fade-enter-active,
-.mb-fade-leave-active {
-    transition: opacity 140ms ease, transform 160ms ease;
-}
-.mb-fade-enter-from,
-.mb-fade-leave-to {
-    opacity: 0;
-    transform: translateY(-6px);
-}
 </style>