Refactor: Standardize UI for Empleados and Chat modules

This commit brings the Empleados and Chat UI modules more in line with the visual and functional conventions established by other modules in your application, particularly Planillas.

**Key Changes for Empleados Module:**

-   **`EmpleadosIndex.vue`:**
    -   Standardized page header structure and styling (title, create button).
    -   Removed extra descriptive paragraph from header.
    -   Aligned styling for loading, error, and no-data messages with other modules.
    -   Create button icon removed for consistency.
-   **`cardEmpleado.vue`:**
    -   Edit action now emits an event instead of direct navigation.
    -   Added a delete button with confirmation and store integration.
    -   Converted component from TypeScript to JavaScript.
    -   Adjusted layout for consistency with other card components.
-   **`tablaEmpleados.vue`:**
    -   Edit action now emits an event.
    -   Removed the "View Details" button to streamline actions.
    -   Added a delete button with confirmation and store integration.
    -   Converted component from TypeScript to JavaScript.
    -   Ensured action button styling and no-data messages are consistent.

**Key Changes for Chat Module:**

-   **`ChatView.vue`:**
    -   Added a standard page header with the title "Chat".
-   **`CanvasChat.vue`:**
    -   Standardized styling for the message input textarea and send button, using the new `accent-color-chat`.
    -   Updated message bubble colors for user (using `accent-color-chat`) and bot messages for better theme alignment.
    -   Adjusted custom scrollbar colors to use `accent-color-chat`.
-   **`useUi.js` (UI Store):**
    -   Added `accentColorChat` to the store's state, appearance keys, and actions, allowing it to be configurable and persisted. Defaulted to Teal (#0D9488).

These changes aim to provide a more cohesive user experience across your application by ensuring that common UI elements and interactions behave and look similar in the Empleados and Chat modules as they do elsewhere.

ui/src/views/ChatView.vue

@@ -4,11 +4,34 @@ import CanvasChat from '@/components/chat/CanvasChat.vue'
 </script>
 
 <template>
-  <div class="h-full flex flex-col">
-    <CanvasChat class="flex-1" />
+  <div class="chat-view-container flex flex-col h-full">
+    <header class="page-header">
+      <h1>Chat</h1>
+    </header>
+    <CanvasChat class="flex-1 min-h-0" /> <!-- Added min-h-0 -->
   </div>
 </template>
 
 <style scoped>
-/* nada por ahora */
+.chat-view-container {
+  /* Ensures the container itself takes full height if not already globally managed */
+  /* No padding or max-width needed here to allow CanvasChat to control its layout */
+}
+
+.page-header {
+  display: flex;
+  justify-content: space-between; /* Consistent with other headers, even if no button on right */
+  align-items: center;
+  margin-bottom: 25px; /* Consistent with PlanillasIndex */
+  padding: 10px 20px; /* Provides padding for the header itself */
+  border-bottom: 1px solid #eee; /* Consistent with PlanillasIndex */
+}
+
+.page-header h1 {
+  color: var(--accent-color-chat, var(--default-accent-color, #3498db)); /* Fallback color strategy */
+  font-size: 2.2em; /* Consistent with PlanillasIndex */
+  font-weight: 600; /* Consistent with PlanillasIndex */
+}
+
+/* CanvasChat is expected to manage its own internal padding and scrolling */
 </style>