Add edit button to sidebar items and fix initial terminal fit

- Add pencil edit button on each sidebar profile item (visible on hover)
- Fire fitAddon.fit() multiple times after terminal creation (50/150/400ms)
  to catch the panel finishing its CSS layout
- Re-fit terminal when session:state transitions to 'connected'

frontend/src/css/sidebar.css

@@ -212,6 +212,33 @@
     margin-top: 1px;
 }
 
+/* Edit button (appears on hover, beside name) */
+.sidebar-item-edit {
+    flex-shrink: 0;
+    width: 22px;
+    height: 22px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 12px;
+    color: var(--text-disabled);
+    background: none;
+    border: none;
+    border-radius: var(--radius-sm);
+    cursor: pointer;
+    opacity: 0;
+    transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
+}
+
+.sidebar-item:hover .sidebar-item-edit {
+    opacity: 1;
+}
+
+.sidebar-item-edit:hover {
+    color: var(--accent);
+    background: var(--bg-hover);
+}
+
 /* Favourite star */
 .sidebar-item-star {
     flex-shrink: 0;

frontend/src/js/app.js

@@ -134,6 +134,10 @@ class App {
         window.runtime.EventsOn('session:state', (payload) => {
             this.tabs.updateSessionState(payload.sessionID, payload.state, payload.error);
             this.updateStatusBar();
+            // Re-fit the terminal once connected so it picks up the final container size
+            if (payload.state === 'connected') {
+                setTimeout(() => this.terminals.fitActive(), 50);
+            }
         });
 
         // Session closed by backend

frontend/src/js/sidebar.js

@@ -170,6 +170,17 @@ class Sidebar {
         textWrapper.appendChild(subEl);
         item.appendChild(textWrapper);
 
+        // Edit button (visible on hover)
+        const editBtn = createElement('button', 'sidebar-item-edit', {
+            textContent: '✎',
+            title: 'Edit profile',
+        });
+        editBtn.addEventListener('click', (e) => {
+            e.stopPropagation();
+            this.app.profileEditor.openEdit(profile.id);
+        });
+        item.appendChild(editBtn);
+
         // Favourite star
         if (profile.favourite) {
             const star = createElement('span', 'sidebar-item-star is-favourite', { textContent: '★' });

frontend/src/js/terminal.js

@@ -67,8 +67,14 @@ class TerminalManager {
         const container = document.getElementById(containerId);
         term.open(container);
 
-        // Initial fit
+        // Fit the terminal once the container has had time to lay out.
-        requestAnimationFrame(() => fitAddon.fit());
+        // A single requestAnimationFrame is not enough — the panel may
+        // still be transitioning from display:none, so we retry briefly.
+        const doFit = () => { try { fitAddon.fit(); } catch (_) { /* noop */ } };
+        requestAnimationFrame(doFit);
+        setTimeout(doFit, 50);
+        setTimeout(doFit, 150);
+        setTimeout(doFit, 400);
 
         // Forward user keystrokes to the backend
         term.onData((data) => {