fix(dashboard): widen mission card title and surface Plan New Mission CTA

- Stack mission cards vertically inside the sidebar so the title gets
  the full card width; action buttons drop to their own row below.
- Move the Activity timestamp out of the cramped stats row onto its
  own line.
- Replace the icon-only Sparkles button in the sidebar header with a
  full-width centered "Plan New Mission" button (icon + text). Mobile
  footer button uses the same label.

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

packages/dashboard/app/components/MissionManager.css

@@ -208,12 +208,17 @@
 .mission-manager__sidebar-header {
   display: flex;
   align-items: center;
-  justify-content: flex-end;
+  justify-content: center;
   gap: var(--space-sm);
   padding: var(--space-md);
   border-bottom: var(--btn-border-width) solid var(--border);
 }
 
+.mission-manager__sidebar-cta {
+  flex: 1;
+  justify-content: center;
+}
+
 /* Hide duplicate sidebar title; the shared header already labels this view. */
 .mission-manager__sidebar-title {
   display: none;
@@ -684,6 +689,17 @@
   background: var(--card);
 }
 
+/* In the narrow sidebar, stack so the title gets full width and action buttons sit on their own row. */
+.mission-manager__sidebar .mission-list__item {
+  flex-direction: column;
+  align-items: stretch;
+  gap: var(--space-sm);
+}
+
+.mission-manager__sidebar .mission-list__item-actions {
+  justify-content: flex-end;
+}
+
 .mission-list__item-content {
   flex: 1;
   min-width: 0;
@@ -752,6 +768,10 @@
   margin-top: var(--space-xs);
 }
 
+.mission-list__item-activity {
+  margin-top: var(--space-xs);
+}
+
 .mission-list__item-stat {
   font-size: calc(var(--space-sm) + var(--space-xs) * 0.75);
   color: var(--text-muted);

packages/dashboard/app/components/MissionManager.tsx

@@ -3520,9 +3520,6 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
                   {tasksFailed} failed
                 </button>
               )}
-              <span className="mission-relative-time" data-testid={`mission-last-activity-${m.id}`}>
-                Activity {getRelativeTime(health?.lastActivityAt)}
-              </span>
               <div className={`mission-list__item-progress mission-list__item-progress--${healthState}`}>
                 <div
                   className="mission-list__item-progress-bar"
@@ -3531,6 +3528,13 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
               </div>
             </div>
           )}
+          {showSummaryBlock && (
+            <div className="mission-list__item-activity">
+              <span className="mission-relative-time" data-testid={`mission-last-activity-${m.id}`}>
+                Activity {getRelativeTime(health?.lastActivityAt)}
+              </span>
+            </div>
+          )}
         </div>
         <div className="mission-list__item-actions" onClick={(e) => e.stopPropagation()}>
           {m.status === "active" && (
@@ -3701,7 +3705,7 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
                     <div className="mission-list__footer-actions">
                       <button className="mission-add-btn" onClick={() => setShowInterviewModal(true)}>
                         <Sparkles size={16} />
-                        Create New Mission
+                        Plan New Mission
                       </button>
                     </div>
                   )}
@@ -3853,17 +3857,15 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
             style={isMobile ? undefined : { width: `${sidebarWidth}px` }}
           >
             <div className="mission-manager__sidebar-header">
-              <span className="mission-manager__sidebar-title">Missions</span>
-              <div className="mission-manager__sidebar-actions">
-                <button
-                  className="mission-add-btn mission-add-btn--sm"
-                  onClick={() => setShowInterviewModal(true)}
-                  title="Create New Mission"
-                  aria-label="Create New Mission"
-                >
-                  <Sparkles size={14} />
-                </button>
-              </div>
+              <button
+                className="mission-add-btn mission-manager__sidebar-cta"
+                onClick={() => setShowInterviewModal(true)}
+                title="Plan New Mission"
+                aria-label="Plan New Mission"
+              >
+                <Sparkles size={14} />
+                Plan New Mission
+              </button>
             </div>
             <div className="mission-manager__sidebar-list">
               {loading ? (