[Reviewer] Dashboard Review: Interface-Bereinigung, SVG-Composable-Extraktion, Komponenten-Renaming, CSS-Fix

- AgentNodeData: Remove redundant fields task/runtime (dup of currentTask/runtimeSeconds)
- useTeamNetworkSvg: Extract SVG layout, path computation + pulse animation from TeamNetwork
- TeamNetwork: Use AgentNodeData type, fix undefined pulseElements2/storePulseRef2, remove unused props
- Rename MissionCard.vue → TaskCard.vue (matches actual usage)
- Extract FeedDetailModal from OperationsFeed (eliminates :global() CSS conflict with AgentModal)
- DashboardView: Fix type import path (../../ → ../), remove dead TeamNetwork props
- AgentModal: Remove unused thinkingStreamRef template ref

Build: vue-tsc --noEmit 0 errors, vite build ✓

frontend/src/components/dashboard/AgentModal.vue

@@ -54,7 +54,7 @@ defineEmits<{
         <section class="modal-section">
           <h3 class="section-label">Live Thinking</h3>
           <div class="thinking-panel">
-            <div class="thinking-stream" ref="thinkingStreamRef">
+            <div class="thinking-stream">
               <div
                 v-for="(msg, idx) in agent.thinkingStream"
                 :key="idx"