docs: finalize report assets and polish dashboard UI

docs/diagrams/activity.mmd

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+flowchart LR
+  subgraph Trigger[Trigger]
+    A[Create / Update Domain]
+    B[Manual Check List / Detail]
+  end
+
+  subgraph UI[Web UI]
+    C[Submit form domain]
+    D[Call domains.check]
+    E[Invalidate query + toast]
+  end
+
+  subgraph API[tRPC domainsRouter]
+    F[Save / load domain]
+    G[Run domain check]
+  end
+
+  subgraph DNS[DNS Check]
+    H[Resolve IPv4 A record]
+    I{Expected IP found?}
+  end
+
+  subgraph Result[Persisted Status]
+    J[MATCH]
+    K[MISMATCH]
+    L[UNRESOLVED]
+  end
+
+  A --> C --> F --> D
+  B --> D
+  D --> G --> H --> I
+  I -- Ya --> J
+  I -- Tidak --> K
+  H -- Lookup gagal --> L
+  J --> E
+  K --> E
+  L --> E