dashboard: approval_added / approval_resolved mutation events + client derived state

hive-c0re/src/dashboard_events.rs

@@ -44,4 +44,37 @@ pub enum DashboardEvent {
         body: String,
         at: i64,
     },
+    /// A new approval landed in the pending queue. Payload carries
+    /// enough to render the dashboard row without a `/api/state`
+    /// refetch (`diff` is the raw unified diff text, same shape the
+    /// snapshot ships).
+    ///
+    /// The approval's own kind (`"apply_commit"` / `"spawn"`) lives on
+    /// `approval_kind` rather than `kind` because the latter is taken
+    /// by the serde tag identifying which `DashboardEvent` variant
+    /// this is.
+    ApprovalAdded {
+        seq: u64,
+        id: i64,
+        agent: String,
+        approval_kind: &'static str,
+        sha_short: Option<String>,
+        diff: Option<String>,
+        description: Option<String>,
+    },
+    /// A pending approval transitioned to a terminal state
+    /// (approved / denied / failed). Clients move the row out of the
+    /// pending list and into history.
+    ApprovalResolved {
+        seq: u64,
+        id: i64,
+        agent: String,
+        approval_kind: &'static str,
+        sha_short: Option<String>,
+        /// `"approved"` / `"denied"` / `"failed"`.
+        status: &'static str,
+        resolved_at: i64,
+        note: Option<String>,
+        description: Option<String>,
+    },
 }