perf: coalesce compose inspector refresh work

Sources/RepoPrompt/Features/AgentMode/ViewModels/UI/AgentSelectedFilesModelCoordinator.swift

@@ -276,6 +276,7 @@ final class AgentSelectedFilesModelCoordinator: ObservableObject {
     private var cachedModels: [AgentSelectedFilesModelIdentity: AgentContextExportModel] = [:]
     private var cachedModelOrder: [AgentSelectedFilesModelIdentity] = []
     private var completedCountSnapshots: [AgentSelectedFilesModelIdentity: AgentContextFileCodemapCountSummary] = [:]
+    private var completedEntryMetricsSnapshots: [AgentSelectedFilesModelIdentity: PromptContextEntryMetricsSnapshot] = [:]
 
     private struct VisibleFileMetricsScope: Equatable {
         let filePathDisplay: FilePathDisplay
@@ -337,8 +338,14 @@ final class AgentSelectedFilesModelCoordinator: ObservableObject {
     func refreshAfterTokenMetricsCompletion(
         _ request: AgentSelectedFilesModelRequest
     ) -> AgentSelectedFilesRefreshOutcome? {
-        guard request.entryMetricsSnapshot != nil else { return nil }
+        guard let entryMetricsSnapshot = request.entryMetricsSnapshot else { return nil }
         guard displayedModelMatches(request.identity) || loadingIdentity == request.identity else { return nil }
+        if completedDisplayedModelMatches(request.identity),
+           completedEntryMetricsSnapshots[request.identity] == entryMetricsSnapshot
+        {
+            debugStats.skippedLoaded += 1
+            return .skippedLoaded
+        }
         return refresh(
             request,
             force: true,
@@ -542,6 +549,7 @@ final class AgentSelectedFilesModelCoordinator: ObservableObject {
                     canMutateDisplayedModel: true
                 )
                 completedCountSnapshots[request.identity] = resolvedRowSplit.fileCodemapCountSummary
+                completedEntryMetricsSnapshots[request.identity] = request.entryMetricsSnapshot
                 cacheModel(resolvedModel, for: request.identity)
                 loadedIdentity = request.identity
                 displayedIdentity = request.identity
@@ -731,6 +739,7 @@ final class AgentSelectedFilesModelCoordinator: ObservableObject {
             let evicted = cachedModelOrder.removeFirst()
             cachedModels[evicted] = nil
             completedCountSnapshots[evicted] = nil
+            completedEntryMetricsSnapshots[evicted] = nil
         }
     }
 

Sources/RepoPrompt/Features/AgentMode/Views/AgentModeDetailWithSidebarView.swift

@@ -337,7 +337,7 @@ private struct AgentContextInspectorPresenter<PrimaryContent: View>: View {
     let drawerStore: AgentContextDrawerUIStore
     @ObservedObject var presentationStore: AgentContextDrawerPresentationStore
     let promptManager: PromptViewModel
-    @ObservedObject var runtimeVM: AgentRuntimeSidebarViewModel
+    let runtimeVM: AgentRuntimeSidebarViewModel
     let contextBuilderAgentVM: ContextBuilderAgentViewModel
     let oracleViewModel: OracleViewModel
     let selectionCoordinator: WorkspaceSelectionCoordinator
@@ -363,7 +363,7 @@ private struct AgentContextInspectorPresenter<PrimaryContent: View>: View {
         self.drawerStore = drawerStore
         _presentationStore = ObservedObject(wrappedValue: drawerStore.presentation)
         self.promptManager = promptManager
-        _runtimeVM = ObservedObject(wrappedValue: runtimeVM)
+        self.runtimeVM = runtimeVM
         self.contextBuilderAgentVM = contextBuilderAgentVM
         self.oracleViewModel = oracleViewModel
         self.selectionCoordinator = selectionCoordinator

Sources/RepoPrompt/Features/AgentMode/Views/ContextDrawer/AgentContextDrawerTokenEstimatePill.swift

@@ -16,7 +16,10 @@ struct AgentContextDrawerTokenEstimatePill: View {
     }
 
     var body: some View {
-        let snapshot = tokenCounter.latestPublishedTokenSnapshot(for: tokenBlankingSelection)
+        let snapshot = tokenCounter.latestPublishedTokenSnapshot(
+            for: tokenBlankingSelection,
+            scheduleRefreshIfNeeded: false
+        )
         let contextWindowTokenBudget = contextWindowTokens
         let isWaiting = isWaitingForExpectedSelection(snapshot)
 

Tests/RepoPromptTests/AgentMode/AgentSelectedFilesModelCoordinatorTests.swift

@@ -79,6 +79,9 @@ final class AgentSelectedFilesModelCoordinatorTests: XCTestCase {
         XCTAssertEqual(coordinator.model?.totalSelectedDisplayTokens, 91)
         XCTAssertEqual(coordinator.debugStats.resolverStarts, 2)
         XCTAssertEqual(coordinator.debugStats.resolverCompletions, 2)
+        XCTAssertEqual(coordinator.refreshAfterTokenMetricsCompletion(enrichedRequest), .skippedLoaded)
+        let startCountAfterCompletion = await resolver.startCount()
+        XCTAssertEqual(startCountAfterCompletion, 2)
     }
 
     @MainActor
@@ -1433,6 +1436,10 @@ private actor GatedTokenMetricsModelResolver {
         guard !continuations.isEmpty else { return }
         continuations.removeFirst().resume()
     }
+
+    func startCount() -> Int {
+        starts
+    }
 }
 
 private actor ProgressiveCodemapModelResolver {