feat: add operational timeline workspace

src/features/workbench/workspace/workspace-model.ts

@@ -1,4 +1,5 @@
-export const ARTIFACT_MAP_SPLIT_MIN_WIDTH = 1360;
+export const ARTIFACT_PANE_MIN_WIDTH = 640;
+export const ARTIFACT_MAP_SPLIT_MIN_WIDTH = ARTIFACT_PANE_MIN_WIDTH * 2 + 1;
 
 export type ArtifactType = "diagnosis" | "simulation" | "metric_analysis";
 export type ArtifactLifecycle = "draft" | "reviewed" | "published" | "archived";
@@ -88,6 +89,7 @@ export type AnalysisArtifact = {
   scope: string;
   confidence: string;
   generatedAt: string;
+  analyticalTimeRange: { start: string; end: string };
   preferredView: ArtifactViewMode;
   mapRelation: ArtifactMapRelation;
   blocks: AnalysisBlock[];
@@ -155,13 +157,13 @@ export function requestArtifactView(
 
 export function resolveWorkbenchSurfaceMode(
   state: ArtifactWorkspaceState,
-  viewportWidth: number
+  businessWorkspaceWidth: number
 ): WorkbenchSurfaceMode {
   const artifact = state.activeArtifact;
   if (!artifact) return "default";
   if (state.requestedView === "map_only") return "map_only";
   if (artifact.mapRelation === "none" || state.requestedView === "focus") return "focus";
-  return viewportWidth >= ARTIFACT_MAP_SPLIT_MIN_WIDTH ? "map_split" : "focus";
+  return businessWorkspaceWidth >= ARTIFACT_MAP_SPLIT_MIN_WIDTH ? "map_split" : "focus";
 }
 
 function getPreferredArtifactView(artifact: AnalysisArtifact): ArtifactViewMode {