Preserve connector source runtime evidence

webui/src/api/datasources.ts

@@ -164,6 +164,21 @@ export type DatasourceOrigin = {
   updated_at?: string | null;
   capabilities: string[];
   metadata: Record<string, unknown>;
+  source_mode: "live" | "cached" | "file_backed" | "static";
+  pushdown: {
+    projections: boolean;
+    pagination: boolean;
+    filters: string[];
+    aggregations: string[];
+    sorting: string[];
+  };
+  health: {
+    status: "healthy" | "warning" | "error" | "unknown";
+    code: string;
+    summary: string;
+    checked_at?: string | null;
+    details: Record<string, unknown>;
+  };
 };
 
 export type DatasourcePreview = {
@@ -172,6 +187,17 @@ export type DatasourcePreview = {
   total_rows: number;
   truncated: boolean;
   materialization?: DatasourceMaterialization | null;
+  returned_bytes: number;
+  elapsed_ms: number;
+  effective_row_limit: number;
+  effective_byte_limit: number;
+  effective_timeout_ms: number;
+  diagnostics: Array<{
+    severity: "info" | "warning" | "error";
+    code: string;
+    message: string;
+    details: Record<string, unknown>;
+  }>;
 };
 
 export async function listDatasources(

webui/src/features/datasources/DatasourcesPage.tsx

@@ -834,7 +834,8 @@ function OriginDetail({ origin }: { origin: DatasourceOrigin }) {
     <>
       <div className="datasources-metrics">
         <Metric label="Provider" value={origin.provider} />
-        <Metric label="Kind" value={origin.kind} />
+        <Metric label="Mode" value={readableToken(origin.source_mode)} />
+        <Metric label="Health" value={readableToken(origin.health.status)} />
         <Metric label="Rows" value={formatNumber(origin.row_count)} />
         <Metric label="Fields" value={String(origin.schema.length)} />
         <Metric label="Updated" value={formatDate(origin.updated_at)} />
@@ -849,8 +850,11 @@ function OriginDetail({ origin }: { origin: DatasourceOrigin }) {
         </div>
         <div className="datasources-key-values">
           <span><small>Origin reference</small><strong>{origin.ref}</strong></span>
-          <span><small>Shape</small><strong>{origin.shape}</strong></span>
+          <span><small>Kind</small><strong>{readableToken(origin.kind)}</strong></span>
+          <span><small>Shape</small><strong>{readableToken(origin.shape)}</strong></span>
           <span><small>Fingerprint</small><strong>{shortFingerprint(origin.fingerprint)}</strong></span>
+          <span><small>Health</small><strong>{origin.health.summary}</strong></span>
+          <span><small>Pushdown</small><strong>{pushdownSummary(origin)}</strong></span>
         </div>
       </section>
       <section className="datasources-detail-section">
@@ -864,6 +868,17 @@ function OriginDetail({ origin }: { origin: DatasourceOrigin }) {
   );
 }
 
+function pushdownSummary(origin: DatasourceOrigin): string {
+  const capabilities = [
+    origin.pushdown.projections ? "projections" : "",
+    origin.pushdown.pagination ? "pagination" : "",
+    ...origin.pushdown.filters.map((item) => `filter:${item}`),
+    ...origin.pushdown.aggregations.map((item) => `aggregate:${item}`),
+    ...origin.pushdown.sorting.map((item) => `sort:${item}`)
+  ].filter(Boolean);
+  return capabilities.join(", ") || "None declared";
+}
+
 function GovernanceDialog({
   open,
   settings,