feat(web): back artifact viewing with blob sas

web/src/components/ArtifactPanel.tsx

@@ -1,11 +1,31 @@
+"use client";
+
+import { useState } from "react";
+import { getArtifactReadUrl } from "@/lib/blob-client";
 import type { ArtifactSummary } from "@/lib/types";
 
 export function ArtifactPanel({ artifacts }: { artifacts: ArtifactSummary[] }) {
+  const [openingId, setOpeningId] = useState<string | null>(null);
+
+  async function handleOpenArtifact(artifact: ArtifactSummary) {
+    if (!artifact.blobPath) {
+      return;
+    }
+
+    try {
+      setOpeningId(artifact.id);
+      const url = await getArtifactReadUrl(artifact.blobPath);
+      window.open(url, "_blank", "noopener,noreferrer");
+    } finally {
+      setOpeningId(null);
+    }
+  }
+
   return (
     <section className="surface-card" style={{ padding: "var(--ml-space-5)", display: "grid", gap: "var(--ml-space-3)" }}>
       <div style={{ display: "flex", justifyContent: "space-between", gap: "var(--ml-space-3)", alignItems: "center" }}>
         <div style={{ fontWeight: 700 }}>Artifacts</div>
-        <span className="badge">upload deferred</span>
+        <span className="badge">blob-backed view</span>
       </div>
       {artifacts.map((artifact) => (
         <div key={artifact.id} className="surface-muted" style={{ padding: "var(--ml-space-3)", display: "flex", justifyContent: "space-between", gap: "var(--ml-space-3)", alignItems: "center" }}>
@@ -13,7 +33,21 @@ export function ArtifactPanel({ artifacts }: { artifacts: ArtifactSummary[] }) {
             <strong>{artifact.name}</strong>
             <span style={{ color: "var(--ml-text-secondary)" }}>{artifact.type}</span>
           </div>
-          <span style={{ color: "var(--ml-text-secondary)" }}>{artifact.status}</span>
+          <div style={{ display: "flex", gap: "var(--ml-space-3)", alignItems: "center" }}>
+            <span style={{ color: "var(--ml-text-secondary)" }}>{artifact.status}</span>
+            {artifact.blobPath ? (
+              <button
+                type="button"
+                className="badge"
+                onClick={() => {
+                  void handleOpenArtifact(artifact);
+                }}
+                disabled={openingId === artifact.id}
+              >
+                {openingId === artifact.id ? "Opening…" : "Open"}
+              </button>
+            ) : null}
+          </div>
         </div>
       ))}
     </section>

web/src/lib/blob-client.ts

@@ -0,0 +1,18 @@
+"use client";
+
+import { platformClient } from "@/lib/platform";
+
+type BlobSasResponse = {
+  sasUrl: string;
+};
+
+export async function getArtifactReadUrl(blobPath: string): Promise<string> {
+  const response = await platformClient.post<BlobSasResponse>("/blob/sas", {
+    container: "attachments",
+    blobName: blobPath,
+    permissions: "r",
+    expiresInMinutes: 15,
+  });
+
+  return response.sasUrl;
+}

web/src/lib/notes-client.ts

@@ -47,6 +47,9 @@ type NoteArtifactDoc = {
   artifactType: "file" | "summary" | "extraction" | "citation" | "export";
   title: string;
   description?: string;
+  blobPath?: string;
+  contentType?: string;
+  sizeBytes?: number;
 };
 
 type NoteAgentActionDoc = {
@@ -145,6 +148,9 @@ function toArtifactSummary(artifact: NoteArtifactDoc): ArtifactSummary {
     name: artifact.title,
     type: artifact.artifactType,
     status: artifact.description ? "ready" : "processing",
+    blobPath: artifact.blobPath,
+    contentType: artifact.contentType,
+    sizeBytes: artifact.sizeBytes,
   };
 }
 

web/src/lib/types.ts

@@ -45,6 +45,9 @@ export interface ArtifactSummary {
   name: string;
   type: string;
   status: "ready" | "processing" | "deferred";
+  blobPath?: string;
+  contentType?: string;
+  sizeBytes?: number;
 }
 
 export interface NoteSummary {