feat(kb-ui): humanise provenance "Added by" via an injected resolver

ProvenancePanel/ObjectViewer gain an optional resolvePrincipal(p) prop so the
consumer can turn a {type,id} principal ref into a human label — the lib can't
know who "you" is. Falls back to the raw type·id when the resolver returns
undefined, so existing callers are unaffected.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components-object.tsx

@@ -16,7 +16,7 @@ import {
   Tag,
   Trash2,
 } from "lucide-react";
-import type { ObjectOutline, ObjectSummary, OutlineSection, TextSlice } from "./types";
+import type { ObjectOutline, ObjectSummary, OutlineSection, PrincipalRef, TextSlice } from "./types";
 import {
   Badge,
   SensitivityBadge,
@@ -160,11 +160,20 @@ export const CatalogCard: FC<{ outline: ObjectOutline; className?: string }> = (
 
 // ---- ProvenancePanel ------------------------------------------------------
 
-export const ProvenancePanel: FC<{ outline: ObjectOutline; className?: string }> = ({ outline, className }) => {
+export const ProvenancePanel: FC<{
+  outline: ObjectOutline;
+  /** Turn a principal ref into a human label ("You", an agent's name, …). The
+   *  lib can't know who "you" is, so the app supplies this; falls back to the
+   *  raw type·id when it returns undefined. */
+  resolvePrincipal?: (p: string | PrincipalRef) => string | undefined;
+  className?: string;
+}> = ({ outline, resolvePrincipal, className }) => {
   const p = outline.provenance;
+  const addedBy =
+    (p.created_by != null ? resolvePrincipal?.(p.created_by) : undefined) ?? formatPrincipal(p.created_by) ?? "—";
   const rows: [string, ReactNode][] = [
     ["Source", p.source_ref ? `${p.source_type} · ${p.source_ref}` : p.source_type],
-    ["Added by", formatPrincipal(p.created_by) ?? "—"],
+    ["Added by", addedBy],
     ["Added", formatDate(p.inserted_at)],
     ["Effective", p.effective_at ? formatDate(p.effective_at) : "—"],
     ["Last verified", p.verified_at ? formatDate(p.verified_at) : "Not confirmed"],
@@ -499,6 +508,8 @@ export interface ObjectViewerProps {
   readText: TextReaderProps["readText"];
   /** Resolve a browser-openable blob URL (for images + download). */
   resolveBlobUrl?: () => Promise<string>;
+  /** Humanise the "Added by" principal (see ProvenancePanel). */
+  resolvePrincipal?: (p: string | PrincipalRef) => string | undefined;
   highlight?: { start: number; end: number };
   onOpenObject?: (objectId: string, span?: { start: number; end: number }) => void;
   actions?: ObjectActions;
@@ -509,6 +520,7 @@ export const ObjectViewer: FC<ObjectViewerProps> = ({
   outline,
   readText,
   resolveBlobUrl,
+  resolvePrincipal,
   highlight,
   onOpenObject,
   actions,
@@ -602,7 +614,7 @@ export const ObjectViewer: FC<ObjectViewerProps> = ({
               <OutlineNav sections={outline.outline} activeId={activeSection} onSelect={(s) => setActiveSection(s.id)} />
             </div>
           )}
-          <ProvenancePanel outline={outline} />
+          <ProvenancePanel outline={outline} resolvePrincipal={resolvePrincipal} />
         </aside>
       </div>
     </div>