fix(native-chat): avoid unretained summary blobs

src/main/native-chat/agent-session-wire/unhandled-provider-frame.test.ts

@@ -178,7 +178,7 @@ describe('unhandled provider frame journal fallback', () => {
     expect(row?.body.providerFrame?.kind).toBe('notification:warning')
   })
 
-  it('bounds a provider sentence and persists its overflow', () => {
+  it('bounds a provider sentence inline', () => {
     const message = 'abcdefghij'
     const row = unhandledProviderFrameJournalItem(
       'codex',
@@ -194,7 +194,6 @@ describe('unhandled provider frame journal fallback', () => {
 
     expect(row?.body.text).toContain('abcdefgh')
     expect(row?.body.text).toContain('[Orca: output truncated')
-    expect(row?.blobs.map((blob) => blob.payload)).toContain(message)
   })
 
   it('unwraps a nested sentence and falls back to the opcode when there is none', () => {

src/main/native-chat/agent-session-wire/unhandled-provider-frame.ts

@@ -79,19 +79,12 @@ export function unhandledProviderFrameJournalItem(
   // one; the raw frame stays behind the row's disclosure either way.
   const message = readableMessage(payload)
   const display = message ? boundInlineText(message, limits) : null
-  const blobs = new Map<string, string>()
-  if (bounded.truncated) {
-    blobs.set(bounded.digest, serialized)
-  }
-  if (message && display?.bounded.truncated) {
-    blobs.set(display.bounded.digest, message)
-  }
   return {
     body: {
       kind: 'status',
       text: display?.text ?? `${provider} · ${kind}`,
       providerFrame: { provider, kind, payload: bounded }
     },
-    blobs: [...blobs].map(([digest, blobPayload]) => ({ digest, payload: blobPayload }))
+    blobs: bounded.truncated ? [{ digest: bounded.digest, payload: serialized }] : []
   }
 }