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packages/hive-mind-core/tests/harvest/caption-parity.test.ts

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+import { describe, it, expect } from 'vitest';
+import { ChatGPTAdapter } from '../../src/harvest/chatgpt-adapter.js';
+import { ClaudeAdapter } from '../../src/harvest/claude-adapter.js';
+import { GeminiAdapter } from '../../src/harvest/gemini-adapter.js';
+import { UniversalAdapter } from '../../src/harvest/universal-adapter.js';
+
+/**
+ * W4.4 — caption-aware harvest adapters (plan component #7). Exact production
+ * counterpart of the W3.3 benchmark data-parity fix: image content the
+ * exports ALREADY carry as text was silently dropped by every adapter
+ * (measured cost on LoCoMo: 4.5pp single-hop). No vision model — these
+ * tests assert the text-bearing fields now surface in parsed item content.
+ */
+
+describe('W4.4 — caption parity across adapters', () => {
+  it('ChatGPT: DALL-E image parts surface their generation prompt', () => {
+    const fixture = [{
+      title: 'Image chat',
+      create_time: 1700000000,
+      mapping: {
+        n1: {
+          message: {
+            author: { role: 'user' },
+            content: { parts: ['Here is my painting:'] },
+            create_time: 1700000001,
+          },
+        },
+        n2: {
+          message: {
+            author: { role: 'assistant' },
+            content: {
+              parts: [
+                { content_type: 'image_asset_pointer', asset_pointer: 'file://x', metadata: { dalle: { prompt: 'a painting of a sunset with a pink sky' } } },
+                'Here you go!',
+              ],
+            },
+            create_time: 1700000002,
+          },
+        },
+      },
+    }];
+    const items = new ChatGPTAdapter().parse(fixture);
+    expect(items).toHaveLength(1);
+    expect(items[0].content).toContain('[Shared image: a painting of a sunset with a pink sky]');
+    expect(items[0].content).toContain('Here you go!');
+  });
+
+  it('ChatGPT: message-level attachments surface as presence signals', () => {
+    const fixture = [{
+      title: 'Attachment chat',
+      create_time: 1700000000,
+      mapping: {
+        n1: {
+          message: {
+            author: { role: 'user' },
+            content: { parts: ['Review this please'] },
+            metadata: { attachments: [{ name: 'Q3-roadmap.pdf' }] },
+            create_time: 1700000001,
+          },
+        },
+      },
+    }];
+    const items = new ChatGPTAdapter().parse(fixture);
+    expect(items[0].content).toContain('[Attached: Q3-roadmap.pdf]');
+  });
+
+  it('Claude: attachment extracted_content surfaces (text already extracted)', () => {
+    const fixture = [{
+      uuid: 'c1',
+      name: 'Doc chat',
+      created_at: '2026-05-01T10:00:00Z',
+      chat_messages: [
+        {
+          sender: 'human',
+          text: 'Summarize the attached notes',
+          created_at: '2026-05-01T10:00:00Z',
+          attachments: [{ file_name: 'meeting-notes.txt', extracted_content: 'Launch locked for June 20. Marketing owns the landing page.' }],
+        },
+      ],
+    }];
+    const items = new ClaudeAdapter().parse(fixture);
+    expect(items).toHaveLength(1);
+    expect(items[0].content).toContain('[Attached: meeting-notes.txt] Launch locked for June 20');
+  });
+
+  it('Claude: an attachment-only message survives (was dropped as empty)', () => {
+    const fixture = [{
+      uuid: 'c2',
+      name: 'Image only',
+      created_at: '2026-05-01T10:00:00Z',
+      chat_messages: [
+        { sender: 'human', text: '', files: [{ file_name: 'whiteboard.png' }] },
+        { sender: 'assistant', text: 'Nice whiteboard sketch!' },
+      ],
+    }];
+    const items = new ClaudeAdapter().parse(fixture);
+    expect(items[0].content).toContain('[Shared file: whiteboard.png]');
+  });
+
+  it('Gemini: fileData/inlineData parts surface as text signals', () => {
+    const fixture = {
+      conversations: [{
+        id: 'g1',
+        title: 'Media chat',
+        create_time: '2026-05-01T10:00:00Z',
+        messages: [
+          { role: 'user', parts: [{ text: 'Look at this:' }, { inlineData: { mimeType: 'image/png', data: 'AAAA' } }] },
+          { role: 'model', parts: [{ fileData: { fileUri: 'gs://bucket/diagram.svg', mimeType: 'image/svg+xml' } }, { text: 'Interesting diagram.' }] },
+        ],
+      }],
+    };
+    const items = new GeminiAdapter().parse(fixture);
+    expect(items.length).toBeGreaterThan(0);
+    const all = items.map(i => i.content).join('\n');
+    expect(all).toContain('[Shared media: image/png]');
+    expect(all).toContain('[Shared file: gs://bucket/diagram.svg]');
+  });
+
+  it('Universal: caption/alt/description fields on object blocks surface', () => {
+    const fixture = {
+      conversations: [{
+        id: 'u1',
+        title: 'Generic chat',
+        messages: [
+          { role: 'user', content: [{ type: 'image', caption: 'a sunset with a palm tree' }, { type: 'text', text: 'What do you think?' }] },
+        ],
+      }],
+    };
+    const items = new UniversalAdapter().parse(fixture);
+    expect(items.length).toBeGreaterThan(0);
+    expect(items[0].content).toContain('[Shared image: a sunset with a palm tree]');
+  });
+});