feat: integrate learning module

tests/unit/opencode-message.test.ts

@@ -1,5 +1,9 @@
 import { describe, expect, it } from 'vitest';
-import { applyStreamingPartDeltaToMessage, normalizeOpencodeSessionMessages } from '@/lib/opencode-message';
+import {
+  applyStreamingPartDeltaToMessage,
+  applyStreamingPartToMessage,
+  normalizeOpencodeSessionMessages,
+} from '@/lib/opencode-message';
 
 describe('opencode message normalization', () => {
   it('keeps reasoning deltas as thinking content when the full part has not arrived yet', () => {
@@ -77,6 +81,71 @@ describe('opencode message normalization', () => {
     ]);
   });
 
+  it('keeps compaction-only messages out of the visible transcript', () => {
+    const messages = normalizeOpencodeSessionMessages([
+      {
+        info: {
+          id: 'msg_compaction',
+          role: 'assistant',
+          sessionID: 'ses_1',
+          time: { created: 1747040000000, completed: 1747040001000 },
+        },
+        parts: [
+          {
+            id: 'part_compaction',
+            type: 'compaction',
+            auto: true,
+            summary: 'PRIVATE COMPACTION SUMMARY',
+          },
+          { id: 'step_finish', type: 'step-finish' },
+        ],
+      },
+      {
+        id: 'legacy_compaction',
+        role: 'assistant',
+        content: [{ type: 'compaction', text: 'PRIVATE LEGACY SUMMARY' }],
+      },
+    ]);
+
+    expect(messages).toEqual([]);
+    expect(JSON.stringify(messages)).not.toContain('PRIVATE COMPACTION SUMMARY');
+    expect(JSON.stringify(messages)).not.toContain('PRIVATE LEGACY SUMMARY');
+  });
+
+  it('does not leak compaction text through streaming message projections', () => {
+    const input = {
+      sessionID: 'ses_1',
+      messageID: 'msg_compaction',
+      partID: 'part_compaction',
+      delta: 'PRIVATE COMPACTION SUMMARY',
+      part: {
+        id: 'part_compaction',
+        type: 'compaction',
+      },
+    };
+
+    expect(applyStreamingPartToMessage(null, input)).toBeNull();
+    expect(applyStreamingPartDeltaToMessage(null, input)).toBeNull();
+    expect(applyStreamingPartDeltaToMessage({
+      id: 'msg_compaction',
+      role: 'assistant',
+      content: [{ type: 'text', text: 'Visible text' }],
+    }, input)).toEqual({
+      id: 'msg_compaction',
+      role: 'assistant',
+      content: [{ type: 'text', text: 'Visible text' }],
+    });
+    expect(applyStreamingPartToMessage({
+      id: 'msg_compaction',
+      role: 'assistant',
+      content: [{ type: 'text', id: 'part_compaction', text: 'PRIVATE COMPACTION SUMMARY' }],
+    }, input)).toEqual({
+      id: 'msg_compaction',
+      role: 'assistant',
+      content: [],
+    });
+  });
+
   it('retains bounded runtime tool evidence without exposing raw tool state', () => {
     const messages = normalizeOpencodeSessionMessages([
       {