test(integration): Verify history persistence and AI context inclusion

tests/test_ai_context_history.py

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+import pytest
+import tomli_w
+from pathlib import Path
+import aggregate
+import project_manager
+
+def test_aggregate_includes_segregated_history(tmp_path):
+    proj_path = tmp_path / "manual_slop.toml"
+    hist_path = tmp_path / "manual_slop_history.toml"
+    
+    # Setup segregated project
+    proj_data = project_manager.default_project("test-aggregate")
+    proj_data["discussion"]["discussions"]["main"]["history"] = ["@2026-02-24T14:00:00\nUser:\nShow me history"]
+    
+    # Save (will segregate)
+    project_manager.save_project(proj_data, proj_path)
+    
+    # Run aggregate
+    loaded_proj = project_manager.load_project(proj_path)
+    config = project_manager.flat_config(loaded_proj)
+    
+    markdown, output_file, file_items = aggregate.run(config)
+    
+    assert "## Discussion History" in markdown
+    assert "Show me history" in markdown