feat(mma): Finalize Phase 1 with AST-based outline and improved tiered selection

tests/test_tiered_context.py

@@ -107,3 +107,30 @@ def test_build_files_section_with_dicts(tmp_path):
     result = build_files_section(tmp_path, files_config)
     assert "content1" in result
     assert "file1.txt" in result
+
+def test_tiered_context_by_tier_field():
+    file_items = [
+        {"path": Path("tier1_file.txt"), "entry": "tier1_file.txt", "content": "Full Tier 1 Content\nLine 2", "tier": 1},
+        {"path": Path("tier3_file.txt"), "entry": "tier3_file.txt", "content": "Full Tier 3 Content\nLine 2\nLine 3\nLine 4\nLine 5\nLine 6\nLine 7\nLine 8\nLine 9\nLine 10", "tier": 3},
+        {"path": Path("other.txt"), "entry": "other.txt", "content": "Other Content\nLine 2\nLine 3\nLine 4\nLine 5\nLine 6\nLine 7\nLine 8\nLine 9\nLine 10", "tier": None}
+    ]
+    
+    # Test Tier 1 Context
+    result_t1 = build_tier1_context(file_items, Path("."), [], [])
+    assert "Full Tier 1 Content" in result_t1
+    assert "Line 2" in result_t1 # In full
+    
+    # tier3_file.txt should be summarized
+    assert "tier3_file.txt" in result_t1
+    assert "preview:" in result_t1
+    assert "Line 9" not in result_t1 # Only first 8 lines in preview
+    
+    # Test Tier 3 Context
+    result_t3 = build_tier3_context(file_items, Path("."), [], [], focus_files=[])
+    assert "Full Tier 3 Content" in result_t3
+    assert "Line 10" in result_t3 # In full
+    
+    # tier1_file.txt should be summarized
+    assert "tier1_file.txt" in result_t3
+    assert "preview:" in result_t3
+    assert "Full Tier 1 Content" in result_t3 # It's short, so it's in preview