chore: anchor fresh-start history to upstream

tests/tools/test_patch_parser.py

@@ -435,70 +435,6 @@ class TestValidationPhase:
         assert result.success is False
         assert "hunk 2" in result.error.lower()
 
-    def test_add_onto_existing_file_fails_and_preserves_contents(self):
-        """An Add targeting a path that already exists must fail validation and
-        leave the original bytes untouched (no silent overwrite)."""
-        patch = """\
-*** Begin Patch
-*** Add File: exists.py
-+brand new
-+content
-*** End Patch"""
-        ops, err = parse_v4a_patch(patch)
-        assert err is None
-
-        original = "def keep_me():\n    return 1\n"
-        written = {}
-
-        class FakeFileOps:
-            def read_file_raw(self, path):
-                if path == "exists.py":
-                    return SimpleNamespace(content=original, error=None)
-                return SimpleNamespace(content=None, error=f"File not found: {path}")
-
-            def write_file(self, path, content):
-                written[path] = content
-                return SimpleNamespace(error=None)
-
-        result = apply_v4a_operations(ops, FakeFileOps())
-        assert result.success is False
-        assert written == {}, f"No file should have been written, got: {list(written.keys())}"
-        assert "already exists" in result.error
-        assert "validation failed" in result.error.lower()
-
-    def test_delete_then_add_same_path_still_validates(self):
-        """A patch that deletes a file and re-adds the same path (a legitimate
-        rewrite idiom) must not trip the Add-onto-existing guard: the earlier
-        DELETE frees the path in the validation overlay."""
-        patch = """\
-*** Begin Patch
-*** Delete File: rewrite.py
-*** Add File: rewrite.py
-+fresh = True
-*** End Patch"""
-        ops, err = parse_v4a_patch(patch)
-        assert err is None
-
-        state = {"rewrite.py": "old = True\n"}
-
-        class FakeFileOps:
-            def read_file_raw(self, path):
-                if path in state:
-                    return SimpleNamespace(content=state[path], error=None)
-                return SimpleNamespace(content=None, error=f"File not found: {path}")
-
-            def delete_file(self, path):
-                state.pop(path, None)
-                return SimpleNamespace(error=None)
-
-            def write_file(self, path, content, pre_content=None):
-                state[path] = content
-                return SimpleNamespace(error=None)
-
-        result = apply_v4a_operations(ops, FakeFileOps())
-        assert result.success is True, result.error
-        assert state["rewrite.py"] == "fresh = True"
-
 
 class TestApplyDelete:
     """Tests for _apply_delete producing a real unified diff."""
@@ -633,9 +569,6 @@ class TestV4ALspDiagnosticsPropagation:
         )
 
         class FakeFileOps:
-            def read_file_raw(self, path):
-                return SimpleNamespace(content=None, error=f"File not found: {path}")
-
             def write_file(self, path, content, pre_content=None):
                 return SimpleNamespace(error=None, lsp_diagnostics=diag_block)
 
@@ -688,9 +621,6 @@ class TestV4ALspDiagnosticsPropagation:
         ops = self._build_ops_writing("foo.py", "x = 1\n")
 
         class FakeFileOps:
-            def read_file_raw(self, path):
-                return SimpleNamespace(content=None, error=f"File not found: {path}")
-
             def write_file(self, path, content, pre_content=None):
                 # lsp_diagnostics omitted entirely (older WriteResult shape).
                 return SimpleNamespace(error=None)
@@ -724,9 +654,6 @@ class TestV4ALspDiagnosticsPropagation:
         }
 
         class FakeFileOps:
-            def read_file_raw(self, path):
-                return SimpleNamespace(content=None, error=f"File not found: {path}")
-
             def write_file(self, path, content, pre_content=None):
                 return SimpleNamespace(error=None, lsp_diagnostics=per_file[path])