fix(converter): 保留來源副檔名避免 Markdown 檔名衝突

將輸出檔名改為保留來源完整檔名後再附加 .md。\n這樣可避免像 A.docx 與 A.xlsx 轉出後發生同名覆蓋，並同步更新相關測試。

Author: flier268

app/converter.py

@@ -21,7 +21,7 @@ def is_supported(self, task: SyncTask, path: Path) -> bool:
 
     def target_path_for(self, task: SyncTask, source_path: Path) -> Path:
         relative = source_path.relative_to(task.paths.source_path())
-        return task.paths.output_dir_path() / relative.with_suffix(".md")
+        return task.paths.output_dir_path() / relative.parent / f"{relative.name}.md"
 
     def convert_path(self, task: SyncTask, source_path: Path) -> str:
         ext = source_path.suffix.lower()

tests/test_converter.py

@@ -33,7 +33,24 @@ def test_target_path_for(tmp_path: Path) -> None:
 
     target = converter.target_path_for(task, source_path)
 
-    assert target == Path(task.paths.target_root) / "md" / "nested" / "report.md"
+    assert target == Path(task.paths.target_root) / "md" / "nested" / "report.docx.md"
+
+
+def test_target_path_for_keeps_source_extension_to_avoid_collisions(tmp_path: Path) -> None:
+    task = sample_task(tmp_path)
+    converter = Converter()
+    docx_path = Path(task.paths.source_dir) / "nested" / "A.docx"
+    xlsx_path = Path(task.paths.source_dir) / "nested" / "A.xlsx"
+    docx_path.parent.mkdir()
+    docx_path.write_text("placeholder", encoding="utf-8")
+    xlsx_path.write_text("placeholder", encoding="utf-8")
+
+    docx_target = converter.target_path_for(task, docx_path)
+    xlsx_target = converter.target_path_for(task, xlsx_path)
+
+    assert docx_target.name == "A.docx.md"
+    assert xlsx_target.name == "A.xlsx.md"
+    assert docx_target != xlsx_target
 
 
 def test_convert_text_file_to_markdown(tmp_path: Path) -> None:

tests/test_sync_engine.py

@@ -33,7 +33,7 @@ def test_sync_engine_copies_markdown_file(tmp_path: Path) -> None:
     engine.queued_paths[task.id or 0][source_file] = 0
     engine._process_task_queue(task)
 
-    target_file = Path(task.paths.target_root) / task.paths.output_subdir / "123.md"
+    target_file = Path(task.paths.target_root) / task.paths.output_subdir / "123.md.md"
     assert target_file.read_text(encoding="utf-8") == "hello\n"
 
 
@@ -50,7 +50,7 @@ def test_sync_engine_commits_inside_target_root(tmp_path: Path) -> None:
 
     assert engine.statuses[task.id or 0].last_error is None
     assert (Path(task.paths.target_root) / ".git").exists()
-    assert (Path(task.paths.target_root) / task.paths.output_subdir / "123.md").exists()
+    assert (Path(task.paths.target_root) / task.paths.output_subdir / "123.md.md").exists()
 
 
 def test_reload_tasks_clears_queue_on_disable_and_removes_deleted_task(tmp_path: Path) -> None: