refactor(sharing): move import/export modules into sharing package

- Consolidate exporter.py, importer.py, importer_io.py, and url_importer.py under `cue_lib/sharing/`
- Add `cue_lib/sharing/__init__.py` to load submodules and re-export `CueImportManager`, `CueExportManager`, and `CueUrlImporter`
- Update all internal imports, type stubs, comments, and tests to use the new package paths
- Keep the public manager API unchanged

No behavioral changes; this is a pure structural refactor.

Author: guanzo

cue_lib/__init__.py

@@ -44,5 +44,6 @@
 from cue_lib import copy_paste
 from cue_lib import markers
 from cue_lib import trigger
+from cue_lib import sharing
 from cue_lib import runtime
 from cue_lib.ui import dialogs, displayables, icons, popper

cue_lib/constants.py

@@ -212,7 +212,7 @@ class CueContextType(object):
 CUE_IMPORT_MANIFEST_NAME = "manifest.json"
 
 # Characters kept from a SHA1 hex digest for file naming.  Shared by
-# db._preset_path and importer_io._cue_preset_files -- keep in sync.
+# db._preset_path and sharing.importer_io._cue_preset_files -- keep in sync.
 CUE_HASH_TRUNC_LEN = 8
 
 # Canonical checkbox order and labels for the 5 categories.  Labels are

cue_lib/cue_z.rpy

@@ -199,9 +199,7 @@ init -900 python:
         CueConfirmDialog, CueMergeDialog, CueIntensityGroupDialog, CueDialogs,
     )
     from cue_lib.intensity import CueIntensityManager
-    from cue_lib.importer import CueImportManager
-    from cue_lib.exporter import CueExportManager
-    from cue_lib.url_importer import CueUrlImporter
+    from cue_lib.sharing import CueImportManager, CueExportManager, CueUrlImporter
     from cue_lib.settings import CueSettings
     from cue_lib.backup import CueBackupManager
     from cue_lib.db import CueDatabase

cue_lib/sharing/__init__.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# cue_lib/sharing -- the import/export side of the mod.
+#
+# exporter.py builds a .zip import from this game's data; importer.py scans
+# imports/*.zip and activates one as a root-swap overlay or merges categories;
+# importer_io.py owns the pure .zip format logic + filesystem ops; and
+# url_importer.py downloads a .zip into the drop zone.  The package re-exports
+# the manager API so consumers keep importing from the package.
+#
+# Submodules are imported in dependency order (leaf-first) -- Ren'Py's
+# import_all() discovers modules through the package namespace, so they must
+# be loaded even when only the package name is imported.
+
+# pyright: reportUnusedImport=false
+
+from cue_lib.sharing import importer_io
+from cue_lib.sharing import exporter
+from cue_lib.sharing import importer
+from cue_lib.sharing import url_importer
+
+from cue_lib.sharing.exporter import CueExportManager
+from cue_lib.sharing.importer import CueImportManager
+from cue_lib.sharing.url_importer import CueUrlImporter

cue_lib/exporter.py cue_lib/sharing/exporter.pycue_lib/exporter.py renamed to cue_lib/sharing/exporter.py

@@ -13,7 +13,7 @@
 import threading
 
 from cue_lib.constants import CUE_IMPORT_CATEGORY_ORDER, CueExportFileTypes, CueExportScope
-from cue_lib.importer_io import (
+from cue_lib.sharing.importer_io import (
     _cue_build_import_zip,
     _cue_enumerate_import_files,
     _cue_replay_assets,

cue_lib/exporter.pyi cue_lib/sharing/exporter.pyicue_lib/exporter.pyi renamed to cue_lib/sharing/exporter.pyi

@@ -1,4 +1,4 @@
-# Type stub for cue_lib.exporter
+# Type stub for cue_lib.sharing.exporter
 from typing import Any, Dict, List, Set
 
 class CueExportManager(object):

cue_lib/importer.py cue_lib/sharing/importer.pycue_lib/importer.py renamed to cue_lib/sharing/importer.py

@@ -16,7 +16,7 @@
 
 from cue_lib.constants import CUE_IMPORT_MANIFEST_NAME, CueImportMatch
 from cue_lib.db import _atomic_json_write
-from cue_lib.importer_io import (
+from cue_lib.sharing.importer_io import (
     _cue_extract_import_zip,
     _cue_filter_contents,
     _cue_load_manifest,

cue_lib/importer.pyi cue_lib/sharing/importer.pyicue_lib/importer.pyi renamed to cue_lib/sharing/importer.pyi

@@ -1,4 +1,4 @@
-# Type stub for cue_lib.importer
+# Type stub for cue_lib.sharing.importer
 from typing import Any, Callable, Dict, List, Optional, Tuple
 
 def _imp_file_names(imp_dir: str) -> set: ...

cue_lib/importer_io.py cue_lib/sharing/importer_io.pycue_lib/importer_io.py renamed to cue_lib/sharing/importer_io.py

@@ -1,4 +1,4 @@
-# Type stub for cue_lib.importer_io
+# Type stub for cue_lib.sharing.importer_io
 from typing import Any, Dict, Final, List, Optional, Set, Tuple
 
 CUE_IMPORT_FORMAT_VERSION: Final = 1