DRY pass #2, batch 8: inkwell.notes stops re-exporting its siblings (#5372)

notes/__init__ re-exported 17 names so it could stand in for the old single
module. Only sync.py and test_notes.py used that, and each now imports from
the module that defines the name; __all__ and the nine imports __init__ held
only for it go. sync.py also drops sa_delete, func, live and NoteLabel,
unused since 8eff5f6 (#5382). The integration test's patch on
inkwell.notes.schedule_unfurls stays: the routes call it from there.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_notes.py

@@ -11,27 +11,27 @@ from inkwell.colors import NOTE_COLORS
 from inkwell.models.note import Note
 from inkwell.notes.checklist import append_item, parse_items, set_item_checked, strip_marker
 from inkwell.unfurl_queue import detect_urls
-from inkwell.notes import (
-    _ImportBudget,
+from inkwell.colors import normalize_color
+from inkwell.notes.helpers import (
     _attachment_ext,
     _header_filename,
+    _safe_filename,
+    _slugify,
+    derive_display_title,
+    is_empty_note,
+    parse_list_items,
+)
+from inkwell.notes.import_export import (
+    NATIVE_APP_MARKERS,
+    _ImportBudget,
     _keep_spec,
     _native_spec,
     _note_markdown,
     _read_import_specs,
-    _safe_filename,
-    _slugify,
     _usec_to_dt,
-    derive_display_title,
-    is_empty_note,
-    next_occurrence,
-    normalize_color,
-    normalize_recurrence,
-    parse_list_items,
-    parse_tags,
 )
-from inkwell.notes.import_export import NATIVE_APP_MARKERS
-from inkwell.notes.tags import split_body_tags
+from inkwell.notes.recurrence import next_occurrence, normalize_recurrence
+from inkwell.notes.tags import parse_tags, split_body_tags
 
 
 @pytest.fixture