init biliup-next

src/biliup_next/infra/comment_flag_migration.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+
+class CommentFlagMigrationService:
+    def migrate(self, session_dir: Path) -> dict[str, int]:
+        migrated_split_flags = 0
+        legacy_untracked_full = 0
+        if not session_dir.exists():
+            return {"migrated_split_flags": 0, "legacy_untracked_full": 0}
+
+        for folder in sorted(p for p in session_dir.iterdir() if p.is_dir()):
+            comment_done = folder / "comment_done.flag"
+            split_done = folder / "comment_split_done.flag"
+            full_done = folder / "comment_full_done.flag"
+            if not comment_done.exists():
+                continue
+            if not split_done.exists():
+                split_done.touch()
+                migrated_split_flags += 1
+            if not full_done.exists():
+                legacy_untracked_full += 1
+        return {
+            "migrated_split_flags": migrated_split_flags,
+            "legacy_untracked_full": legacy_untracked_full,
+        }