feat(filter): multi-select filtering support

Exact match fields (status, track, team, creator_id) now accept
list[str] for multi-select: status: ["Regular", "Mentor"].

- list value → OR match (cell in values)
- str value → exact match or substring search (unchanged)
- Search fields (name, email, etc.) remain str for LIKE matching

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ImTotem

src/bcsd_api/filter/base.py

@@ -30,8 +30,10 @@ class PagedResponse(BaseModel, Generic[T]):
     size: int
 
 
-def _matches_row(row: dict, key: str, value: str, search: set[str]) -> bool:
+def _matches_row(row: dict, key: str, value, search: set[str]) -> bool:
     cell = row.get(key, "")
+    if isinstance(value, list):
+        return cell in value
     if key in search:
         return value.lower() in cell.lower()
     return cell == value

src/bcsd_api/filter/links.py

@@ -4,7 +4,7 @@
 
 
 class LinkFilter(BaseFilter):
-    creator_id: str | None = None
+    creator_id: list[str] | str | None = None
     expired: str | None = None
     title: str | None = None
     code: str | None = None

src/bcsd_api/filter/members.py

@@ -2,9 +2,9 @@
 
 
 class MemberFilter(BaseFilter):
-    status: str | None = None
-    track: str | None = None
-    team: str | None = None
+    status: list[str] | str | None = None
+    track: list[str] | str | None = None
+    team: list[str] | str | None = None
     name: str | None = None
     email: str | None = None
     department: str | None = None

src/bcsd_api/member/types.py

@@ -54,9 +54,9 @@ class MemberFilterInput:
     page: int = 1
     size: int = 20
     sorts: list[SortFieldInput] | None = None
-    status: str | None = None
-    track: str | None = None
-    team: str | None = None
+    status: list[str] | None = None
+    track: list[str] | None = None
+    team: list[str] | None = None
     name: str | None = None
     email: str | None = None
     department: str | None = None

src/bcsd_api/shorten/types.py

@@ -56,7 +56,7 @@ class LinkFilterInput:
     page: int = 1
     size: int = 20
     sorts: list[SortFieldInput] | None = None
-    creator_id: str | None = None
+    creator_id: list[str] | None = None
     expired: str | None = None
     title: str | None = None
     code: str | None = None