feat(bat-019): REQ-044 GET /v1/assets require_read + REQ-045 GET /v1/daemons caller-scope

REQ-044: list_catalog_assets 의존성을 require_admin → require_read로 완화.
asset 쓰기(POST/PATCH/DELETE)는 require_admin 유지.

REQ-045: GET /v1/daemons 신규 엔드포인트 — caller 소유 데몬만 반환(require_read).
user_id=None(env 토큰)은 빈 목록 200. DaemonResponse/DaemonListResponse 스키마 추가.

기존 테스트(test_v1.py, test_asset_catalog.py, test_daemon_assignment.py, test_tags_master.py)
REQ-044 권한 완화에 맞게 업데이트. test_v1_daemons.py 신규 추가(13 케이스).

pytest 472 passed, 0 failed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5

app/schemas/v1.py

@@ -310,3 +310,19 @@ class HoldingsCostBasisResponse(BaseModel):
     total_cost_basis: float | None = None
     cost_basis_from: datetime | None = None
     data_completeness_warning: str | None = None
+
+
+# ---------------------------------------------------------------------------
+# GET /v1/daemons (REQ-045)
+# ---------------------------------------------------------------------------
+
+class DaemonResponse(BaseModel):
+    id: str
+    daemon_slug: str
+    display_name: str | None = None
+    is_active: bool
+
+
+class DaemonListResponse(BaseModel):
+    daemons: list[DaemonResponse]
+    total: int