feat(client,setting): complete Phase 2 with partitioned client_follow_logs
- apps/client (11 models): Client, ClientContact, ClientRequirement,
ClientSchoolPreference, ClientFollowLog (partitioned),
ClientFollowLogAttachment, ClientViewing, ClientPropertyMatch,
ClientStatusLog, ClientFavoriteFolder, ClientFolderItem
- apps/client/0002 RunSQL: PARTITION BY RANGE(created_at) for
client_follow_logs + monthly partitions + default; triggers
update_client_last_follow + update_client_viewing_progress;
partial unique index on client_no WHERE deleted_at IS NULL
- apps/setting (4 models): LookupGroup, LookupItem, TenantSetting,
FieldRequirementRule (tenant schema only per spec)
manage.py check green; all 9 Phase 2 apps complete.
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