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.

apps/client/models/contacts.py

@@ -0,0 +1,143 @@
+from django.contrib.postgres.fields import ArrayField
+from django.db import models
+
+from core.enums import (
+    ClientBuildingAgeRange,
+    ClientContactGender,
+    ClientDecoration,
+    ClientFloorPreference,
+    ClientOrientation,
+    ClientRequirementType,
+)
+from core.models.base import UUIDPrimaryKeyModel
+
+
+class ClientContact(UUIDPrimaryKeyModel):
+    client = models.ForeignKey(
+        "fonrey_client.Client", on_delete=models.CASCADE, related_name="contacts"
+    )
+    sort_order = models.SmallIntegerField(default=0)
+    name = models.CharField(max_length=50)
+    gender = models.CharField(
+        max_length=10, choices=ClientContactGender.choices, default=ClientContactGender.MALE
+    )
+
+    phone_enc = models.BinaryField()
+    phone_hash = models.CharField(max_length=64)
+    phone_country_code = models.CharField(max_length=10, default="+86")
+    phone_is_invalid = models.BooleanField(default=False)
+
+    phone2_enc = models.BinaryField(null=True, blank=True)
+    phone2_hash = models.CharField(max_length=64, blank=True, default="")
+
+    wechat = models.CharField(max_length=100, blank=True, default="")
+    qq = models.CharField(max_length=20, blank=True, default="")
+    remarks = models.CharField(max_length=200, blank=True, default="")
+
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+    deleted_at = models.DateTimeField(null=True, blank=True)
+    created_by = models.ForeignKey(
+        "org.Staff",
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name="created_client_contacts",
+    )
+
+    class Meta:
+        db_table = "client_contacts"
+        indexes = [
+            models.Index(fields=["phone_hash"], name="idx_cc_phone_hash"),
+            models.Index(fields=["phone2_hash"], name="idx_cc_phone2_hash"),
+            models.Index(fields=["client"], name="idx_cc_client"),
+        ]
+
+
+class ClientRequirement(UUIDPrimaryKeyModel):
+    client = models.ForeignKey(
+        "fonrey_client.Client", on_delete=models.CASCADE, related_name="requirements"
+    )
+    requirement_type = models.CharField(
+        max_length=20, choices=ClientRequirementType.choices
+    )
+    is_primary = models.BooleanField(default=True)
+
+    budget_min = models.DecimalField(
+        max_digits=12, decimal_places=2, null=True, blank=True
+    )
+    budget_max = models.DecimalField(
+        max_digits=12, decimal_places=2, null=True, blank=True
+    )
+    area_min = models.DecimalField(
+        max_digits=8, decimal_places=2, null=True, blank=True
+    )
+    area_max = models.DecimalField(
+        max_digits=8, decimal_places=2, null=True, blank=True
+    )
+
+    bedroom_counts = ArrayField(
+        models.SmallIntegerField(), blank=True, default=list
+    )
+    floor_preferences = ArrayField(
+        models.CharField(max_length=20, choices=ClientFloorPreference.choices),
+        blank=True,
+        default=list,
+    )
+    orientations = ArrayField(
+        models.CharField(max_length=10, choices=ClientOrientation.choices),
+        blank=True,
+        default=list,
+    )
+    decorations = ArrayField(
+        models.CharField(max_length=10, choices=ClientDecoration.choices),
+        blank=True,
+        default=list,
+    )
+    building_age_ranges = ArrayField(
+        models.CharField(max_length=20, choices=ClientBuildingAgeRange.choices),
+        blank=True,
+        default=list,
+    )
+
+    intent_district_ids = ArrayField(
+        models.UUIDField(), blank=True, default=list
+    )
+    intent_business_area_ids = ArrayField(
+        models.UUIDField(), blank=True, default=list
+    )
+    intent_complex_names = models.TextField(blank=True, default="")
+    transportation = models.CharField(max_length=50, blank=True, default="")
+    intent_school_names = models.TextField(blank=True, default="")
+    school_enrollment_date = models.DateField(null=True, blank=True)
+    traffic_preference = models.TextField(blank=True, default="")
+    requirement_notes = models.CharField(max_length=200, blank=True, default="")
+
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        db_table = "client_requirements"
+        indexes = [
+            models.Index(fields=["client"], name="idx_creq_client"),
+            models.Index(fields=["requirement_type", "client"], name="idx_creq_type"),
+            models.Index(fields=["budget_min", "budget_max"], name="idx_creq_budget"),
+            models.Index(fields=["area_min", "area_max"], name="idx_creq_area"),
+        ]
+
+
+class ClientSchoolPreference(UUIDPrimaryKeyModel):
+    requirement = models.ForeignKey(
+        ClientRequirement,
+        on_delete=models.CASCADE,
+        related_name="school_preferences",
+    )
+    school_id = models.UUIDField(null=True, blank=True)
+    school_name = models.CharField(max_length=100)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        db_table = "client_school_preferences"
+        indexes = [
+            models.Index(fields=["requirement"], name="idx_csp_requirement"),
+        ]