feat(calls): voice_clip 手动匹配(voice_clip↔customer 本地关联写操作)

- VoiceClip: 新增 matched_friend_id 列 (String(128), nullable) + alembic 迁移 b3c4d5e6f7a8
- PATCH /api/voice-clips/{id}/match: friend_id 关联 / null 取消 (本地写, 不回写云客)
- GET /api/voice-clips: 批量解析 matched_friend_name (remark>nickname>real>id)
- VoiceClipModal: 已匹配客户列 + 匹配/取消匹配按钮 + 嵌套客户选择 picker (默认按员工列客户, 名搜索走 /search)
- 测试: 17 passed (新增 7 个 match 用例覆盖 set/clear/name 解析/404)

Co-Authored-By: Claude <noreply@anthropic.com>

yunke-server/migrations/versions/b3c4d5e6f7a8_voice_clip_matched_friend_id.py

@@ -0,0 +1,35 @@
+"""voice_clip matched_friend_id
+
+Revision ID: b3c4d5e6f7a8
+Revises: a1b2c3d4e5f6
+Create Date: 2026-08-10 00:00:00.000000
+
+"""
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'b3c4d5e6f7a8'
+down_revision: str | Sequence[str] | None = 'a1b2c3d4e5f6'
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # LOCAL-only 手动匹配 column: references customer.friend_id. NULL = unmatched.
+    # batch_alter_table keeps this portable across SQLite (dev/test, table-recreate)
+    # and MySQL (prod, direct ALTER). See env.py render_as_batch wiring.
+    with op.batch_alter_table('voice_clip', schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column('matched_friend_id', sa.String(length=128), nullable=True)
+        )
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    with op.batch_alter_table('voice_clip', schema=None) as batch_op:
+        batch_op.drop_column('matched_friend_id')