feat: bump client-services (accumulated feature work + deploy fixes)

Snapshot of in-progress work across local_backend, manager_dashboard,
and waiter_pwa (pricing, chat, fiscal, prep zones, recovery codes, CRM,
inventory, permissions), plus the nginx/docker-compose deploy fixes for
the Unraid + NPM reverse-proxy setup.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

local_backend/models/chat.py

@@ -0,0 +1,57 @@
+from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Text, Boolean
+from sqlalchemy.orm import relationship
+from datetime import datetime, timezone
+from database import Base
+
+
+def _utcnow():
+    return datetime.now(timezone.utc)
+
+
+class Conversation(Base):
+    __tablename__ = "conversations"
+
+    id = Column(Integer, primary_key=True, index=True)
+    type = Column(String, nullable=False, default="direct")  # 'direct' | 'group'
+    name = Column(String, nullable=True)                      # required for group
+    is_system = Column(Boolean, nullable=False, default=False)
+    created_by = Column(Integer, ForeignKey("users.id"), nullable=True)
+    created_at = Column(DateTime(timezone=True), default=_utcnow)
+
+    participants = relationship(
+        "ConversationParticipant",
+        back_populates="conversation",
+        cascade="all, delete-orphan",
+    )
+    messages = relationship(
+        "ChatMessage",
+        back_populates="conversation",
+        cascade="all, delete-orphan",
+    )
+
+
+class ConversationParticipant(Base):
+    __tablename__ = "conversation_participants"
+
+    id = Column(Integer, primary_key=True, index=True)
+    conversation_id = Column(Integer, ForeignKey("conversations.id"), nullable=False)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    joined_at = Column(DateTime(timezone=True), default=_utcnow)
+    last_read_at = Column(DateTime(timezone=True), nullable=True)
+
+    conversation = relationship("Conversation", back_populates="participants")
+    user = relationship("User")
+
+
+class ChatMessage(Base):
+    __tablename__ = "chat_messages"
+
+    id = Column(Integer, primary_key=True, index=True)
+    conversation_id = Column(Integer, ForeignKey("conversations.id"), nullable=False)
+    sender_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    body = Column(Text, nullable=False)
+    sent_at = Column(DateTime(timezone=True), default=_utcnow)
+    deleted_at = Column(DateTime(timezone=True), nullable=True)
+
+    conversation = relationship("Conversation", back_populates="messages")
+    sender = relationship("User")