Refactor to manager-centric model, add team calendar for all users

Key changes:
- Removed office-centric model (deleted offices.py, office-rules)
- Renamed to team-rules, managers are part of their own team
- Team calendar visible to all (read-only for employees)
- Admins can have a manager assigned

database/connection.py

@@ -36,4 +36,7 @@ def get_db_session():
 def init_db():
     """Create all tables"""
     from database.models import Base
+
+    print(f"[init_db] Initializing database at {config.DATABASE_URL}")
     Base.metadata.create_all(bind=engine)
+    print(f"[init_db] Tables created: {list(Base.metadata.tables.keys())}")

database/models.py

@@ -17,7 +17,7 @@ class User(Base):
     password_hash = Column(Text)
     name = Column(Text)
     role = Column(Text, nullable=False, default="employee")  # admin, manager, employee
-    office_id = Column(Text, ForeignKey("offices.id"))
+    manager_id = Column(Text, ForeignKey("users.id"))  # Who manages this user (any user can have a manager)
 
     # Manager-specific fields (only relevant for role='manager')
     manager_parking_quota = Column(Integer, default=0)  # Number of spots this manager controls
@@ -37,51 +37,13 @@ class User(Base):
     updated_at = Column(Text)
 
     # Relationships
-    office = relationship("Office", back_populates="users")
+    manager = relationship("User", remote_side=[id], backref="managed_users")
     presences = relationship("UserPresence", back_populates="user", cascade="all, delete-orphan")
     assignments = relationship("DailyParkingAssignment", back_populates="user", foreign_keys="DailyParkingAssignment.user_id")
-    managed_offices = relationship("OfficeMembership", back_populates="user", cascade="all, delete-orphan")
 
     __table_args__ = (
         Index('idx_user_email', 'email'),
-        Index('idx_user_office', 'office_id'),
-    )
-
-
-class Office(Base):
-    """Office locations - containers for grouping employees"""
-    __tablename__ = "offices"
-
-    id = Column(Text, primary_key=True)
-    name = Column(Text, nullable=False)
-    location = Column(Text)
-    # Note: parking_spots removed - spots are now managed at manager level
-
-    created_at = Column(Text)
-    updated_at = Column(Text)
-
-    # Relationships
-    users = relationship("User", back_populates="office")
-    managers = relationship("OfficeMembership", back_populates="office", cascade="all, delete-orphan")
-
-
-class OfficeMembership(Base):
-    """Manager-Office relationship (which managers manage which offices)"""
-    __tablename__ = "office_memberships"
-
-    id = Column(Text, primary_key=True)
-    user_id = Column(Text, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
-    office_id = Column(Text, ForeignKey("offices.id", ondelete="CASCADE"), nullable=False)
-    created_at = Column(Text)
-
-    # Relationships
-    user = relationship("User", back_populates="managed_offices")
-    office = relationship("Office", back_populates="managers")
-
-    __table_args__ = (
-        Index('idx_membership_user', 'user_id'),
-        Index('idx_membership_office', 'office_id'),
-        Index('idx_membership_unique', 'user_id', 'office_id', unique=True),
+        Index('idx_user_manager', 'manager_id'),
     )
 
 
@@ -128,7 +90,7 @@ class DailyParkingAssignment(Base):
 
 
 class ManagerClosingDay(Base):
-    """Specific date closing days for a manager's offices (holidays, special closures)"""
+    """Specific date closing days for a manager's parking pool (holidays, special closures)"""
     __tablename__ = "manager_closing_days"
 
     id = Column(Text, primary_key=True)
@@ -145,7 +107,7 @@ class ManagerClosingDay(Base):
 
 
 class ManagerWeeklyClosingDay(Base):
-    """Weekly recurring closing days for a manager's offices (e.g., Saturday and Sunday)"""
+    """Weekly recurring closing days for a manager's parking pool (e.g., Saturday and Sunday)"""
     __tablename__ = "manager_weekly_closing_days"
 
     id = Column(Text, primary_key=True)