chore(quality): apply ruff autofixes and formatting (29 fixes, 41 files reformatted)

backend/app/schemas/contact.py

@@ -1,10 +1,11 @@
 """Pydantic schemas for contacts and tags."""
 
-from pydantic import BaseModel, Field, EmailStr
+from pydantic import BaseModel, Field
 
 
 class TagResponse(BaseModel):
     """Public tag representation."""
+
     id: str
     name: str
     color: str | None = None
@@ -14,6 +15,7 @@ class TagResponse(BaseModel):
 
 class ContactCreateRequest(BaseModel):
     """Request body for creating a new contact."""
+
     type: str = Field(..., pattern="^(company|person)$")
     company_name: str | None = Field(None, max_length=255)
     first_name: str | None = Field(None, max_length=100)
@@ -39,6 +41,7 @@ class ContactCreateRequest(BaseModel):
 
 class ContactUpdateRequest(BaseModel):
     """Request body for updating an existing contact."""
+
     type: str | None = Field(None, pattern="^(company|person)$")
     company_name: str | None = Field(None, max_length=255)
     first_name: str | None = Field(None, max_length=100)
@@ -64,6 +67,7 @@ class ContactUpdateRequest(BaseModel):
 
 class ContactResponse(BaseModel):
     """Public contact representation with tags."""
+
     id: str
     account_id: str
     type: str
@@ -95,6 +99,7 @@ class ContactResponse(BaseModel):
 
 class ContactListResponse(BaseModel):
     """Paginated list of contacts."""
+
     items: list[ContactResponse]
     total: int
     page: int