refactor: remove all inline comments from code

app/common/error_handler.py

@@ -1,5 +1,3 @@
-"""Common error response schema and exception handlers."""
-
 from datetime import datetime
 
 from fastapi import FastAPI, Request
@@ -11,8 +9,6 @@ from app.core.exceptions import AppException
 
 
 class ErrorResponse(BaseModel):
-    """Standard error response format."""
-
     status_code: int
     message: str
     details: dict | None = None
@@ -20,7 +16,6 @@ class ErrorResponse(BaseModel):
 
 
 async def app_exception_handler(request: Request, exc: AppException) -> JSONResponse:
-    """Handle application exceptions with standard response."""
     return JSONResponse(
         status_code=exc.status_code,
         content={
@@ -32,7 +27,6 @@ async def app_exception_handler(request: Request, exc: AppException) -> JSONResp
 
 
 async def http_exception_handler(request: Request, exc: HTTPException) -> JSONResponse:
-    """Handle HTTP exceptions with standard response."""
     return JSONResponse(
         status_code=exc.status_code,
         content={
@@ -44,7 +38,6 @@ async def http_exception_handler(request: Request, exc: HTTPException) -> JSONRe
 
 
 def register_exception_handlers(app: FastAPI):
-    """Register all exception handlers with FastAPI app."""
     app.add_exception_handler(
         AppException,
         app_exception_handler,  # type: ignore[arg-type]