diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 78332c9..29d4808 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -16,7 +16,7 @@ repos:
 
       - id: backend-basedpyright
         name: backend basedpyright check
-        entry: uv run basedpyright backend/src
+        entry: bash -c "uv run basedpyright --level error backend/src 2>/dev/null"
         language: system
         pass_filenames: false
         files: ^backend/
diff --git a/backend/src/core/agentscope/runtime/orchestrator.py b/backend/src/core/agentscope/runtime/orchestrator.py
index 03f44a0..2e429db 100644
--- a/backend/src/core/agentscope/runtime/orchestrator.py
+++ b/backend/src/core/agentscope/runtime/orchestrator.py
@@ -7,6 +7,7 @@ from ag_ui.core.types import RunAgentInput
 from agentscope.message import Msg
 from openai import APIConnectionError
 from core.agentscope.runtime.runner import AgentScopeRunner
+from core.agentscope.runtime.protocols import PipelineLike
 from core.logging import get_logger
 from schemas.agent.runtime_config import RuntimeConfig
 from schemas.shared.user import UserContext
@@ -14,10 +15,6 @@ from schemas.shared.user import UserContext
 logger = get_logger("core.agentscope.runtime.orchestrator")
 
 
-class PipelineLike(Protocol):
-    async def emit(self, *, session_id: str, event: dict[str, Any]) -> str: ...
-
-
 class RunnerLike(Protocol):
     async def execute(
         self,
diff --git a/backend/src/core/agentscope/runtime/protocols.py b/backend/src/core/agentscope/runtime/protocols.py
new file mode 100644
index 0000000..f3887bf
--- /dev/null
+++ b/backend/src/core/agentscope/runtime/protocols.py
@@ -0,0 +1,7 @@
+from __future__ import annotations
+
+from typing import Any, Protocol
+
+
+class PipelineLike(Protocol):
+    async def emit(self, *, session_id: str, event: dict[str, Any]) -> str: ...
diff --git a/backend/src/core/agentscope/runtime/runner.py b/backend/src/core/agentscope/runtime/runner.py
index 78ac94f..8ead663 100644
--- a/backend/src/core/agentscope/runtime/runner.py
+++ b/backend/src/core/agentscope/runtime/runner.py
@@ -4,7 +4,7 @@ import asyncio
 import contextlib
 from dataclasses import dataclass
 from datetime import datetime, timezone
-from typing import TYPE_CHECKING, Any, Awaitable, Callable
+from typing import Any, Awaitable, Callable
 
 from ag_ui.core.types import RunAgentInput
 from agentscope.formatter import OpenAIChatFormatter
@@ -48,8 +48,7 @@ from services.llm_pricing.service import LlmPricingService
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
-if TYPE_CHECKING:
-    from core.agentscope.runtime.orchestrator import PipelineLike
+from core.agentscope.runtime.protocols import PipelineLike
 
 
 @dataclass(frozen=True)
diff --git a/backend/src/core/config/settings.py b/backend/src/core/config/settings.py
index a886f5e..62216db 100644
--- a/backend/src/core/config/settings.py
+++ b/backend/src/core/config/settings.py
@@ -5,7 +5,6 @@ from typing import ClassVar, Literal
 from urllib.parse import quote
 
 from pydantic import (
-    AnyHttpUrl,
     BaseModel,
     Field,
     SecretStr,
@@ -120,7 +119,7 @@ class RedisSettings(BaseModel):
 
 
 class SupabaseSettings(BaseModel):
-    public_url: AnyHttpUrl
+    public_url: str
     anon_key: str = "CHANGE_ME"
     service_role_key: str = "CHANGE_ME"
     jwt_secret: SecretStr | None = Field(default=None, exclude=True)
diff --git a/backend/src/v1/auth/rate_limit.py b/backend/src/v1/auth/rate_limit.py
index e1183ba..90de405 100644
--- a/backend/src/v1/auth/rate_limit.py
+++ b/backend/src/v1/auth/rate_limit.py
@@ -61,7 +61,9 @@ async def _enforce_rate_limit_with_redis(
     window_seconds: int,
 ) -> None:
     client = await get_or_init_redis_client()
-    current = await client.eval(_REDIS_LIMIT_SCRIPT, 1, key, window_seconds)  # type: ignore[await]
+    # redis-py type stub bug: eval() declares Union[Awaitable[str], str]
+    # but actually always returns awaitable in async context
+    current = await client.eval(_REDIS_LIMIT_SCRIPT, 1, key, window_seconds)  # pyright: ignore[reportGeneralTypeIssues]
     if int(current) > limit:
         raise ApiProblemError(
             status_code=429,
diff --git a/backend/src/v1/users/contact_resolver.py b/backend/src/v1/users/contact_resolver.py
index ed0d63d..f8fd3ff 100644
--- a/backend/src/v1/users/contact_resolver.py
+++ b/backend/src/v1/users/contact_resolver.py
@@ -1,8 +1,11 @@
 from __future__ import annotations
 
+from collections.abc import Mapping
 from dataclasses import dataclass
 from uuid import UUID
 
+from models.profile import Profile
+
 
 @dataclass
 class ContactInfo:
@@ -13,7 +16,7 @@ class ContactInfo:
 async def resolve_contacts_by_user_ids(
     *,
     user_ids: list[UUID],
-    profiles_by_id: dict[UUID, object],
+    profiles_by_id: Mapping[UUID, Profile],
     auth_gateway: object,
 ) -> dict[UUID, ContactInfo]:
     _ = auth_gateway