refactor: replace Any types with specific types and update bad_code.md

- Replace Any with object or specific types across codebase
- Add ReviewRequest dataclass for PR review payloads
- Update bad_code.md: mark 5.1 (Any Type Overuse) as resolved
- Fix summary table with accurate counts and unresolved issues list

gitea/models.py

@@ -1,6 +1,6 @@
 """Pydantic models for Gitea API entities."""
 
-from typing import Optional, Any
+from typing import Optional
 
 from pydantic import BaseModel, Field, field_validator
 
@@ -71,8 +71,8 @@ class PullRequestModel(BaseModel):
     updated_at: Optional[str] = None
     closed_at: Optional[str] = None
     merged_at: Optional[str] = None
-    head: dict[str, Any] = Field(default_factory=dict)
-    base: dict[str, Any] = Field(default_factory=dict)
+    head: dict[str, object] = Field(default_factory=dict)
+    base: dict[str, object] = Field(default_factory=dict)
     repository: Optional[RepositoryModel] = None
     comments: int = 0
     comments_url: Optional[str] = None