Fix pyright type errors across codebase

- Add pyrightconfig.json for pyright 1.1.408 TOML parsing workaround
- Add NoReturn annotations to fatal() functions for proper type narrowing
- Add None checks and assertions after require=True get_record() calls
- Fix AttrDict class with __getattr__ for dynamic attribute access
- Add type annotations and casts for Kubernetes client objects
- Store compose config as DockerDeployer instance attributes
- Filter None values from dotenv and environment mappings
- Use hasattr/getattr patterns for optional container attributes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

stack_orchestrator/deploy/deployer.py

@@ -15,6 +15,7 @@
 
 from abc import ABC, abstractmethod
 from pathlib import Path
+from typing import Optional
 
 
 class Deployer(ABC):
@@ -65,7 +66,7 @@ class Deployer(ABC):
         pass
 
     @abstractmethod
-    def run_job(self, job_name: str, release_name: str = None):
+    def run_job(self, job_name: str, release_name: Optional[str] = None):
         pass