Close local release-quality gaps and reconcile workplan status

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a0e332-3365-77c0-8491-084e9ea33ac1

llm_connect/config.py

@@ -2,10 +2,10 @@
 LLM configuration and API key resolution.
 """
 
+import os
 from dataclasses import dataclass, field
 from pathlib import Path
-from typing import Optional, Dict, Any
-import os
+from typing import Any
 
 
 @dataclass
@@ -25,19 +25,19 @@ class LLMConfig:
 
     provider: str = "openrouter"
     model: str = "moonshotai/kimi-k3"
-    api_key: Optional[str] = None
+    api_key: str | None = None
     api_base: str = "https://openrouter.ai/api/v1"
     claude_cli_path: str = "claude"
     timeout_seconds: int = 300
     max_retries: int = 3
-    extra: Dict[str, Any] = field(default_factory=dict)
+    extra: dict[str, Any] = field(default_factory=dict)
 
 
 def resolve_api_key(
-    explicit: Optional[str] = None,
+    explicit: str | None = None,
     env_var: str = "OPENROUTER_API_KEY",
-    key_file_paths: Optional[list[Path]] = None,
-) -> Optional[str]:
+    key_file_paths: list[Path] | None = None,
+) -> str | None:
     """Return an API key from the first available source.
 
     Resolution order:
@@ -65,7 +65,7 @@ def resolve_api_key(
     return None
 
 
-def find_project_root(start: Optional[Path] = None) -> Optional[Path]:
+def find_project_root(start: Path | None = None) -> Path | None:
     """Walk up from *start* (default CWD) looking for ``pyproject.toml``.
 
     Returns the directory containing the marker file, or ``None``.
@@ -79,8 +79,8 @@ def find_project_root(start: Optional[Path] = None) -> Optional[Path]:
 
 def load_config(
     provider: str = "openrouter",
-    model: Optional[str] = None,
-    api_key: Optional[str] = None,
+    model: str | None = None,
+    api_key: str | None = None,
     **overrides: Any,
 ) -> LLMConfig:
     """Build an :class:`LLMConfig` with sensible defaults.
@@ -99,7 +99,7 @@ def load_config(
             key_file_paths=key_file_paths,
         )
 
-    defaults: Dict[str, Any] = {
+    defaults: dict[str, Any] = {
         "provider": provider,
         "model": model or "moonshotai/kimi-k3",
         "api_key": resolved_key,