fix: align TraceOutcome enum with TypeScript API — change in_progress to pending

The Python SDK used "in_progress" while the TypeScript shared types and API
use "pending" for the initial trace state. This mismatch caused
deserialization issues for cross-SDK users.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: VladUZH

src/sidclaw/_types.py

@@ -10,7 +10,7 @@
 PolicyEffect = Literal["allow", "approval_required", "deny"]
 ApprovalStatus = Literal["pending", "approved", "denied", "expired"]
 RiskClassification = Literal["low", "medium", "high", "critical"]
-TraceOutcome = Literal["in_progress", "executed", "blocked", "denied", "completed_with_approval", "expired"]
+TraceOutcome = Literal["pending", "executed", "blocked", "denied", "completed_with_approval", "expired"]
 
 
 # === Request types (TypedDict — lightweight, no runtime overhead) ===