fix: unify agentType value domain to 'claude-code' | 'codex'

The streamed-output-evaluator used 'claude' while the rest of the
codebase used 'claude-code'. Align the evaluator type and all call
sites (message-agent-executor, task-scheduler) to use the canonical
'claude-code' | 'codex' domain consistently.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/message-agent-executor.ts

@@ -147,7 +147,7 @@ export async function runAgentForGroup(
             resetSessionRequested = true;
           }
           const evaluation = evaluateStreamedOutput(output, streamedState, {
-            agentType: isClaudeCodeAgent ? 'claude' : 'codex',
+            agentType: isClaudeCodeAgent ? 'claude-code' : 'codex',
             provider,
             suppressClaudeAuthErrorOutput: provider === 'claude',
             trackSuccessNullResult: true,