fix: increase claude-token-optimizer timeout from 10 to 15 minutes (#1937)

Run 24290714882 timed out at exactly 10 minutes while the agent was
still productively working — calculating token stats and preparing
the optimization issue. The agent never reached the safe-output step,
causing the run to be marked as failed.

Increase timeout to 15 minutes to give the agent enough time to
complete its analysis and post the issue.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: lpcox

.github/workflows/claude-token-optimizer.lock.yml

@@ -30,7 +30,7 @@ safe-outputs:
     title-prefix: "\u26a1 Claude Token Optimization"
     labels: [claude-token-optimization]
     close-older-issues: true
-timeout-minutes: 10
+timeout-minutes: 15
 strict: true
 steps:
   - name: Download recent Claude workflow logs