fix(coding-agent): use high reasoning for issue analysis

.github/workflows/issue-analysis.yml

@@ -174,6 +174,7 @@ jobs:
     timeout-minutes: 45
     env:
       ISSUE_ANALYSIS_MODEL: openai-codex/gpt-5.5
+      ISSUE_ANALYSIS_THINKING: high
     steps:
       - name: Create high-entropy working directory name
         id: workdir
@@ -233,6 +234,7 @@ jobs:
             --approve \
             --session-dir "$RUNNER_TEMP/pi-out/session" \
             --model "$ISSUE_ANALYSIS_MODEL" \
+            --thinking "$ISSUE_ANALYSIS_THINKING" \
             "$prompt" | tee "$RUNNER_TEMP/pi-out/output.md"
 
       - name: Export session files