fix: 优化模型价格文件更新策略

.github/workflows/sync-model-pricing.yml

@@ -0,0 +1,62 @@
+name: 同步模型价格数据
+
+on:
+  schedule:
+    - cron: '*/10 * * * *'
+  workflow_dispatch: {}
+
+jobs:
+  sync-pricing:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: 检出 price-mirror 分支
+        uses: actions/checkout@v4
+        with:
+          ref: price-mirror
+          fetch-depth: 0
+
+      - name: 下载上游价格文件
+        id: fetch
+        run: |
+          set -euo pipefail
+          curl -fsSL https://raw.githubusercontent.com/BerriAI/litellm/main/model_prices_and_context_window.json \
+            -o model_prices_and_context_window.json.new
+
+          NEW_HASH=$(sha256sum model_prices_and_context_window.json.new | awk '{print $1}')
+
+          if [ -f model_prices_and_context_window.sha256 ]; then
+            OLD_HASH=$(cat model_prices_and_context_window.sha256 | tr -d ' \n\r')
+          else
+            OLD_HASH=""
+          fi
+
+          if [ "$NEW_HASH" = "$OLD_HASH" ]; then
+            echo "价格文件无变化，跳过提交"
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+            rm -f model_prices_and_context_window.json.new
+            exit 0
+          fi
+
+          mv model_prices_and_context_window.json.new model_prices_and_context_window.json
+          echo "$NEW_HASH" > model_prices_and_context_window.sha256
+
+          echo "changed=true" >> "$GITHUB_OUTPUT"
+          echo "hash=$NEW_HASH" >> "$GITHUB_OUTPUT"
+
+      - name: 提交并推送变更
+        if: steps.fetch.outputs.changed == 'true'
+        env:
+          NEW_HASH: ${{ steps.fetch.outputs.hash }}
+        run: |
+          set -euo pipefail
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add model_prices_and_context_window.json model_prices_and_context_window.sha256
+          COMMIT_MSG="chore: 同步模型价格数据"
+          if [ -n "${NEW_HASH}" ]; then
+            COMMIT_MSG="$COMMIT_MSG (${NEW_HASH})"
+          fi
+          git commit -m "$COMMIT_MSG"
+          git push origin price-mirror