ci: stage PR126 hosted contract followup

Author: TheHiddenObserver

.github/workflows/pr126-hosted-contract-followup.yml

@@ -0,0 +1,51 @@
+name: PR126 Hosted Contract Followup
+
+on:
+  push:
+    branches:
+      - agent/panel-p1-stage-c-covariance
+    paths:
+      - '.github/workflows/pr126-hosted-contract-followup.yml'
+
+permissions:
+  contents: write
+
+jobs:
+  followup:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: agent/panel-p1-stage-c-covariance
+          fetch-depth: 0
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      - name: Apply maintained contract followup
+        run: python dev/pr126_hosted_contract_followup.py
+      - name: Install focused validation environment
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install "numpy<2" pytest pandas patsy
+          python -m pip install -e .
+      - name: Run hosted-failure regressions
+        run: |
+          python -m pytest \
+            dev/tests/test_module_review_covariance_panel.py \
+            dev/tests/test_panel_stage_c_rank_deficient_matrix.py \
+            dev/tests/test_panel_stage_c_inference_guard.py \
+            -q --tb=short
+          python dev/validation/check_docs_contracts.py
+          python dev/validation/fix_docs_links.py --check
+          git diff --check
+      - name: Commit validated followup
+        run: |
+          rm dev/pr126_hosted_contract_followup.py
+          rm .github/workflows/pr126-hosted-contract-followup.yml
+          git config user.name "chatgpt-codex-connector"
+          git config user.email "1144995+chatgpt-codex-connector[bot]@users.noreply.github.com"
+          git add dev/tests/test_module_review_covariance_panel.py docs/en/models/panel.md docs/cn/models/panel.md
+          git add -u dev/pr126_hosted_contract_followup.py .github/workflows/pr126-hosted-contract-followup.yml
+          git commit -m "test: align panel rank-deficient hosted contracts"
+          git push origin HEAD:agent/panel-p1-stage-c-covariance