diff --git a/.agents/skills/polyxml-codegen-workflow/SKILL.md b/.agents/skills/polyxml-codegen-workflow/SKILL.md
index a14af8c..3c23050 100644
--- a/.agents/skills/polyxml-codegen-workflow/SKILL.md
+++ b/.agents/skills/polyxml-codegen-workflow/SKILL.md
@@ -8,6 +8,17 @@ description: >-
 
 # PolyXML Polyglot Codegen Development & Verification Playbook
 
+## CI generated-consumer prerequisites
+
+The Rust core tests execute Python dataclass/Pydantic models and call PolyXML XML
+codecs. In the Rust CI job, install the editable Python extension with `[dev]`
+extras into a dedicated Python 3.12+ venv **before** `cargo test`; prepend that
+venv to `GITHUB_PATH` so subprocess `python3` uses the same interpreter. A local
+gate's existing venv can hide this missing CI dependency. New all-seven consumer
+tests require actual Java, Go, C++20, .NET and TypeScript tools; provision Node,
+TypeScript, Java and Go explicitly rather than relying on the runner image.
+Do not skip consumers to work around missing prerequisites.
+
 ## Inherited simpleContent
 
 Normalize synthetic text fields only after root-level import/include merging and
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1461325..fec0d64 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,6 +34,34 @@ jobs:
         with:
           python-version: "3.12"
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+
+      - name: Prepare Python generated-consumer environment
+        run: |
+          uv venv --python python .venv
+          uv pip install --python .venv/bin/python -e "./crates/polyxml-python[dev]"
+          echo "$PWD/.venv/bin" >> "$GITHUB_PATH"
+
+      - name: Set up generated-consumer Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: "22"
+
+      - name: Install generated-consumer TypeScript compiler
+        run: npm install --global typescript@5.9.3
+
+      - name: Set up generated-consumer Java
+        uses: actions/setup-java@v6
+        with:
+          distribution: "temurin"
+          java-version: "25"
+
+      - name: Set up generated-consumer Go
+        uses: actions/setup-go@v7
+        with:
+          go-version: "1.26.x"
+
       - name: Verify Multi-Language Version Parity
         run: python scripts/sync_version.py --check