ci: validate pinned Wellman source [ticket-018]

.github/workflows/wellman.yml

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+name: wellman
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  metadata:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97
+        with:
+          python-version: "3.12"
+      - name: Check out dependency-free Wellman source
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1
+        with:
+          repository: wellmanifest/wellman
+          ref: 58d7ae1ba768ead256e0e9a05fd641a0d8faec28
+          path: .wellman-runtime
+          persist-credentials: false
+      - name: Verify the Wellman source revision
+        run: test "$(git -C .wellman-runtime rev-parse HEAD)" = '58d7ae1ba768ead256e0e9a05fd641a0d8faec28'
+      - name: Validate adopted requirements and Docs metadata
+        env:
+          PYTHONPATH: ${{ github.workspace }}/.wellman-runtime/src
+        run: python scripts/check-wellman.py

project/ticket-018/README.md

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+# Ticket 018: Validate adopted Wellman source in CI
+
+- **ID**: ticket-018
+- **Owner**: agent:codex
+- **Status**: IN_PROGRESS
+- **Workflow state**: PUBLICATION
+- **Created**: 2026-10-01
+
+## Goal and scope
+
+Complete infrastructure dependency AC-05 of merged ticket-016. Run the existing
+metadata checker on pull requests and pushes to main using verified Wellman
+source at 58d7ae1ba768ead256e0e9a05fd641a0d8faec28. The read-only job uses
+immutable action revisions and does not invoke pip or a build backend.
+
+## Acceptance criteria
+
+- [ ] AC-01: Exact Wellman source validates the adopted repository locally and in CI.
+- [ ] AC-02: Managed governance accepts the infrastructure scope.
+- [ ] AC-03: Independent protected delivery accepts and merges the tested head.
+
+## Authorization
+
+SESSION_EXECUTION_AUTHORIZATION: the owner requested installation, completion,
+testing, push and protected merge of Wellmanifest adoption across Autogrammar.
+This authorizes process invocation, not trusted merge approval.
+
+## Tracking boundary
+
+Raw output and receipts stay in private external state. This job preserves
+existing product and governance gates and does not claim S3-S5 certification.

project/ticket-018/intent.json

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+{
+  "schema": "new-project.intent/v3",
+  "ticket": "ticket-018",
+  "summary": "Validate adopted Wellman source in CI without build resolution",
+  "workstream": "infrastructure",
+  "classification": {
+    "kind": "SERVICE",
+    "priority": "P1",
+    "origin": "requested"
+  },
+  "allowedPaths": [
+    "project/ticket-018/**",
+    "TODO.md",
+    "project/TICKETS.md",
+    ".github/workflows/wellman.yml"
+  ],
+  "forbiddenPaths": [
+    "project/ticket-*/user-*.md"
+  ],
+  "stacks": [],
+  "dependsOn": [
+    "ticket-016"
+  ],
+  "conflictsWith": [],
+  "integrationTicket": null,
+  "delivery": {
+    "acceptedBaseSha": "b22c09ced0694902c79ca8e4e53d2fe591cad505",
+    "targetBranch": "main",
+    "outcome": "Run the adopted metadata checker in CI using exact dependency-free Wellman source, without pip dependency or build-backend resolution.",
+    "nonGoals": [
+      "No changes to application code or adopted metadata",
+      "No new required-check policy or bypass of independent publication",
+      "No S3-S5 certification claim"
+    ],
+    "complexity": "S",
+    "estimatedMinutes": 20,
+    "budgets": {
+      "maxImplementationFiles": 1,
+      "maxAffectedComponents": 1,
+      "maxPublicInterfaceChanges": 0,
+      "maxRuntimeDependencies": 1
+    },
+    "architecture": {
+      "status": "accepted",
+      "decision": "Use a pinned checkout action for Wellman revision 58d7ae1ba768ead256e0e9a05fd641a0d8faec28, verify its Git SHA, and import its dependency-free source only in the metadata validation step.",
+      "components": [
+        {
+          "name": "ci",
+          "paths": [
+            ".github/workflows/wellman.yml"
+          ]
+        }
+      ],
+      "responsibilityChanges": false,
+      "interfaceChanges": [],
+      "dataChanges": [],
+      "ui": {
+        "impact": "none",
+        "states": [],
+        "evidence": []
+      },
+      "rollback": "Revert this workflow; keep existing governance and product checks."
+    },
+    "runtimeDependencies": [
+      "wellman@58d7ae1ba768ead256e0e9a05fd641a0d8faec28"
+    ],
+    "validation": [
+      {
+        "criterion": "AC-01",
+        "commands": [
+          "python scripts/check-wellman.py"
+        ],
+        "evidence": "The same pinned runtime and checker succeed locally and in the hosted metadata job."
+      },
+      {
+        "criterion": "AC-02",
+        "commands": [
+          "bash project/governance-check.sh --actor agent"
+        ],
+        "evidence": "Managed gate validates the infrastructure scope."
+      }
+    ]
+  }
+}