ci: add auto-project workflow for issue tracking

Automatically adds issues to org projects based on labels:
- agentic → Workstation
- lang:go → Core.GO & Core.CLI
- scope:arch → Core.Framework

Requires PROJECT_TOKEN org secret.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/auto-project.yml

@@ -0,0 +1,33 @@
+name: Auto-add to Project
+
+on:
+  issues:
+    types: [opened, labeled]
+
+permissions:
+  issues: read
+
+jobs:
+  add-to-project:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Add to Workstation (agentic label)
+        if: contains(github.event.issue.labels.*.name, 'agentic')
+        uses: actions/add-to-project@v1.0.2
+        with:
+          project-url: https://github.com/orgs/host-uk/projects/2
+          github-token: ${{ secrets.PROJECT_TOKEN }}
+
+      - name: Add to Core.GO (lang:go label)
+        if: contains(github.event.issue.labels.*.name, 'lang:go')
+        uses: actions/add-to-project@v1.0.2
+        with:
+          project-url: https://github.com/orgs/host-uk/projects/4
+          github-token: ${{ secrets.PROJECT_TOKEN }}
+
+      - name: Add to Core.Framework (scope:arch label)
+        if: contains(github.event.issue.labels.*.name, 'scope:arch')
+        uses: actions/add-to-project@v1.0.2
+        with:
+          project-url: https://github.com/orgs/host-uk/projects/1
+          github-token: ${{ secrets.PROJECT_TOKEN }}