Add workflow to provision GitHub Project board columns

.github/workflows/setup-project-board.yml

@@ -0,0 +1,67 @@
+name: Setup Project Board
+on:
+  workflow_dispatch:
+
+permissions:
+  repository-projects: write
+
+jobs:
+  setup-board:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create project board with columns
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const columns = [
+              'Backlog',
+              'Ready for Agent',
+              'In Progress',
+              'Review',
+              'Done'
+            ];
+
+            // Check for an existing board named 'Board'
+            const { data: existingProjects } = await github.rest.projects.listForRepo({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: 'open',
+            });
+
+            let project;
+            const existing = existingProjects.find(p => p.name === 'Board');
+            if (existing) {
+              console.log(`Using existing project: ${existing.name} (id: ${existing.id})`);
+              project = existing;
+            } else {
+              const created = await github.rest.projects.createForRepo({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                name: 'Board',
+              });
+              console.log(`Created project: ${created.data.name} (id: ${created.data.id})`);
+              project = created.data;
+            }
+
+            // Add columns in order, skipping any that already exist
+            const { data: existingColumns } = await github.rest.projects.listColumns({
+              project_id: project.id,
+            });
+            const existingNames = new Set(existingColumns.map(c => c.name));
+
+            for (const name of columns) {
+              if (existingNames.has(name)) {
+                console.log(`Column already exists, skipping: ${name}`);
+                continue;
+              }
+              try {
+                await github.rest.projects.createColumn({
+                  project_id: project.id,
+                  name,
+                });
+                console.log(`Created column: ${name}`);
+              } catch (err) {
+                core.setFailed(`Failed to create column "${name}": ${err.message}`);
+                return;
+              }
+            }