fix(publish): build SDK before CLI in publish-cli job, skip version bump in CI

The publish-cli job was building the CLI in isolation without the SDK dist
available. Since tsc -p doesn't auto-build project references, the CLI build
failed when it couldn't resolve @bradygaster/squad-sdk exports.

Also adds SKIP_BUILD_BUMP to smoke-test to prevent prebuild version mutation.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Copilot

.github/workflows/publish.yml

@@ -32,6 +32,8 @@ jobs:
 
       - name: Build
         run: npm run build
+        env:
+          SKIP_BUILD_BUMP: '1'
 
       - name: Run CLI smoke tests
         run: npx vitest run test/cli-packaging-smoke.test.ts
@@ -124,6 +126,9 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Build squad-sdk (required for CLI project references)
+        run: npm -w packages/squad-sdk run build
+
       - name: Build squad-cli
         run: npm -w packages/squad-cli run build