fix: ensure worker files are built before running tests

Previously, unit tests could fail if worker files hadn't been
built yet. This adds an explicit build-main step to both the CI
workflow and the test-unit Makefile target to ensure worker
files exist before tests execute.

Author: ThomasK33

.github/workflows/ci.yml

@@ -74,6 +74,9 @@ jobs:
 
       - uses: ./.github/actions/setup-cmux
 
+      - name: Build worker files
+        run: make build-main
+
       - name: Run tests with coverage
         run: bun test --coverage --coverage-reporter=lcov ${{ github.event.inputs.test_filter || 'src' }}
 

Makefile

@@ -207,7 +207,7 @@ test-integration: node_modules/.installed build-main ## Run all tests (unit + in
 	@bun test src
 	@TEST_INTEGRATION=1 bun x jest tests
 
-test-unit: node_modules/.installed ## Run unit tests
+test-unit: node_modules/.installed build-main ## Run unit tests
 	@bun test src
 
 test: test-unit ## Alias for test-unit