build: putting workflows into a good state for pre-alpha

- correct branch (main) in ci.yml, and no codecov.
- correct branch (main) in lockfileversion-check.yml
- deleting release.yml - we don’t want to accidentally release to frontend-build’s package. Yikes.
- Deleting sync-master-alpha.yml - not something we need.

.github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: Default CI
 on:
   push:
     branches:
-    - master
+    - main
   pull_request:
     branches:
     - '**'
@@ -26,8 +26,3 @@ jobs:
       run: npm run lint
     - name: Test
       run: npm run test
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4
-      with:
-        token: ${{ secrets.CODECOV_TOKEN }}
-        fail_ci_if_error: true

.github/workflows/lockfileversion-check.yml

@@ -1,11 +1,11 @@
-#check package-lock file version
+# check package-lock file version
 
 name: Lockfile Version check
 
 on:
   push:
     branches:
-    - master
+    - main
   pull_request:
 
 jobs: