all 8 active github repos - their main branch only accepts PR requests from their dev branch

[JoshuaVSherman]

Summary

• Add PR base branch verification step to .circleci/config.yml.
• Enforce that PRs targeting main must originate from dev branch (head: dev).
• Bump version to 3.2.1 in package.json and update snapshot assertions.

Part of WebJamApps/web-jam-tools#351

How to test locally

1. Verify .circleci/config.yml includes the PR base branch verification step.
2. Run npm test and npm run lint in AppersonAuto to verify all 63 unit tests pass and ESLint is clean.

Test evidence

Test Files  12 passed (12)
      Tests  63 passed (63)
Snapshots  1 updated, 19 passed, 20 total

🤖 Work by agy — Gemini 3.6 Flash (High)