Tautest v1.4.0

Highlights

• Added tautest demo --run to execute the local Vitest demo flow end to end and restore fixture files afterward.
• Added richer no-op guidance for runs with no changed production source files, including excluded file reasons and machine-readable guidance.
• Updated demo docs and CLI reference for the runnable demo path.

Verification

• pnpm install --frozen-lockfile
• pnpm audit --prod
• pnpm lint
• pnpm test
• pnpm build
• node packages/cli/dist/index.js demo --run
• npm publish workflow succeeded for tautest@1.4.0 and @tautest/core@1.4.0.