B2BEA.org Rebuild build-execution S-54

• Moved base layout Pro access gating from inline script into /assets/js/pro-access-runtime.js.
• Preserved existing authbridge.checkProAccess behavior and paywall/content toggle.
• Added focused Pro access runtime governance coverage.

• Red test first: node --test test/proAccessRuntime.test.js failed before /assets/js/pro-access-runtime.js was wired.
• node --check src/assets/js/pro-access-runtime.js: passed
• node --test test/proAccessRuntime.test.js: 1/1 passed
• node scripts/audit-css-governance.js: passed
• git diff --check: passed
• npm test: 118/118 passed
• npm run build: Eleventy copied 126 assets and wrote 126 files
• GitHub Actions build: passed in 19s
• Cloudflare Pages: passed

feature/b2bea-slice-54-pro-access-runtime

https://github.com/b2bea-org/b2bea-website/pull/89

Start Slice 55 from origin/main; rescan remaining inline scripts and target simple inline event handlers or decide which config/data snippets should remain inline.

• Moved base layout Pro access gating from inline script into /assets/js/pro-access-runtime.js.
• Preserved existing authbridge.checkProAccess behavior and paywall/content toggle.
• Added focused Pro access runtime governance coverage.

Start Slice 55 from origin/main; rescan remaining inline scripts and target simple inline event handlers or decide which config/data snippets should remain inline.

Machine-readable source fields