Every page previously titled 'Corrosion Management' with zero meta -
marketing invisible to search and link previews. Router afterEach now
sets title/description/og per route (no new deps); marketing pages get
real content-backed descriptions, panel views mechanical titles.
index.html carries defaults for pre-JS crawlers. Verified in-browser
per page via Playwright.
test-runner.yml: per-tool presence checks instead of green-lighting
missing toolchains; workflow_dispatch instead of every push.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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