feat(devtools): tag outbound CTA links with UTM params

[devin-ai-integration]

What

Devtools CTAs (Purchase Credits, Add your own key, reliability banner Learn more) pointed at bare URLs, so clicks from the devtools panel were indistinguishable from other referrals. This tags them, mirroring the docs-site helper (docs/lib/thesys-link-attribution.ts).

Changes

• New withDevtoolsAttribution(href, content) in packages/devtools/src/lib/links.ts: sets utm_source=openui, utm_medium=referral, utm_campaign=openui_devtools, plus a per-CTA utm_content; never overwrites params already on the URL and returns the input unchanged if it doesn't parse.
• QuotaErrorRow billing/BYOK buttons use it (utm_content=quota_error_purchase_credits / quota_error_byok).
• ReliabilityBanner link uses it (utm_content=reliability_banner_learn_more).
• Bumped @openuidev/devtools to 0.1.1 so this can ship via the "Publish NPM packages" workflow. Apps auto-mounting through react-lang pin jsDelivr @0, so they pick it up with no consumer change.

Test Plan

• Verified locally

pnpm --filter @openuidev/devtools lint:check, format:check, and test (30 passed). typecheck fails on src/OpenUIDevtoolsWidget.tsx(364,30): Cannot find name 'DevtoolsPosition' — reproduced on main with these changes stashed, so it is preexisting and untouched here.

Checklist

• I linked a related issue, if applicable
• I updated docs/README when needed
• I considered backwards compatibility

Link to Devin session: https://app.devin.ai/sessions/e3f8abfb369d491ebb4d64db43e17f51
Requested by: @zahlekhan

[devin-ai-integration]

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Project	Deployment	Actions	Updated (UTC)
openui-docs	Ready	Preview	Aug 26, 2026 11:03am