Add circular cursor gesture collection and redraw mode

[spencerc99]

Summary

• Add /circle-draw/, a guided page where extension users can trace large circles slowly enough for archival cursor sampling.
• Add a Circles mode to /redraw/ that reads cursor events from wewere.online/circle-draw, detects rough circular gestures inside longer trails, and arranges them into an overlapping composition.
• Add controls for gesture confidence, circle count, spatial overlap, timing overlap, pace, and stroke width.
• Link both surfaces directly to each other.

Detection

The detector scores closed trail windows using radial consistency, angular coverage, turn direction, aspect ratio, and distributed curvature. It rejects open arcs, back-and-forth movement, and corner-dominated rectangles. Detected paths retain their original gesture shape when they are translated and uniformly scaled into the composition.

Validation

• bunx vitest run redraw/__tests__/circles.test.ts (5 tests)
• bunx tsc --noEmit --pretty false
• Targeted ESLint on the changed TypeScript files
• bun run build
• Browser verification of /circle-draw/ and /redraw/?mode=circles with clean console logs
• Synthetic browser fixture: 24 of 24 circular gestures detected from 648 cursor events

The screenshot fixture uses generated cursor paths to exercise the production detector and renderer. It is not archived user data.

No changeset, starter-template update, or developer-doc update is needed because this change is confined to the extension website and does not change a package API.

[cloudflare-workers-and-pages]

Deploying we-were-online-website with    Cloudflare Pages

Latest commit:	ad3a7a8
Status:	✅  Deploy successful!
Preview URL:	https://6b3f7cba.we-were-online-website.pages.dev
Branch Preview URL:	https://cx-redraw-circles.we-were-online-website.pages.dev

View logs

[pkg-pr-new]

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bun add https://pkg.pr.new/@playhtml/common@340

bun add https://pkg.pr.new/playhtml@340

bun add https://pkg.pr.new/@playhtml/react@340

commit: ad3a7a8

[spencerc99]

Preview evidence

Circles scans 100,000 archived events by default and offers guided-page filtering.

Open preview · Review all evidence · Commit ad3a7a8

Archive-wide scan is the default

The deployed mode scanned 100,000 real archived events and correctly rejected ordinary browsing loops.

Open captured page · 1280×720

Guided circle collection page

Participants can intentionally contribute circle trails on the deployed collection route.

Open captured page · 1440×900

Synthetic composition fixture

This development fixture uses 24 generated cursor paths, not archived user gestures, to demonstrate the intended overlapping composition.

Open captured page · 1440×900

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