Add the third anniversary party

[spencerc99]

Summary

• Add a versioned /party/3/ anniversary page with shared cake, balloons, wishes, pennants, candles, cursors, presence, and a two-person party popper.
• Add an intentionally unlinked /party/3/balloons/ workshop for building shared balloon creations.
• Keep persistent artifacts in shared state, active popper holds in awareness, and transient effects in PlayHTML events.
• Add the party artwork, responsive layout, sound effects, card and seal palettes, and customizable name tags.

Verification

• bunx vitest run party/3/partyState.test.ts
• bunx tsc -p extension/website
• focused ESLint with ESLINT_USE_FLAT_CONFIG=false
• bun run build in extension/website
• bun run check:extension-website
• Two Chrome participants verified remote cursors, 2 here, synchronized party and workshop state, persistent reloads, and the paired popper event and confetti in both tabs.

PR evidence will be added after the preview deployment is available.

[cloudflare-workers-and-pages]

Deploying we-were-online-website with    Cloudflare Pages

Latest commit:	fbd5c5d
Status:	✅  Deploy successful!
Preview URL:	https://d2220f39.we-were-online-website.pages.dev
Branch Preview URL:	https://wip-party-3.we-were-online-website.pages.dev

View logs

[pkg-pr-new]

Open in StackBlitz

bun add https://pkg.pr.new/@playhtml/common@412

bun add https://pkg.pr.new/playhtml@412

bun add https://pkg.pr.new/@playhtml/react@412

commit: fbd5c5d

[spencerc99]

Preview evidence

Recomposes the party journey and improves its popper, card maker, typography, input, and keyboard experience.

Open preview · Review all evidence · Commit fbd5c5d

Entrance, cake, and balloon stand

The opening view keeps the copy on the wall and leads from cake to balloons and the two-person popper without a persistent hint.

Open captured page · 1280×720

Message pile and exit

The empty pile invites the first card; all design and signing controls fit above the footer beside a clear visual endpoint.

Open captured page · 1280×720

_{Published by PR Evidence. Media is temporary and is removed after retention expires.}

[spencerc99]

Code review

• P1 — Dragging a balloon or workshop segment also runs its click action. PartyPage.tsx:700 clears drag during pointerup, so the subsequent click reaches the action at lines 779–808 after the drag guard has disappeared. The workshop repeats the same sequence at BalloonWorkshop.tsx:160 and lines 377–388. A drag therefore also inflates, deflates, or can pop the item. Preserve a completed-gesture flag through the click and suppress that click, or resolve click versus drag entirely in pointerup.
• P1 — Workshop events never update the other participant's event line. BalloonWorkshop.tsx:88 dispatches eventPayload: { message } but its listener expects to receive another outer eventPayload object. The runtime extracts eventPayload and passes it directly to listeners at packages/playhtml/src/index.ts:607, so remote listeners receive { message } and the current check always sees undefined. Type the listener payload as { message?: string } and read payload.message.
• P1 — The new party route is outside strict TypeScript verification and already contains definite type errors. extension/website/tsconfig.json:29 includes only src, while this PR adds its sources under party/3. Including that route surfaces errors such as reading the missing PopperAwareness.holdId at PartyPage.tsx:1223, passing an arbitrary string to the readonly color tuple at line 196, and using ES2021 replaceAll under the ES2020 lib at partyState.ts:212. Expand the website TypeScript project to cover the route and fix the surfaced errors.

[spencerc99]

Code review

No issues found. Verified that the prior findings are resolved and checked the fix delta for regressions and project-instruction compliance.