Onboarding: make the Helius key step visually optional

[zo-sol]

Problem

Step 03 of the unlock tutorial (Market_RPC) asks for a Helius API key. The copy already says the step is optional, but the visual hierarchy says the opposite, so first-time users read it as a required signup before they can use the app.

Current state in surfaces/webview/src/settings/HeliusKeyForm.tsx, rendered as step 03 by surfaces/webview/src/unlock/UnlockProvider.tsx:170-172:

Element	Current styling	Reads as
Save Key button	an-btn an-btn-green, full width, primary green	the action to take
Get_your_key · helius.dev link	green accent, uppercase	go sign up for a third party service
Skip for now	11px uppercase, var(--an-fg-dim) gray text	an afterthought

The step copy in surfaces/webview/src/i18n/messages.ts:106-110 is already honest:

Completely optional. The public RPC works by default. Paste a Helius key for faster market indexing.

The styling contradicts that sentence. The key was added for speed and stability on market indexing and comment flows, but the public RPC path works fine and most users will never have a paid Helius plan.

Change

Invert the emphasis for the onboarding usage only:

1. Make skip the visually primary action. Color and size comparable to what Save Key has today.
2. Demote the key entry path to secondary gray: the input, the Save Key button, and the helius.dev link.
3. Add one line of reassurance that skipping changes nothing about whether the app works, so the user does not have to infer it from the step copy alone.

Scope

HeliusKeyForm is shared with two other surfaces where a prominent Save Key is correct:

• Settings > Helius (surfaces/webview/src/chat/Sessions.tsx:705)
• Market tab retry prompt (surfaces/webview/src/market/MarketScreen.tsx:186)

So this should be a variant on the shared component rather than a global restyle. The component already takes a skipLabel prop, so an emphasis prop follows the existing pattern.

Notes

• Any new copy needs all three locales (en / ko / ru) in surfaces/webview/src/i18n/messages.ts.
• The skip control keeps calling useDefaultRpc, so there is no behavior change, only presentation.
• Same reasoning applies to the market-side prompt text Add Helius key for faster results (MarketScreen.tsx:286) if it starts reading as a requirement, but that one is triggered by an actual failure so it is lower priority.

[RemilioNubilio]

Plan of record before I start, so we do not touch the same files.

Taking it as a variant on the shared component, per your scope note. HeliusKeyForm gets an emphasis prop next to the existing skipLabel: "key" is the default and keeps today's rendering for Settings > Helius and the market retry prompt; only the unlock step passes "skip".

Under emphasis="skip":

1. Skip is the primary action: the same full-width an-btn an-btn-green treatment Save Key has today, and it moves above the key path so the green button cannot read as "submit the key".
2. One reassurance line directly under it, in en, ko and ru in messages.ts: skipping changes nothing about whether the app works, and a key can be added later in Settings.
3. The key path is demoted together: the input, Save Key as an-btn-outline, and the helius.dev link in the dim gray the skip text uses today.

Behavior is untouched: skip still calls useDefaultRpc and onDone, save still submits the key. Files: surfaces/webview/src/settings/HeliusKeyForm.tsx, surfaces/webview/src/unlock/UnlockProvider.tsx (one prop), surfaces/webview/src/i18n/messages.ts. The market-side prompt text stays as is, as you noted. PR today with before and after at phone width.