feat: add Stellar onboarding tour

[kaycke1337]

Summary

• add a first-run Stellar onboarding tour with five steps for the send flow
• persist dismissal in localStorage and add a footer restart entry point
• keep tour copy in src/i18n/en.json and anchor the tour to header, wallet, recipient, amount, and submit UI
• add Playwright e2e coverage for completion, restart, Escape dismissal, and refresh persistence

I used a small in-app tour controller instead of adding a tour dependency, keeping the shipped tour code minimal and avoiding another UI overlay package. The overlay does not trap clicks, supports Escape dismissal, restores focus after closing, and respects prefers-reduced-motion for scroll behavior.

Closes #17

Validation

• npx prettier --check .
• npx tsc --noEmit
• git diff --check
• npx vite build
• npx playwright test

Build/test completed successfully. Vite still reports existing dependency/chunk-size warnings from bundled wallet SDK dependencies.

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[truthixify]

The tour itself (OnboardingTour.tsx, 5 steps, dismiss + restart, en.json strings, Playwright e2e) matches #17 well. Same rebase blocker, branched from pre-develop. Rebase, drop reverts to StellarSend/Receive:

git fetch origin
git rebase origin/develop
git push --force-with-lease

Thanks @kaycke1337.

[truthixify]

The 5-step OnboardingTour, i18n strings, dismiss + restart flow, and Playwright spec all match issue #17.

Real conflicts now in:

• package.json
• pnpm-lock.yaml
• playwright.config.ts (already exists on develop from feat(stellar): add payment link generation and consumption #34, your e2e setup conflicts)
• src/App.tsx (develop now mounts HelpButton from feat: add in-app help/FAQ system #31, your OnboardingTour mount slot overlaps)
• src/components/StellarSend.tsx (lots of work landed there)

git fetch origin
git rebase origin/develop
git push --force-with-lease

For App.tsx keep both mounts (HelpButton AND OnboardingTour). For playwright.config.ts keep develop's existing config and add your onboarding spec alongside others. For StellarSend.tsx keep develop's content and add any tour-target data attributes you need.

Thanks @kaycke1337.

[truthixify]

Closing as we wrap up this round of the Wraith × Drips × Stellar Wave program.

Thanks for the contribution. The work and review history stays on this PR for reference. A new set of issues will go up shortly under the same Stellar Wave label if you want to pick something fresh next round.

If you specifically want to land the work that's already in this PR (post-wave), feel free to reopen and rebase against develop. Otherwise, no action needed.