Load questions automatically and restore loading text contrast

[KillariDev]

Browse questions required a manual discovery click before its first registry read, and shared loading text lost contrast because of reduced opacity. The first page now loads automatically on entry and context changes, cached results remain visible during refresh, and later pages use Show more. New browsers start on Downloaded; existing favorites remain selected. Loading text retains its inherited semantic color at full opacity.

Updates the first-question tutorial, screenshot workflow, generated search index, and canonical documentation screenshots to match. Regression coverage includes automatic loading, cached content, retry, pagination, and stale failures after context changes.

Validation:

• bun run ui:build, bun run tsc, 86 focused owning/consumer tests, bun run format:check, bun run check, both Knip passes, and git diff --check passed.
• All 22 canonical documentation screenshot captures and strict freshness checks passed.
• Playwright Chromium: 1440×900 desktop and 390×844 mobile; 13 main routes, four ancillary dashboards, populated questions, light/dark loading, and loading/error/retry/pagination fixtures. All 48 recorded viewport/state checks had zero WCAG A/AA axe findings, runtime errors, or horizontal overflow. The tutorial was also checked at both widths.
• Final code review: 95/100; visual review: 96/100; documentation review: 97/100. No outstanding findings.
• Current with remote main. Full contract, mainnet, and fork/auction workflow suites were excluded because no contract, ABI, transaction, or production build logic changed. This remains a scoped UI audit, not an exhaustive real-wallet audit.

Automatic question loading:

Readable loading feedback on mobile: