feat: sync new SDK APIs from openapi commit 523035611 to docs site

[endless-bot]

Summary

Syncs new SDK interfaces introduced in openapi commit 523035611 to the developers documentation site, along with a range of docs, UI, and infrastructure improvements.

New API Documentation (EN / zh-CN / zh-HK)

Quote APIs

• option_volume — option volume query
• option_volume_daily — daily option volume query
• short_positions — short position data
• update_pinned — update pinned securities

Fundamental APIs

• Calendar: dividend, earnings, IPO, macro, split calendars
• Fundamental: company profile, corporate actions, dividends, executives, financial reports, fund holdings, ratings, shareholders, valuations
• Market: AH premium, broker positions, index components, market status, trading stats, unusual items

Account APIs

• Alert: create, delete, list, update alerts
• DCA (dollar-cost averaging): create, delete, list, update, history
• Portfolio: capital flow, exchange rates, profit analysis (by market, detail, summary)
• Sharelist: create, delete, list, update share lists

UI / Site Improvements

• Pricing page: new tri-locale pricing comparison page for market data subscription tiers; fixes for responsive layout and static QR code on mobile
• FeaturesMenu: mega-menu dropdown in main nav with 9 financial data product categories; full i18n support
• Nav: moved API Reference from top nav to Docs sidebar (opens in new tab)
• Homepage visual polish: neutral color vars on ArchCanvas, distinct card accent hues, section border delineation, ProductSkill gradient, flat GetStarted background
• Quote permission: added permission notices across CLI docs, API docs, and API Reference; removed unreliable client-side permission status detection
• Mock login toggle: dev-only panel to simulate login/logout state; shared reactive useLoginState composable

Docs Updates

• CLI v0.19.2 release notes + updated finance-calendar subcommand examples
• Corrected quote permission names to match Quote Store (pluralization, Nasdaq Basic rename)
• Updated skill guide to use CLI-first flow
• Fixed missing zh-HK translations

Bug Fixes

• Fixed UnoCSS build error from arbitrary font-feature-settings class
• Added result.root null guard in postcss.config.mjs to prevent PostCSS crash
• Fixed home page footer rendering
• Fixed pricing page build dist

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