fix: adjust suggestions dropdown z-index to resolve stacking context click block

fix: trigger suggestion selection onMouseDown to bypass input blur unmounting

fix: update watchlist suggestions to fill input box on click instead of adding immediately

feat: add subtle Logo watermark to Watchlist background

feat: add Yahoo Finance-style sparkline charts to Trending Hub and Watchlist

feat: replace native confirm with modern glassmorphic watchlist confirmation modal

feat: add confirmation popup when deleting a stock from the watchlist

feat: add global indices ticker tape, key metrics grid, and live watchlist quotes

fix: add type-safe Array checks to autocomplete suggestions to prevent TypeError rendering crashes

feat: add backend dynamic stock search endpoint and debounced frontend autocomplete

feat: add Adani stock mappings and refined empty chart error helper

feat: add real-time stock autocomplete and company name auto-correction

feat: refactor App.tsx into modular components and design cyberpunk landing page