feat(marketing): add GitHub Pages project site and brand visual refresh

[TechAaroorian]

📌 Overview

This PR introduces the static marketing and project showcase site for SlotSyncro under apps/marketing, configures automated GitHub Pages deployment via GitHub Actions, and aligns the main web application's styling and brand identity.

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🚀 Key Changes

🌐 Marketing Site & GitHub Pages

• Automated Pages Deployment (.github/workflows/pages.yml): Configured a dedicated GitHub Actions workflow to build and deploy apps/marketing/out to GitHub Pages upon pushes to main with path filters.
• Static Export Configuration (apps/marketing/next.config.ts): Configured Next.js for static export (output: 'export') with trailingSlash and configurable PAGES_BASE_PATH.
• Landing Page & Product Story (apps/marketing/app/):
  • Implemented responsive landing page highlighting availability sharing, group polling, design principles, and the M2 milestone roadmap.
  • Added an interactive ScreenshotGallery dialog component with full-resolution previews.
  • Added high-resolution product preview screenshots for the dashboard, create poll, and public voting view.

🎨 Brand Identity & Main App Alignment (apps/app)

• Theme Tokens & Design Refresh (globals.css): Aligned color tokens, dark mode palette, and subtle page glow effects to match the brand identity (forest green and warm terracotta accents).
• Branded Logo & Icon: Added standardized SVG vector logo in apps/app/components/logo.tsx and modern SVG favicons (apps/app/app/icon.svg, apps/marketing/app/icon.svg).
• Auth Component Polish: Improved button layout responsiveness and height alignment in apps/app/components/auth-components.tsx.

📖 Documentation (README.md)

• Updated repository architecture diagram to include apps/marketing.
• Added clickable product preview screenshots.
• Clarified local port mapping (http://localhost:3000 for marketing, http://localhost:3001 for the core app) and updated prerequisites to pnpm v11.24.0.

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📸 Visual Preview

• Connected Scheduling Dashboard: Overview of host bookings, polls, and setup readiness.
• Create & Share Poll: Fast time selection combined with custom slot picker.
• Group Consensus Poll: Public slot voting for both authenticated users and accountless participants.

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✅ Verification & Testing

• Verified static build succeeds locally via pnpm --filter marketing build.
• Checked responsive layouts across mobile, tablet, and desktop viewports.
• Verified screenshot lightbox dialog opens and closes via overlay click, escape, and close button.
• Existing tests passing in CI pipeline.

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	99.18%	121 / 122
🔵	Statements	98.38%	122 / 124
🔵	Functions	100%	18 / 18
🔵	Branches	84.28%	59 / 70

File Coverage

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