Implement Netlify deployment integration and payment templates

[Jackson57279]

• Added support for deploying projects to Netlify, including authentication and deployment status tracking.
• Introduced new API routes for managing Netlify domains, environment variables, and deployment logs.
• Created payment integration templates for various frameworks (Angular, React, Next.js, Svelte, Vue) using Autumn and Stripe.
• Updated environment example and README to include new Netlify and payment integration configurations.
• Enhanced project UI with deployment dashboard and export options to GitHub.

This commit significantly expands the deployment capabilities and payment processing features of the application.

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Summary by cubic

Implements Netlify deployments, GitHub export, a skills.sh‑compatible skill system with WebContainer previews, and Inngest‑powered agent streaming. Adds Anthropic OAuth with AES‑GCM token encryption, database/payment templates, color themes, and new SEO content; makes skill queries public for server‑side use.

• New Features

  • Netlify: OAuth with signed state; deploy (preview/prod), status/logs, domains, env vars, rollback, CLI ZIPs; Convex deployment records.
  • GitHub export: Convex module + API; create or reuse repos, branches/commits; tracked status.
  • Skills: Convex CRUD + installations; core skills baked in; PrebuiltUI scraped/seeded; token‑budgeted prompt injection; public queries for server‑side access.
  • Preview/Sandbox: feature‑flagged WebContainers with build/lint and dev server; sandbox adapter to switch between E2B and WebContainer; scoped COOP/COEP for /preview; sandbox bridge route.
  • Orchestration: Inngest function + realtime channel; /api/agent/run streams via SSE.
  • Auth/Security: Anthropic OAuth; AES‑256‑GCM encrypted tokens; internal token queries/actions.
  • Data/Templates: persist project database provider; templates for Drizzle+Neon and Convex; payment templates (Autumn + Stripe); env examples.
  • UI/SEO: color theme provider/picker; compare and blog pages; updated sitemap, robots (AI crawler rules), RSS, and llms.txt.

• Migration

  • Set NETLIFY_CLIENT_ID, NETLIFY_CLIENT_SECRET, NETLIFY_OAUTH_STATE_SECRET; ensure NEXT_PUBLIC_APP_URL.
  • Set OAUTH_ENCRYPTION_KEY (32‑byte hex).
  • Configure Anthropic: ANTHROPIC_CLIENT_ID, ANTHROPIC_CLIENT_SECRET, ANTHROPIC_OAUTH_STATE_SECRET; optional CLAUDE_CODE_ENABLED.
  • Optional: NEXT_PUBLIC_USE_WEBCONTAINERS=true to enable browser sandboxes.
  • Apply Convex schema changes; connect Netlify/GitHub in‑app; run scripts/seed-skills.ts; add env vars for chosen database/payment templates.

^{Written for commit a50e05f. Summary will update on new commits.}

Summary by CodeRabbit

• New Features
  • Full Netlify deployment flow (sites, previews, rollbacks, domains, env vars, logs, CLI), GitHub export, payment templates, Skills marketplace, WebContainer sandbox, color theme picker, and a deployment dashboard UI.
• Integrations
  • OAuth flows for Netlify and Anthropic; GitHub and Figma integrations.
• Improvements
  • Multi‑framework support, Convex real‑time backend, OpenRouter AI providers, Polar.sh billing templates, bun-based dev commands, and expanded docs/content (roadmap, comparisons, blog, RSS).