Render HackMD markdown server-side, add markdown helpers, migrate ESLint config and bump deps

[Taombawkry]

Motivation

• Render HackMD markdown to HTML once in a shared helper to produce safe previews and consistent blog pages.
• Extract plain text from rendered HTML so the blog list can show readable excerpts without inline HTML.
• Move to the new ESLint config format and upgrade eslint to a newer major to stay compatible with tooling.
• Temporarily disable Prisma DB access while Supabase is down and tighten some React effect dependency lists.

Description

• Added renderMarkdownToHtml and extractPlainTextFromHtml helpers to packages/dapp/src/lib/hackMD.ts and imported remark/unified to centralize markdown->HTML rendering and plaintext extraction.
• Refactored the blog page packages/dapp/src/app/(main)/blog/[id]/page.tsx to use renderMarkdownToHtml, added NotePageProps, a robust title fallback, and improved error UI.
• Updated packages/dapp/src/components/BlogList.tsx to pre-render note previews (markdown->HTML->plain text), increase excerpt length, trim excerpts, and make each blog card a linked block for better accessibility and UX.
• Migrated ESLint config from .eslintrc.json to packages/dapp/eslint.config.mjs, bumped eslint in packages/dapp/package.json, updated the pnpm lockfile, set packages/dapp/config/db.ts to temporarily disable Prisma, and expanded useEffect dependency arrays in the ticket purchase component.

Testing

• Ran TypeScript compilation and the Next app type checks, which completed successfully.
• Executed linting and formatting checks against the updated ESLint/Prettier configuration, which succeeded.
• Ran the project's automated test suite, and the tests passed with no regressions detected.

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Codex Task

[netlify]

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