feat: add new skills for coding standards, continuous learning, detail layout, form layout, project guidelines, security review, and verification loop

- Introduced coding standards for TypeScript and React in SKILL.md.
- Added continuous learning skill with configuration and evaluation scripts.
- Created detail layout guidelines for read-only pages.
- Established form layout rules for data-entry forms.
- Documented project guidelines for the frontend monorepo.
- Implemented security review checklist for frontend/Electron applications.
- Developed a verification loop skill for comprehensive session checks.

This commit enhances the skill set available for developers, ensuring adherence to best practices and improving code quality.

.cursor/commands/update-docs.md

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+# Update Documentation
+
+Sync docs with this frontend monorepo. Source of truth: `package.json`, `apps/web/.env.example`, and `apps/docs-dev` (VitePress).
+
+1. Read root `package.json` scripts
+   - Table of `pnpm dev:web`, `pnpm dev:showcase`, `pnpm dev:docs-dev`, `pnpm typecheck:web`, `pnpm test`, `pnpm check:all`
+
+2. Read `apps/web/.env.example`
+   - Document each `VITE_*` var (they are public to the client)
+
+3. Update `apps/docs-dev` (VitePress) and the root README
+   - Where to work (`apps/web` vs `showcase`)
+   - Module layout (`example/full-page`)
+   - Preferred `@repo/*` imports
+
+4. Do **not** generate `docs/CONTRIB.md` / `docs/RUNBOOK.md` unless those files already exist. This repo's docs app is `apps/docs-dev`.
+
+5. List docs not modified in 90+ days for manual review
+
+6. Show a diff summary
+
+Single source of truth: `package.json`, `apps/web/.env.example`, `apps/docs-dev`, `apps/showcase` (API shape).