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/tdd.md

@@ -0,0 +1,56 @@
+---
+description: Enforce test-driven development. Scaffold types, write Vitest tests FIRST, then implement the minimum to pass. Ensure 80%+ coverage.
+---
+
+# TDD Command
+
+This command invokes the **tdd-guide** agent.
+
+## What This Command Does
+
+1. **Scaffold types** — inputs/outputs first
+2. **Write failing tests** (RED) with Vitest
+3. **Implement the minimum** (GREEN)
+4. **Refactor** while green
+5. **Check coverage** (80%+)
+
+## When to Use
+
+- New validators, transformers, stores, components
+- Bug fixes (reproducing test first)
+- Refactors of existing logic
+
+## Cycle
+
+```
+RED → GREEN → REFACTOR → REPEAT
+```
+
+## Example
+
+```
+User: /tdd Add validation for the full-page name field
+```
+
+```typescript
+// full-page.validator.test.ts
+import { createFullPageSchema } from './full-page.validator'
+
+it('rejects an empty name', () => {
+  const schema = createFullPageSchema((k) => k)
+  expect(schema.safeParse({ code: 'ABC', name: '' }).success).toBe(false)
+})
+```
+
+```bash
+pnpm --filter web test
+pnpm test
+pnpm check:all
+```
+
+Mock `@repo/core-api` / `apiClient`, not a database. UI in `packages/ui` uses Testing Library.
+
+## Related
+
+Agent: `.cursor/agents/tdd-guide.md`
+Skill: `.agents/skills/tdd-workflow/`