docs(milestone): complete v0.1-nextcraft-ui-prototype

---ci---
phase: 7
milestone: v0.1
status: complete
requirements:
  covered: [REQ-001, REQ-002, REQ-003, REQ-004, REQ-005, REQ-006, REQ-007, REQ-008, REQ-009, REQ-010, REQ-011, REQ-012, REQ-013, REQ-014, REQ-015, REQ-016, REQ-017, REQ-018, REQ-019, REQ-020, REQ-021, REQ-022, REQ-023, REQ-024, REQ-025, REQ-026, REQ-027, REQ-028]
  partial: []
---/ci---

Milestone v0.1 (nextcraft-ui-prototype) complete.

Summary:
- 7 phases (P0 pre-execution + P1-P6 execution + P7 final review)
- 28 requirements covered (all complete)
- 4 surfaces: Learner (7 pages), Marketplace (5), Employer Dashboard (4), Admin (4)
- 19 routes, 104 TypeScript files
- Shared component library (5 primitives + design tokens)
- Mock data: 5 competency stacks (70 competencies), 20 jobs, 15 candidates, 10 employers
- Tech: Next.js 15, Tailwind CSS v4, lucide-react, recharts, @xyflow/react, Inter font
- Storybook with 6 stories
- Dark mode, breadcrumbs, role switcher, responsive design
- Build passes, typecheck passes, Storybook build passes

Phases:
  P0 pre-execution     → v0.0.1
  P1 project-scaffolding → v0.0.2
  P2 learner-surface   → v0.0.3
  P3 marketplace-surface → v0.0.4
  P4 employer-dashboard → v0.0.5
  P5 admin-surface     → v0.0.6
  P6 polish-integration → v0.0.7
  P7 final-review-ship → v0.1.0 (milestone release)

.gitignore

@@ -0,0 +1,45 @@
+# Environment files — never commit credentials
+.env
+.env.secrets
+.env.*
+!.env.example
+
+# CIAgent secrets
+.ciagent/.env.secrets
+
+# Dependencies
+node_modules/
+__pycache__/
+*.pyc
+.venv/
+venv/
+
+# Build artifacts
+dist/
+/build/
+.next/
+.turbo/
+*.tsbuildinfo
+
+# Storybook
+storybook-static/
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Test coverage
+coverage/
+.nyc_output/