docs: add v1.0.0 planning prompt for production-ready release
Add comprehensive planning document for v1.0.0 including:
Analysis:
- Current codebase state (v0.5.0)
- Missing production components
- Performance targets
Team Assignments (19 tasks total):
- @spec-architect: 3 tasks (Architecture, Security audit, Tech debt)
- @db-engineer: 3 tasks (Optimization, Backup, Archiving)
- @backend-dev: 5 tasks (Redis, Async, API v2, Monitoring, Security)
- @frontend-dev: 4 tasks (Performance, UX, Analytics, A11y/i18n)
- @devops-engineer: 4 tasks (Deployment, AWS, Monitoring, SLA)
- @qa-engineer: 3 tasks (Performance testing, E2E, Security testing)
Timeline: 8 weeks with clear milestones
Success criteria: Performance, Reliability, Security, Observability
Ready for team kickoff!
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