feat(agents): implement cs-content-creator and cs-demand-gen-specialist agents
Day 2: Marketing Agents - Complete implementation of two production-ready
marketing agents with comprehensive workflows and skill integration.
## cs-content-creator
- AI-powered content creation specialist
- Brand voice analysis and SEO optimization
- 4 complete workflows: blog post creation, multi-platform adaptation,
content audit, campaign planning
- Integration with brand_voice_analyzer.py and seo_optimizer.py tools
- Success metrics: 80%+ brand consistency, 75+ SEO score average
## cs-demand-gen-specialist
- Demand generation and customer acquisition specialist
- CAC calculation and conversion funnel optimization
- 4 complete workflows: multi-channel campaign launch, funnel analysis,
channel benchmarking, lead magnet development
- Integration with calculate_cac.py tool
- Success metrics: 20-30% MOM growth, 15-20% CAC reduction
## Quality Validation
✅ YAML frontmatter with all required fields
✅ cs-* prefix naming convention
✅ Relative paths (../../) tested and validated
✅ 4 workflows per agent (exceeds minimum 3)
✅ Integration examples with real bash scripts
✅ Success metrics defined
✅ Related agents cross-referenced
Sprint: sprint-11-05-2025 (Day 2)
Issue: #11
Files: 2 agent files, 1,089 total lines
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