docs: massive documentation overhaul + introduce Paige (Documentation Guide agent)

## 📚 Complete Documentation Restructure

**BMM Documentation Hub Created:**
- New centralized documentation system at `src/modules/bmm/docs/`
- 18 comprehensive guides organized by topic (7000+ lines total)
- Clear learning paths for greenfield, brownfield, and quick spec flows
- Professional technical writing standards throughout

**New Documentation:**
- `README.md` - Complete documentation hub with navigation
- `quick-start.md` - 15-minute getting started guide
- `agents-guide.md` - Comprehensive 12-agent reference (45 min read)
- `party-mode.md` - Multi-agent collaboration guide (20 min read)
- `scale-adaptive-system.md` - Deep dive on Levels 0-4 (42 min read)
- `brownfield-guide.md` - Existing codebase development (53 min read)
- `quick-spec-flow.md` - Rapid Level 0-1 development (26 min read)
- `workflows-analysis.md` - Phase 1 workflows (12 min read)
- `workflows-planning.md` - Phase 2 workflows (19 min read)
- `workflows-solutioning.md` - Phase 3 workflows (13 min read)
- `workflows-implementation.md` - Phase 4 workflows (33 min read)
- `workflows-testing.md` - Testing & QA workflows (29 min read)
- `workflow-architecture-reference.md` - Architecture workflow deep-dive
- `workflow-document-project-reference.md` - Document-project workflow reference
- `enterprise-agentic-development.md` - Team collaboration patterns
- `faq.md` - Comprehensive Q&A covering all topics
- `glossary.md` - Complete terminology reference
- `troubleshooting.md` - Common issues and solutions

**Documentation Improvements:**
- Removed all version/date footers (git handles versioning)
- Agent customization docs now include full rebuild process
- Cross-referenced links between all guides
- Reading time estimates for all major docs
- Consistent professional formatting and structure

**Consolidated & Streamlined:**
- Module README (`src/modules/bmm/README.md`) streamlined to lean signpost
- Root README polished with better hierarchy and clear CTAs
- Moved docs from root `docs/` to module-specific locations
- Better separation of user docs vs. developer reference

## 🤖 New Agent: Paige (Documentation Guide)

**Role:** Technical documentation specialist and information architect

**Expertise:**
- Professional technical writing standards
- Documentation structure and organization
- Information architecture and navigation
- User-focused content design
- Style guide enforcement

**Status:** Work in progress - Paige will evolve as documentation needs grow

**Integration:**
- Listed in agents-guide.md, glossary.md, FAQ
- Available for all phases (documentation is continuous)
- Can be customized like all BMM agents

## 🔧 Additional Changes

- Updated agent manifest with Paige
- Updated workflow manifest with new documentation workflows
- Fixed workflow-to-agent mappings across all guides
- Improved root README with clearer Quick Start section
- Better module structure explanations
- Enhanced community links with Discord channel names

**Total Impact:**
- 18 new/restructured documentation files
- 7000+ lines of professional technical documentation
- Complete navigation system with cross-references
- Clear learning paths for all user types
- Foundation for knowledge base (coming in beta)

Co-Authored-By: Claude <noreply@anthropic.com>

bmad/bmm/workflows/2-plan-workflows/tech-spec/tech-spec-template.md

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+# {{project_name}} - Technical Specification
+
+**Author:** {{user_name}}
+**Date:** {{date}}
+**Project Level:** {{project_level}}
+**Change Type:** {{change_type}}
+**Development Context:** {{development_context}}
+
+---
+
+## Context
+
+### Available Documents
+
+{{loaded_documents_summary}}
+
+### Project Stack
+
+{{project_stack_summary}}
+
+### Existing Codebase Structure
+
+{{existing_structure_summary}}
+
+---
+
+## The Change
+
+### Problem Statement
+
+{{problem_statement}}
+
+### Proposed Solution
+
+{{solution_overview}}
+
+### Scope
+
+**In Scope:**
+
+{{scope_in}}
+
+**Out of Scope:**
+
+{{scope_out}}
+
+---
+
+## Implementation Details
+
+### Source Tree Changes
+
+{{source_tree_changes}}
+
+### Technical Approach
+
+{{technical_approach}}
+
+### Existing Patterns to Follow
+
+{{existing_patterns}}
+
+### Integration Points
+
+{{integration_points}}
+
+---
+
+## Development Context
+
+### Relevant Existing Code
+
+{{existing_code_references}}
+
+### Dependencies
+
+**Framework/Libraries:**
+
+{{framework_dependencies}}
+
+**Internal Modules:**
+
+{{internal_dependencies}}
+
+### Configuration Changes
+
+{{configuration_changes}}
+
+### Existing Conventions (Brownfield)
+
+{{existing_conventions}}
+
+### Test Framework & Standards
+
+{{test_framework_info}}
+
+---
+
+## Implementation Stack
+
+{{implementation_stack}}
+
+---
+
+## Technical Details
+
+{{technical_details}}
+
+---
+
+## Development Setup
+
+{{development_setup}}
+
+---
+
+## Implementation Guide
+
+### Setup Steps
+
+{{setup_steps}}
+
+### Implementation Steps
+
+{{implementation_steps}}
+
+### Testing Strategy
+
+{{testing_strategy}}
+
+### Acceptance Criteria
+
+{{acceptance_criteria}}
+
+---
+
+## Developer Resources
+
+### File Paths Reference
+
+{{file_paths_complete}}
+
+### Key Code Locations
+
+{{key_code_locations}}
+
+### Testing Locations
+
+{{testing_locations}}
+
+### Documentation to Update
+
+{{documentation_updates}}
+
+---
+
+## UX/UI Considerations
+
+{{ux_ui_considerations}}
+
+---
+
+## Testing Approach
+
+{{testing_approach}}
+
+---
+
+## Deployment Strategy
+
+### Deployment Steps
+
+{{deployment_steps}}
+
+### Rollback Plan
+
+{{rollback_plan}}
+
+### Monitoring
+
+{{monitoring_approach}}