fix: comprehensive context system audit and restructuring (#150)

* chore: bump version to v0.8.0

* chore: update version to 0.7.1 instead of 0.8.0

* docs: expand comparison table with Oh My OpenCode and additional features

* backup: development context before reorganization

* refactor(context): reorganize development folder

- Remove 7 duplicate files (ui/design files exist in ui/web/)
- Remove 2 redundant READMEs (use navigation.md instead)
- Move react-patterns.md to frontend/react/
- Create frontend/react/navigation.md
- Update 4 navigation files (development, ui, frontend, frontend/react)
- Update developer profile (4 path changes: ui-styling-standards, design-systems, design-assets, animation-patterns)
- Update 3 core context files (visual-development.md, design-iteration.md, file-locations.md)

Result: 29 context files (down from 36), no duplicates, clean structure

Refs: REORGANIZATION_PLAN.md, REORGANIZATION_SUMMARY.md

* docs(context): add frontend delegation guide

- Create when-to-delegate.md with clear decision criteria
- Decision matrix for when to delegate vs. handle directly
- Common patterns and examples
- Red flags and green flags
- Frontend-specialist capabilities reference
- Update frontend and development navigation files

Helps orchestrators decide when to delegate UI work to frontend-specialist subagent.

* feat: enhance developer and advanced profiles with UI, development, and system builder context

- Developer profile: Add UI/UX patterns, development principles, design systems, React patterns, animation patterns, styling standards, and design assets
- Full profile: Add same UI/development context as developer profile for consistency
- Advanced profile: Add comprehensive system builder context including templates, guides, context system standards, and repository management context
- Update profile descriptions to reflect new capabilities
- All context files verified to exist and are properly referenced

* fix: remove duplicate context entries with incorrect paths

- Remove duplicate design-assets, ui-styling-standards, clean-code, animation-patterns, design-systems, react-patterns, and api-design entries that pointed to wrong paths
- Remove non-existent development-readme and mastra-ai-readme entries
- Keep only correct entries with proper file paths
- All registry paths now validated and correct

* feat: add add-context command to registry and all profiles

- Register add-context command in registry.json
- Add command:add-context to all 5 profiles (essential, developer, business, full, advanced)
- Update add-context.md to mention external-context files in .tmp/ directory
- Fix command dependencies to use context IDs instead of full paths
- All registry paths and dependencies validated

* feat: enhance add-context with external context file management

- Add Stage 0: Detect external context files in .tmp/
- Offer options to extract, manage, or harvest external files
- Extract patterns from external context files for use in project intelligence
- Provide management options: update, remove, clean, or harvest
- Add examples showing external context extraction and management
- Update troubleshooting with external context file handling
- Integrate with /context harvest command for permanent context organization

* fix: comprehensive context system audit and restructuring

- Fix 6 command documentation inconsistencies in add-context.md
  * Correct /add-context vs /context harvest command references
  * Simplify Stage 0 workflow from 4 to 2 options
  * Update examples to match actual behavior
  * Remove non-existent operations from delegation section
  * Fix troubleshooting Q&A section

- Restructure registry.json with 4 major improvements
  * Replace 31 duplicate 'navigation' IDs with unique IDs per subfolder
    - core-navigation, development-navigation, openagents-repo-navigation, etc.
  * Add context:openagents-repo/* to developer and full profiles
    - Developers now have repo-specific guides and examples
  * Remove context:to-be-consumed/* from essential, developer, business, full
    - Keep only in advanced profile for system builders
  * Properly scope mastra-ai context via wildcard patterns

Validation Results:
- Registry: 220/220 paths valid, 0 missing dependencies
- Profiles: All appropriately scoped with no duplicate IDs
- Standards: MVI compliance, frontmatter, structure verified
- No regressions: All tests passing

Fixes issues with context organization, command consistency, and profile coverage.

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>