refactor(structure): create feature directory structure

[peterod99]

Add feature-based directory structure with barrel exports:

• admin: Admin dashboard, settings, analytics
• auth: Authentication and authorization
• chat: Chat sessions with agents
• coach: Coaching functionality
• dm: Direct messaging
• forum: Community forum
• marketing: Funnels and templates
• subscriptions: Billing and plans
• tenant: Multi-tenant infrastructure
• training: Courses and lessons

Also includes REFACTOR_PLAN.md with full refactoring strategy.

Summary by CodeRabbit

Release Notes

• Refactor
  • Reorganized service architecture by splitting monolithic services into specialized modules
  • Restructured dashboard hooks into separate, focused utilities
  • Established feature-based directory structure across the codebase
  • Created barrel export files for streamlined module access
  • Maintained full backward compatibility with existing implementations

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[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request reorganizes the codebase into a feature-based directory structure with modular domain services. It introduces feature entry points, splits the monolithic useDashboardData hook into focused dashboard-specific hooks, and replaces the unifiedKnowledgeService with five specialized knowledge domain services, all maintaining backward compatibility through facade and re-export patterns.

Changes

Cohort / File(s)	Summary
Documentation & Planning REFACTOR_LOG.md, REFACTOR_PLAN.md	Comprehensive project documentation detailing the refactoring strategy, baseline metrics, completion tracking, risk assessment, and verification procedures.
Feature Directory Scaffolding src/features/admin/index.ts, src/features/auth/index.ts, src/features/chat/index.ts, src/features/coach/index.ts, src/features/dm/index.ts, src/features/forum/index.ts, src/features/marketing/index.ts, src/features/subscriptions/index.ts, src/features/tenant/index.ts, src/features/training/index.ts	Placeholder barrel modules establishing new feature-based directory organization. Each contains descriptive headers and commented export scaffolds for future component, hook, and service migrations with no active exports.
Dashboard Hooks Refactoring src/hooks/dashboard/types.ts, src/hooks/dashboard/useDashboardAnalytics.ts, src/hooks/dashboard/useDashboardAgentUsage.ts, src/hooks/dashboard/useDashboardCosts.ts, src/hooks/dashboard/index.ts	New modular dashboard hooks split from monolithic useDashboardData. Introduces shared types (interfaces, constants, utility functions) and three focused hooks for analytics, agent usage, and cost breakdowns.
Dashboard Composition Update src/hooks/useDashboardData.tsx	Refactored to compose data from three specialized dashboard hooks rather than managing state and fetching directly. Updated return type to use imported types from ./dashboard/types. Re-exports types for backward compatibility.
Knowledge Services Modularization src/services/knowledge/types.ts, src/services/knowledge/knowledgeMetricsService.ts, src/services/knowledge/knowledgeGapsService.ts, src/services/knowledge/knowledgeAnalysisService.ts, src/services/knowledge/knowledgeQualityService.ts, src/services/knowledge/knowledgeSyncService.ts, src/services/knowledge/index.ts	Extracts knowledge domain functionality from unifiedKnowledgeService into five specialized services (Metrics, Gaps, Analysis, Quality, Sync), each with focused responsibilities. New shared types module centralizes domain interfaces. Barrel export consolidates public surface.
Knowledge Facade Refactoring src/services/unifiedKnowledgeService.ts	Converted from monolithic implementation to lightweight facade that delegates to specialized knowledge services. Removes embedded logic; methods now bind to corresponding service methods. Type definitions moved to ./knowledge/types; re-exported for backward compatibility.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Poem

🐰 A rabbit's ode to refactor day:

Feature folders bloom in ordered array,
Dashboard hooks now dance, focused and light,
Knowledge services split—each plays its part right,
Facades stay friendly for backward's good way,
Structure reborn, yet nothing goes astray! 🌿✨

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📜 Recent review details

Configuration used: defaults

Review profile: CHILL

Plan: Free

📥 Commits

Reviewing files that changed from the base of the PR and between 4ca65d1 and 0b69ffb.

📒 Files selected for processing (26)

• REFACTOR_LOG.md
• REFACTOR_PLAN.md
• src/features/admin/index.ts
• src/features/auth/index.ts
• src/features/chat/index.ts
• src/features/coach/index.ts
• src/features/dm/index.ts
• src/features/forum/index.ts
• src/features/marketing/index.ts
• src/features/subscriptions/index.ts
• src/features/tenant/index.ts
• src/features/training/index.ts
• src/hooks/dashboard/index.ts
• src/hooks/dashboard/types.ts
• src/hooks/dashboard/useDashboardAgentUsage.ts
• src/hooks/dashboard/useDashboardAnalytics.ts
• src/hooks/dashboard/useDashboardCosts.ts
• src/hooks/useDashboardData.tsx
• src/services/knowledge/index.ts
• src/services/knowledge/knowledgeAnalysisService.ts
• src/services/knowledge/knowledgeGapsService.ts
• src/services/knowledge/knowledgeMetricsService.ts
• src/services/knowledge/knowledgeQualityService.ts
• src/services/knowledge/knowledgeSyncService.ts
• src/services/knowledge/types.ts
• src/services/unifiedKnowledgeService.ts

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