docs: consolidate and restructure documentation architecture

- Remove outdated root-level documentation files
  - Delete IMPLEMENTATION_STATUS.md, WORK_IN_PROGRESS.md, UI_IMPROVEMENTS_SUMMARY.md, CLAUDE.md

- Reorganize documentation into docs/ folder
  - Move UNIFIED_EDITOR_EXPERIENCES.md → docs/unified-editor-experiences.md
  - Move DATATABLE_MIGRATION_PROGRESS.md → docs/datatable-migration-progress.md
  - Move SEED_SCRIPT_README.md → docs/seed-script-readme.md

- Create comprehensive new documentation
  - Add docs/implementation-status.md with production readiness assessment
  - Add docs/work-in-progress.md with active development tracking
  - Add docs/development-achievements.md consolidating all major accomplishments

- Update documentation hub
  - Enhance docs/README.md with complete 13-document structure
  - Organize into logical categories: Core, Status, Achievements
  - Provide clear navigation and purpose for each document

Features:
- 73% code reduction achievement through unified editor experiences
- Complete DataTable migration with enterprise features
- Comprehensive seed database with realistic research scenarios
- Production-ready status with 100% backend, 95% frontend completion
- Clean documentation architecture supporting future development

Breaking Changes: None - documentation restructuring only
Migration: Documentation moved to docs/ folder, no code changes required

docs/seed-script-readme.md

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+# HRIStudio Seed Script Documentation
+
+## Overview
+
+The HRIStudio seed script (`scripts/seed-dev.ts`) provides a comprehensive development database with realistic test data for all major entities in the system. This script is designed to give developers and testers a fully functional environment with diverse scenarios to work with.
+
+## Quick Start
+
+Run the seed script with:
+
+```bash
+bun run db:seed
+```
+
+**Note**: This script will completely clean the database before seeding new data.
+
+## Default Login Credentials
+
+### Primary Administrator Account
+- **Email**: `sean@soconnor.dev`
+- **Password**: `password123`
+- **Role**: Administrator
+- **Access**: Full system access and user management
+
+### Additional Test Users
+All users use the same password: `password123`
+
+- **alice.rodriguez@university.edu** (Researcher)
+- **bob.chen@research.org** (Researcher)  
+- **emily.watson@lab.edu** (Wizard)
+- **maria.santos@tech.edu** (Researcher)
+
+## Seeded Data Structure
+
+### 🤖 Robots (3 total)
+1. **NAO Robot** (SoftBank Robotics, V6)
+   - Capabilities: Speech, movement, vision, touch, LEDs
+   - Status: Available
+   - Connection: WiFi
+
+2. **Pepper Robot** (SoftBank Robotics)
+   - Capabilities: Speech, movement, vision, touch, tablet
+   - Status: Available
+   - Connection: WiFi
+
+3. **TurtleBot3** (ROBOTIS, Burger)
+   - Capabilities: Movement, vision, LiDAR
+   - Status: Maintenance
+   - Connection: ROS2
+
+### 📚 Studies (3 total)
+
+#### 1. Robot-Assisted Learning in Elementary Education
+- **Owner**: Alice Rodriguez
+- **Institution**: University of Technology
+- **IRB Protocol**: IRB-2024-001
+- **Status**: Active
+- **Team**: Alice (Owner), Emily (Wizard), Sean (Observer)
+- **Focus**: Mathematics learning for elementary students
+
+#### 2. Elderly Care Robot Acceptance Study
+- **Owner**: Bob Chen
+- **Institution**: Research Institute for Aging
+- **IRB Protocol**: IRB-2024-002
+- **Status**: Active
+- **Team**: Bob (Owner), Alice (Researcher), Emily (Wizard)
+- **Focus**: Companion robots in assisted living
+
+#### 3. Navigation Robot Trust Study
+- **Owner**: Maria Santos
+- **Institution**: Tech University
+- **IRB Protocol**: IRB-2024-003
+- **Status**: Draft
+- **Team**: Maria (Owner), Sean (Researcher)
+- **Focus**: Trust in autonomous navigation robots
+
+### 👤 Participants (8 total)
+
+#### Elementary Education Study
+- **CHILD_001**: Alex Johnson (8, male, grade 3)
+- **CHILD_002**: Emma Davis (9, female, grade 4)
+- **CHILD_003**: Oliver Smith (8, male, grade 3)
+
+#### Elderly Care Study
+- **ELDERLY_001**: Margaret Thompson (78, female, retired teacher)
+- **ELDERLY_002**: Robert Wilson (82, male, retired engineer)
+- **ELDERLY_003**: Dorothy Garcia (75, female, retired nurse)
+
+#### Navigation Study
+- **ADULT_001**: James Miller (28, male, engineer)
+- **ADULT_002**: Sarah Brown (34, female, teacher)
+
+### 🧪 Experiments (5 total)
+
+1. **Math Tutoring Session** (NAO Robot)
+   - Study: Elementary Education
+   - Duration: 30 minutes
+   - Status: Ready
+
+2. **Reading Comprehension Support** (NAO Robot)
+   - Study: Elementary Education
+   - Duration: 25 minutes
+   - Status: Testing
+
+3. **Daily Companion Interaction** (Pepper Robot)
+   - Study: Elderly Care
+   - Duration: 45 minutes
+   - Status: Ready
+
+4. **Medication Reminder Protocol** (Pepper Robot)
+   - Study: Elderly Care
+   - Duration: 15 minutes
+   - Status: Draft
+
+5. **Campus Navigation Assistance** (TurtleBot3)
+   - Study: Navigation Trust
+   - Duration: 20 minutes
+   - Status: Ready
+
+### 📋 Experiment Steps (8 total)
+
+Each experiment includes detailed steps with specific durations and requirements:
+
+- **Welcome and Introduction** steps for user engagement
+- **Task-specific steps** (math problems, companion interaction, navigation)
+- **Feedback and encouragement** phases
+- **Health check-ins** for elderly participants
+
+### 🏃 Trials (7 total)
+
+#### Completed Trials (3)
+- Alex Johnson: Math tutoring (27 min, successful)
+- Emma Davis: Math tutoring (26 min, successful)
+- Margaret Thompson: Companion interaction (45 min, successful)
+
+#### In-Progress Trial (1)
+- Oliver Smith: Math tutoring (currently active)
+
+#### Scheduled Trials (3)
+- Robert Wilson: Companion interaction (tomorrow)
+- James Miller: Navigation assistance (next week)
+- Alex Johnson: Follow-up math session (next week)
+
+### 📝 Trial Events (18 total)
+
+Comprehensive event logs for completed and in-progress trials including:
+- Trial start/completion timestamps
+- Step progression tracking
+- Robot action logs
+- Performance metrics
+- Duration tracking
+
+## Database Schema Coverage
+
+The seed script populates the following tables:
+- ✅ `users` - Authentication and user profiles
+- ✅ `userSystemRoles` - Role-based access control
+- ✅ `robots` - Available robot platforms
+- ✅ `studies` - Research study containers
+- ✅ `studyMembers` - Study team memberships
+- ✅ `participants` - Study participants with demographics
+- ✅ `experiments` - Experimental protocols
+- ✅ `steps` - Experiment step definitions
+- ✅ `trials` - Individual trial instances
+- ✅ `trialEvents` - Detailed trial execution logs
+
+## Use Cases for Testing
+
+### Authentication & Authorization
+- Test login with different user roles
+- Verify role-based access restrictions
+- Test study membership permissions
+
+### Study Management
+- Create new studies and experiments
+- Manage study team memberships
+- Test study status workflows
+
+### Experiment Design
+- Modify existing experiment templates
+- Create new experimental steps
+- Test robot integration scenarios
+
+### Trial Execution
+- Practice wizard interface with in-progress trial
+- Review completed trial data
+- Test trial scheduling and management
+
+### Data Analysis
+- Analyze trial performance metrics
+- Export trial event data
+- Generate study reports
+
+### Participant Management
+- Add new participants to studies
+- Manage consent and demographics
+- Test participant communication
+
+## Realistic Scenarios
+
+The seed data includes realistic scenarios based on actual HRI research:
+
+1. **Child-Robot Learning**: Age-appropriate math tutoring with emotional support
+2. **Elderly Care**: Health monitoring and social companionship
+3. **Navigation Trust**: Public space robot guidance and safety
+4. **Multi-session Studies**: Follow-up trials and retention testing
+5. **Team Collaboration**: Multi-role study teams with different permissions
+
+## Development Workflow
+
+1. **Reset Database**: Run seed script to start fresh
+2. **Login**: Use admin account for full access
+3. **Explore**: Navigate through studies, experiments, and trials
+4. **Test Features**: Create new entities or modify existing ones
+5. **Verify**: Check role-based permissions with different user accounts
+
+## Data Consistency
+
+The seed script ensures:
+- Proper foreign key relationships
+- Realistic timestamps and durations
+- Appropriate role assignments
+- Valid experimental workflows
+- Comprehensive audit trails
+
+## Security Notes
+
+- All passwords are hashed using bcrypt
+- Sensitive participant data is stored in JSONB fields (ready for encryption)
+- Role-based access is properly configured
+- Admin privileges are limited to designated accounts
+
+## Future Enhancements
+
+The seed script can be extended to include:
+- Plugin system data
+- Media capture references
+- Consent form templates
+- Export job histories
+- Advanced robot configurations
+
+This comprehensive seed data provides a solid foundation for developing and testing all aspects of the HRIStudio platform.