feat: Enhance plugin store and experiment design infrastructure

- Add plugin store system with dynamic loading of robot actions
- Implement plugin store API routes and database schema
- Update experiment designer to support plugin-based actions
- Refactor environment configuration and sidebar navigation
- Improve authentication session handling with additional user details
- Update Tailwind CSS configuration and global styles
- Remove deprecated files and consolidate project structure

docs/plan.md

@@ -0,0 +1,119 @@
+# HRIStudio Development Plan
+
+## Immediate Goal: Paper Submission (1 Month)
+Focus on delivering a functional experiment designer that demonstrates the platform's capabilities for Wizard-of-Oz HRI studies.
+
+### 1. Experiment Designer Core
+- [x] Basic flow-based designer UI
+- [ ] Step containers with drag-and-drop, that can contain sets of actions
+- [ ] Action node system
+  - [ ] Action schema definition
+  - [ ] Visual node editor
+  - [ ] Connection validation
+  - [ ] Parameter configuration UI
+
+### 2. Plugin System
+- [x] Plugin store infrastructure
+- [x] Basic plugin loading mechanism
+- [ ] Action Libraries
+  - [ ] Wizard Actions
+    - [ ] Robot movement control
+    - [ ] Speech synthesis
+    - [ ] Gesture control
+  - [ ] TurtleBot3 Integration
+    - [ ] ROS2 message types
+    - [ ] Movement actions
+    - [ ] Sensor feedback
+  - [ ] Experiment Flow
+    - [ ] Timing controls
+    - [ ] Wait conditions
+    - [ ] Participant input handling
+    - [ ] Data recording triggers
+
+### 3. Execution Engine
+- [ ] Step execution pipeline
+- [ ] Action validation
+- [ ] Real-time monitoring
+- [ ] Data collection
+  - [ ] Action logs
+  - [ ] Timing data
+  - [ ] Participant responses
+
+## Future Extensions
+
+### 1. Enhanced Plugin Ecosystem
+- Community plugin repository
+- Plugin versioning and compatibility
+- Custom action development tools
+
+### 2. Advanced Experiment Features
+- Conditional branching
+- Dynamic parameter adjustment
+- Multi-robot coordination
+- Real-time visualization
+
+### 3. Data Analysis Tools
+- Session replay
+- Data export
+- Analysis templates
+- Visualization tools
+
+## Technical Requirements
+
+### Action Schema
+```typescript
+interface ActionDefinition {
+  actionId: string;
+  type: ActionType;
+  title: string;
+  description: string;
+  parameters: {
+    type: "object";
+    properties: Record<string, {
+      type: string;
+      title: string;
+      description?: string;
+      default?: any;
+      minimum?: number;
+      maximum?: number;
+      enum?: string[];
+      unit?: string;
+    }>;
+    required: string[];
+  };
+  ros2?: {
+    messageType: string;
+    topic?: string;
+    service?: string;
+    action?: string;
+    payloadMapping: {
+      type: "direct" | "transform";
+      map?: Record<string, string>;
+      transformFn?: string;
+    };
+    qos?: {
+      reliability: "reliable" | "best_effort";
+      durability: "volatile" | "transient_local";
+      history: "keep_last" | "keep_all";
+      depth?: number;
+    };
+  };
+}
+```
+
+### Plugin Structure
+```
+plugin-name/
+├── plugin.json       # Plugin metadata and action definitions
+├── transforms.ts     # Custom transform functions
+├── validators.ts     # Parameter validation
+└── assets/          # Icons and documentation
+```
+
+## Implementation Priority
+1. Core action system and visual editor
+2. Basic wizard actions (movement, speech)
+3. TurtleBot3 integration
+4. Flow control actions
+5. Data collection
+6. Analysis tools