feat: Implement Entity Suggestion Manager and Modal components

- Added EntitySuggestionManager.vue to manage entity suggestions and authentication.
- Created EntitySuggestionModal.vue for displaying suggestions and adding new entities.
- Integrated AuthManager for user authentication within the suggestion modal.
- Enhanced signal handling in start-servers.sh for graceful shutdown of servers.
- Improved server startup script to ensure proper cleanup and responsiveness to termination signals.
- Added documentation for signal handling fixes and usage instructions.

docs/system-architecture-diagram.md

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+# ThrillWiki Trending System - Technical Architecture
+
+## System Components Overview
+
+```mermaid
+graph TB
+    subgraph "Frontend Layer"
+        A[Home.vue Component] --> B[API Service Layer]
+        B --> C[Trending Content Display]
+        B --> D[New Content Display]
+    end
+    
+    subgraph "API Layer"
+        E[/api/v1/trending/] --> F[TrendingViewSet]
+        G[/api/v1/new-content/] --> H[NewContentViewSet]
+        F --> I[TrendingSerializer]
+        H --> J[NewContentSerializer]
+    end
+    
+    subgraph "Business Logic"
+        K[Trending Algorithm] --> L[Score Calculator]
+        L --> M[Weight Processor]
+        M --> N[Ranking Engine]
+    end
+    
+    subgraph "Data Layer"
+        O[PageView Model] --> P[View Tracker]
+        Q[Park Model] --> R[Content Source]
+        S[Ride Model] --> R
+        T[pghistory Events] --> U[Change Tracker]
+    end
+    
+    subgraph "Caching Layer"
+        V[Redis Cache] --> W[Trending Cache]
+        V --> X[New Content Cache]
+        W --> Y[6hr TTL]
+        X --> Z[24hr TTL]
+    end
+    
+    subgraph "Background Tasks"
+        AA[Management Command] --> BB[Calculate Trending]
+        CC[Celery/Cron Scheduler] --> AA
+        BB --> K
+        BB --> V
+    end
+    
+    subgraph "Middleware"
+        DD[View Tracking Middleware] --> O
+        EE[User Request] --> DD
+    end
+    
+    A --> E
+    A --> G
+    F --> K
+    H --> U
+    K --> O
+    K --> Q
+    K --> S
+    F --> V
+    H --> V
+    EE --> A
+```
+
+## Data Flow Architecture
+
+```mermaid
+sequenceDiagram
+    participant U as User
+    participant F as Frontend
+    participant API as API Layer
+    participant C as Cache
+    participant BG as Background Job
+    participant DB as Database
+    participant M as Middleware
+    
+    Note over U,M: Page View Tracking
+    U->>F: Visit Park/Ride Page
+    F->>M: HTTP Request
+    M->>DB: Store PageView Record
+    
+    Note over U,M: Trending Content Request
+    U->>F: Load Home Page
+    F->>API: GET /api/v1/trending/?tab=rides
+    API->>C: Check Cache
+    alt Cache Hit
+        C->>API: Return Cached Data
+    else Cache Miss
+        API->>DB: Query Trending Data
+        DB->>API: Raw Data
+        API->>API: Apply Algorithm
+        API->>C: Store in Cache
+    end
+    API->>F: Trending Response
+    F->>U: Display Trending Content
+    
+    Note over U,M: Background Processing
+    BG->>DB: Aggregate PageViews
+    BG->>DB: Calculate Scores
+    BG->>C: Update Cache
+```
+
+## Algorithm Flow
+
+```mermaid
+flowchart TD
+    A[Start Trending Calculation] --> B[Fetch Recent PageViews]
+    B --> C[Group by Content Type/ID]
+    C --> D[Calculate View Score]
+    D --> E[Fetch Content Ratings]
+    E --> F[Calculate Rating Score]
+    F --> G[Calculate Recency Score]
+    G --> H[Apply Weighted Formula]
+    H --> I{Score > Threshold?}
+    I -->|Yes| J[Add to Trending List]
+    I -->|No| K[Skip Item]
+    J --> L[Sort by Final Score]
+    K --> L
+    L --> M[Cache Results]
+    M --> N[End]
+```
+
+## Database Schema Relationships
+
+```mermaid
+erDiagram
+    PageView ||--o{ ContentType : references
+    PageView {
+        id bigint PK
+        content_type_id int FK
+        object_id int
+        user_session varchar
+        ip_address inet
+        user_agent text
+        timestamp datetime
+    }
+    
+    Park ||--o{ PageView : tracked_in
+    Park {
+        id int PK
+        name varchar
+        slug varchar
+        average_rating decimal
+        status varchar
+        opening_date date
+        closing_date date
+    }
+    
+    Ride ||--o{ PageView : tracked_in
+    Ride {
+        id int PK
+        name varchar
+        slug varchar
+        park_id int FK
+        average_rating decimal
+        category varchar
+        status varchar
+        opening_date date
+    }
+    
+    TrendingCache {
+        key varchar PK
+        data json
+        expires_at datetime
+    }