feat: convert ASCII art diagrams to Mermaid format

- Convert EVM plugin architecture diagram to Mermaid flowchart
- Convert Solana plugin architecture diagram to Mermaid flowchart
- Convert SQL plugin architecture diagram to Mermaid flowchart
- Improves consistency across documentation
- Makes diagrams more maintainable and scalable

Author: wtfsayo

plugins/defi/evm/complete-documentation.mdx

@@ -9,17 +9,13 @@ This guide provides an in-depth look at the EVM plugin's architecture, component
 
 The EVM plugin follows a modular architecture with clear separation of concerns:
 
-```
-┌─────────────────┐     ┌──────────────┐     ┌──────────────┐
-│     Actions     │────▶│   Service    │────▶│  Blockchain  │
-│  (User Intent)  │     │  (EVMService)│     │   (Viem)     │
-└─────────────────┘     └──────────────┘     └──────────────┘
-         │                      │
-         ▼                      ▼
-┌─────────────────┐     ┌──────────────┐
-│    Templates    │     │  Providers   │
-│  (AI Prompts)   │     │ (Data Supply)│
-└─────────────────┘     └──────────────┘
+```mermaid
+flowchart LR
+    A[Actions<br/>User Intent] --> B[Service<br/>EVMService]
+    B --> C[Blockchain<br/>Viem]
+    
+    A --> D[Templates<br/>AI Prompts]
+    B --> E[Providers<br/>Data Supply]
 ```
 
 ## Core Components

plugins/defi/solana/complete-documentation.mdx

@@ -9,17 +9,14 @@ This guide provides comprehensive documentation of the Solana plugin's architect
 
 The Solana plugin follows a modular architecture optimized for high-performance blockchain interactions:
 
-```
-┌─────────────────┐     ┌──────────────┐     ┌──────────────┐
-│     Actions     │────▶│ SolanaService│────▶│  Solana RPC  │
-│  (User Intent)  │     │  (Core Logic)│     │  Connection  │
-└─────────────────┘     └──────────────┘     └──────────────┘
-         │                      │                     │
-         ▼                      ▼                     ▼
-┌─────────────────┐     ┌──────────────┐     ┌──────────────┐
-│   AI Templates  │     │   Providers  │     │ Birdeye API  │
-│  (NLP Parsing)  │     │ (Wallet Data)│     │ (Price Data) │
-└─────────────────┘     └──────────────┘     └──────────────┘
+```mermaid
+flowchart LR
+    A[Actions<br/>User Intent] --> B[SolanaService<br/>Core Logic]
+    B --> C[Solana RPC<br/>Connection]
+    
+    A --> D[AI Templates<br/>NLP Parsing]
+    B --> E[Providers<br/>Wallet Data]
+    C --> F[Birdeye API<br/>Price Data]
 ```
 
 ## Core Components

plugins/sql.mdx

@@ -35,24 +35,13 @@ The `@elizaos/plugin-sql` provides comprehensive database management for elizaOS
 
 The plugin consists of several key components:
 
-```
-┌─────────────────────────────────┐
-│      elizaOS Runtime            │
-└────────────┬────────────────────┘
-             │
-┌────────────▼────────────────────┐
-│    DatabaseMigrationService     │
-│  • Schema Discovery             │
-│  • Migration Orchestration      │
-└────────────┬────────────────────┘
-             │
-┌────────────▼────────────────────┐
-│      Database Adapters          │
-├─────────────────────────────────┤
-│ PGLite Adapter │ PG Adapter     │
-│ • Development  │ • Production   │
-│ • File-based   │ • Pooled       │
-└────────────────┴────────────────┘
+```mermaid
+flowchart TD
+    A[elizaOS Runtime] --> B[DatabaseMigrationService<br/>• Schema Discovery<br/>• Migration Orchestration]
+    B --> C[Database Adapters]
+    
+    C --> D[PGLite Adapter<br/>• Development<br/>• File-based]
+    C --> E[PG Adapter<br/>• Production<br/>• Pooled]
 ```
 
 ## Core Components