Add Ruchy language support

[noahgift]

Summary

Adds syntax highlighting support for the Ruchy programming language.

Language Overview

Ruchy is a modern systems programming language featuring:

• Actor model concurrency with message passing
• Pipeline operators for functional data transformation
• Rust-like syntax with memory safety
• Pattern matching and functional constructs

Implementation Details

• Complete language definition (src/languages/ruchy.js)
• Detection tests (test/detect/ruchy/default.txt)
• Markup tests (test/markup/ruchy/default.txt)

File Extensions

• .rhy (primary)
• .ruchy (alternative)

Language Aliases

• ruchy
• Ruchy

Key Syntax Features

// Actor definitions
actor Counter {
    let mut count: i32 = 0;
    
    receive Increment(n) -> {
        count += n;
    }
    
    receive GetCount -> count
}

// Actor instantiation and messaging
let counter = spawn!(Counter);
counter <- Increment(5);          // Send message
let result = counter <? GetCount; // Ask pattern

// Pipeline operations
data >> validate >> transform >> persist

// Pattern matching
match value {
    Some(x) if x > 0 -> println!("Positive: {}", x),
    Some(x) -> println!("Non-positive: {}", x),
    None -> println!("No value"),
}

Syntax Highlighting Coverage

• ✅ Keywords (fn, let, mut, actor, spawn, receive, match, etc.)
• ✅ Types (i32, String, bool, etc.)
• ✅ Operators (>>, <-, <?, =>, etc.)
• ✅ Literals (strings, numbers, booleans)
• ✅ Comments (line and block)
• ✅ Macros and built-ins (println!, spawn!, etc.)
• ✅ Attributes and decorators

Testing

All detection and markup tests pass, correctly identifying Ruchy code and applying appropriate syntax highlighting.

🤖 Generated with Claude Code