Complete piglet implementation with animations and effects

- Implement complete animation system with 20+ motion effects
- Add 18+ easing functions (quad, cubic, elastic, back, bounce)
- Implement color system with palette and gradient support
- Add parser for durations, colors, and CSS gradients
- Create comprehensive test suite (14 tests passing)
- Add linting and formatting with clippy/rustfmt
- Support for figlet integration with custom fonts
- Terminal rendering with crossterm
- Fix all clippy warnings and lint issues

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/main.rs

@@ -1,31 +1,31 @@
-mod cli;
-mod figlet;
-mod color;
 mod animation;
+mod cli;
+mod color;
+mod figlet;
 mod parser;
 mod utils;
 
 use anyhow::Result;
-use cli::PigletCli;
 use clap::Parser;
+use cli::PigletCli;
 
 #[tokio::main]
 async fn main() -> Result<()> {
     // Parse CLI arguments
     let args = PigletCli::parse();
-    
+
     // Show banner on first run
     if std::env::args().len() == 1 {
         show_welcome();
         return Ok(());
     }
-    
+
     // Verify figlet is installed
     figlet::FigletWrapper::check_installed()?;
-    
+
     // Run the piglet magic
     run_piglet(args).await?;
-    
+
     Ok(())
 }
 
@@ -33,69 +33,67 @@ async fn run_piglet(args: PigletCli) -> Result<()> {
     use crate::animation::AnimationEngine;
     use crate::color::ColorEngine;
     use crate::utils::terminal::TerminalManager;
-    
+
     // Parse duration
     let duration_ms = parser::duration::parse_duration(&args.duration)?;
-    
+
     // Create figlet wrapper and render base ASCII art
     let figlet = figlet::FigletWrapper::new()
         .with_font(args.font.as_deref())
         .with_args(args.figlet_args);
-    
+
     let ascii_art = figlet.render(&args.text)?;
-    
+
     // Setup color engine
     let color_engine = ColorEngine::new()
-        .with_palette(args.color_palette.as_deref())
+        .with_palette(args.color_palette.as_deref())?
         .with_gradient(args.color_gradient.as_deref())?;
-    
+
     // Setup animation engine
-    let animation_engine = AnimationEngine::new(
-        ascii_art,
-        duration_ms,
-        args.fps,
-    )
-    .with_effect(&args.motion_effect)?
-    .with_easing(&args.motion_ease)?
-    .with_color_engine(color_engine);
-    
+    let animation_engine = AnimationEngine::new(ascii_art, duration_ms, args.fps)
+        .with_effect(&args.motion_effect)?
+        .with_easing(&args.motion_ease)?
+        .with_color_engine(color_engine);
+
     // Setup terminal
     let mut terminal = TerminalManager::new()?;
     terminal.setup()?;
-    
+
     // Run animation
     loop {
         animation_engine.run(&mut terminal).await?;
-        
+
         if !args.loop_animation {
             break;
         }
     }
-    
+
     // Cleanup
     terminal.cleanup()?;
-    
+
     Ok(())
 }
 
 fn show_welcome() {
-    println!(r#"
-    ____  _       __     __ 
+    println!(
+        r"
+    ____  _       __     __
    / __ \(_)___ _/ /__  / /_
   / /_/ / / __ `/ / _ \/ __/
- / ____/ / /_/ / /  __/ /_  
-/_/   /_/\__, /_/\___/\__/  
-        /____/               
-        
+ / ____/ / /_/ / /  __/ /_
+/_/   /_/\__, /_/\___/\__/
+        /____/
+
 🐷 Piglet - Animated Figlet Wrapper
 
 Usage: piglet [TEXT] [OPTIONS]
 
 Examples:
-  piglet "Hello" -p "#FF5733,#33FF57"
-  piglet "World" -g "linear-gradient(90deg, red, blue)" -e fade-in
-  piglet "Cool!" -e typewriter -d 2s -i ease-out
+  piglet Hello -p red,blue,green
+  piglet World -g linear-gradient(90deg, red, blue) -e fade-in
+  piglet Cool! -e typewriter -d 2s -i ease-out
 
 Run 'piglet --help' for more information.
-"#);
-}
+"
+    );
+}