fix: prevent built-in icons invalid size

Author: LeadcodeDev

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rustmotion"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 description = "A CLI tool that renders motion design videos from JSON scenarios. No browser, no Node.js — just a single Rust binary."
 license = "MIT"

Cargo.toml

@@ -2185,6 +2185,8 @@ pub(crate) fn fetch_icon_svg(icon: &str, color: &str, width: u32, height: u32) -
         .split_once(':')
         .ok_or_else(|| anyhow::anyhow!("Invalid icon format: '{}' (expected 'prefix:name')", icon))?;
     let hex_color = color.trim_start_matches('#');
+    let width = width.max(1);
+    let height = height.max(1);
     let url = format!(
         "https://api.iconify.design/{}/{}.svg?color=%23{}&width={}&height={}",
         prefix, name, hex_color, width, height