🎨 Palette: Improve Update Notification UX

.Jules/palette.md

@@ -0,0 +1,6 @@
+# Palette's Journal - Critical Learnings
+
+## 2025-12-29 - [CLI UI Constraints]
+
+**Learning:** Visual verification of CLI output requires reliable build environments; when builds are fragile, rely on existing libraries like `Rainbow` for styling but double-check their availability in the target module.
+**Action:** Always verify dependencies in `Package.swift` before adding imports, especially in environments where running the build is difficult.

Sources/ExFig/Subcommands/checkForUpdate.swift

@@ -2,6 +2,7 @@ import ArgumentParser
 import FigmaAPI
 import Foundation
 import Logging
+import Rainbow
 
 func checkForUpdate(logger: Logger) async {
     let client = GitHubClient()
@@ -12,13 +13,31 @@ func checkForUpdate(logger: Logger) async {
     let latestVersion = latestRelease.tagName
 
     if ExFigCommand.version != latestVersion {
-        logger.info("""
+        if TTYDetector.colorsEnabled {
+            let border = "──────────────────────────────────────────────────────────────"
 
-        ----------------------------------------------------------------------------
-        exfig \(latestVersion) is available. You are on \(ExFigCommand.version).
-        You should use the latest version.
-        To update, visit https://github.com/alexey1312/ExFig/releases
-        ----------------------------------------------------------------------------
-        """)
+            let message = """
+
+            \("╭\(border)".cyan)
+            \("│".cyan)
+            \("│".cyan)   \("🚀 Update Available: \(latestVersion)".bold.green)
+            \("│".cyan)      Current version: \(ExFigCommand.version)
+            \("│".cyan)
+            \("│".cyan)   To update, visit:
+            \("│".cyan)   \("https://github.com/alexey1312/ExFig/releases".blue.underline)
+            \("│".cyan)
+            \("╰\(border)".cyan)
+            """
+            logger.info(Logger.Message(stringLiteral: message))
+        } else {
+            logger.info("""
+
+            ----------------------------------------------------------------------------
+            exfig \(latestVersion) is available. You are on \(ExFigCommand.version).
+            You should use the latest version.
+            To update, visit https://github.com/alexey1312/ExFig/releases
+            ----------------------------------------------------------------------------
+            """)
+        }
     }
 }