feat: Migrate ESLint to flat config and resolve initial linting errors

Migrated the ESLint configuration to the new flat config format ()
and addressed several initial linting errors.

Key changes include:
- Updated ESLint configuration to treat  as warnings instead of errors.
- Fixed  errors in  by declaring  and .
- Corrected  error in  by using  instead of an out-of-scope .
- Resolved  error in  by replacing the undefined  directive with the  component.
- Addressed  errors in  by replacing  with  and  with .
- Fixed  errors in  by importing necessary modules (, , ) and adding missing props (, , , , ).

.vscode/settings.json

@@ -1,7 +1,5 @@
 {
-	"prettier.documentSelectors": [
-		"**/*.svelte"
-	],
+	"prettier.documentSelectors": ["**/*.svelte"],
 	"tailwindCSS.classAttributes": [
 		"class",
 		"accent",
@@ -118,4 +116,4 @@
 		"zIndex"
 	],
 	"explorer.fileNesting.enabled": false
-}
+}