Update Svelte to 5.49.0 (#121)

* Initial plan

* Update Svelte from 5.38.6 to 5.49.0

Co-authored-by: argyleink <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: argyleink <[email protected]>

Author: Copilot

package-lock.json

@@ -22,7 +22,7 @@
 		"jsdom": "^26.1.0",
 		"prettier": "^3.6.2",
 		"prettier-plugin-svelte": "^3.4.0",
-		"svelte": "^5.38.6",
+		"svelte": "^5.49.0",
 		"svelte-check": "^4.3.1",
 		"svooltip": "^0.9.0",
 		"typescript": "^5.9.2",