Fix typos, and refactor code for clarity

[WSHAPER]

• Corrected typo saftyThreshold to safetyThreshold in multiple files to improve setting consistency.
• Renamed AssistantSuggestor to AssistantSuggester for correct spelling across files.
• Fixed method name textchange to textChange in ChatComponent.svelte for better readability.
• Updated CSS keyframe animation name from animloader to animation-loader in styles.css for clarity.

[eatgrass]

Thanks!