AIchat v1.2 little fixes

[x] Create API/AIResponseProcessor.cs
[x] Refactor GemmaClient.cs, OllamaClient.cs, GeminiClient.cs to use the shared processor
[x] Fix "standA" bug in CommandExecutor.cs
[x] Rebalance Sentiment rage math in SentimentAnalyzer.cs
[x] Implement Harmony hook for SetTactilTo in HarmonyPatches.cs