feat: reduce Gemini 2.5 Pro thinking tokens default from 1024 to 128

- Changed minimum thinking tokens slider from 1024 to 128 in ThinkingBudget component
- Changed default thinking tokens from 8192 to 128 in api constants
- Adjusted slider step size from 1024 to 128 for finer control

This change applies to all providers with thinking token settings defaulting to 1024

Author: roomote

src/shared/api.ts

@@ -50,7 +50,7 @@ export const shouldUseReasoningEffort = ({
 }): boolean => (!!model.supportsReasoningEffort && !!settings?.reasoningEffort) || !!model.reasoningEffort
 
 export const DEFAULT_HYBRID_REASONING_MODEL_MAX_TOKENS = 16_384
-export const DEFAULT_HYBRID_REASONING_MODEL_THINKING_TOKENS = 8_192
+export const DEFAULT_HYBRID_REASONING_MODEL_THINKING_TOKENS = 128
 
 // Max Tokens
 

webview-ui/src/components/settings/ThinkingBudget.tsx

@@ -81,9 +81,9 @@ export const ThinkingBudget = ({ apiConfiguration, setApiConfigurationField, mod
 						<div className="font-medium">{t("settings:thinkingBudget.maxThinkingTokens")}</div>
 						<div className="flex items-center gap-1" data-testid="reasoning-budget">
 							<Slider
-								min={1024}
+								min={128}
 								max={modelMaxThinkingTokens}
-								step={1024}
+								step={128}
 								value={[customMaxThinkingTokens]}
 								onValueChange={([value]) => setApiConfigurationField("modelMaxThinkingTokens", value)}
 							/>