feat(models): update Gemini model context windows and output limits

Author: CleoMenezesJr

src/utils/model/openaiContextWindows.ts

@@ -123,9 +123,11 @@ const OPENAI_CONTEXT_WINDOWS: Record<string, number> = {
   'google/gemini-2.5-pro':  1_048_576,
 
   // Google (native via CLAUDE_CODE_USE_GEMINI)
-  'gemini-2.0-flash':       1_048_576,
-  'gemini-2.5-pro':         1_048_576,
-  'gemini-2.5-flash':       1_048_576,
+  'gemini-2.0-flash':        1_048_576,
+  'gemini-2.5-flash':        1_048_576,
+  'gemini-2.5-pro':          1_048_576,
+  'gemini-3-flash':          1_048_576,
+  'gemini-3.1-pro':          1_048_576,
 
   // Ollama local models
   // Llama 3.1+ models support 128k context natively (Meta official specs).
@@ -253,8 +255,10 @@ const OPENAI_MAX_OUTPUT_TOKENS: Record<string, number> = {
 
   // Google (native via CLAUDE_CODE_USE_GEMINI)
   'gemini-2.0-flash':          8_192,
-  'gemini-2.5-pro':           65_536,
   'gemini-2.5-flash':         65_536,
+  'gemini-2.5-pro':           65_536,
+  'gemini-3-flash':           65_536,
+  'gemini-3.1-pro':           65_536,
 
   // Ollama local models (conservative safe defaults)
   'llama3.3:70b':               4_096,