fix(core): add deepseek-r1 to output token limit patterns

deepseek-r1 normalizes to `deepseek-r1` which does not match the
existing `^deepseek-reasoner` output pattern, causing it to fall
through to the 8K default. DeepSeek R1 supports 64K output tokens,
same as deepseek-reasoner. Without this fix, responses from
deepseek-r1 are silently truncated at 8K tokens.

Made-with: Cursor

Author: netbrah

packages/core/src/core/tokenLimits.test.ts

@@ -284,6 +284,8 @@ describe('tokenLimit with output type', () => {
   describe('other output limits', () => {
     it('should return correct output limits for DeepSeek', () => {
       expect(tokenLimit('deepseek-reasoner', 'output')).toBe(65536);
+      expect(tokenLimit('deepseek-r1', 'output')).toBe(65536);
+      expect(tokenLimit('deepseek-r1-0528', 'output')).toBe(65536);
       expect(tokenLimit('deepseek-chat', 'output')).toBe(8192);
     });
 

packages/core/src/core/tokenLimits.ts

@@ -169,6 +169,7 @@ const OUTPUT_PATTERNS: Array<[RegExp, TokenCount]> = [
 
   // DeepSeek
   [/^deepseek-reasoner/, LIMITS['64k']],
+  [/^deepseek-r1/, LIMITS['64k']],
   [/^deepseek-chat/, LIMITS['8k']],
 
   // Zhipu GLM