Skip token count request for DeepSeek Flash

[jahooma]

Summary

Skip the remote token-count API call for the base2 DeepSeek Flash freebuff root agent and use the existing local approximation instead. The bypass is scoped to the Codebuff-owned base2-free-deepseek-flash agent with the DeepSeek V4 Flash model, leaving other token-count paths unchanged. This reduces bandwidth and avoids unnecessary Anthropic token-count requests for high-volume freebuff traffic.

Checks

• bun test common/src/tests/free-agents.test.ts
• bun test web/src/app/api/v1/token-count/tests/token-count.test.ts
• bun run --cwd packages/agent-runtime typecheck
• bun run --cwd web typecheck
• bun run --cwd common typecheck
• git diff --check