1.25.1

• 2a87d56: tests: expand unit tests for token accumulation logic (Issue #1313)

Added comprehensive unit tests for the token accumulation fix (Issue #1250)
that resolved the "Token usage: 0 input, 0 output" bug reported in Issue #1313.

New test coverage includes:

• End-to-end token display pipeline (accumulation → display format)
• Large token count handling (millions of tokens across many steps)
• NDJSON boundary cases (CRLF line endings, arrays, extra fields)
• Accumulator state isolation (independent accumulators)
• Exact reproduction of the Issue #1313 bug scenario
• Demonstration of why the streaming fix was necessary (concatenated JSON)

Total: 44 tests covering both parseAgentTokenUsage and streaming accumulation.

Related Pull Request: #1316

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