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## Why Code mode can use nested unified exec calls as data sources. When those calls omit `max_output_tokens`, code mode should receive raw command output so the script can parse or summarize it itself. When code mode does provide `max_output_tokens`, that explicit nested budget should be respected, including values above the default unified exec limit, rather than being capped before code mode sees the result. ## What - Preserve direct unified exec truncation behavior, while letting code-mode exec/write_stdin keep `max_output_tokens` as `None` unless explicitly supplied. - Make code-mode tool results use raw output when no explicit limit is present, and use the explicit nested limit directly when one is specified. - Refactor unified exec output formatting so `truncated_output` takes the caller-selected token budget. - Add e2e integration coverage for explicit nested exec limits, omitted nested exec limits, outer exec limit propagation, omitted-limit outputs that exceed both the default and a small truncation policy, explicit nested limits above those caps, and high explicit limits that still compact larger command output. - Reuse the code-mode turn setup helper while directly asserting the exact exec output item in each test. ## Testing - `just fmt` - `git diff --check` - Not run locally per repo guidance; CI should validate the e2e integration tests.