fix(deps): lower openai-harmony floor to >=0.0.4 for SGLang compatibility

[hallerite]

Why

Every SGLang release through the current 0.5.12.post1 hard-pins openai-harmony==0.0.4 (unconditionally, as a direct dependency). renderers' previous openai-harmony>=0.0.8 floor therefore made renderers and sglang mutually uninstallable in one environment:

Because sglang==0.5.10.post1 depends on openai-harmony==0.0.4 and you require
sglang==0.5.10.post1, we can conclude that you require openai-harmony==0.0.4.
And because renderers depends on openai-harmony>=0.0.8, your requirements are unsatisfiable.

This broke the SGLang examples (their inline deps were never satisfiable with renderers>=0.1.6) and blocks any downstream driving gpt-oss through SGLang.

Why it's safe

The >=0.0.8 floor was set in the initial commit with no stated rationale, and GptOssRenderer only uses long-standing harmony APIs. Verified the older harmony is equivalent for our use:

• Byte-identical render — a tool-using gpt-oss conversation renders to the exact same 149 token ids (and stop ids) on harmony 0.0.4 vs 0.0.8.
• Parity suite passes — tests/test_gpt_oss_harmony_parity.py is 7/7 green under 0.0.4.
• Resolves + installs — uv pip install <renderers> sglang==0.5.10.post1 flash-attn-4 now resolves (177 packages) and installs openai-harmony==0.0.4 alongside renderers.

harmony's published versions are 0.0.1–0.0.4, 0.0.6, 0.0.8, so >=0.0.4 still admits the newest.

Change

One line in pyproject.toml: openai-harmony>=0.0.8 → openai-harmony>=0.0.4, with a comment explaining the SGLang constraint.

🤖 Generated with Claude Code

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Note

Low Risk
Packaging-only constraint change with documented parity coverage; no runtime logic changes in this diff.

Overview
Lowers the openai-harmony dependency floor from >=0.0.8 to >=0.0.4 so renderers can install in the same environment as SGLang (which pins openai-harmony==0.0.4).

pyproject.toml adds a comment documenting that constraint and that GptOssRenderer / harmony parity tests are validated on 0.0.4 as well as newer releases.

^{Reviewed by Cursor Bugbot for commit 1b183b3. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Lower openai-harmony minimum version to >=0.0.4 for SGLang compatibility

Relaxes the openai-harmony floor in pyproject.toml from >=0.0.8 to >=0.0.4 so the dependency resolver can select versions compatible with SGLang. Comments are added to document the rationale and parity verification notes.

^{Macroscope summarized 1b183b3.}

[macroscopeapp]

Approvability

Verdict: Approved

This PR lowers a dependency version floor for compatibility with SGLang, with no runtime behavior changes. The change is well-documented and the author is the primary maintainer of the affected file.

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