feat(ratio-setting): add compatibility for gemma-4 model suffix handling

[sxjeru]

根据 AIS 和相关文档，Gemma 4 已支持通过 thinkingLevel 控制思考开关。

即使 newapi 支持 gemma-4-26b-a4b-it-minimal 。

Summary by CodeRabbit

Release Notes

• New Features
  • Added support for Gemma-4 model variants with configuration suffixes, enabling proper normalization and compatibility within the system.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

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Run ID: b1a6d7fe-c755-447b-8748-70618199e786

📥 Commits

Reviewing files that changed from the base of the PR and between c9611c4 and e7f8d5d.

📒 Files selected for processing (1)

• setting/ratio_setting/model_ratio.go

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Walkthrough

The setting/ratio_setting/model_ratio.go file is enhanced to handle gemma-4 model name variants with reasoning effort suffixes. A new import for the reasoning package is added, and the FormatMatchingModelName function now trims effort-related suffixes from gemma-4 model names using the TrimEffortSuffix function.

Changes

Cohort / File(s)	Summary
Gemma-4 Reasoning Suffix Handling setting/ratio_setting/model_ratio.go	Added import of reasoning package and new conditional branch in FormatMatchingModelName to detect and trim effort/thinking suffixes (e.g., -minimal, -high) from gemma-4 prefixed model names, normalizing them to base model identifiers.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• fix: revert model ratio #2524: Directly modifies the same FormatMatchingModelName function but removes the reasoning suffix trimming for gemma-4, representing inverse changes to this PR.
• feat: sync gpt-5 model ratio and support new reasoning effort #1525: Adds related reasoning-effort suffix normalization logic, though applied in the OpenAI adapter rather than the model ratio setting.

Suggested reviewers

• seefs001

Poem

🐰 With whiskers twitching, through suffixes we hop,
Gemma-4 efforts trimmed in a single swift chop,
No -minimal fuzz, no -high extra weight,
Just base model names, normalized and great! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding support for gemma-4 model variants with effort/thinking suffixes through suffix handling logic.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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[Copilot]

Pull request overview

This PR extends the model-name normalization logic used by ratio/price lookups to handle Gemma 4 “reasoning effort” suffixes (e.g., -minimal, -high) by trimming them to the base model name, improving compatibility with upstream model naming variants.

Changes:

• Add setting/reasoning dependency to reuse the shared effort-suffix parsing logic.
• Update FormatMatchingModelName to trim Gemma 4 effort suffixes (via reasoning.TrimEffortSuffix) so ratio matching uses the base model name.

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