refactor(responses): remove compact model suffix handling

[seefs001]

⚠️ 提交说明 / PR Notice

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移除之前由于很多供应商不支持/v1/responses/compact而为模型列表加入的特殊模型名兼容逻辑。
本PR合并后，/v1/responses/compact将直接转发给 openai/azure/newapi/sub2api/codex 上游，计费按照请求模型计费，与/v1/responses一致，之前的 openai-compact模型后缀模型成为无效模型名，不会在内部进行处理。

🚀 变更类型 / Type of change

• 🐛 Bug 修复 (Bug fix) - 请关联对应 Issue，避免将设计取舍、理解偏差或预期不一致直接归类为 bug
• ✨ 新功能 (New feature) - 重大特性建议先通过 Issue 沟通
• ⚡ 性能优化 / 重构 (Refactor)
• 📝 文档更新 (Documentation)

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Summary by CodeRabbit

• New Features

  • Improved compact Responses compatibility by considering both channel and API type.
  • Added support for compact Responses validation across additional channel configurations.

• Changes

  • Stopped automatically modifying model names for compact Responses requests.
  • Model listings now show the models provided by the upstream service, including automatic review models.
  • Model mapping and pricing now use standard model names and fallback behavior.

[coderabbitai]

Walkthrough

The PR makes Responses Compact support channel-aware and removes automatic compact model suffix generation. Endpoint handling, Codex model discovery, model mapping, and ratio lookups now use standard model names.

Changes

Responses Compact behavior

Layer / File(s)	Summary
Channel-aware compact support common/api_type.go, controller/channel-test.go, controller/channel_test_internal_test.go, relay/responses_handler.go	SupportsResponsesCompact now receives channel and API types. Validation and tests use both values.
Compact endpoint request flow controller/channel-test.go, middleware/distributor.go	Endpoint detection and distribution no longer select /v1/responses/compact or append compact model suffixes.
Model discovery and mapping relay/channel/codex/constants.go, service/codex_channel_models.go, relay/helper/model_mapped.go, setting/ratio_setting/model_ratio.go	Codex models and mapped models retain upstream names. Compact variants and wildcard ratio or price fallbacks are removed.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related PRs

• QuantumNous/new-api#6462: Both changes modify compact Responses validation in relay/responses_handler.go.

Suggested reviewers: calcium-ion

Poem

I’m a rabbit with a model-name chart,
Compact suffixes now depart.
Channels guide the support call,
Upstream names stay plain and tall.
Tests hop through each API lane.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: removing compact model suffix handling from Responses processing.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@common/api_type.go`:
- Line 91: Update SupportsResponsesCompact in common/api_type.go (line 91) to
return true only for explicitly supported channelType/apiType pairs, using both
parameters in the gate. Add mismatched channel/API cases expecting false in
controller/channel_test_internal_test.go (lines 105-111), while retaining the
existing valid positive cases.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: f733d5f3-0407-498b-b02b-6d0e28133918

📥 Commits

Reviewing files that changed from the base of the PR and between 9c97e78 and 186add1.

📒 Files selected for processing (10)

• common/api_type.go
• controller/channel-test.go
• controller/channel_test_internal_test.go
• middleware/distributor.go
• relay/channel/codex/constants.go
• relay/helper/model_mapped.go
• relay/responses_handler.go
• service/codex_channel_models.go
• setting/ratio_setting/compact_suffix.go
• setting/ratio_setting/model_ratio.go

💤 Files with no reviewable changes (3)

• middleware/distributor.go
• setting/ratio_setting/model_ratio.go
• setting/ratio_setting/compact_suffix.go

[coderabbitai]

🎯 Functional Correctness | 🟠 Major | ⚡ Quick win

Enforce the channel/API pair in SupportsResponsesCompact.

channelType is unused. Any supported apiType returns true, including unsupported channel/API combinations. This makes the channel-aware compact gate ineffective.

• common/api_type.go#L91-L91: return true only for each supported channel/API pair.
• controller/channel_test_internal_test.go#L105-L111: add mismatched channel/API cases that expect false. The current positive cases also pass with API-type-only logic.

📍 Affects 2 files

• common/api_type.go#L91-L91 (this comment)
• controller/channel_test_internal_test.go#L105-L111

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@common/api_type.go` at line 91, Update SupportsResponsesCompact in
common/api_type.go (line 91) to return true only for explicitly supported
channelType/apiType pairs, using both parameters in the gate. Add mismatched
channel/API cases expecting false in controller/channel_test_internal_test.go
(lines 105-111), while retaining the existing valid positive cases.