feat(abacus): add 21 new provider model configurations

[sorenjuul]

This PR adds 21 new model configurations to the Abacus provider, covering recently released models from OpenAI, Google, Anthropic, DeepSeek, xAI, Moonshot AI, MiniMax, Qwen, Zhipu AI (zai-org), and Xiaomi (MiMo).

Models added

Model ID	Base model
MiniMaxAI/MiniMax-M2.7	minimax/MiniMax-M2.7
MiniMaxAI/MiniMax-M3	minimax/MiniMax-M3
Qwen/Qwen3.6-27B	alibaba/qwen3.6-27b
claude-opus-4-7	anthropic/claude-opus-4-7
claude-opus-4-8	anthropic/claude-opus-4-8
deepseek-ai/DeepSeek-V4-Flash	deepseek/deepseek-v4-flash
deepseek-ai/DeepSeek-V4-Pro	deepseek/deepseek-v4-pro
gemini-3.1-flash-lite	google/gemini-3.1-flash-lite
gemini-3.5-flash	google/gemini-3.5-flash
google/gemma-4-31b-it	google/gemma-4-31b-it
gpt-4o	openai/gpt-4o
gpt-5.4-mini	openai/gpt-5.4-mini
gpt-5.4-nano	openai/gpt-5.4-nano
gpt-5.5	openai/gpt-5.5
grok-4.20-beta-0309-non-reasoning	xai/grok-4.20-0309-non-reasoning
grok-4.3	xai/grok-4.3
mimo-v2-pro	xiaomi/mimo-v2-pro
moonshotai/Kimi-K2.6	moonshotai/kimi-k2.6
moonshotai/Kimi-K2.7-Code	moonshotai/kimi-k2.7-code
qwen3.6-plus	alibaba/qwen3.6-plus
zai-org/GLM-5.1	zhipuai/glm-5.1
zai-org/GLM-5.2	zhipuai/glm-5.2

Validation

All changes have been validated using the tooling documented in README.md:

• bun validate ✅ passes with no errors.
• bun run compare:migrations was run; it produced no diff because these are new provider model files rather than migrations of existing fields.
• cd packages/web && bun run build ✅ completes successfully.
• The generated packages/web/dist/_api.json was inspected locally and confirms the Abacus provider now contains the new models.
• The locally generated API file was tested locally with opencode and worked as expected.

All new files use existing base_model references and follow the provider TOML conventions used elsewhere in the repo.

[sorenjuul]

@rekram1-node would be nice to get this in - a lot of the new models are not available for Abacus users

[rekram1-node]

AUTOMATED REVIEW: Blocking merge: all inherited reasoning models need explicit provider-specific reasoning_options = [] because no Abacus caller controls were verified. Also remove the incorrect temperature = true overrides from Claude Opus 4.7 and 4.8.

[sorenjuul]

AUTOMATED REVIEW: Blocking merge: all inherited reasoning models need explicit provider-specific reasoning_options = [] because no Abacus caller controls were verified. Also remove the incorrect temperature = true overrides from Claude Opus 4.7 and 4.8.

@rekram1-node Should all be fixed now - thanks for the feedback

[sorenjuul]

@rekram1-node could we get this one in? It kind of sucks only being able to use the old models