Add ladder configurations - #112
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Add codeclash/agents/mini_anthropic_model.py: a mini-swe-agent model class that drives Claude through a custom Anthropic-compatible base URL using the native Anthropic API (so prompt caching is preserved) with explicit per-token cost tracking. The API key, base URL, and model name are read from the environment (api_key_env / base_url_env / model_name_env) so no endpoint-specific values live in committed configs. Add the optional 'anthropic' dep as a [llama] extra (locked in uv.lock), document LLAMA_* env vars in .env.example, and add ready-to-run ladder configs (RobotRumble + a cheap BattleSnake smoke) whose climbing player uses the endpoint.
- codeclash/agents/mini_anthropic_model.py: mini-swe-agent model class driving Claude through a
custom Anthropic-compatible base URL (native Anthropic API, so prompt caching is preserved)
with explicit per-token cost tracking. API key via api_key_env; base URL / model optionally
from env (base_url_env / model_name_env).
- pyproject.toml: optional 'anthropic' dep as a [llama] extra (locked in uv.lock).
- configs/mini/models/llama_*.yaml: reusable model blocks for the 5 gateway models
(Opus 4.8, Opus 4.7, Sonnet 5 via AnthropicModel; Gemini 3.5 Flash via litellm OpenAI-compat;
GPT-5.5 via litellm Responses API).
- configs/ablations/ladder/rungs/{robotrumble,corewar}.yaml: rung lists factored out for reuse.
- configs/ablations/ladder/{robotrumble,corewar}__<model>.yaml: 10 ready-to-run ladder configs,
one per (game, model) pair — 'uv run codeclash ladder run <config>'.
- configs/ablations/ladder/battlesnake_llama_smoke.yaml: cheap wiring smoke (Opus 4.8).
- .env.example documents the LLAMA_* vars. Only LLAMA_API_KEY is required at runtime; model
names + endpoints are verbatim in the configs.
…nto john/ladder-run
- Claude gateway models (Opus 4.8/4.7, Sonnet 5) run with extended thinking enabled, which requires temperature unset (or 1.0). The model blocks set temperature: 0.2, causing every request to fail with HTTP 400. Remove model_kwargs/temperature and raise max_tokens 4096 -> 16384. Verified against the anthropic-passthrough endpoint with the full agent request shape (system + tools + cache_control): now returns 200 / tool_use. - Register litellm prices for gemini-3-5-flash-fair and gpt-5-5-genai-responses (from reveng's model_prices.json) so their cost is tracked instead of ignored. Claude self-computes cost from its cost: block (verified against reveng: opus/sonnet numbers match). - Remove robotrumble_llama.yaml (stale env-indirection config reintroduced by a merge).
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Add model specific configuration files for BattleSnake / Core War / RobotRumble runs