Move the soft/mixed gate-metric configuration introduced in PR #25 out of
the base default config and into a standalone example config so that
default SkillOpt runs (and paper reproduction) remain bit-for-bit on the
original hard gate.
- configs/_base_/default.yaml: drop gate_metric / gate_mixed_weight keys.
The trainer's cfg.get("gate_metric", "hard") fallback preserves the
original behavior unchanged.
- configs/examples/soft_gate.yaml: new standalone reference config with
a header explaining when to consider it (small selection split with
continuous rewards) and when not to (paper reproduction, large or
binary-reward settings).
- README.md: add a short "Community-contributed configs" section that
clearly flags this as user-contributed and non-default.
The yaml default `azure_openai_auth_mode: azure_cli` was silently
overwriting `AZURE_OPENAI_AUTH_MODE` exported by the user, because
`configure_clients()` treats any non-empty config value as an explicit
override. Switching the three auth_mode defaults (shared / optimizer /
target) to "" lets `_clean()` drop them and restores the intended
fallback chain: yaml → env var → module default ("azure_cli").
Also update README and .env.example to document the openai_compatible
mode introduced in d5c5b61, and remove the misleading `OPENAI_API_KEY`
snippet — SkillOpt reuses the `AZURE_OPENAI_*` env vars in this mode.
- Skill optimization framework with training loop analogy
- 11 benchmarks, 4 model backends (Azure OpenAI, Claude, Codex, Qwen)
- WebUI for browser-based training control
- Pluggable architecture for extending benchmarks and backends
