feat: add Nous Portal (Nous Research) native provider#794
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- Add NousSettings (base-url / api-key override) to fast-agent config
- Register NousLLM (OpenAICompatibleLLM) in model_factory
- Add Nous Portal models to model_database:
hermes-3-405b, hermes-3-70b, hermes-2-405b, hermes-2-70b, epistem-7b-hermes-2-beta, stepfun/step-3.5-flash
- Port product-attribution tags and base URL from Hermes Nous Portal plugin
- Fixes: stepfun/step-3.5-flash via Nous Portal is now a first-class model
- Insert Provider.NOUS after Provider.ALIYUN in PICKER_PROVIDER_ORDER - Add stepfun/step-3.5-flash as sole CATALOG_ENTRIES_BY_PROVIDER entry for NOUS - Without these, model_picker_common.build_snapshot() skipped NOUS entirely
Hermes uses https://inference-api.nousresearch.com/v1 (with -api), which is not blocked from this IP range. The bare inference.nousresearch.com drops TLS client hello (SSL_ERROR_SYSCALL). Also updates docstring to match.
Matches Hermes Agent's curated model list from inference-api.nousresearch.com.
All models use the nous.{model_id} spec format; parse_model_string strips
the nous. prefix for the API call.
Models: opus47, opus46, sonnet46, kimi26, qwen36p, haiku45, gpt55,
gpt55pro, gpt54mini, gpt54nano, gpt53codex, mimo25pro, hy3, gem3pro,
gem3flash, gem31pro, gem31fl, qwen36b, step35, minimax27, glm51,
grok43, nemotron3, dsv4pro
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Aliases like opus47, sonnet46, gpt55 already exist in MODEL_PRESETS pointing to native providers. Adding a prefix avoids the assertion failure in test_curated_catalog_aliases_are_parseable.
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Adds a first-class Nous Research Portal provider for fast-agent, ported from the Hermes Nous Portal provider (`/hermes-agent/plugins/model-providers/nous/`).
What it does
Usage: `fast-agent --model nous.hermes-3-405b`
Auth: `NOUS_API_KEY` or `nous.api_key` in config