Move the model→endpoint→auth-env mapping out of hardcoded constants
in adapter.py + entrypoint.sh into a single `providers:` list at the
top of config.yaml. The adapter loads it at boot via _load_providers;
canvas Config tab will read the same YAML for its Provider dropdown so
UI and adapter never disagree on what's available. Adding a new
provider becomes a one-line YAML edit — no Python or shell changes.
Includes 5 third-party providers ready out of the box (Anthropic-compat
endpoints, Bearer-style ANTHROPIC_AUTH_TOKEN OR ANTHROPIC_API_KEY auth):
xiaomi-mimo https://api.xiaomimimo.com/anthropic
minimax https://api.minimax.io/anthropic
zai https://api.z.ai/api/anthropic (NEW)
moonshot https://api.moonshot.ai/anthropic (NEW)
deepseek https://api.deepseek.com/anthropic (NEW)
Plus 7 new model entries in runtime_config.models (mimo-v2.5, MiniMax-M2,
MiniMax-M2.7, GLM-4.6, GLM-4.5, kimi-k2.5, kimi-k2, deepseek-v4-pro,
deepseek-v4-flash) so they show up in the Canvas Config dropdown.
Operator override unchanged: ANTHROPIC_BASE_URL set as a workspace
secret still wins over the registry default — the escape hatch for
regional endpoints (Xiaomi token-plan-sgp, MiniMax api.minimaxi.com).
entrypoint.sh: drops the `mimo-*` case mapping (adapter handles routing
now). _BUILTIN_PROVIDERS retained as malformed-YAML fallback so a
bare-bones workspace still boots with oauth + anthropic-api defaults.
Tests: 25 passing. New coverage:
- YAML parses + normalizes to expected shape
- Malformed YAML falls back to builtins (warning, not raise)
- Each new provider routes its model id to the right base_url
- ANTHROPIC_AUTH_TOKEN alone satisfies third-party auth check
- Operator-set ANTHROPIC_BASE_URL overrides registry default
- Case-insensitive prefix match (MiniMax-M2 / minimax-m2.7 / GLM-4.6)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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