no models in custom provider

[11111000000]

Describe the bug

ECA 0.123.2 reads a custom provider from =config.json= correctly, but the provider is not registered as an available runtime model. As a result:

• =/config= shows the provider and =defaultModel= correctly
• =/providers-list= shows the provider as configured, but with =0 models=
• =/doctor= shows empty =Default model:=
• chat requests can fail with:
  #+begin_src text :results output
  API url not found.
  Make sure you have provider '' configured properly.
  #+end_src

This seems to affect custom OpenAI-compatible providers configured with =api: "openai-chat"= and explicit static models in config.

To Reproduce

1. Create =~/.config/eca/config.json= with a custom provider, for example:
   #+begin_src json :results output
   {
   "$schema": "https://eca.dev/config.json",
   "defaultModel": "aitunnel/qwen3.5-397b-a17b",
   "providers": {
   "aitunnel": {
   "api": "openai-chat",
   "url": "https://api.aitunnel.ru/v1",
   "key": "REDACTED",
   "fetchModels": false,
   "models": {
   "qwen3.5-397b-a17b": {}
   }
   }
   }
   }
   #+end_src
2. Start ECA server.
3. Open chat and run =/config=.
4. Run =/providers-list= and =/doctor=.
5. Send a normal chat message.

Expected behavior

If a custom provider is present in =/config= and has explicit static models in =providers..models=, ECA should register those models as available runtime models even when =fetchModels=false=.

Expected result:

• =/providers-list= should show at least 1 model for the custom provider
• =/doctor= should show a non-empty =Default model:=
• chat should use =aitunnel/qwen3.5-397b-a17b= successfully

Actual behavior

• =/config= shows the merged config correctly, including:
  • =defaultModel "aitunnel/qwen3.5-397b-a17b"=
  • the custom provider
  • =fetchModels false=
  • the static =models= entry
• =/providers-list= shows:
  #+begin_src text :results output
  aitunnel ✓ configured
  API Key · (config) · active
  api: openai-chat
  url: https://api.aitunnel.ru/v1
  fetchModels: false
  0 models
  #+end_src
• =/doctor= shows:
  #+begin_src text :results output
  Default model:

Logged providers:
openai: Unknown
#+end_src

• sending a chat message can fail with:
  #+begin_src text :results output
  API url not found.
  Make sure you have provider '' configured properly.
  #+end_src

Doctor

#+begin_src text :results output
ECA version: 0.123.2

Server cmd: /home/zoya/.emacs.d/eca/eca server

Workspaces: /home/zoya/.config/eca

Default model:

Logged providers:
openai: Unknown
#+end_src

Additional context

From source inspection, this looks like a runtime model registration / initialization issue rather than a config parsing issue:

• =/config= proves the config is loaded correctly
• custom providers with =api "openai-chat"= appear to be supported by runtime dispatch
• the failure seems to happen because the custom model does not end up in =db[:models]=
• chat/model selection then has no valid runtime model to use
• there may also be an initialization race, because model sync is started asynchronously during startup

Relevant symptoms are consistent with:

• static models from custom providers not being surfaced into available models
• or chat starting before model sync completes
• or both

[ericdallo]

@11111000000 there is no /providers-list command in ECA, only the providers page via eca-providers for emacs.
I can't repro that, if I configure:

{
  "providers": {
        "aitunnel": {
            "api": "openai-chat",
            "url": "https://api.aitunnel.ru/v1",
            "key": "REDACTED",
            "fetchModels": false,
            "models": {"qwen3.5-397b-a17b": {}}
        }

  }
}

I do get the model after eca initialize, and if I send a message I get a error because of the token, but everything is expected: