feat: provider modules — ProviderProfile ABC, 30 providers, fetch_models, transport single-path

feat: provider modules — ProviderProfile ABC, 29 providers, fetch_models, transport single-path

Introduces providers/ as the single source of truth for every inference
provider. All 29 providers declared with correct data cross-checked against
auth.py, runtime_provider.py and auxiliary_client.py.

Rebased onto main (30307a980). Incorporates post-salvage fixes from
56724147e (gmi aux model google/gemini-3.1-flash-lite-preview, already set in providers/gmi.py).

hermes_cli/main.py

@@ -1528,6 +1528,21 @@ def cmd_model(args):
     select_provider_and_model(args=args)
 
 
+def _is_profile_api_key_provider(provider_id: str) -> bool:
+    """Return True when provider_id maps to a profile with auth_type='api_key'.
+
+    Used as a catch-all in select_provider_and_model() so that new providers
+    declared in providers/*.py automatically dispatch to _model_flow_api_key_provider
+    without requiring an explicit elif branch here.
+    """
+    try:
+        from providers import get_provider_profile
+        _p = get_provider_profile(provider_id)
+        return _p is not None and _p.auth_type == "api_key"
+    except Exception:
+        return False
+
+
 def select_provider_and_model(args=None):
     """Core provider selection + model picking logic.
 
@@ -1820,7 +1835,7 @@ def select_provider_and_model(args=None):
         "gmi",
         "nvidia",
         "ollama-cloud",
-    ):
+    ) or _is_profile_api_key_provider(selected_provider):
         _model_flow_api_key_provider(config, selected_provider, current_model)
 
     # ── Post-switch cleanup: clear stale OPENAI_BASE_URL ──────────────
@@ -7618,6 +7633,22 @@ def cmd_logs(args):
     )
 
 
+def _build_provider_choices() -> list[str]:
+    """Build the --provider choices list from CANONICAL_PROVIDERS + 'auto'."""
+    try:
+        from hermes_cli.models import CANONICAL_PROVIDERS as _cp
+        return ["auto"] + [p.slug for p in _cp]
+    except Exception:
+        # Fallback: static list guarantees the CLI always works
+        return [
+            "auto", "openrouter", "nous", "openai-codex", "copilot-acp", "copilot",
+            "anthropic", "gemini", "google-gemini-cli", "xai", "bedrock", "azure-foundry",
+            "ollama-cloud", "huggingface", "zai", "kimi-coding", "kimi-coding-cn",
+            "stepfun", "minimax", "minimax-cn", "kilocode", "xiaomi", "arcee",
+            "nvidia", "deepseek", "alibaba", "qwen-oauth", "opencode-zen", "opencode-go",
+        ]
+
+
 def main():
     """Main entry point for hermes CLI."""
     parser = argparse.ArgumentParser(
@@ -7811,30 +7842,7 @@ For more help on a command:
     )
     chat_parser.add_argument(
         "--provider",
-        choices=[
-            "auto",
-            "openrouter",
-            "nous",
-            "openai-codex",
-            "copilot-acp",
-            "copilot",
-            "anthropic",
-            "gemini",
-            "xai",
-            "ollama-cloud",
-            "huggingface",
-            "zai",
-            "kimi-coding",
-            "kimi-coding-cn",
-            "stepfun",
-            "minimax",
-            "minimax-cn",
-            "kilocode",
-            "xiaomi",
-            "arcee",
-            "gmi",
-            "nvidia",
-        ],
+        choices=_build_provider_choices(),
         default=None,
         help="Inference provider (default: auto)",
     )