Add all soci-agent model variants to LLM selector

HF and Ollama entries for all fine-tuned sizes:
- soci-agent-7b (Qwen2.5 7B) — default
- soci-agent-8b (Llama 3.1 8B)
- soci-agent-3b (Qwen2.5 3B)
- soci-agent-1b5 (Qwen2.5 1.5B)
- soci-agent-q4 (Qwen2.5 0.5B)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/soci/api/routes.py

@@ -286,12 +286,20 @@ async def get_llm_providers():
         or os.environ.get("HF_API_TOKEN")
     )
     if has_hf:
-        providers.append({"id": "hf", "model": "RayMelius/soci-agent-7b",                "label": "Soci Agent (fine-tuned)", "icon": "🏙"})
+        providers.append({"id": "hf", "model": "RayMelius/soci-agent-7b",                "label": "Soci Agent 7B (Qwen)",    "icon": "🏙"})
+        providers.append({"id": "hf", "model": "RayMelius/soci-agent-8b",                "label": "Soci Agent 8B (Llama)",   "icon": "🏙"})
+        providers.append({"id": "hf", "model": "RayMelius/soci-agent-3b",                "label": "Soci Agent 3B",           "icon": "🏙"})
+        providers.append({"id": "hf", "model": "RayMelius/soci-agent-1b5",               "label": "Soci Agent 1.5B",         "icon": "🏙"})
+        providers.append({"id": "hf", "model": "RayMelius/soci-agent-q4",                "label": "Soci Agent 0.5B",         "icon": "🏙"})
         providers.append({"id": "hf", "model": "HuggingFaceH4/zephyr-7b-beta",           "label": "HF Zephyr 7B",    "icon": "🤗"})
         providers.append({"id": "hf", "model": "Qwen/Qwen2.5-7B-Instruct",               "label": "HF Qwen 2.5 7B",  "icon": "🤗"})
         providers.append({"id": "hf", "model": "meta-llama/Llama-3.2-3B-Instruct",       "label": "HF Llama 3.2 3B", "icon": "🤗"})
         providers.append({"id": "hf", "model": "mistralai/Mistral-7B-Instruct-v0.3",     "label": "HF Mistral 7B",   "icon": "🤗"})
-    providers.append({"id": "ollama", "label": "Soci Agent (Ollama)",      "icon": "🏙", "model": "soci-agent-7b"})
+    providers.append({"id": "ollama", "label": "Soci Agent 7B (Ollama)",   "icon": "🏙", "model": "soci-agent-7b"})
+    providers.append({"id": "ollama", "label": "Soci Agent 8B (Ollama)",   "icon": "🏙", "model": "soci-agent-8b"})
+    providers.append({"id": "ollama", "label": "Soci Agent 3B (Ollama)",   "icon": "🏙", "model": "soci-agent-3b"})
+    providers.append({"id": "ollama", "label": "Soci Agent 1.5B (Ollama)", "icon": "🏙", "model": "soci-agent-1b5"})
+    providers.append({"id": "ollama", "label": "Soci Agent 0.5B (Ollama)", "icon": "🏙", "model": "soci-agent-q4"})
     providers.append({"id": "ollama", "label": "Ollama (local)",           "icon": "🦙", "model": ""})
     return {"current": current, "current_model": current_model, "providers": providers}