refactor: consolidate hypotheses, agent_signals, and process_logs into action-based smart tools

server/src/embedding.rs

@@ -14,6 +14,9 @@ struct CandleEmbeddingModel {
 
 impl CandleEmbeddingModel {
     fn new() -> Result<Self, String> {
+        if cfg!(test) || std::env::var("MCP_OFFLINE_EMBEDDINGS").is_ok() {
+            return Err("Offline embedding mode active (tests/offline flag)".to_string());
+        }
         let client = hf_hub::HFClientSync::new().map_err(|e| e.to_string())?;
         let repo = client.model("sentence-transformers", "all-MiniLM-L6-v2");