fix: LLM analysis + new run button + settings page support

- Fixed LLM failing silently (401 auth error on every iteration)
- Reset provider to Ollama (working) from broken OpenRouter config
- Added /api/clear endpoint + 'New Run' button to reset history
- LLM failures now logged visibly with error details
- LLM suggestions persisted to iteration data (survive restarts)
- Settings page support via llm_settings.json (multi-provider)

orchestrator.py

@@ -461,9 +461,22 @@ def run_optimization_loop(callback=None, config_override=None):
                         "iteration": iteration,
                         "reasoning": reasoning,
                     })
+                # Also persist LLM suggestion to iteration log
+                iter_data["llm_reasoning"] = reasoning
+                iter_data["llm_applied"] = True
                 config = new_config
-            except Exception:
-                import random
+            except Exception as e:
+                import random, traceback
+                err_msg = f"LLM call failed: {type(e).__name__}: {e}"
+                print(f"  WARNING: {err_msg}")
+                traceback.print_exc()
+                with _status_lock:
+                    _status["llm_suggestions"].append({
+                        "iteration": iteration,
+                        "reasoning": f"ERROR: {err_msg} — using random perturbation",
+                    })
+                iter_data["llm_reasoning"] = err_msg
+                iter_data["llm_applied"] = False
                 hp = config.get("hyperparameters", {})
                 hp["learning_rate"] = hp.get("learning_rate", 0.01) * random.uniform(0.8, 1.2)
                 hp["max_depth"] = max(3, min(10, hp.get("max_depth", 5) + random.choice([-1, 0, 1])))