debug: expose full inputs/outputs in Recalculer response for diagnosis

_run_auto_analysis now returns a rich dict {ok, inputs, node_values, actual_moves, error}
instead of bool. The refresh endpoint captures and forwards:
- inputs: what values were fed to evaluate_graph
- node_keys: which nodes were computed in prediction
- actual_moves: actual price pips fetched
- run_error: exception message if it failed

Frontend shows all of this after clicking Recalculer so the root cause is visible.

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

frontend/src/pages/InstrumentDashboard.tsx

@@ -1152,13 +1152,16 @@ function ExplanationScore({
                 : <span>Refresh: {debugInfo.refreshed} ok / {debugInfo.failed} err / {debugInfo.total} total</span>
               }
               {debugInfo.details?.map((d: any, i: number) => (
-                <div key={i} className="mt-0.5">
-                  #{d.event_id} {(d.event_name ?? '').slice(0, 22)} → <span className={d.result === 'ok' ? 'text-emerald-600' : 'text-red-500'}>{d.result}</span>
-                  {d.surprise_pct != null
-                    ? <span className="text-cyan-700 ml-1">surp:{Number(d.surprise_pct).toFixed(1)}%</span>
-                    : d.actual_value != null
-                    ? <span className="text-amber-700 ml-1">act:{d.actual_value} exp:{d.expected_value ?? '?'}</span>
-                    : <span className="text-red-800 ml-1">surp=null</span>}
+                <div key={i} className="mt-1 border-t border-slate-800/40 pt-1">
+                  <span className={d.result === 'ok' ? 'text-emerald-500' : 'text-red-500'}>{d.result}</span>
+                  <span className="text-slate-500 ml-1">#{d.event_id} {(d.event_name ?? '').slice(0, 20)}</span>
+                  {d.run_error && <span className="text-red-400 ml-1">err:{d.run_error.slice(0, 40)}</span>}
+                  <div className="ml-2 text-slate-600">
+                    surp:{d.surprise_pct != null ? Number(d.surprise_pct).toFixed(1)+'%' : `null (act=${d.actual_value} exp=${d.expected_value})`}
+                    {' | '}inputs:{JSON.stringify(d.inputs ?? {})}
+                    {' | '}pred_keys:[{(d.node_keys ?? []).join(',')}]
+                    {' | '}actual:{JSON.stringify(d.actual_moves ?? {})}
+                  </div>
                 </div>
               ))}
             </div>