feat(route-optimizer): add configurable download and upload weights for bandwidth scoring in AI settings

backend/routes/routeOptimizerRoutes.js

@@ -15,6 +15,8 @@ const DEFAULT_AI_SETTINGS = {
   latencyWeight: 0.55,
   bandwidthWeight: 0.35,
   freshnessWeight: 0.1,
+  downloadWeight: 0.5,
+  uploadWeight: 0.5,
   combineHomeToJumphostWeight: 0.45,
   combineJumphostToExitWeight: 0.55,
   probabilityScale: 5,
@@ -47,6 +49,11 @@ function positiveNumber(v, fallback) {
   return Number.isFinite(n) && n > 0 ? n : fallback;
 }
 
+function nonNegativeNumber(v, fallback) {
+  const n = Number(v);
+  return Number.isFinite(n) && n >= 0 ? n : fallback;
+}
+
 function makeServerKey(server) {
   if (!server || typeof server !== 'object') return '';
   return String(server.id || server.dns || server.ip || '').trim();
@@ -97,10 +104,10 @@ function freshnessScore(cacheUpdatedAt, aiSettings) {
 }
 
 function bandwidthScore({ speedDownloadMbps, speedUploadMbps, aiSettings }) {
-  // DL/UL considered separately with equal 50/50 contribution.
+  // DL/UL considered separately with configurable weights.
   const dl = normalizeBandwidthValue(speedDownloadMbps, aiSettings);
   const ul = normalizeBandwidthValue(speedUploadMbps, aiSettings);
-  return clamp((dl + ul) / 2, 0, 1);
+  return clamp(dl * aiSettings.downloadWeight + ul * aiSettings.uploadWeight, 0, 1);
 }
 
 function buildSegmentScore({
@@ -252,6 +259,9 @@ async function loadAiSettings() {
     const bandwidthWeight = positiveNumber(src.bandwidthWeight, DEFAULT_AI_SETTINGS.bandwidthWeight);
     const freshnessWeight = positiveNumber(src.freshnessWeight, DEFAULT_AI_SETTINGS.freshnessWeight);
     const sum = latencyWeight + bandwidthWeight + freshnessWeight || 1;
+    const downloadWeight = nonNegativeNumber(src.downloadWeight, DEFAULT_AI_SETTINGS.downloadWeight);
+    const uploadWeight = nonNegativeNumber(src.uploadWeight, DEFAULT_AI_SETTINGS.uploadWeight);
+    const sumDu = downloadWeight + uploadWeight;
     const hjW = positiveNumber(
       src.combineHomeToJumphostWeight,
       DEFAULT_AI_SETTINGS.combineHomeToJumphostWeight
@@ -276,6 +286,8 @@ async function loadAiSettings() {
       latencyWeight: latencyWeight / sum,
       bandwidthWeight: bandwidthWeight / sum,
       freshnessWeight: freshnessWeight / sum,
+      downloadWeight: sumDu > 0 ? downloadWeight / sumDu : DEFAULT_AI_SETTINGS.downloadWeight,
+      uploadWeight: sumDu > 0 ? uploadWeight / sumDu : DEFAULT_AI_SETTINGS.uploadWeight,
       combineHomeToJumphostWeight: hjW / sum2,
       combineJumphostToExitWeight: jeW / sum2,
       probabilityScale: clamp(

frontend/src/SettingsPage.jsx

@@ -125,6 +125,8 @@ export default function SettingsPage() {
   const [aiLatencyWeight, setAiLatencyWeight] = useState('0.55');
   const [aiBandwidthWeight, setAiBandwidthWeight] = useState('0.35');
   const [aiFreshnessWeight, setAiFreshnessWeight] = useState('0.10');
+  const [aiDownloadWeight, setAiDownloadWeight] = useState('0.5');
+  const [aiUploadWeight, setAiUploadWeight] = useState('0.5');
   const [aiHomeToJhWeight, setAiHomeToJhWeight] = useState('0.45');
   const [aiJhToExitWeight, setAiJhToExitWeight] = useState('0.55');
   const [aiProbabilityScale, setAiProbabilityScale] = useState('5');
@@ -529,6 +531,12 @@ export default function SettingsPage() {
         setAiFreshnessWeight(
           ai?.freshnessWeight != null ? String(ai.freshnessWeight) : '0.10'
         );
+        setAiDownloadWeight(
+          ai?.downloadWeight != null ? String(ai.downloadWeight) : '0.5'
+        );
+        setAiUploadWeight(
+          ai?.uploadWeight != null ? String(ai.uploadWeight) : '0.5'
+        );
         setAiHomeToJhWeight(
           ai?.combineHomeToJumphostWeight != null
             ? String(ai.combineHomeToJumphostWeight)
@@ -773,6 +781,14 @@ export default function SettingsPage() {
           latencyWeight: Math.max(0, parseFloat(aiLatencyWeight) || 0.55),
           bandwidthWeight: Math.max(0, parseFloat(aiBandwidthWeight) || 0.35),
           freshnessWeight: Math.max(0, parseFloat(aiFreshnessWeight) || 0.1),
+          downloadWeight: Math.max(
+            0,
+            Number.isFinite(parseFloat(aiDownloadWeight)) ? parseFloat(aiDownloadWeight) : 0.5
+          ),
+          uploadWeight: Math.max(
+            0,
+            Number.isFinite(parseFloat(aiUploadWeight)) ? parseFloat(aiUploadWeight) : 0.5
+          ),
           combineHomeToJumphostWeight: Math.max(
             0,
             parseFloat(aiHomeToJhWeight) || 0.45
@@ -1585,6 +1601,34 @@ export default function SettingsPage() {
                     />
                   </div>
 
+                  <div className="col-12 mt-1"><h4 className="subheader">Баланс bandwidth (DL/UL)</h4></div>
+                  <div className="col-12 col-md-6">
+                    <FormField
+                      label="Вес Download (DL)"
+                      name="aiDownloadWeight"
+                      type="number"
+                      value={aiDownloadWeight}
+                      onChange={setAiDownloadWeight}
+                      helpText="Внутренний вес DL в bandwidth score сегмента."
+                      disabled={saving}
+                      min={0}
+                      step="0.01"
+                    />
+                  </div>
+                  <div className="col-12 col-md-6">
+                    <FormField
+                      label="Вес Upload (UL)"
+                      name="aiUploadWeight"
+                      type="number"
+                      value={aiUploadWeight}
+                      onChange={setAiUploadWeight}
+                      helpText="Внутренний вес UL в bandwidth score сегмента."
+                      disabled={saving}
+                      min={0}
+                      step="0.01"
+                    />
+                  </div>
+
                   <div className="col-12 mt-2"><h4 className="subheader">Сборка полного маршрута</h4></div>
                   <div className="col-12 col-md-6">
                     <FormField