feat: clean up collection job log UI

- Filter out debug noise (plan-B per-path lines, heartbeats, timing stats, telemetry)
- Strip server-side nanosecond timestamp prefix from displayed messages
- Transform snapshot progress lines to show current path instead of doc count + ETA
- Humanize recurring message patterns (plan-B summary, prefetch, snapshot total)
- Raw collect.log and raw_export.json are unaffected

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

web/static/js/app.js

@@ -523,14 +523,61 @@ function appendJobLog(message) {
         return;
     }
 
-    const time = new Date().toLocaleTimeString('ru-RU', { hour12: false });
+    const parsed = parseServerLogLine(message);
+    if (isCollectLogNoise(parsed.message)) {
+        // Still count toward log length so syncServerLogs offset stays correct,
+        // but mark as hidden so renderCollectionJob skips it.
+        collectionJob.logs.push({
+            id: ++collectionJobLogCounter,
+            time: parsed.time || new Date().toLocaleTimeString('ru-RU', { hour12: false }),
+            message: parsed.message,
+            hidden: true
+        });
+        return;
+    }
+
     collectionJob.logs.push({
         id: ++collectionJobLogCounter,
-        time,
-        message
+        time: parsed.time || new Date().toLocaleTimeString('ru-RU', { hour12: false }),
+        message: humanizeCollectLogMessage(parsed.message)
     });
 }
 
+// Transform technical log messages into human-readable form for the UI.
+// The original messages are preserved in collect.log / raw_export.
+function humanizeCollectLogMessage(msg) {
+    // "Redfish snapshot: документов=520, ETA≈16s, корни=Chassis(294), Systems(114), последний=/redfish/v1/..."
+    // → "Snapshot: /Chassis/Self/PCIeDevices/00_34_04"
+    let m = msg.match(/snapshot:\s+документов=\d+[^,]*,.*последний=(\S+)/i);
+    if (m) {
+        const path = m[1].replace(/^\.\.\./, '').replace(/^\/redfish\/v1/, '') || m[1];
+        return `Snapshot: ${path}`;
+    }
+
+    // "Redfish snapshot: собрано N документов"
+    m = msg.match(/snapshot:\s+собрано\s+(\d+)\s+документов/i);
+    if (m) {
+        return `Snapshot: итого ${m[1]} документов`;
+    }
+
+    // "Redfish: plan-B завершен за 30s (targets=18, recovered=0)"
+    m = msg.match(/plan-B завершен за ([^(]+)\(targets=(\d+),\s*recovered=(\d+)\)/i);
+    if (m) {
+        const recovered = parseInt(m[3], 10);
+        const suffix = recovered > 0 ? `, восстановлено ${m[3]}` : '';
+        return `Plan-B: завершен за ${m[1].trim()}${suffix}`;
+    }
+
+    // "Redfish: prefetch критичных endpoint (адаптивно 9/72)..."
+    m = msg.match(/prefetch критичных endpoint[^(]*\(([^)]+)\)/i);
+    if (m) {
+        return `Prefetch критичных endpoint (${m[1]})`;
+    }
+
+    // Strip "Redfish: " / "Redfish snapshot: " prefix — redundant in context
+    return msg.replace(/^Redfish(?:\s+snapshot)?:\s+/i, '');
+}
+
 function renderCollectionJob() {
     const jobStatusBlock = document.getElementById('api-job-status');
     const jobIdValue = document.getElementById('job-id-value');
@@ -576,9 +623,11 @@ function renderCollectionJob() {
     renderJobActiveModules(activeModulesBlock, activeModulesList);
     renderJobDebugInfo(debugInfoBlock, debugSummary, phaseTelemetryNode);
 
-    logsList.innerHTML = [...collectionJob.logs].reverse().map((log) => (
-        `<li><span class="log-time">${escapeHtml(log.time)}</span><span class="log-message">${escapeHtml(log.message)}</span></li>`
-    )).join('');
+    logsList.innerHTML = [...collectionJob.logs].reverse()
+        .filter((log) => !log.hidden)
+        .map((log) => (
+            `<li><span class="log-time">${escapeHtml(log.time)}</span><span class="log-message">${escapeHtml(log.message)}</span></li>`
+        )).join('');
 
     cancelButton.disabled = isTerminal;
     setApiFormBlocked(!isTerminal);
@@ -668,6 +717,38 @@ function syncServerLogs(logs) {
     }
 }
 
+// Patterns for log lines that are internal debug noise and should not be shown in the UI.
+const _collectLogNoisePatterns = [
+    /plan-B \(\d+\/\d+/,                          // individual plan-B step lines
+    /plan-B топ веток/,
+    /snapshot: heartbeat/,
+    /snapshot: post-probe коллекций \(/,
+    /snapshot: топ веток/,
+    /prefetch завершен/,
+    /cooldown перед повторным добором/,
+    /Redfish telemetry:/,
+    /redfish-postprobe-metrics:/,
+    /redfish-prefetch-metrics:/,
+    /redfish-collect:/,
+    /redfish-profile-plan:/,
+    /redfish replay:/,
+];
+
+function isCollectLogNoise(message) {
+    return _collectLogNoisePatterns.some((re) => re.test(message));
+}
+
+// Strip the server-side RFC3339Nano timestamp prefix from a log line and return {time, message}.
+function parseServerLogLine(raw) {
+    const m = String(raw).match(/^(\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d+)?Z)\s+(.*)/s);
+    if (!m) {
+        return { time: null, message: String(raw).trim() };
+    }
+    const d = new Date(m[1]);
+    const time = isNaN(d) ? null : d.toLocaleTimeString('ru-RU', { hour12: false });
+    return { time, message: m[2].trim() };
+}
+
 function normalizeJobStatus(status) {
     return String(status || '').trim().toLowerCase();
 }