v0.4.1 — Rename detection rewrite + separator normalization fix

CHANGELOG.md

@@ -4,6 +4,36 @@ All notable changes to the DarkPeers Mod Queue Helper will be documented in this
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/), and this project adheres to [Semantic Versioning](https://semver.org/).
 
+## [0.4.1] - 2026-04-06
+
+### Fixed
+
+- **Separator normalization in rename detection** — dot-separated filenames (e.g. `DTS-HD.MA.5.1`) now parse identically to space-separated titles (e.g. `DTS-HD MA 5.1`), eliminating false positives when the only difference is formatting
+  - Dots between words are normalized to spaces before tokenization
+  - Codec dots preserved (H.264, H.265)
+  - Channel dots preserved (5.1, 2.0, 7.1)
+  - Fixes false positive on: `The Indian Runner 1991 1080p BluRay REMUX AVC DTS-HD MA 5.1-TDD` vs `The.Indian.Runner.1991.BluRay.Remux.1080p.AVC.DTS-HD.MA.5.1-TDD.mkv`
+
+## [0.4.0] - 2026-04-06
+
+### Changed
+
+- **Rename detection rewrite** — replaced brittle word-overlap scoring and stripped-string cross-seed comparison with confidence-based `RenameDetector` module
+  - Weighted field-based scoring using `H.extractTitleElements` (title, year, resolution, source, codecs)
+  - Release group differences no longer penalize relevance score
+  - Codec alias matching (x264 = H.264, DD = AC-3, etc.)
+  - TV scope awareness — MediaInfo filename comparison skipped for season packs to prevent false positives
+  - Self-consistency checks (folder/file vs torrent name) as primary rename signal
+  - Five-level confidence model: `match`, `likely_match`, `uncertain`, `likely_renamed`, `renamed`
+  - Prowlarr results are now advisory (maximum: warn) — never auto-recommend REJECT
+  - Element ordering and file extension differences no longer cause false positives
+
+### Fixed
+
+- **False positive on element ordering** — `BluRay.1080p` vs `1080p.BluRay` no longer flagged as renamed
+- **False positive on group name differences** — different release group on indexer no longer treated as rename evidence
+- **TV season pack false positives** — single-episode MediaInfo filename no longer compared against season-level Prowlarr results
+
 ## [0.3.2] - 2026-04-05
 
 ### Fixed

modq-helper-darkpeers.user.js

@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         UNIT3D Mod Queue Helper — DarkPeers
 // @namespace    https://gitea.computerliebe.org/Procuria/dp-modq-helper
-// @version      0.3.2
+// @version      0.4.1
 // @description  Quality-gate checks for DarkPeers — extended moderation rules, title validation, SRRDB & Prowlarr integrations
 // @author       TQG Contributors
 // @updateURL    https://gitea.computerliebe.org/Procuria/dp-modq-helper/raw/branch/main/modq-helper-darkpeers.user.js
@@ -3754,6 +3754,297 @@ const Integrations = {
 };
 
 
+/* ========================================================================
+ *  RENAME DETECTOR — Confidence-based rename detection for Prowlarr
+ *  Replaces the brittle word-overlap + stripped-string comparison.
+ *  Uses H.extractTitleElements for structured field-based scoring.
+ * ======================================================================== */
+
+const RenameDetector = {
+
+  /** Codec aliases for fuzzy matching */
+  _codecAliases: {
+    "x264": "h.264", "h.264": "h.264", "avc": "h.264",
+    "x265": "h.265", "h.265": "h.265", "hevc": "h.265",
+    "dd": "ac-3", "ac-3": "ac-3",
+    "ddp": "e-ac-3", "dd+": "e-ac-3", "e-ac-3": "e-ac-3",
+    "truehd": "truehd", "atmos": "truehd",
+  },
+
+  /**
+   * tokenize — Parse a release name into structured fields.
+   * Wraps H.extractTitleElements and adds titleName + container.
+   */
+  tokenize(name) {
+    if (!name) return { raw: "", titleName: "", elements: [], positions: {}, group: null, year: null, resolution: null, source: null, vcodec: null, acodec: null, hdr: null, container: null };
+
+    let raw = name;
+    // Strip file extension
+    let container = null;
+    const extMatch = raw.match(/\.(mkv|mp4|avi|wmv|m4v|ts|m2ts|mov|flv|webm)$/i);
+    if (extMatch) {
+      container = extMatch[1].toLowerCase();
+      raw = raw.slice(0, -extMatch[0].length);
+    }
+
+    // Normalize separators before parsing — ensures dot-separated filenames
+    // (e.g. DTS-HD.MA.5.1) parse identically to space-separated titles
+    // (e.g. DTS-HD MA 5.1). Without this, multi-word codecs like DTS-HD MA
+    // only match when space-separated.
+    // Preserve dots in codec patterns like H.264, H.265 where the dot is
+    // semantically meaningful (letter.digits pattern).
+    const normalized = raw
+      .replace(/[_]/g, " ")
+      .replace(/(?<=[A-Za-z])\.(?=\d{3})/g, "\x00")  // protect codec dots (H.264, H.265)
+      .replace(/(?<=\d)\.(?=\d)/g, "\x01")            // protect channel dots (5.1, 7.1, 2.0)
+      .replace(/\./g, " ")
+      .replace(/\x00/g, ".")
+      .replace(/\x01/g, ".");
+
+    const { elements, positions } = H.extractTitleElements(normalized);
+
+    // Extract individual fields from elements array
+    const fieldOf = (type) => {
+      const el = elements.find(e => e.type === type);
+      return el ? el.value : null;
+    };
+
+    // Derive titleName: text before the first structural token
+    let titleEnd = raw.length;
+    for (const el of elements) {
+      if (el.position < titleEnd) titleEnd = el.position;
+    }
+    const titleName = raw.slice(0, titleEnd).replace(/[.\-_]/g, " ").replace(/\s+/g, " ").trim();
+
+    return {
+      raw: name,
+      titleName,
+      elements,
+      positions,
+      group: fieldOf("group"),
+      year: fieldOf("year"),
+      resolution: fieldOf("resolution"),
+      source: fieldOf("source") || fieldOf("type"),
+      vcodec: fieldOf("vcodec"),
+      acodec: fieldOf("acodec"),
+      hdr: fieldOf("hdr"),
+      container,
+    };
+  },
+
+  /**
+   * _jaccardWords — Jaccard similarity on normalized word sets.
+   */
+  _jaccardWords(a, b) {
+    if (!a || !b) return 0;
+    const wordsA = new Set(a.toLowerCase().split(/\s+/).filter(Boolean));
+    const wordsB = new Set(b.toLowerCase().split(/\s+/).filter(Boolean));
+    if (wordsA.size === 0 && wordsB.size === 0) return 1;
+    if (wordsA.size === 0 || wordsB.size === 0) return 0;
+    let intersection = 0;
+    for (const w of wordsA) if (wordsB.has(w)) intersection++;
+    const union = new Set([...wordsA, ...wordsB]).size;
+    return union === 0 ? 0 : intersection / union;
+  },
+
+  /**
+   * _normalizeCodec — Normalize a codec string via alias table.
+   */
+  _normalizeCodec(codec) {
+    if (!codec) return null;
+    const key = codec.toLowerCase().replace(/[.\s-]/g, "").replace("dts", "dts");
+    // Direct alias lookup
+    for (const [alias, canonical] of Object.entries(this._codecAliases)) {
+      if (key === alias.replace(/[.\s-]/g, "")) return canonical;
+    }
+    return codec.toLowerCase();
+  },
+
+  /**
+   * scoreMatch — Weighted field comparison between upload and result tokens.
+   * Group is excluded from relevance score (tracked separately).
+   */
+  scoreMatch(uploadTokens, resultTokens) {
+    const weights = { titleName: 3.0, year: 2.0, resolution: 1.5, source: 1.0, vcodec: 1.0, acodec: 0.5 };
+    let totalWeight = 0;
+    let weightedSum = 0;
+    const fieldScores = {};
+
+    // titleName — Jaccard similarity
+    const titleScore = this._jaccardWords(uploadTokens.titleName, resultTokens.titleName);
+    fieldScores.titleName = titleScore;
+    weightedSum += titleScore * weights.titleName;
+    totalWeight += weights.titleName;
+
+    // Exact-match fields
+    const exactFields = ["year", "resolution"];
+    for (const f of exactFields) {
+      if (uploadTokens[f] || resultTokens[f]) {
+        const score = uploadTokens[f] && resultTokens[f] && uploadTokens[f].toLowerCase() === resultTokens[f].toLowerCase() ? 1.0 : 0.0;
+        fieldScores[f] = score;
+        weightedSum += score * weights[f];
+        totalWeight += weights[f];
+      }
+    }
+
+    // Source — exact match
+    if (uploadTokens.source || resultTokens.source) {
+      const score = uploadTokens.source && resultTokens.source && uploadTokens.source.toLowerCase().replace(/[.\s-]/g, "") === resultTokens.source.toLowerCase().replace(/[.\s-]/g, "") ? 1.0 : 0.0;
+      fieldScores.source = score;
+      weightedSum += score * weights.source;
+      totalWeight += weights.source;
+    }
+
+    // Codec fields — alias-aware
+    for (const f of ["vcodec", "acodec"]) {
+      if (uploadTokens[f] || resultTokens[f]) {
+        const a = this._normalizeCodec(uploadTokens[f]);
+        const b = this._normalizeCodec(resultTokens[f]);
+        const score = a && b && a === b ? 1.0 : 0.0;
+        fieldScores[f] = score;
+        weightedSum += score * weights[f];
+        totalWeight += weights[f];
+      }
+    }
+
+    const relevanceScore = totalWeight > 0 ? weightedSum / totalWeight : 0;
+    const groupMatch = !!(uploadTokens.group && resultTokens.group &&
+      uploadTokens.group.toLowerCase() === resultTokens.group.toLowerCase());
+
+    return { relevanceScore, fieldScores, groupMatch };
+  },
+
+  /**
+   * findBestMatch — Select the best Prowlarr result by relevance score.
+   */
+  findBestMatch(uploadTokens, results) {
+    let best = null;
+    let bestScore = -1;
+    for (const r of results) {
+      const tokens = this.tokenize(r.title || "");
+      const score = this.scoreMatch(uploadTokens, tokens);
+      if (score.relevanceScore > bestScore) {
+        bestScore = score.relevanceScore;
+        best = { title: r.title, indexer: r.indexer, size: r.size, tokens, score, relevanceScore: score.relevanceScore };
+      }
+    }
+    return best;
+  },
+
+  /**
+   * classifyTVScope — Determine upload scope and adapt search query.
+   */
+  classifyTVScope(torrentName, fileStructure) {
+    const se = H.parseSeasonEpisode(torrentName);
+    if (se.season !== null && se.episode !== null) {
+      return { scope: "episode", season: se.season, searchQuery: torrentName, canCompareMediaInfoFile: true };
+    }
+    if (se.isSeasonPack) {
+      // For season packs, build a simpler query: title + year + S##
+      const year = H.extractYear(torrentName);
+      const titleEnd = torrentName.indexOf(se.raw);
+      const titlePart = titleEnd > 0 ? torrentName.slice(0, titleEnd).replace(/[.\-_]/g, " ").trim() : torrentName;
+      const query = [titlePart, year, se.raw].filter(Boolean).join(" ");
+      return { scope: "season_pack", season: se.season, searchQuery: query, canCompareMediaInfoFile: false };
+    }
+    // Not TV
+    return { scope: "movie", season: null, searchQuery: torrentName, canCompareMediaInfoFile: true };
+  },
+
+  /**
+   * structurallyEquivalent — Compare two tokenized names by element sets.
+   * Ignores element order, separator style, and container extension.
+   * optionally ignores group differences.
+   */
+  structurallyEquivalent(tokensA, tokensB, { ignoreGroup = false } = {}) {
+    // Compare title name words
+    const titleSim = this._jaccardWords(tokensA.titleName, tokensB.titleName);
+    if (titleSim < 0.5) return false;
+
+    // Compare structural fields — must match if both present
+    const fields = ["year", "resolution"];
+    for (const f of fields) {
+      if (tokensA[f] && tokensB[f] && tokensA[f].toLowerCase() !== tokensB[f].toLowerCase()) return false;
+    }
+
+    // Codec comparison with aliases
+    for (const f of ["vcodec", "acodec"]) {
+      if (tokensA[f] && tokensB[f]) {
+        const a = this._normalizeCodec(tokensA[f]);
+        const b = this._normalizeCodec(tokensB[f]);
+        if (a !== b) return false;
+      }
+    }
+
+    // Group comparison
+    if (!ignoreGroup && tokensA.group && tokensB.group) {
+      if (tokensA.group.toLowerCase() !== tokensB.group.toLowerCase()) return false;
+    }
+
+    return true;
+  },
+
+  /**
+   * assessRename — Full rename assessment with confidence levels.
+   * Returns { level, action, note, issues, fieldScores }
+   */
+  assessRename(data, bestMatch, tvScope) {
+    const issues = [];
+    const uploadTokens = this.tokenize(data.torrentName);
+
+    // Phase 1: Self-consistency checks (strongest signal)
+    if (data.fileStructure?.folderName) {
+      const folderTokens = this.tokenize(data.fileStructure.folderName);
+      if (!this.structurallyEquivalent(uploadTokens, folderTokens)) {
+        issues.push({
+          type: "folder", severity: "high",
+          expected: data.torrentName,
+          found: data.fileStructure.folderName,
+        });
+      }
+    }
+
+    if (data.mediaInfoFilename && tvScope.canCompareMediaInfoFile) {
+      const miTokens = this.tokenize(data.mediaInfoFilename);
+      if (!this.structurallyEquivalent(uploadTokens, miTokens)) {
+        issues.push({
+          type: "filename", severity: "high",
+          expected: data.torrentName,
+          found: data.mediaInfoFilename,
+        });
+      }
+    }
+
+    // Phase 2: Confidence assignment
+    const score = bestMatch.score;
+    const selfConsistent = issues.filter(i => i.severity === "high").length === 0;
+
+    if (selfConsistent && score.relevanceScore >= 0.80) {
+      const note = score.groupMatch ? null : "Best Prowlarr match has a different release group";
+      return { level: "match", action: "pass", note, issues, fieldScores: score.fieldScores };
+    }
+
+    if (selfConsistent && score.relevanceScore >= 0.60) {
+      return { level: "likely_match", action: "pass", note: "Minor field differences with indexed release", issues, fieldScores: score.fieldScores };
+    }
+
+    if (!selfConsistent) {
+      const highCount = issues.filter(i => i.severity === "high").length;
+      if (highCount >= 2) {
+        return { level: "renamed", action: "warn", note: "Folder and filename both differ from torrent name", issues, fieldScores: score.fieldScores };
+      }
+      return { level: "likely_renamed", action: "warn", note: "File or folder name differs from torrent name", issues, fieldScores: score.fieldScores };
+    }
+
+    if (score.relevanceScore < 0.60) {
+      return { level: "uncertain", action: "advisory", note: "No strong Prowlarr match — cannot assess rename status", issues, fieldScores: score.fieldScores };
+    }
+
+    return { level: "uncertain", action: "advisory", note: null, issues, fieldScores: score.fieldScores };
+  },
+};
+
+
 /* ========================================================================
  *  MESSAGE BUILDER — Corrective message generation
  *  Ported from the original G object. Rules URL is now configurable.
@@ -3873,7 +4164,7 @@ const U={getStatusIcon(e){switch(e){case"pass":return'<i class="fas fa-check-cir
           </div>
           <div id="mh-filename-result" class="mh-filename-result"></div>
         </div>
-        <div class="panel__body mh-body">${T}${this._buildIntegrationPlaceholders(e)}</div>`,n},injectPanel(e){const n=E.getModerationPanel();if(n)n.parentNode.insertBefore(e,n);else{const t=document.querySelector(_resolvedSelectors.torrentTags);t&&t.parentNode.insertBefore(e,t.nextSibling)}this.attachEvents(e)},attachEvents(e){const n=e.querySelector("#mh-toggle-all");if(n){let D=!1;n.addEventListener("click",()=>{D=!D,e.querySelectorAll(".mh-accordion, .mh-section").forEach(x=>x.open=D),n.querySelector("i").className=D?"fas fa-angles-up":"fas fa-angles-down",n.title=D?"Collapse all sections":"Expand all sections"})}const t=e.querySelector("#mh-corrective-text"),s=e.querySelector("#mh-corrective-editor");t&&s&&(t.addEventListener("click",()=>{t.style.display="none",s.style.display="block",s.focus()}),s.addEventListener("blur",()=>{t.textContent=s.value,t.style.display="",s.style.display=""}));const a=()=>s?s.value:"",o=e.querySelector("#mh-copy-message");o&&o.addEventListener("click",()=>{const D=a();navigator.clipboard.writeText(D).then(()=>{const x=o.querySelector("i");x.className="fas fa-check",o.classList.add("mh-btn--success"),setTimeout(()=>{x.className="fas fa-copy",o.classList.remove("mh-btn--success")},2e3)})});const c=D=>{const x=document.querySelectorAll(_resolvedSelectors.moderationForms);for(const p of x){const y=p.querySelector(_resolvedSelectors.moderationStatus);if(y&&y.value===D)return p.querySelector(_resolvedSelectors.moderationMessage)}return null},r=(D,x)=>{const p=e.querySelector(D);p&&p.addEventListener("click",()=>{const y=a(),C=c(x);if(C){C.value=y,C.dispatchEvent(new Event("input",{bubbles:!0}));const h=p.querySelector("i");h.className="fas fa-check",p.classList.add("mh-btn--success"),setTimeout(()=>{h.className="fas fa-paste",p.classList.remove("mh-btn--success")},2e3)}else{const h=p.querySelector("i");h.className="fas fa-xmark",p.classList.add("mh-btn--fail"),setTimeout(()=>{h.className="fas fa-paste",p.classList.remove("mh-btn--fail")},2e3)}})};r("#mh-fill-postpone",_resolvedModStatuses.postpone),r("#mh-fill-reject",_resolvedModStatuses.reject);const d=e.querySelector("#mh-filename-compare-btn"),f=e.querySelector("#mh-filename-block"),A=e.querySelector("#mh-filename-uploaded"),T=e.querySelector("#mh-filename-input"),b=e.querySelector("#mh-filename-run"),u=e.querySelector("#mh-filename-result");if(d&&f&&d.addEventListener("click",()=>{const D=f.style.display!=="none";if(f.style.display=D?"none":"",d.classList.toggle("mh-btn--active",!D),!D&&A){const x=E.getMediaInfoFilename()||"(not found)";A.textContent=x}}),b&&T&&u){const D=()=>{const x=T.value.trim();if(!x){u.innerHTML='<span class="mh-diff-error">Please enter a reference filename.</span>';return}const p=E.getMediaInfoFilename();if(!p||p==="(not found)"){u.innerHTML='<span class="mh-diff-error">Could not read MediaInfo filename from page.</span>';return}const y=z.diff(x,p);u.innerHTML=z.renderDiff(y)};b.addEventListener("click",D),T.addEventListener("keydown",x=>{x.key==="Enter"&&D()})}},_buildIntegrationPlaceholders(results){if(!results.nogroup&&!results.dpTitle)return"";return`<div class="mh-section-group"><details class="mh-section" open><summary class="mh-section__header"><i class="fas fa-plug mh-section__icon"></i><span class="mh-section__title">External Integrations</span></summary><div class="mh-section__body"><div data-integration="srrdb" class="mh-integration mh-integration--loading"><span class="mh-integration__icon"><i class="fas fa-spinner fa-spin"></i></span><span class="mh-integration__label">SRRDB</span><span class="mh-integration__msg">Checking scene database...</span></div><div data-integration="prowlarr" class="mh-integration mh-integration--loading"><span class="mh-integration__icon"><i class="fas fa-spinner fa-spin"></i></span><span class="mh-integration__label">Prowlarr</span><span class="mh-integration__msg">Searching indexers...</span></div></div></details></div>`},renderIntegrationResult(name,result){const esc=(s)=>String(s||"").replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");if(result.error){return`<div class="mh-integration mh-integration--warn"><span class="mh-integration__icon"><i class="fas fa-exclamation-triangle mh-icon--warn"></i></span><span class="mh-integration__label">${esc(name)}</span><span class="mh-integration__msg">${esc(result.error)}</span></div>`}if(result.notConfigured){return`<div class="mh-integration mh-integration--na"><span class="mh-integration__icon"><i class="fas fa-minus-circle mh-icon--na"></i></span><span class="mh-integration__label">${esc(name)}</span><span class="mh-integration__msg">Not configured — open ModQ Helper Settings</span></div>`}if(name==="SRRDB"){if(!result.found){return`<div class="mh-integration mh-integration--na"><span class="mh-integration__icon"><i class="fas fa-minus-circle mh-icon--na"></i></span><span class="mh-integration__label">SRRDB</span><span class="mh-integration__msg">Not found — may not be a scene release</span></div>Line truncated
+        <div class="panel__body mh-body">${T}${this._buildIntegrationPlaceholders(e)}</div>`,n},injectPanel(e){const n=E.getModerationPanel();if(n)n.parentNode.insertBefore(e,n);else{const t=document.querySelector(_resolvedSelectors.torrentTags);t&&t.parentNode.insertBefore(e,t.nextSibling)}this.attachEvents(e)},attachEvents(e){const n=e.querySelector("#mh-toggle-all");if(n){let D=!1;n.addEventListener("click",()=>{D=!D,e.querySelectorAll(".mh-accordion, .mh-section").forEach(x=>x.open=D),n.querySelector("i").className=D?"fas fa-angles-up":"fas fa-angles-down",n.title=D?"Collapse all sections":"Expand all sections"})}const t=e.querySelector("#mh-corrective-text"),s=e.querySelector("#mh-corrective-editor");t&&s&&(t.addEventListener("click",()=>{t.style.display="none",s.style.display="block",s.focus()}),s.addEventListener("blur",()=>{t.textContent=s.value,t.style.display="",s.style.display=""}));const a=()=>s?s.value:"",o=e.querySelector("#mh-copy-message");o&&o.addEventListener("click",()=>{const D=a();navigator.clipboard.writeText(D).then(()=>{const x=o.querySelector("i");x.className="fas fa-check",o.classList.add("mh-btn--success"),setTimeout(()=>{x.className="fas fa-copy",o.classList.remove("mh-btn--success")},2e3)})});const c=D=>{const x=document.querySelectorAll(_resolvedSelectors.moderationForms);for(const p of x){const y=p.querySelector(_resolvedSelectors.moderationStatus);if(y&&y.value===D)return p.querySelector(_resolvedSelectors.moderationMessage)}return null},r=(D,x)=>{const p=e.querySelector(D);p&&p.addEventListener("click",()=>{const y=a(),C=c(x);if(C){C.value=y,C.dispatchEvent(new Event("input",{bubbles:!0}));const h=p.querySelector("i");h.className="fas fa-check",p.classList.add("mh-btn--success"),setTimeout(()=>{h.className="fas fa-paste",p.classList.remove("mh-btn--success")},2e3)}else{const h=p.querySelector("i");h.className="fas fa-xmark",p.classList.add("mh-btn--fail"),setTimeout(()=>{h.className="fas fa-paste",p.classList.remove("mh-btn--fail")},2e3)}})};r("#mh-fill-postpone",_resolvedModStatuses.postpone),r("#mh-fill-reject",_resolvedModStatuses.reject);const d=e.querySelector("#mh-filename-compare-btn"),f=e.querySelector("#mh-filename-block"),A=e.querySelector("#mh-filename-uploaded"),T=e.querySelector("#mh-filename-input"),b=e.querySelector("#mh-filename-run"),u=e.querySelector("#mh-filename-result");if(d&&f&&d.addEventListener("click",()=>{const D=f.style.display!=="none";if(f.style.display=D?"none":"",d.classList.toggle("mh-btn--active",!D),!D&&A){const x=E.getMediaInfoFilename()||"(not found)";A.textContent=x}}),b&&T&&u){const D=()=>{const x=T.value.trim();if(!x){u.innerHTML='<span class="mh-diff-error">Please enter a reference filename.</span>';return}const p=E.getMediaInfoFilename();if(!p||p==="(not found)"){u.innerHTML='<span class="mh-diff-error">Could not read MediaInfo filename from page.</span>';return}const y=z.diff(x,p);u.innerHTML=z.renderDiff(y)};b.addEventListener("click",D),T.addEventListener("keydown",x=>{x.key==="Enter"&&D()})}},_buildIntegrationPlaceholders(results){if(!results.nogroup&&!results.dpTitle)return"";return`<div class="mh-section-group"><details class="mh-section" open><summary class="mh-section__header"><i class="fas fa-plug mh-section__icon"></i><span class="mh-section__title">External Integrations</span></summary><div class="mh-section__body"><div data-integration="srrdb" class="mh-integration mh-integration--loading"><span class="mh-integration__icon"><i class="fas fa-spinner fa-spin"></i></span><span class="mh-integration__label">SRRDB</span><span class="mh-integration__msg">Checking scene database...</span></div><div data-integration="prowlarr" class="mh-integration mh-integration--loading"><span class="mh-integration__icon"><i class="fas fa-spinner fa-spin"></i></span><span class="mh-integration__label">Prowlarr</span><span class="mh-integration__msg">Searching indexers...</span></div></div></details></div>`},renderIntegrationResult(name,result){const esc=(s)=>String(s||"").replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");if(result.error){return`<div class="mh-integration mh-integration--warn"><span class="mh-integration__icon"><i class="fas fa-exclamation-triangle mh-icon--warn"></i></span><span class="mh-integration__label">${esc(name)}</span><span class="mh-integration__msg">${esc(result.error)}</span></div>`}if(result.notConfigured){return`<div class="mh-integration mh-integration--na"><span class="mh-integration__icon"><i class="fas fa-minus-circle mh-icon--na"></i></span><span class="mh-integration__label">${esc(name)}</span><span class="mh-integration__msg">Not configured — open ModQ Helper Settings</span></div>`}if(name==="SRRDB"){if(!result.found){return`<div class="mh-integration mh-integration--na"><span class="mh-integration__icon"><i class="fas fa-minus-circle mh-icon--na"></i></span><span class="mh-integration__label">SRRDB</span><span class="mh-integration__msg">Not found — may not be a scene release</span></div>Line truncated
 
 /* ========================================================================
  *  CSS — Panel styles (injected via GM_addStyle)
@@ -4610,97 +4901,28 @@ function main() {
         })();
       }
 
-      // Prowlarr: search + rename / cross-seed detection
+      // Prowlarr: confidence-based rename detection via RenameDetector
       if (dpFeatures.prowlarr && settings.prowlarr?.enabled && settings.prowlarr?.url) {
         (async () => {
           try {
-            const searchResult = await Integrations.prowlarr.search(settings.prowlarr, data.torrentName);
+            const uploadTokens = RenameDetector.tokenize(data.torrentName);
+            const tvScope = RenameDetector.classifyTVScope(data.torrentName, data.fileStructure);
+
+            const searchResult = await Integrations.prowlarr.search(settings.prowlarr, tvScope.searchQuery);
 
             if (searchResult.found && searchResult.results.length > 0) {
-              // --- Best match by word-overlap similarity ---
-              const normalize = (t) => t.toLowerCase().replace(/[.\-_]/g, " ").replace(/\s+/g, " ").trim();
-              const uploadedNorm = normalize(data.torrentName);
-
-              let bestScore = -1;
-              let bestMatch = null;
-              for (const r of searchResult.results) {
-                const rNorm = normalize(r.title || "");
-                const uploadedWords = new Set(uploadedNorm.split(" "));
-                const rWords = rNorm.split(" ");
-                const matchCount = rWords.filter(w => uploadedWords.has(w)).length;
-                const score = matchCount / Math.max(uploadedWords.size, rWords.length);
-                if (score > bestScore) {
-                  bestScore = score;
-                  bestMatch = { title: r.title, indexer: r.indexer, size: r.size, score };
-                }
-              }
+              const bestMatch = RenameDetector.findBestMatch(uploadTokens, searchResult.results);
 
               if (bestMatch) {
-                bestMatch.uploadedTitle = data.torrentName;
-                bestMatch.renameWarning = bestMatch.score < 0.6;
-
-                // --- Cross-seed / file rename detection ---
-                // Compare local filenames and folder name against the Prowlarr
-                // best-match title to detect renames that break cross-seed.
-                // Cross-seed tools match on exact folder/file names; if the
-                // uploader renamed files, cross-seeding is impossible.
-                const crossSeed = { issues: [] };
-
-                // Expected base: the Prowlarr title IS the expected folder/file stem
-                const expectedStem = (bestMatch.title || "").replace(/\.[a-z0-9]{2,4}$/i, "");
-                const expectedNorm = normalize(expectedStem);
-
-                // Check folder name if present
-                if (data.fileStructure?.folderName) {
-                  const folderNorm = normalize(data.fileStructure.folderName);
-                  if (expectedNorm && folderNorm !== expectedNorm) {
-                    // Tolerate minor separator differences (.  vs space)
-                    const stripped = (s) => s.replace(/[\s.\-_]/g, "").toLowerCase();
-                    if (stripped(data.fileStructure.folderName) !== stripped(expectedStem)) {
-                      crossSeed.issues.push({
-                        type: "folder",
-                        expected: expectedStem,
-                        found: data.fileStructure.folderName,
-                      });
-                    }
-                  }
-                }
-
-                // Check MediaInfo filename (most reliable single-file indicator)
-                const miFilename = data.mediaInfoFilename;
-                if (miFilename && expectedStem) {
-                  const miStem = miFilename.replace(/\.[a-z0-9]{2,4}$/i, "");
-                  const stripped = (s) => s.replace(/[\s.\-_]/g, "").toLowerCase();
-                  if (stripped(miStem) !== stripped(expectedStem)) {
-                    crossSeed.issues.push({
-                      type: "filename",
-                      expected: expectedStem,
-                      found: miStem,
-                    });
-                  }
-                }
-
-                // Check individual files in the file list
-                if (data.fileStructure?.files?.length > 0 && data.fileStructure.files.length <= 5) {
-                  // For small packs, check each file starts with the expected stem
-                  const stripped = (s) => s.replace(/[\s.\-_]/g, "").toLowerCase();
-                  const expStripped = stripped(expectedStem);
-                  for (const f of data.fileStructure.files) {
-                    const fname = f.split("/").pop().replace(/\.[a-z0-9]{2,4}$/i, "");
-                    if (!stripped(fname).startsWith(expStripped.substring(0, Math.min(20, expStripped.length)))) {
-                      // Only flag if the file doesn't even share the first ~20 chars
-                      crossSeed.issues.push({
-                        type: "file",
-                        expected: expectedStem + ".*",
-                        found: fname,
-                      });
-                      break; // One example is enough
-                    }
-                  }
-                }
-
-                bestMatch.crossSeed = crossSeed;
-                searchResult.bestMatch = bestMatch;
+                const assessment = RenameDetector.assessRename(data, bestMatch, tvScope);
+                searchResult.bestMatch = {
+                  title: bestMatch.title,
+                  indexer: bestMatch.indexer,
+                  size: bestMatch.size,
+                  uploadedTitle: data.torrentName,
+                  relevanceScore: bestMatch.relevanceScore,
+                  confidence: assessment,
+                };
               }
             }