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{ blake2b } from \"npm:blakejs\";\nexport type P={id:string,account:string,text:string,t:number|null,url:string|null,label?:number,campaign?:string};\nconst URL_RE=/https?:\\/\\/[^\\s)\\]}>\"']+/giu;\nconst WORD_RE=/[\\p{L}\\p{N}_]+/gu;\nconst TE=new TextEncoder();\nexport function normalizeText(text:string){return ((text||\"\").toLowerCase().replace(URL_RE,\" URL \").match(WORD_RE)||[]).join(\" \")}\nexport function tokenSet(text:string){return new Set(((text||\"\").toLowerCase().match(WORD_RE)||[]))}\nexport function jaccard(A:Set,B:Set){if(!A.size&&!B.size)return 1;if(!A.size||!B.size)return 0;let x=0;for(const t of A)if(B.has(t))x++;return x/(A.size+B.size-x)}\nexport function extractUrls(text:string,explicit:string|null){const m=[...((text||\"\").match(URL_RE)||[])];if(explicit)m.push(String(explicit));return m}\nfunction codepoints(s:string){return Array.from(s)}\nfunction shingles(text:string,k=5){const c=codepoints(text.trim().replace(/\\s+/g,\" \"));if(c.length<=k)return c.length?[c.join(\"\")]:[];const out:string[]=[];for(let i=0;i<=c.length-k;i++)out.push(c.slice(i,i+k).join(\"\"));return out}\nfunction u64be(bytes:Uint8Array){let v=0n;for(const b of bytes)v=(v<<8n)+BigInt(b);return v}\nexport function minhashSignature(text:string){const sh=shingles(text);if(!sh.length)return [] as string[];return [\"0\",\"1\",\"2\",\"3\"].map(seed=>{let best:bigint|null=null;for(const x of sh){const v=u64be(blake2b(TE.encode(seed+x),undefined,8));if(best===null||v,ids:number[],cap=128){if(ids.length<2)return;if(ids.length>cap){const root=ids[0];for(const j of ids.slice(1))pairs.add(pairKey(root,j))}else for(let a=0;anormalizeText(p.text)),tok=norms.map(tokenSet),df=new Map();for(const ss of tok)for(const t of ss)df.set(t,(df.get(t)||0)+1);const maxDf=Math.max(3,Math.floor(posts.length*maxDfRatio)),pairs=new Set(),inv=new Map();for(let i=0;i1&&d<=maxDf){if(!inv.has(t))inv.set(t,[]);inv.get(t)!.push(i)}}for(const ids of inv.values())if(ids.length<=128)addBucketPairs(pairs,ids,128);const bands=new Map();for(let i=0;i();for(let i=0;ik.split(\",\").map(Number) as [number,number]);arr.sort((a,b)=>a[0]-b[0]||a[1]-b[1]);return{pairs:arr,norms}}\nclass DSU{p:number[];r:number[];constructor(n:number){this.p=Array.from({length:n},(_,i)=>i);this.r=Array(n).fill(0)}find(x:number){while(this.p[x]!==x){this.p[x]=this.p[this.p[x]];x=this.p[x]}return x}union(a:number,b:number){a=this.find(a);b=this.find(b);if(a===b)return;if(this.r[a]0?100*(1-Math.exp(-count/k)):0}\nexport function analyzeProduction(posts:P[],syncWindow=120,simThreshold=.82,longitudinalWindow=21600){const {pairs,norms}=candidatePairs(posts);const toks=norms.map(tokenSet),urlSets=posts.map(p=>new Set(extractUrls(p.text,p.url))),duplicate:any[]=[],dsu=new DSU(posts.length);for(const [i,j] of pairs){if(posts[i].account===posts[j].account)continue;const sim=norms[i]===norms[j]?1:jaccard(toks[i],toks[j]);if(sim>=simThreshold&&Math.min(codepoints(norms[i]).length,codepoints(norms[j]).length)>=20){duplicate.push([i,j,sim]);dsu.union(i,j)}}const clusters=new Map();for(let i=0;inew Set(ids.map(i=>posts[i].account)).size>=2);const timed=posts.map((p,i)=>[i,p] as [number,P]).filter(([,p])=>p.t!==null).sort((a,b)=>(a[1].t as number)-(b[1].t as number));const sync:any[]=[];let left=0;for(let right=0;rightsyncWindow)left++;for(let k=left;k=simThreshold)sync.push([ia,ib,(b.t as number)-(a.t as number),sim,same?\"same_url\":\"similar_text\"])}}const by=new Map();const get=(a:string)=>{if(!by.has(a))by.set(a,{post_count:0,repetition_edge_count:0,sync_hit_count:0,media_edge_count:0,coordination_group_count:0,coordinated_windows:new Set()});return by.get(a)};for(const p of posts)if(p.account!==\"unknown\")get(p.account).post_count++;for(const [i,j] of duplicate)for(const a of [posts[i].account,posts[j].account])if(a!==\"unknown\")get(a).repetition_edge_count++;for(const [i,j] of sync)for(const a of [posts[i].account,posts[j].account])if(a!==\"unknown\")get(a).sync_hit_count++;for(const ids of groups){const accts=new Set(ids.map(i=>posts[i].account).filter(a=>a!==\"unknown\"));if(accts.size<2)continue;const windows=new Map>();for(const i of ids){const p=posts[i];if(p.t!==null&&p.account!==\"unknown\"){const w=Math.floor((p.t as number)/longitudinalWindow);if(!windows.has(w))windows.set(w,new Set());windows.get(w)!.add(p.account)}}const valid=[...windows.entries()].filter(([,a])=>a.size>=2).map(([w])=>w);for(const a of accts){const d=get(a);d.coordination_group_count++;for(const w of valid)if(windows.get(w)!.has(a))d.coordinated_windows.add(w)}}const accountReview:any[]=[];for(const [account,d] of [...by.entries()].sort((a,b)=>a[0].localeCompare(b[0]))){const windows=d.coordinated_windows.size,components={repetition:sat(d.repetition_edge_count,2),synchronization:sat(d.sync_hit_count,2),media_reuse:0,longitudinal:clamp(100*Math.max(0,windows-1)/3),group_participation:clamp(100*d.coordination_group_count/3)};const score=Math.round((.30*components.repetition+.30*components.synchronization+.15*components.media_reuse+.15*components.longitudinal+.10*components.group_participation)*10)/10;accountReview.push({account_id:account,review_score:score,post_count:d.post_count,repetition_edge_count:d.repetition_edge_count,sync_hit_count:d.sync_hit_count,media_edge_count:0,coordination_group_count:d.coordination_group_count,coordinated_window_count:windows,components:Object.fromEntries(Object.entries(components).map(([k,v])=>[k,Math.round((v as 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