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{ sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { initQuantSchema } from \"./morgan_quant_schema.ts\";\nimport { runAccelerated } from \"./morgan_system_accelerator_skill.ts\";\nexport const ASSETS=[{symbol:'BTC',cb:'BTC-USD',kr:'XBTUSD'},{symbol:'ETH',cb:'ETH-USD',kr:'ETHUSD'},{symbol:'POL',cb:'POL-USD',kr:'POLUSD'}] as const;\nexport type MarketRow={asset:string;price:number;price_a:number;price_b:number;relative_diff:number;bid:number|null;ask:number|null;spread_bps:number|null;verified:boolean;captured_at:string};\ntype Quote={price:number;bid:number;ask:number;received_at:string};\nexport function quote(price:unknown,bid:unknown,ask:unknown):Quote {\n const values=[price,bid,ask];\n if(values.some(x=>x==null||String(x).trim()===''||!Number.isFinite(Number(x))||Number(x)<=0)||Number(bid)>Number(ask))throw Error('INVALID_QUOTE');\n return {price:Number(price),bid:Number(bid),ask:Number(ask),received_at:new Date().toISOString()};\n}\nasync function ticker(url:string,venue:'cb'|'kr',fetcher:typeof fetch=fetch){\n const r=await fetcher(url,{headers:{accept:'application/json'},signal:AbortSignal.timeout(8000),redirect:'error'});\n if(!r.ok)throw Error('TICKER_HTTP_FAILURE');const j=await r.json();\n if(venue==='cb')return quote(j.price,j.bid,j.ask);\n if(!Array.isArray(j.error)||j.error.length)throw Error('KRAKEN_ERROR');\n const x=Object.values(j.result??{})[0] as any;return quote(x?.c?.[0],x?.b?.[0],x?.a?.[0]);\n}\nexport async function collectMarketQuotes(fetcher:typeof fetch=fetch,maxParallel=4){\n return await runAccelerated(ASSETS.flatMap(a=>[\n {id:a.symbol+':cb',readOnly:true,run:()=>ticker(`https://api.exchange.coinbase.com/products/${a.cb}/ticker`,'cb',fetcher)},\n {id:a.symbol+':kr',readOnly:true,run:()=>ticker(`https://api.kraken.com/0/public/Ticker?pair=${a.kr}`,'kr',fetcher)}\n ]),maxParallel);\n}\nexport function combineQuotes(asset:string,a:Quote,b:Quote):MarketRow{\n const ref=(a.price+b.price)/2,diff=Math.abs(a.price-b.price)/ref;\n // A cross-venue crossed book is not a zero-cost executable spread.\n const spread=Math.max((a.ask-a.bid)/a.price,(b.ask-b.bid)/b.price)*10000;\n return {asset,price:ref,price_a:a.price,price_b:b.price,relative_diff:diff,bid:a.bid,ask:a.ask,spread_bps:spread,verified:diff<=0.01,captured_at:[a.received_at,b.received_at].sort()[0]};\n}\nexport async function liveMarketSnapshot(){\n await initQuantSchema();const collected=await collectMarketQuotes();const out:MarketRow[]=[];\n for(const a of ASSETS){\n const cb=collected.results[a.symbol+':cb'],kr=collected.results[a.symbol+':kr'];\n const m=cb.status==='PASS'&&kr.status==='PASS'?combineQuotes(a.symbol,cb.value!,kr.value!):null;\n const now=m?.captured_at??new Date().toISOString();\n await sqlite.execute({sql:`INSERT INTO morgan_quant_market_snapshots(captured_at,asset,source_a,price_a,source_b,price_b,reference_price,relative_diff,bid,ask,spread_bps,data_status,evidence) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)`,args:[now,a.symbol,'Coinbase Exchange',cb.value?.price??null,'Kraken',kr.value?.price??null,m?.price??null,m?.relative_diff??null,m?.bid??null,m?.ask??null,m?.spread_bps??null,m?.verified?'VERIFIED':m?'CONFLICT':'UNAVAILABLE',JSON.stringify({coinbase:cb.status,kraken:kr.status,quote_validation:'POSITIVE_FINITE_UNCROSSED_PER_VENUE',spread_basis:'MAX_WITHIN_VENUE_SPREAD',execution_quote_venue:'Coinbase Exchange',accelerator:collected.skill.skill_version,metrics:collected.metrics})]});\n if(m)out.push(m);\n }\n return out;\n}\nexport async function candles(asset:string,granularity=3600){\n const row=ASSETS.find(x=>x.symbol===asset);if(!row)throw Error('UNSUPPORTED_ASSET');\n const r=await fetch(`https://api.exchange.coinbase.com/products/${row.cb}/candles?granularity=${granularity}`,{headers:{accept:'application/json'},signal:AbortSignal.timeout(8000),redirect:'error'});\n if(!r.ok)throw Error(`CANDLES_${asset}_HTTP_${r.status}`);\n const j=await 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