0hmX/am3352

scripts/experiment-ddr-cpu-d11-d13-swap.ts

/** Exact isolated retirement plus existing retained-via winding; never publishes a router solution by hand. */
import {readFileSync,writeFileSync,mkdirSync} from 'node:fs'
import {resolve} from 'node:path'
import {objectHash as hash} from './improve-ddr-a9-power-launches'
import {verifyDdrCapture} from './ddr-capture-provenance'
const [parentArg='dist/ddr-twenty-d15-power57',outArg='dist/ddr-cpu-d11-d13-swap']=process.argv.slice(2),parent=resolve(parentArg),out=resolve(outArg),capture='dist/ddr-system/host-taps-54af3e346b5e',read=(p:string)=>JSON.parse(readFileSync(p,'utf8')),{captureHash}=verifyDdrCapture(capture),original=read(parent+'/candidate.circuit.json'),report=read(parent+'/report.json'),hosts=read(parent+'/host-bundle.json'),input=read(parent+'/routing-input.json'),budget=read(parent+'/current-byte-budgets.json')
if(hash(original)!==report.candidateCircuitSha256||hash(hosts.traces)!==report.hostTracesSha256||hosts.traces.length!==20)throw Error('Parent identity differs')
const removed=hosts.traces.filter((t:any)=>t.source_trace_id==='source_trace_689');if(removed.length!==1)throw Error('Expected one D11 host')
const retained=hosts.traces.filter((t:any)=>!removed.includes(t)),replacements=['source_trace_332','source_trace_334'].map(source=>{const before=original.find((t:any)=>t.type==='pcb_trace'&&t.source_trace_id===source);if(!before||before.route.filter((p:any)=>p.route_type==='via').length!==1)throw Error('Expected exact single retained via');const i=before.route.findIndex((p:any)=>p.route_type==='via');return{before,after:{...before,route:before.route.slice(0,i+1)}}})
const initial=original.filter((e:any)=>!removed.some((t:any)=>hash(t)===hash(e))).map((e:any)=>replacements.find(r=>hash(r.before)===hash(e))?.after??e)
const write=(dir:string,n:string,v:any)=>{mkdirSync(dir,{recursive:true});writeFileSync(dir+'/'+n,JSON.stringify(v,null,2)+'\n')}
const scaffold=(dir:string,c:any[],prevDir:string,prev:any[],connections:any[])=>{const rep=prev.filter(e=>c.some(q=>q.type===e.type&&q[`${e.type}_id`]===e[`${e.type}_id`]&&hash(q)!==hash(e))).map(before=>({before,after:c.find(q=>q.type===before.type&&q[`${before.type}_id`]===before[`${before.type}_id`])})),rem=prev.filter(e=>!c.some(q=>q.type===e.type&&q[`${e.type}_id`]===e[`${e.type}_id`])),manifest={captureHash,parentDirectory:prevDir,parentCircuitSha256:hash(prev),candidateCircuitSha256:hash(c),replacements:rep,removals:rem};write(dir,'candidate.circuit.json',c);write(dir,'host-bundle.json',{...hosts,traces:retained});write(dir,'routing-input.json',{...input,traces:retained,connections});write(dir,'original-copper-replacements.json',manifest);write(dir,'report.json',{captureHash,candidateCircuitSha256:hash(c),hostTracesSha256:hash(retained),originalCopperReplacementsSha256:hash(manifest),scope:'Explicit temporary CPU tail retirement and D11 host invalidation; only19 retained hosts. Local-only experiment, not accepted board.'});write(dir,'current-byte-budgets.json',{...budget,candidateCircuitSha256:hash(c),scope:'Inherited nominal policy only; source lengths are recomputed by the local experiment, not current completeness evidence.'})}
scaffold(out+'/retired',initial,parent,original,input.connections)
let current=out+'/retired',c=initial
const stages=[['DDR_D13','-1.2','inner6'],['DDR_D11','-.4','inner4']];if(process.argv.includes('--reverse'))stages.reverse();let acceptedStages=0;for(const [signal,y,layer]of stages){const dest=out+'/'+signal;const p=Bun.spawn(['bun','scripts/plan-ddr-d13-cpu-facing-exit.ts',capture,current,dest,y,layer,signal,'--local-only',...(process.argv.includes('--pad-aligned')?['--pad-aligned']:[])],{stdout:'inherit',stderr:'inherit'});const code=await p.exited;if(code!==0){write(out,'report.json',{captureHash,accepted:false,failedStage:signal,parentCandidateSha256:hash(original),retiredHostHashes:removed.map(hash),retainedHostCount:19,diagnostic:dest});process.exitCode=1;break}const next=read(dest+'/candidate.circuit.json'),connections=read(dest+'/routing-input.json').connections;scaffold(dest+'/prepared',next,current,c,connections);current=dest+'/prepared';c=next;write(out,'report.json',{captureHash,acceptedLocalStages:++acceptedStages,parentCandidateSha256:hash(original),retainedHostCount:19,latest:current,scope:'Local-only proposal; D11 host invalidated and D13 host missing. Not an accepted20-host board.'})}
if(hash(read(parent+'/candidate.circuit.json'))!==hash(original))throw Error('Parent mutated')