Restore cost totals and per-task accounting after Dataset migration

Resolve cost-record evidence paths using the same pinned Dataset root as episode data in both current and archived views. Restore totals, task costs, per-task means and CSV exports while preserving signature validation, experiment results and Dataset evidence.

app.js

@@ -497,7 +497,7 @@ document.querySelectorAll('[data-result-file]').forEach(link=>{link.href=resultU
 const r=await fetch(resultURL('data.json'));if(!r.ok)throw Error('HTTP '+r.status);data=resolveEvidence(await r.json());
 const ir=await fetch(resultURL('measured-instructions.json'));if(!ir.ok)throw Error('Instruction evidence unavailable');measuredInstructions=resolveEvidence(await ir.json());
 const nr=await fetch(resultURL('instruction-audit.json'));if(!nr.ok)throw Error('Instruction audit unavailable');catalogInstructionAudit=resolveEvidence(await nr.json());
-try{const c=await fetch(resultURL('cost-data.json'));if(c.ok)UsageMetrics.init(await c.json());}catch{UsageMetrics.init({episodes:{},sources:[]});}
+try{const c=await fetch(resultURL('cost-data.json'));if(c.ok)UsageMetrics.init(resolveEvidence(await c.json()));}catch{UsageMetrics.init({episodes:{},sources:[]});}
 for(const task of data.tasks){
   if(task.family==='task02'){
     const {suite_name,task_id}=task.native_identity;

history-app.js

@@ -490,7 +490,7 @@ document.querySelectorAll('[data-result-file]').forEach(link=>{link.href=resultU
 const r=await fetch(resultURL('data.json'));if(!r.ok)throw Error('HTTP '+r.status);data=resolveEvidence(await r.json());
 const ir=await fetch(resultURL('measured-instructions.json'));if(!ir.ok)throw Error('Instruction evidence unavailable');measuredInstructions=resolveEvidence(await ir.json());
 const nr=await fetch(resultURL('instruction-audit.json'));if(!nr.ok)throw Error('Instruction audit unavailable');catalogInstructionAudit=resolveEvidence(await nr.json());
-try{const c=await fetch(resultURL('cost-data.json'));if(c.ok)UsageMetrics.init(await c.json());}catch{UsageMetrics.init({episodes:{},sources:[]});}
+try{const c=await fetch(resultURL('cost-data.json'));if(c.ok)UsageMetrics.init(resolveEvidence(await c.json()));}catch{UsageMetrics.init({episodes:{},sources:[]});}
 for(const task of data.tasks){
   if(task.family==='task02'){
     const {suite_name,task_id}=task.native_identity;

history.html

@@ -9,7 +9,7 @@
 <link rel="icon" href="icon.svg" type="image/svg+xml">
 <link rel="stylesheet" href="style.css?v=30978a82c360">
 <script src="usage-metrics.js?v=330e92f8eb96" defer></script>
-<script src="history-app.js?v=5c596822748d" defer></script>
+<script src="history-app.js?v=31a39183c663" defer></script>
 <link rel="stylesheet" href="policy.css">
 </head>
 <body>

index.html

@@ -9,7 +9,7 @@
 <link rel="icon" href="icon.svg" type="image/svg+xml">
 <link rel="stylesheet" href="style.css?v=bd1a59147e1d">
 <script src="usage-metrics.js?v=330e92f8eb96" defer></script>
-<script src="app.js?v=0d713716a219" defer></script>
+<script src="app.js?v=07f7896f4cd0" defer></script>
 <link rel="stylesheet" href="policy.css">
 </head>
 <body>

manifest.json

@@ -15,8 +15,8 @@
       "sha256": "841e3cf4bad28e94696efe819b48c0b6fbf7448ee1d9a4e03f16fda4a8a8f48d"
     },
     "app.js": {
-      "bytes": 94504,
-      "sha256": "4440e73cdb5c07d2ab36c9186ba105228521681592230e8be11c30c9c984b45d"
+      "bytes": 94521,
+      "sha256": "07f7896f4cd07f54b8ba5c616d075ac0b3fb0328d49a1321bdb305ec9dd6a11f"
     },
     "assets/anthropic-logo.svg": {
       "bytes": 352,
@@ -47,12 +47,12 @@
       "sha256": "be65ec2dbbd2449a0236c9636a112e3b6112e40699c8820d44a159c30ee536dd"
     },
     "history-app.js": {
-      "bytes": 87065,
-      "sha256": "5c596822748d3ce40893c62803019e19b20c1e3b1985862c7ef1b5a5b5c84502"
+      "bytes": 87082,
+      "sha256": "31a39183c6636b5cb9f21e209d1f834757967983d1d0a6e1e59a0bae5ef7a2f8"
     },
     "history.html": {
       "bytes": 3298,
-      "sha256": "d382c93e88a786a898f7ba74704f57b8c6b3be871e61ace13d0cc40fa891b9c8"
+      "sha256": "8b0691838063224bce2a991d7bb0672897ef8f51bbc39ce38afb4a67cb6e39d0"
     },
     "icon.svg": {
       "bytes": 725,
@@ -60,7 +60,7 @@
     },
     "index.html": {
       "bytes": 3248,
-      "sha256": "3a75e3821ee63ee6a1e033b4294ee2d1b32c8519ed441dff22d9e29b23c4b5db"
+      "sha256": "f022be45669e0eae5b3db57f5886c1bb10cf3b49d6f5546ff178dc088faf73b7"
     },
     "policy.css": {
       "bytes": 1067,