{
  "concept": "7H",
  "artifact": "post-change-comparison",
  "capturedOn": "2026-09-23",
  "baselineArtifact": "concept-7h-pre-change-baseline.json",
  "repositoryState": {
    "workingTree": "dirty",
    "baselineTreatment": "Pre-existing uncommitted Concept 7G work was preserved and treated as the Concept 7H baseline.",
    "commitCreated": false
  },
  "disclosure": {
    "presentationTiers": ["planning", "advanced", "research_reference"],
    "controlCount": 190,
    "tierCounts": { "planning": 33, "advanced": 46, "research_reference": 111 },
    "disclosureState": "ephemeral UI-only state",
    "disclosureFieldInScenarioRevision": false,
    "disclosureFieldInRunSnapshot": false,
    "disclosureFieldInFingerprint": false,
    "newRoute": false,
    "newTopLevelShellStage": false
  },
  "drawerDensity": {
    "viewport": { "width": 1440, "height": 960 },
    "propagation": { "scrollHeightBeforePx": 2451, "scrollHeightAfterPx": 791, "reductionPercent": 67.7, "simultaneouslyVisibleControlsBefore": 38, "simultaneouslyVisibleControlsAfter": 5, "researchSectionsBefore": 2, "researchSectionsAfter": 0 },
    "rfDiagnostics": { "scrollHeightBeforePx": 2657, "scrollHeightAfterPx": 791, "reductionPercent": 70.2, "visibleResearchSectionsBefore": 3, "visibleResearchSectionsAfter": 0 },
    "data": { "scrollHeightBeforePx": 1838, "scrollHeightAfterPx": 852, "reductionPercent": 53.6, "visibleDataGroupsBefore": 4, "openPlanningGroupsAfter": 1 }
  },
  "productionBundle": {
    "before": {
      "javascriptBytes": 946230,
      "javascriptGzipBytes": 259280,
      "cssBytes": 148050,
      "cssGzipBytes": 28110
    },
    "after": {
      "javascriptBytes": 957780,
      "javascriptGzipBytes": 263000,
      "cssBytes": 151600,
      "cssGzipBytes": 28750
    },
    "delta": {
      "javascriptBytes": 11550,
      "javascriptPercent": 1.22,
      "javascriptGzipBytes": 3720,
      "javascriptGzipPercent": 1.43,
      "cssBytes": 3550,
      "cssPercent": 2.4,
      "cssGzipBytes": 640,
      "cssGzipPercent": 2.28
    },
    "viteLargeChunkWarning": true,
    "lazyLoadingImplemented": false,
    "performanceImprovementClaimed": false
  },
  "behavioralInvariance": {
    "requestPayloadBuilderCodeChanged": false,
    "backendRfCodeChanged": false,
    "optimizerMathOrPolicyChanged": false,
    "scenarioRevisionOrAtomScenarioSchemaChanged": false,
    "runSnapshotOrReportBindingChanged": false,
    "disclosureOnlyResultInvalidation": false,
    "hiddenRfEditStillInvalidates": true,
    "verifiedBy": [
      "2.6 GHz App workflow request after disclosure collapse/reopen",
      "existing 2.6/28 simulation and interference/optimization request-equivalence tests",
      "existing building-entry and isolated-reference request payload tests",
      "existing domain serialization, fingerprint, Run, and Report-source tests",
      "backend Go vet and race tests"
    ],
    "measurementQualification": "The 7H code path is presentation-only and request/persistence builders are unchanged. No separate byte-for-byte replay of every baseline UI workflow was performed."
  },
  "profileAndResearchBoundaries": {
    "research140GhZCanonical": false,
    "research140GHzProductionCalibrated": false,
    "radioQualityAt140GHz": "UNSUPPORTED",
    "p1411AutomaticallyAddedToCanonicalLoss": false,
    "p526PathProfileAddedToUMa": false,
    "researchPanelInputsPersistedInScenarioVersion": false,
    "researchPanelPersistenceSemanticsChanged": false
  },
  "nextPhase": {
    "recommendation": "Safe Feature Lazy Loading / bundle splitting",
    "evidence": "The largest production JS chunk is 957.78 kB minified and retains the >500 kB Vite warning. 7H improves task density but does not lower bundle size.",
    "candidateBoundaries": ["Research/reference panels", "Reports", "Experiments/Pareto", "Core Lab"],
    "gate": "Measure initial-load impact and prove request/result state continuity before implementing splits."
  }
}