{
  "base": "53baf62fdaf9dae6824bc9c5a0da812a64b95d6c",
  "instrumentationPatch": "--- a/packages/runner/src/cfc/prepare.ts\n+++ b/packages/runner/src/cfc/prepare.ts\n@@ -5562,6 +5562,7 @@\n    */\n   sources: readonly ConsumedAtomSource[];\n } => {\n+  tx.noteCfcConsumedLabelWalk?.();\n   const atoms: unknown[] = [];\n   const modulePolicySpaces = new Map<string, Set<MemorySpace>>();\n   const sources: ConsumedAtomSource[] = [];\n--- a/packages/runner/src/runtime.ts\n+++ b/packages/runner/src/runtime.ts\n@@ -831,6 +831,13 @@\n   dereferenceTracesRecorded: number;\n \n   dereferenceTracesMax: number;\n+\n+  /** Structured refusal details recorded across transaction prepares. */\n+  refusalDetailsRecorded: number;\n+\n+  /** Full consumed-label collections, including sink and host release checks. */\n+  consumedLabelWalks: number;\n+\n   cfcPreparedTx: number;\n   cfcPrepareRejects: number;\n   cfcDigestInvalidations: number;\n@@ -876,6 +883,8 @@\n   flowLabelProbeMemoHits: 0,\n   dereferenceTracesRecorded: 0,\n   dereferenceTracesMax: 0,\n+  refusalDetailsRecorded: 0,\n+  consumedLabelWalks: 0,\n   cfcPreparedTx: 0,\n   cfcPrepareRejects: 0,\n   cfcDigestInvalidations: 0,\n@@ -2308,6 +2317,12 @@\n       },\n       onPreparedTx: () => {\n         this.#cfcStats.cfcPreparedTx += 1;\n+      },\n+      onRefusalDetail: () => {\n+        this.#cfcStats.refusalDetailsRecorded += 1;\n+      },\n+      onConsumedLabelWalk: () => {\n+        this.#cfcStats.consumedLabelWalks += 1;\n       },\n       onPrepareReject: (refusal) => {\n         this.#cfcStats.cfcPrepareRejects += 1;\n--- a/packages/runner/src/storage/extended-storage-transaction.ts\n+++ b/packages/runner/src/storage/extended-storage-transaction.ts\n@@ -211,6 +211,12 @@\n \n   onPreparedTx?(): void;\n \n+  /** One structured refusal detail was recorded. Measurement only. */\n+  onRefusalDetail?(): void;\n+\n+  /** One full consumed-label collection was started. Measurement only. */\n+  onConsumedLabelWalk?(): void;\n+\n   /** One dereference trace was recorded, and how many the transaction holds\n    * after it. `probeBelongsToDereference` scans this set once per read\n    * activity at commit preparation, so its size is a per-read multiplier.\n@@ -1999,6 +2005,12 @@\n     // this transaction already made; letting it move the enforcement state\n     // would make the description part of the decision.\n     this.#cfcState.refusalDetails.push(deepFreeze(detail));\n+    this.#cfcInstrumentation.onRefusalDetail?.();\n+  }\n+\n+  /** @inheritDoc */\n+  noteCfcConsumedLabelWalk(): void {\n+    this.#cfcInstrumentation.onConsumedLabelWalk?.();\n   }\n \n   writeCfcGrant(input: CfcGrantWriteInput): { space: MemorySpace; id: string } {\n@@ -3946,6 +3958,11 @@\n     this.#wrapped.recordCfcRefusalDetail(detail);\n   }\n \n+  /** @inheritDoc */\n+  noteCfcConsumedLabelWalk(): void {\n+    this.#wrapped.noteCfcConsumedLabelWalk();\n+  }\n+\n   writeCfcGrant(input: CfcGrantWriteInput): { space: MemorySpace; id: string } {\n     return this.#wrapped.writeCfcGrant(input);\n   }\n--- a/packages/runner/src/storage/interface.ts\n+++ b/packages/runner/src/storage/interface.ts\n@@ -2234,6 +2234,9 @@\n    */\n   recordCfcRefusalDetail(detail: CfcRefusalDetail): void;\n \n+  /** Counts a full consumed-label collection without changing CFC state. */\n+  noteCfcConsumedLabelWalk(): void;\n+\n   /**\n    * The trusted policy-writer path for CFC grant documents (\u00a78.12.7 route\n    * 2a; cfc/grants.ts module doc). Requires the transaction's CURRENT\n",
  "optimizationPatch": "--- a/packages/runner/src/cfc/prepare.ts\n+++ b/packages/runner/src/cfc/prepare.ts\n@@ -6337,9 +6337,10 @@\n   // Read provenance for a refusal's remedy channel, computed only if a gate\n   // below actually refuses. `collectConsumedLabel` walks every read against\n   // every label-map entry of the document it resolved to, which is work no\n-  // committing transaction should do just in case; a misfit is rare and pays\n-  // for it then. The set is transaction-global \u2014 wider than the per-write\n-  // prefix the writer-fit decision itself runs on \u2014 so a named input is a\n+  // committing transaction should do just in case. Strict writer-fit refusals\n+  // pay for it; persist-and-flag diagnostics need only the atoms. The set is\n+  // transaction-global \u2014 wider than the per-write prefix the writer-fit\n+  // decision itself runs on \u2014 so a named input is a\n   // read that genuinely carried the atom, while `attribution` stays the\n   // honest statement of whether the named ones account for all of them.\n   let memoizedRefusalSources: readonly ConsumedAtomSource[] | undefined;\n@@ -7632,19 +7633,19 @@\n                 path.join(\"/\")\n               } (canWrite, \u00a78.12.4): ` +\n               offendingAtoms.join(\", \");\n-            tx.recordCfcRefusalDetail?.({\n-              gate: \"writer-fit\",\n-              target: {\n-                space: target.space,\n-                id,\n-                scope: target.scope,\n-                path: [...path],\n-              } as CfcAddress,\n-              offendingAtoms,\n-              ...describeRefusalInputs(offending, refusalSources()),\n-              reason: misfit,\n-            });\n             if (writerFitRejects) {\n+              tx.recordCfcRefusalDetail?.({\n+                gate: \"writer-fit\",\n+                target: {\n+                  space: target.space,\n+                  id,\n+                  scope: target.scope,\n+                  path: [...path],\n+                } as CfcAddress,\n+                offendingAtoms,\n+                ...describeRefusalInputs(offending, refusalSources()),\n+                reason: misfit,\n+              });\n               reasons.push(verdictReason(misfit));\n             } else {\n               tx.noteCfcDiagnostic(`writer-fit(persist-and-flag): ${misfit}`);\n",
  "harnessPatch": "--- a/packages/cli/lib/test-runner.ts\n+++ b/packages/cli/lib/test-runner.ts\n@@ -1,3 +1,4 @@\n+import { recordError } from \"../../../.writer-fit-profile.ts\";\n /**\n  * Test runner for pattern-native tests.\n  *\n@@ -1146,7 +1147,7 @@\n       // pattern tests act as a regression net for CFC without this site\n       // restating the production default. Params below are this harness's\n       // declared deltas.\n-      new Runtime(runtimePresets.patternTest({\n+      new Runtime({...runtimePresets.patternTest({\n         apiUrl: new URL(import.meta.url),\n         storageManager,\n         experimental: experimentalOptionsFromEnv(Deno.env.get),\n@@ -1162,7 +1163,7 @@\n         ...(options.storageHost?.onPatternInstantiated !== undefined\n           ? { onPatternInstantiated: options.storageHost.onPatternInstantiated }\n           : {}),\n-        errorHandlers: [(error: ErrorWithContext) => runtimeErrors.push(error)],\n+        errorHandlers: [(error: ErrorWithContext) => { runtimeErrors.push(error); recordError(error); }],\n         navigateCallback: (target) => {\n           const name = (target.key(\"$NAME\") as Cell<string | undefined>).get();\n           navigations.push({\n@@ -1174,8 +1175,9 @@\n             console.log(`    \u2192 navigateTo: ${label}`);\n           }\n         },\n-      })),\n+      }), cfcFlowLabels: \"persist\"}),\n   );\n+  console.error(\"WRITER_FIT_POSTURE\", runtime.cfcEnforcementMode, runtime.cfcFlowLabels);\n   if (!options.noIdempotencyCheck) runtime.enableIdempotencyCheck();\n   else if (options.verbose) {\n     console.log(\"  Idempotency verification disabled for this measurement.\");\n@@ -1679,6 +1681,10 @@\n         if (isRender) {\n           renderCount++;\n           const renderName = `render_${renderCount}`;\n+          const measure = await import(\"../../../.writer-fit-profile.ts\");\n+          const before = runtime.getCfcStats();\n+          await measure.start();\n+          const renderStart = performance.now();\n           try {\n             if (!stepValue.skip) {\n               await materializeTestVDOM(\n@@ -1690,6 +1696,13 @@\n               console.log(`  \u2298 ${renderName} (skipped)`);\n             }\n           } finally {\n+            const renderMs = performance.now() - renderStart;\n+            await measure.stop(renderName);\n+            const after = runtime.getCfcStats();\n+            console.error(\"WRITER_FIT_RENDER \" + JSON.stringify({\n+              n: [11, 50, 150][renderCount - 1], renderMs,\n+              before, after,\n+            }));\n             printReadCost(renderName, itemStart);\n           }\n           continue;\n@@ -1740,57 +1753,69 @@\n           lastActionIndex = i;\n           currentActionIndex = i;\n           const actionName = `action_${actionCount}`;\n-\n-          if (options.verbose) {\n-            console.log(`  \u2192 Running ${actionName}...`);\n-          }\n-\n-          // Snapshot action stats before running (for delta tracking)\n+          const actionMeasure = await import(\"../../../.writer-fit-profile.ts\");\n+          const actionBefore = runtime.getCfcStats();\n+          await actionMeasure.start();\n+          const actionStart = performance.now();\n+\n           const statsThreshold = options.statsThreshold ?? 5000;\n           let preRunCounts: Map<string, number> | undefined;\n-          if (options.verbose) {\n-            preRunCounts = new Map();\n-            for (const node of runtime.scheduler.getGraphSnapshot().nodes) {\n-              if (node.stats) {\n-                preRunCounts.set(node.id, node.stats.runCount);\n+          try {\n+            if (options.verbose) {\n+              console.log(`  \u2192 Running ${actionName}...`);\n+            }\n+\n+            // Snapshot action stats before running (for delta tracking)\n+            if (options.verbose) {\n+              preRunCounts = new Map();\n+              for (const node of runtime.scheduler.getGraphSnapshot().nodes) {\n+                if (node.stats) {\n+                  preRunCounts.set(node.id, node.stats.runCount);\n+                }\n               }\n             }\n+\n+            // Get the action stream via .key()\n+            const actionStream = await withPhase(\n+              [\"runTestPattern\", \"step\", actionName, \"stream\"],\n+              () => actionStreamForStep(stepCell),\n+            );\n+\n+            // Send the step's event (undefined for plain void actions), wrapped\n+            // with renderer-trusted provenance when the step declares `trustedUi`.\n+            await withPhase(\n+              [\"runTestPattern\", \"step\", actionName, \"send\"],\n+              () => {\n+                actionStream.send(\n+                  buildActionEvent(stepValue.event, stepValue.trustedUi),\n+                );\n+              },\n+            );\n+\n+            // Wait for idle, then settle commits and re-idle.\n+            // Optimistic commits can fail (CAS conflicts), causing rollbacks\n+            // and reactive re-scheduling. We loop idle\u2192synced until both\n+            // resolve quickly (< 1ms), indicating quiescence. Max iterations\n+            // as a safety net against infinite loops.\n+            try {\n+              await settleRuntime(actionName, 20);\n+            } catch (err) {\n+              results.push({\n+                name: actionName,\n+                passed: false,\n+                afterAction: null,\n+                error: err instanceof Error ? err.message : String(err),\n+                durationMs: performance.now() - itemStart,\n+              });\n+            }\n+\n+          } finally {\n+            const actionMs = performance.now() - actionStart;\n+            await actionMeasure.stop(actionName);\n+            console.error(\"WRITER_FIT_ACTION \" + JSON.stringify({\n+              actionName, actionMs, before: actionBefore, after: runtime.getCfcStats(),\n+            }));\n           }\n-\n-          // Get the action stream via .key()\n-          const actionStream = await withPhase(\n-            [\"runTestPattern\", \"step\", actionName, \"stream\"],\n-            () => actionStreamForStep(stepCell),\n-          );\n-\n-          // Send the step's event (undefined for plain void actions), wrapped\n-          // with renderer-trusted provenance when the step declares `trustedUi`.\n-          await withPhase(\n-            [\"runTestPattern\", \"step\", actionName, \"send\"],\n-            () => {\n-              actionStream.send(\n-                buildActionEvent(stepValue.event, stepValue.trustedUi),\n-              );\n-            },\n-          );\n-\n-          // Wait for idle, then settle commits and re-idle.\n-          // Optimistic commits can fail (CAS conflicts), causing rollbacks\n-          // and reactive re-scheduling. We loop idle\u2192synced until both\n-          // resolve quickly (< 1ms), indicating quiescence. Max iterations\n-          // as a safety net against infinite loops.\n-          try {\n-            await settleRuntime(actionName, 20);\n-          } catch (err) {\n-            results.push({\n-              name: actionName,\n-              passed: false,\n-              afterAction: null,\n-              error: err instanceof Error ? err.message : String(err),\n-              durationMs: performance.now() - itemStart,\n-            });\n-          }\n-\n           // Print per-action run deltas for slow actions\n           if (\n             options.verbose && preRunCounts &&\n",
  "strictHarnessPatch": "--- a/packages/cli/lib/writer-fit-strict-runner.ts\n+++ b/packages/cli/lib/writer-fit-strict-runner.ts\n@@ -1422,7 +1422,13 @@\n \n         try {\n           // Run the pattern with proper space context\n-          const value = runtime.run(tx, testPatternFactory, {}, resultCell);\n+          const target = runtime.getCell(space, \"strict-copy-target\", {\n+            type: \"array\",\n+            items: { type: \"object\", properties: { id: {type:\"number\"}, title:{type:\"string\"} } },\n+            ifc: { confidentiality: [\"unrelated-store-policy\"] },\n+          }, tx);\n+          target.set([]);\n+          const value = runtime.run(tx, testPatternFactory, {copied: target}, resultCell);\n \n           // Commit the transaction\n           runtime.prepareTxForCommit?.(tx);\n",
  "files": {
    ".writer-fit-profile.ts": "import { Session } from \"node:inspector\";\nconst enabled = Deno.env.get(\"WRITER_FIT_PROFILE\") === \"1\";\nconst session = new Session();\nif (enabled) session.connect();\nconst post = (method: string, params = {}) => new Promise<any>((resolve, reject) => session.post(method, params, (err, result) => err ? reject(err) : resolve(result)));\nexport async function start() {\n  if (!enabled) return;\n  await post(\"Profiler.enable\");\n  await post(\"Profiler.setSamplingInterval\", { interval: 500 });\n  await post(\"Profiler.start\");\n}\nexport async function stop(name: string) {\n  if (!enabled) return;\n  const { profile } = await post(\"Profiler.stop\");\n  await Deno.writeTextFile(Deno.env.get(\"WRITER_FIT_OUT\") + \"-\" + name + \".cpuprofile\", JSON.stringify(profile));\n}\n\nexport const errors: unknown[] = [];\nexport function recordError(error: any) { errors.push({name:error.name, message:error.message, refusals:error.refusals}); }\n",
    ".writer-fit-run.ts": "import { runTestPattern } from \"./packages/cli/lib/test-runner.ts\";\nconst result = await runTestPattern((Deno.env.get(\"WRITER_FIT_MODE\") === \"enforce-strict\" ? './packages/cli/test/fixtures/cfc-flow-labels/strict.test.tsx' : './packages/cli/test/fixtures/cfc-flow-labels/mapped-render.test.tsx'), {\n  cfcEnforcementMode: (Deno.env.get(\"WRITER_FIT_MODE\") ?? \"enforce-explicit\") as any, noIdempotencyCheck: Deno.env.get(\"WRITER_FIT_IDEMPOTENCY\") !== \"1\",\n});\nconsole.error(\"WRITER_FIT_RESULT \" + JSON.stringify(result));\nconst { errors } = await import(\"./.writer-fit-profile.ts\");\nconsole.error(\"WRITER_FIT_ERRORS \" + JSON.stringify(errors));\nif (Deno.env.get(\"WRITER_FIT_MODE\") === \"enforce-strict\") {\n  const details = errors.flatMap((error:any) => error.refusals ?? []);\n  if (!details.length || details.some((detail:any) => detail.gate !== \"writer-fit\" || !detail.inputs?.length || detail.attribution !== \"complete\" || !detail.reason.includes(\"writer-fit confidentiality misfit\"))) throw new Error(\"Strict detail invariant failed\");\n  console.error(\"WRITER_FIT_STRICT_VERIFIED \" + details.length);\n  Deno.exit(0);\n}\nDeno.exit(result.error || result.runtimeErrors.length || result.results.some(r => !r.passed) ? 1 : 0);\n",
    ".writer-fit-strict-run.ts": "import { runTestPattern } from \"./packages/cli/lib/writer-fit-strict-runner.ts\";\nconst result = await runTestPattern((Deno.env.get(\"WRITER_FIT_MODE\") === \"enforce-strict\" ? './packages/cli/test/fixtures/cfc-flow-labels/strict.test.tsx' : './packages/cli/test/fixtures/cfc-flow-labels/mapped-render.test.tsx'), {\n  cfcEnforcementMode: (Deno.env.get(\"WRITER_FIT_MODE\") ?? \"enforce-explicit\") as any, noIdempotencyCheck: Deno.env.get(\"WRITER_FIT_IDEMPOTENCY\") !== \"1\",\n});\nconsole.error(\"WRITER_FIT_RESULT \" + JSON.stringify(result));\nconst { errors } = await import(\"./.writer-fit-profile.ts\");\nconsole.error(\"WRITER_FIT_ERRORS \" + JSON.stringify(errors));\nDeno.exit(0);\n",
    "packages/cli/test/fixtures/cfc-flow-labels/mapped-render.test.tsx": "/**\n * Labeled SQLite mapped-render scaling fixture. Each render demands the full\n * mapped view at the named row count; seeding precedes the render intervals.\n * Run the same file with --cfc-enforcement-mode disabled --cfc-flow-labels off\n * and with --cfc-shell-posture, adding --verbose --stats-threshold 0 to both.\n */\nimport {\n  action,\n  assert,\n  pattern,\n  sqliteDatabase,\n  type SqliteDb,\n  table,\n  TESTS,\n  UI,\n  Writable,\n} from \"commonfabric\";\n\ninterface Row {\n  id: number;\n  title: string;\n}\n\nconst MappedRows = pattern<{ db: SqliteDb; count: number }>(({ db, count }) => {\n  const query = db.query<Row>(\n    \"SELECT id, title FROM messages ORDER BY id LIMIT ?\",\n    { params: [count] },\n  );\n  return {\n    query,\n    [UI]: <div>{query.result?.map((row) => <p>{row.title}</p>)}</div>,\n  };\n});\n\nexport default pattern(() => {\n  const db = sqliteDatabase({\n    tables: {\n      messages: table({\n        id: \"integer primary key\",\n        title: {\n          type: \"string\",\n          sqlType: \"text\",\n          ifc: { confidentiality: [\"fixture-private\"] },\n        },\n      }),\n    },\n  });\n  const seed = action(() => {\n    for (let i = 1; i <= 150; i++) {\n      db.exec(\"INSERT INTO messages (id, title) VALUES (?, ?)\", [\n        i,\n        `Message ${i}`,\n      ]);\n    }\n  });\n  const small = MappedRows({ db, count: 11 });\n  const medium = MappedRows({ db, count: 50 });\n  const large = MappedRows({ db, count: 150 });\n\n  const copied = new Writable<Row[]>([]);\n\n  return {\n    small,\n    copied,\n    [TESTS]: [\n      { action: seed },\n      { action: action(() => console.log(\"Mapped render N=11\")) },\n      { assertion: assert(() => small.query.result?.length === 11) },\n      { render: small[UI] },\n      {\n        action: action(() => {\n          console.log(\"Labeled copy N=11\");\n          copied.set((small.query.result ?? []).map((row: Row) => ({\n            id: row.id,\n            title: row.title,\n          })));\n        }),\n      },\n      { assertion: assert(() => copied.get().length === 11) },\n      { action: action(() => console.log(\"Mapped render N=50\")) },\n      { assertion: assert(() => medium.query.result?.length === 50) },\n      { render: medium[UI] },\n      {\n        action: action(() => {\n          console.log(\"Labeled copy N=50\");\n          copied.set((medium.query.result ?? []).map((row: Row) => ({\n            id: row.id,\n            title: row.title,\n          })));\n        }),\n      },\n      { assertion: assert(() => copied.get().length === 50) },\n      { action: action(() => console.log(\"Mapped render N=150\")) },\n      { assertion: assert(() => large.query.result?.length === 150) },\n      { render: large[UI] },\n      {\n        action: action(() => {\n          console.log(\"Labeled copy N=150\");\n          copied.set((large.query.result ?? []).map((row: Row) => ({\n            id: row.id,\n            title: row.title,\n          })));\n        }),\n      },\n      { assertion: assert(() => copied.get().length === 150) },\n      { settle: true },\n    ],\n  };\n});\n",
    "packages/cli/test/fixtures/cfc-flow-labels/strict.test.tsx": "/**\n * Labeled SQLite mapped-render scaling fixture. Each render demands the full\n * mapped view at the named row count; seeding precedes the render intervals.\n * Run the same file with --cfc-enforcement-mode disabled --cfc-flow-labels off\n * and with --cfc-shell-posture, adding --verbose --stats-threshold 0 to both.\n */\nimport {\n  type Confidential,\n  type Default,\n  action,\n  assert,\n  pattern,\n  sqliteDatabase,\n  type SqliteDb,\n  table,\n  TESTS,\n  UI,\n  Writable,\n} from \"commonfabric\";\n\ninterface Row {\n  id: number;\n  title: string;\n}\n\nconst MappedRows = pattern<{ db: SqliteDb; count: number }>(({ db, count }) => {\n  const query = db.query<Row>(\n    \"SELECT id, title FROM messages ORDER BY id LIMIT ?\",\n    { params: [count] },\n  );\n  return {\n    query,\n    [UI]: <div>{query.result?.map((row) => <p>{row.title}</p>)}</div>,\n  };\n});\n\nexport default pattern<{ copied: Writable<Confidential<Row[], [\"unrelated-store-policy\"]> | Default<[]>> }>(({ copied }) => {\n  const db = sqliteDatabase({\n    tables: {\n      messages: table({\n        id: \"integer primary key\",\n        title: {\n          type: \"string\",\n          sqlType: \"text\",\n          ifc: { confidentiality: [\"fixture-private\"] },\n        },\n      }),\n    },\n  });\n  const seed = action(() => {\n    for (let i = 1; i <= 150; i++) {\n      db.exec(\"INSERT INTO messages (id, title) VALUES (?, ?)\", [\n        i,\n        `Message ${i}`,\n      ]);\n    }\n  });\n  const small = MappedRows({ db, count: 11 });\n  const medium = MappedRows({ db, count: 50 });\n  const large = MappedRows({ db, count: 150 });\n\n\n\n  return {\n    small,\n    copied,\n    [TESTS]: [\n      { action: seed },\n      { action: action(() => console.log(\"Mapped render N=11\")) },\n      { assertion: assert(() => small.query.result?.length === 11) },\n      { render: small[UI] },\n      {\n        action: action(() => {\n          console.log(\"Labeled copy N=11\");\n          copied.set((small.query.result ?? []).map((row: Row) => ({\n            id: row.id,\n            title: row.title,\n          })));\n        }),\n      },\n      { assertion: assert(() => copied.get().length === 11) },\n      { action: action(() => console.log(\"Mapped render N=50\")) },\n      { assertion: assert(() => medium.query.result?.length === 50) },\n      { render: medium[UI] },\n      {\n        action: action(() => {\n          console.log(\"Labeled copy N=50\");\n          copied.set((medium.query.result ?? []).map((row: Row) => ({\n            id: row.id,\n            title: row.title,\n          })));\n        }),\n      },\n      { assertion: assert(() => copied.get().length === 50) },\n      { action: action(() => console.log(\"Mapped render N=150\")) },\n      { assertion: assert(() => large.query.result?.length === 150) },\n      { render: large[UI] },\n      {\n        action: action(() => {\n          console.log(\"Labeled copy N=150\");\n          copied.set((large.query.result ?? []).map((row: Row) => ({\n            id: row.id,\n            title: row.title,\n          })));\n        }),\n      },\n      { assertion: assert(() => copied.get().length === 150) },\n      { settle: true },\n    ],\n  };\n});\n"
  },
  "strictInstrumentationPatch": "--- a/packages/runner/src/runtime.ts\n+++ b/packages/runner/src/runtime.ts\n@@ -2325,6 +2325,7 @@\n         this.#cfcStats.consumedLabelWalks += 1;\n       },\n       onPrepareReject: (refusal) => {\n+        console.error(\"WRITER_FIT_REFUSAL \" + JSON.stringify(refusal));\n         this.#cfcStats.cfcPrepareRejects += 1;\n         // Every refusal is reported here, terminal or not. The scheduler's\n         // error channel carries only the terminal ones (a refusal a fresh\n",
  "fixtureSha256": "f5b1b159ff6ccb98174931ef8a2553adb6de80cf8868aba42c6e849a0ea7edc0"
}