feat(scanner): complete localized artifact quality checkpoint

electron/services/captureSourceClassifier.ts

@@ -0,0 +1,11 @@
+export function isLikelyGenshinSourceName(sourceName: string) {
+  const normalized = sourceName.trim().toLowerCase();
+  if (!normalized) return false;
+  return (
+    normalized === "genshin"
+    || /\bgenshin\s*impact\b/.test(normalized)
+    || normalized.includes("genshinimpact")
+    || normalized.includes("yuanshen")
+    || sourceName.includes("\u539f\u795e")
+  );
+}

electron/services/inputHelper.ts

@@ -166,6 +166,18 @@ export interface InputHelperService {
   dispose(): void;
 }
 
+export function automationGuardFromHelperResponse(result: HelperOperationResponse): AutomationGuard {
+  return {
+    ok: true,
+    cursorX: typeof result.cursorX === "number" ? result.cursorX : undefined,
+    cursorY: typeof result.cursorY === "number" ? result.cursorY : undefined,
+    escapePressed: Boolean(result.escapePressed),
+    enterPressed: Boolean(result.enterPressed),
+    f9Pressed: Boolean(result.f9Pressed),
+    isElevated: typeof result.isElevated === "boolean" ? result.isElevated : undefined,
+  };
+}
+
 export function createInputHelperService(options: { userDataPath: string; exePath?: string | null }): InputHelperService {
   const inputHelper = new InputHelperClient({ scriptUserDataPath: options.userDataPath, exePath: options.exePath ?? null });
 
@@ -273,14 +285,7 @@ export function createInputHelperService(options: { userDataPath: string; exePat
 
   async function getAutomationGuard() {
     const result = await request("cursor", {}, 4000);
-    return {
-      ok: true,
-      cursorX: typeof result.cursorX === "number" ? result.cursorX : undefined,
-      cursorY: typeof result.cursorY === "number" ? result.cursorY : undefined,
-      escapePressed: Boolean(result.escapePressed),
-      enterPressed: Boolean(result.enterPressed),
-      f9Pressed: Boolean(result.f9Pressed),
-    };
+    return automationGuardFromHelperResponse(result);
   }
 
   async function capturePrimaryScreenViaGdi() {

electron/services/inputHelperPowerShellFallback.ts

@@ -197,8 +197,12 @@ function Get-GenshinClientBounds {
 }
 
 function Find-GenshinWindow {
-  if ($script:genshinHwnd -ne [IntPtr]::Zero -and [Native.InputHelper]::IsWindow($script:genshinHwnd)) { return $script:genshinHwnd }
-  $proc = Get-Process | Where-Object { $_.ProcessName -match 'GenshinImpact|YuanShen|Genshin' -and $_.MainWindowHandle -ne 0 } | Select-Object -First 1
+  if ($script:genshinHwnd -ne [IntPtr]::Zero -and [Native.InputHelper]::IsWindow($script:genshinHwnd)) {
+    $cachedName = Get-ProcessNameFromHwnd -hwnd $script:genshinHwnd
+    if ($cachedName -in @('GenshinImpact', 'YuanShen')) { return $script:genshinHwnd }
+    $script:genshinHwnd = [IntPtr]::Zero
+  }
+  $proc = Get-Process | Where-Object { $_.ProcessName -in @('GenshinImpact', 'YuanShen') -and $_.MainWindowHandle -ne 0 } | Select-Object -First 1
   if ($proc) { $script:genshinHwnd = $proc.MainWindowHandle } else { $script:genshinHwnd = [IntPtr]::Zero }
   return $script:genshinHwnd
 }
@@ -283,6 +287,7 @@ while ($true) {
         $response.escapePressed = $state.escapePressed
         $response.enterPressed = $state.enterPressed
         $response.f9Pressed = $state.f9Pressed
+        $response.isElevated = Get-CurrentProcessElevation
       }
       "runtime" {
         $response.isElevated = Get-CurrentProcessElevation

electron/services/nativeScannerProcessingService.ts

@@ -2,23 +2,30 @@ import fs from "node:fs/promises";
 import path from "node:path";
 import { pngBufferToBitmap } from "./pngBitmap.js";
 import { createNativeScannerResultWorkflowService } from "./nativeScannerResultWorkflowService.js";
+import { loadNativeScannerDeletedResultIds } from "./nativeScannerResultTombstones.js";
 import { parseArtifactCandidate } from "../../src/lib/artifactOcrParser.js";
+import { evaluateStoredScanResult } from "../../src/lib/artifactEvaluation.js";
 import { toStoredArtifact } from "../../src/lib/artifactStore.js";
 import { matchParsedArtifactToIk, type IkArtifactCatalog } from "../../src/lib/ikArtifactMatcher.js";
 import { createStoredScanResultEntry } from "../../src/lib/scanResultEntry.js";
+import { shouldFlagArtifactForReview } from "../../src/lib/scannerLearning.js";
 import type {
   ArtifactStoreLoadResult,
   ArtifactStoreSaveResult,
   CaptureResult,
   NativeScannerImageLoadStatus,
+  NativeScannerDeleteResultStatus,
   NativeScannerProcessStatus,
+  NativeScannerProcessingProgressStatus,
   NativeScannerPromotionStatus,
   NativeScannerReviewArtifactInput,
   NativeScannerReviewStatus,
   NativeScannerResultsLoadStatus,
+  NativeScannerRunTiming,
+  NativeScannerRunTimingPatch,
   ReviewSamplePayload,
 } from "../../src/types/global.js";
-import type { ScanResultCategory, StoredArtifactRecord, StoredScanResultEntry } from "../../src/types/storage.js";
+import type { ArtifactRarity, ScanResultCategory, StoredArtifactRecord, StoredScanResultEntry } from "../../src/types/storage.js";
 
 export type NativeCaptureJobPayload = {
   sequence: number;
@@ -29,11 +36,21 @@ export type NativeCaptureJobPayload = {
   capturedAt?: string;
   relativePath?: string;
   absolutePath?: string;
+  /** Direct visual evidence from the native card crop; absent on legacy jobs. */
+  starCount?: number | null;
+  starConfidence?: number;
+  starSource?: string | null;
 };
 
 export interface NativeScannerProcessingService {
-  processRun(options?: { runDir?: string; persist?: boolean; limit?: number }): Promise<NativeScannerProcessStatus>;
-  loadResults(options?: { runDir?: string; limit?: number }): Promise<NativeScannerResultsLoadStatus>;
+  processRun(options?: {
+    runDir?: string;
+    persist?: boolean;
+    limit?: number;
+    stream?: boolean;
+    expectedTotal?: number;
+  }): Promise<NativeScannerProcessStatus>;
+  loadResults(options?: { runDir?: string; limit?: number; afterSequence?: number }): Promise<NativeScannerResultsLoadStatus>;
   promoteResults(options: { runDir?: string; resultIds: string[] }): Promise<NativeScannerPromotionStatus>;
   reviewResult(options: {
     runDir?: string;
@@ -42,6 +59,11 @@ export interface NativeScannerProcessingService {
     artifact?: NativeScannerReviewArtifactInput;
     note?: string;
   }): Promise<NativeScannerReviewStatus>;
+  deleteResult(options: {
+    runDir?: string;
+    resultId: string;
+    removeLinkedStoreRecord?: boolean;
+  }): Promise<NativeScannerDeleteResultStatus>;
   loadImage(options: { runDir?: string; imagePath: string }): Promise<NativeScannerImageLoadStatus>;
 }
 
@@ -50,8 +72,14 @@ interface NativeScannerProcessingServiceDependencies {
   buildCaptureResult(imagePath: string, job: NativeCaptureJobPayload): Promise<CaptureResult>;
   loadArtifacts?: () => Promise<ArtifactStoreLoadResult>;
   saveArtifacts(records: StoredArtifactRecord[]): Promise<Pick<ArtifactStoreSaveResult, "added" | "updated"> & Partial<ArtifactStoreSaveResult>>;
+  removeArtifacts?: (ids: string[]) => Promise<{ ok: boolean; removed: number }>;
   saveReviewSample?: (sample: ReviewSamplePayload) => Promise<{ ok: boolean }>;
   loadIkArtifactCatalog?: () => Promise<IkArtifactCatalog | null>;
+  /** Durable timing is observational only and must never block OCR/parse work. */
+  recordRunTiming?: (runDir: string, patch: NativeScannerRunTimingPatch) => Promise<NativeScannerRunTiming>;
+  loadRunTiming?: (runDir: string) => Promise<NativeScannerRunTiming | null>;
+  onProgress?: (progress: NativeScannerProcessingProgressStatus) => void;
+  onResult?: (result: StoredScanResultEntry) => void;
 }
 
 type ProcessedNativeJob = {
@@ -61,70 +89,55 @@ type ProcessedNativeJob = {
 };
 
 const POST_CAPTURE_QUEUE_CONCURRENCY = 4;
+const STREAM_QUEUE_HIGH_WATERMARK = 8;
+const STREAM_READ_CHUNK_BYTES = 64 * 1024;
+const STREAM_POLL_INTERVAL_MS = 40;
+const STREAM_TERMINAL_DRAIN_GRACE_MS = 2_000;
+const MAX_CACHED_LIVE_RUNS = 8;
+
+type ProcessRunOptions = {
+  runDir?: string;
+  persist?: boolean;
+  limit?: number;
+  stream?: boolean;
+  expectedTotal?: number;
+};
+
+type NativeCaptureProducerStatus = {
+  running: boolean;
+  status: string;
+  target: number;
+  captured: number;
+};
+
+const activeProcessingRuns = new Map<string, Promise<NativeScannerProcessStatus>>();
+const liveResultsByRunDir = new Map<string, StoredScanResultEntry[]>();
 
 export function createNativeScannerProcessingService(
   deps: NativeScannerProcessingServiceDependencies,
 ): NativeScannerProcessingService {
-  const resultWorkflows = createNativeScannerResultWorkflowService(deps);
+  const resultWorkflows = createNativeScannerResultWorkflowService({
+    ...deps,
+    isProcessingRunActive: (runDir) => activeProcessingRuns.has(runDir),
+  });
   return {
-    async processRun(options = {}) {
-      const started = Date.now();
+    processRun(options: ProcessRunOptions = {}) {
       const runDir = deps.resolveRunDir(options.runDir);
       if (!runDir) {
-        return emptyProcessStatus("No native scanner runDir available.");
+        return Promise.resolve(emptyProcessStatus("No native scanner runDir available."));
       }
+      const active = activeProcessingRuns.get(runDir);
+      if (active) return active;
 
-      const { jobsPath, jobs } = await readNativeCaptureJobs(runDir);
-      const limit = Math.max(1, Math.min(jobs.length, Math.round(options.limit ?? jobs.length)));
-      const selectedJobs = jobs.slice(0, limit);
-      const runId = path.basename(runDir);
-      const ikCatalog = deps.loadIkArtifactCatalog
-        ? await deps.loadIkArtifactCatalog().catch(() => null)
-        : null;
-
-      const processedJobs = await mapWithConcurrency(
-        selectedJobs,
-        POST_CAPTURE_QUEUE_CONCURRENCY,
-        (job) => processNativeCaptureJob({
-          deps,
-          ikCatalog,
-          job,
-          persist: Boolean(options.persist),
-          runDir,
-          runId,
-        }),
-      );
-      const results = processedJobs.map((entry) => entry.result);
-      const scanResults = processedJobs.map((entry) => entry.scanResult);
-      const recordsToPersist = processedJobs
-        .map((entry) => entry.storedRecord)
-        .filter((record): record is StoredArtifactRecord => Boolean(record));
-
-      let stored = 0;
-      if (options.persist && recordsToPersist.length > 0) {
-        const saved = await deps.saveArtifacts(recordsToPersist);
-        stored = saved.added + saved.updated;
-      }
-
-      const status: NativeScannerProcessStatus = {
-        ok: true,
-        runDir,
-        jobsPath,
-        reportPath: path.join(runDir, "processing-report.json"),
-        scanResultsPath: path.join(runDir, "scan-results.json"),
-        processed: results.length,
-        parsed: results.filter((result) => result.parsed).length,
-        review: results.filter((result) => result.needsReview).length,
-        stored,
-        errors: results.filter((result) => result.error).length,
-        elapsedMs: Date.now() - started,
-        queueConcurrency: Math.min(POST_CAPTURE_QUEUE_CONCURRENCY, selectedJobs.length),
-        persisted: Boolean(options.persist),
-        results,
-      };
-      await fs.writeFile(status.scanResultsPath, JSON.stringify(scanResults, null, 2), "utf8");
-      await fs.writeFile(status.reportPath, JSON.stringify(status, null, 2), "utf8");
-      return status;
+      replaceCachedLiveResults(runDir, []);
+      const runPromise = processNativeScannerRun({ deps, options, runDir })
+        .finally(() => {
+          if (activeProcessingRuns.get(runDir) === runPromise) {
+            activeProcessingRuns.delete(runDir);
+          }
+        });
+      activeProcessingRuns.set(runDir, runPromise);
+      return runPromise;
     },
 
     async loadResults(options = {}) {
@@ -135,20 +148,32 @@ export function createNativeScannerProcessingService(
 
       const resultsPath = path.join(runDir, "scan-results.json");
       try {
-        const raw = await fs.readFile(resultsPath, "utf8");
-        const parsed = JSON.parse(raw);
-        const results = Array.isArray(parsed)
-          ? parsed.filter(isStoredScanResultEntry)
-          : [];
+        const cached = liveResultsByRunDir.get(runDir);
+        const rawResults = cached
+          ? [...cached]
+          : await readStoredScanResults(resultsPath);
+        const deletedIds = await loadNativeScannerDeletedResultIds(runDir);
+        const results = rawResults.filter((entry) => !deletedIds.has(entry.id));
+        const afterSequence = Number.isFinite(options.afterSequence)
+          ? Math.max(0, Math.round(options.afterSequence ?? 0))
+          : null;
+        const candidates = afterSequence === null
+          ? results
+          : results.filter((entry) => entry.sequence > afterSequence);
         const limit = Number.isFinite(options.limit)
-          ? Math.max(1, Math.min(results.length, Math.round(options.limit ?? results.length)))
-          : results.length;
+          ? Math.max(1, Math.min(candidates.length, Math.round(options.limit ?? candidates.length)))
+          : candidates.length;
+        const selectedResults = afterSequence === null
+          ? candidates.slice(-limit)
+          : candidates.slice(0, limit);
+        const timing = await recordResultReconciliationIfComplete(deps, runDir, results);
         return {
           ok: true,
           runDir,
           path: resultsPath,
           total: results.length,
-          results: results.slice(-limit),
+          results: selectedResults,
+          ...(timing ? { timing } : {}),
         };
       } catch (error) {
         return {
@@ -159,8 +184,21 @@ export function createNativeScannerProcessingService(
       }
     },
 
-    promoteResults: resultWorkflows.promoteResults,
-    reviewResult: resultWorkflows.reviewResult,
+    async promoteResults(options) {
+      const status = await resultWorkflows.promoteResults(options);
+      await refreshCachedResultsAfterMutation(deps, options.runDir);
+      return status;
+    },
+    async reviewResult(options) {
+      const status = await resultWorkflows.reviewResult(options);
+      await refreshCachedResultsAfterMutation(deps, options.runDir);
+      return status;
+    },
+    async deleteResult(options) {
+      const status = await resultWorkflows.deleteResult(options);
+      await refreshCachedResultsAfterMutation(deps, options.runDir);
+      return status;
+    },
 
     async loadImage(options) {
       const runDir = deps.resolveRunDir(options.runDir);
@@ -205,6 +243,617 @@ export function createNativeScannerProcessingService(
   };
 }
 
+async function processNativeScannerRun({
+  deps,
+  options,
+  runDir,
+}: {
+  deps: NativeScannerProcessingServiceDependencies;
+  options: ProcessRunOptions;
+  runDir: string;
+}) {
+  await updateRunTiming(deps, runDir, { processingStartedAt: new Date().toISOString() });
+  return options.stream
+    ? processStreamingNativeScannerRun({ deps, options, runDir })
+    : processBatchNativeScannerRun({ deps, options, runDir });
+}
+
+async function processBatchNativeScannerRun({
+  deps,
+  options,
+  runDir,
+}: {
+  deps: NativeScannerProcessingServiceDependencies;
+  options: ProcessRunOptions;
+  runDir: string;
+}): Promise<NativeScannerProcessStatus> {
+  const started = Date.now();
+  const { jobsPath, jobs } = await readNativeCaptureJobs(runDir);
+  const requestedLimit = Number.isFinite(options.limit)
+    ? Math.max(1, Math.round(options.limit ?? jobs.length))
+    : jobs.length;
+  const selectedJobs = jobs.slice(0, Math.min(jobs.length, requestedLimit));
+  const runId = path.basename(runDir);
+  const ikCatalog = deps.loadIkArtifactCatalog
+    ? await deps.loadIkArtifactCatalog().catch(() => null)
+    : null;
+
+  let processedCount = 0;
+  let parsedCount = 0;
+  let reviewCount = 0;
+  let errorCount = 0;
+  const publishProgress = (running: boolean, stored = 0) => safePublishProgress(deps, {
+    running,
+    runDir,
+    total: selectedJobs.length,
+    processed: processedCount,
+    parsed: parsedCount,
+    review: reviewCount,
+    stored,
+    errors: errorCount,
+    elapsedMs: Date.now() - started,
+  });
+  publishProgress(true);
+
+  const processedJobs = await mapWithConcurrency(
+    selectedJobs,
+    POST_CAPTURE_QUEUE_CONCURRENCY,
+    async (job) => {
+      const processedJob = await processNativeCaptureJob({
+        deps,
+        ikCatalog,
+        job,
+        persist: Boolean(options.persist),
+        runDir,
+        runId,
+      });
+      processedCount += 1;
+      if (processedJob.result.parsed) parsedCount += 1;
+      if (processedJob.result.needsReview) reviewCount += 1;
+      if (processedJob.result.error) errorCount += 1;
+      publishProgress(true);
+      return processedJob;
+    },
+  );
+  const scanResults = processedJobs.map((entry) => entry.scanResult);
+  replaceCachedLiveResults(runDir, scanResults);
+  for (const result of scanResults) safePublishResult(deps, result);
+  return finalizeProcessedRun({
+    deps,
+    jobsPath,
+    ok: true,
+    options,
+    processedJobs,
+    runDir,
+    started,
+  });
+}
+
+async function processStreamingNativeScannerRun({
+  deps,
+  options,
+  runDir,
+}: {
+  deps: NativeScannerProcessingServiceDependencies;
+  options: ProcessRunOptions;
+  runDir: string;
+}): Promise<NativeScannerProcessStatus> {
+  const started = Date.now();
+  const runId = path.basename(runDir);
+  const jobsPath = path.join(runDir, "capture-jobs.jsonl");
+  const reportPath = path.join(runDir, "processing-report.json");
+  const scanResultsPath = path.join(runDir, "scan-results.json");
+  const streamLimit = Number.isFinite(options.limit)
+    ? Math.max(1, Math.round(options.limit ?? 1))
+    : Number.POSITIVE_INFINITY;
+  const configuredTotal = Number.isFinite(options.expectedTotal)
+    ? Math.max(0, Math.round(options.expectedTotal ?? 0))
+    : Number.isFinite(options.limit)
+      ? streamLimit
+      : 0;
+  const ikCatalog = deps.loadIkArtifactCatalog
+    ? await deps.loadIkArtifactCatalog().catch(() => null)
+    : null;
+  const tailState: NativeCaptureJobTailState = { offset: 0 };
+  const pendingJobs: NativeCaptureJobPayload[] = [];
+  const orderedSequences: number[] = [];
+  const seenJobsBySequence = new Map<number, string>();
+  const activeJobs = new Map<number, Promise<void>>();
+  const completedBySequence = new Map<number, ProcessedNativeJob>();
+  const publishedJobs: ProcessedNativeJob[] = [];
+  let nextPublishIndex = 0;
+  let processedCount = 0;
+  let parsedCount = 0;
+  let reviewCount = 0;
+  let errorCount = 0;
+  let producerStatus: NativeCaptureProducerStatus | null = null;
+  let terminalObservedAt = 0;
+  let integrityError = "";
+  let snapshotWriteQueue = Promise.resolve();
+
+  const progressTotal = () => {
+    if (producerStatus && !producerStatus.running) {
+      return Math.min(producerStatus.captured, streamLimit);
+    }
+    return configuredTotal
+      || producerStatus?.target
+      || Math.min(orderedSequences.length, streamLimit);
+  };
+  const publishProgress = (running: boolean, stored = 0) => safePublishProgress(deps, {
+    running,
+    runDir,
+    total: progressTotal(),
+    processed: processedCount,
+    parsed: parsedCount,
+    review: reviewCount,
+    stored,
+    errors: errorCount + (integrityError ? 1 : 0),
+    elapsedMs: Date.now() - started,
+    ...(integrityError ? { error: integrityError } : {}),
+  });
+  const queueDurableSnapshot = () => {
+    const snapshot = [...publishedJobs];
+    const status = buildProcessStatus({
+      jobsPath,
+      ok: true,
+      options,
+      processedJobs: snapshot,
+      runDir,
+      started,
+      stored: 0,
+    });
+    snapshotWriteQueue = snapshotWriteQueue
+      .catch(() => undefined)
+      .then(() => writeProcessingOutputs({ reportPath, scanResultsPath, status, processedJobs: snapshot }));
+  };
+  const flushOrderedResults = () => {
+    let published = false;
+    while (nextPublishIndex < orderedSequences.length) {
+      const sequence = orderedSequences[nextPublishIndex];
+      const completed = completedBySequence.get(sequence);
+      if (!completed) break;
+      completedBySequence.delete(sequence);
+      nextPublishIndex += 1;
+      publishedJobs.push(completed);
+      appendCachedLiveResult(runDir, completed.scanResult);
+      safePublishResult(deps, completed.scanResult);
+      published = true;
+    }
+    if (published && (publishedJobs.length === 1 || publishedJobs.length % 8 === 0)) {
+      queueDurableSnapshot();
+    }
+  };
+  const scheduleAvailableJobs = () => {
+    while (activeJobs.size < POST_CAPTURE_QUEUE_CONCURRENCY && pendingJobs.length > 0) {
+      const job = pendingJobs.shift();
+      if (!job) break;
+      const task = processNativeCaptureJob({
+        deps,
+        ikCatalog,
+        job,
+        persist: Boolean(options.persist),
+        runDir,
+        runId,
+      }).then((processedJob) => {
+        processedCount += 1;
+        if (processedJob.result.parsed) parsedCount += 1;
+        if (processedJob.result.needsReview) reviewCount += 1;
+        if (processedJob.result.error) errorCount += 1;
+        completedBySequence.set(job.sequence, processedJob);
+        flushOrderedResults();
+        publishProgress(true);
+      }).finally(() => {
+        activeJobs.delete(job.sequence);
+      });
+      activeJobs.set(job.sequence, task);
+    }
+  };
+
+  publishProgress(true);
+  while (true) {
+    const queueCapacity = Math.max(
+      0,
+      STREAM_QUEUE_HIGH_WATERMARK - pendingJobs.length - activeJobs.size,
+    );
+    const appendedJobs = queueCapacity > 0
+      ? await readAppendedNativeCaptureJobs(jobsPath, tailState, queueCapacity)
+      : [];
+    for (const job of appendedJobs) {
+      const identity = nativeCaptureJobIdentity(job);
+      const existingIdentity = seenJobsBySequence.get(job.sequence);
+      if (existingIdentity) {
+        if (existingIdentity !== identity && !integrityError) {
+          integrityError = `Conflicting capture jobs use sequence ${job.sequence}.`;
+        }
+        continue;
+      }
+      if (orderedSequences.length >= streamLimit) continue;
+      seenJobsBySequence.set(job.sequence, identity);
+      orderedSequences.push(job.sequence);
+      pendingJobs.push(job);
+    }
+    scheduleAvailableJobs();
+
+    const nextProducerStatus = await readNativeCaptureProducerStatus(runDir);
+    if (nextProducerStatus) producerStatus = nextProducerStatus;
+    if (producerStatus && !producerStatus.running && terminalObservedAt === 0) {
+      terminalObservedAt = Date.now();
+    }
+
+    const expectedCapturedJobs = producerStatus && !producerStatus.running
+      ? Math.min(producerStatus.captured, streamLimit)
+      : null;
+    const producerDrained = expectedCapturedJobs !== null
+      && orderedSequences.length >= expectedCapturedJobs;
+    if (producerDrained && pendingJobs.length === 0 && activeJobs.size === 0) break;
+    if (
+      expectedCapturedJobs !== null
+      && terminalObservedAt > 0
+      && Date.now() - terminalObservedAt >= STREAM_TERMINAL_DRAIN_GRACE_MS
+      && pendingJobs.length === 0
+      && activeJobs.size === 0
+    ) {
+      integrityError = `Capture job stream ended with ${orderedSequences.length}/${expectedCapturedJobs} jobs.`;
+      break;
+    }
+
+    if (activeJobs.size > 0) {
+      await Promise.race([
+        Promise.race(activeJobs.values()),
+        delay(STREAM_POLL_INTERVAL_MS),
+      ]);
+    } else {
+      await delay(STREAM_POLL_INTERVAL_MS);
+    }
+  }
+
+  if (activeJobs.size > 0) await Promise.all(activeJobs.values());
+  flushOrderedResults();
+  await snapshotWriteQueue.catch(() => undefined);
+  const status = await finalizeProcessedRun({
+    deps,
+    jobsPath,
+    ok: !integrityError,
+    options,
+    processedJobs: publishedJobs,
+    runDir,
+    started,
+    error: integrityError || undefined,
+  });
+  return status;
+}
+
+async function finalizeProcessedRun({
+  deps,
+  error,
+  jobsPath,
+  ok,
+  options,
+  processedJobs,
+  runDir,
+  started,
+}: {
+  deps: NativeScannerProcessingServiceDependencies;
+  error?: string;
+  jobsPath: string;
+  ok: boolean;
+  options: ProcessRunOptions;
+  processedJobs: ProcessedNativeJob[];
+  runDir: string;
+  started: number;
+}) {
+  const recordsToPersist = processedJobs
+    .map((entry) => entry.storedRecord)
+    .filter((record): record is StoredArtifactRecord => Boolean(record));
+  let stored = 0;
+  if (options.persist && recordsToPersist.length > 0) {
+    const saved = await deps.saveArtifacts(recordsToPersist);
+    stored = saved.added + saved.updated;
+  }
+  const processingTiming = await updateRunTiming(deps, runDir, {
+    processingCompletedAt: new Date().toISOString(),
+  });
+  let status = buildProcessStatus({
+    error,
+    jobsPath,
+    ok,
+    options,
+    processedJobs,
+    runDir,
+    started,
+    stored,
+    timing: processingTiming,
+  });
+  // The complete results file is the durable hand-off boundary. Keep its
+  // timestamp distinct from a later renderer/service reconciliation read.
+  await writeJsonAtomic(status.scanResultsPath, processedJobs.map((entry) => entry.scanResult));
+  const durableTiming = await updateRunTiming(deps, runDir, {
+    resultsDurableAt: new Date().toISOString(),
+  });
+  status = buildProcessStatus({
+    error,
+    jobsPath,
+    ok,
+    options,
+    processedJobs,
+    runDir,
+    started,
+    stored,
+    timing: durableTiming ?? processingTiming,
+  });
+  await writeJsonAtomic(status.reportPath, status);
+  replaceCachedLiveResults(runDir, processedJobs.map((entry) => entry.scanResult));
+  safePublishProgress(deps, {
+    running: false,
+    runDir,
+    total: processedJobs.length,
+    processed: status.processed,
+    parsed: status.parsed,
+    review: status.review,
+    stored: status.stored,
+    errors: status.errors,
+    elapsedMs: status.elapsedMs,
+    ...(status.error ? { error: status.error } : {}),
+  });
+  return status;
+}
+
+function buildProcessStatus({
+  error,
+  jobsPath,
+  ok,
+  options,
+  processedJobs,
+  runDir,
+  started,
+  stored,
+  timing,
+}: {
+  error?: string;
+  jobsPath: string;
+  ok: boolean;
+  options: ProcessRunOptions;
+  processedJobs: ProcessedNativeJob[];
+  runDir: string;
+  started: number;
+  stored: number;
+  timing?: NativeScannerRunTiming;
+}): NativeScannerProcessStatus {
+  const results = processedJobs.map((entry) => entry.result);
+  return {
+    ok,
+    runDir,
+    jobsPath,
+    reportPath: path.join(runDir, "processing-report.json"),
+    scanResultsPath: path.join(runDir, "scan-results.json"),
+    processed: results.length,
+    parsed: results.filter((result) => result.parsed).length,
+    review: results.filter((result) => result.needsReview).length,
+    stored,
+    errors: results.filter((result) => result.error).length + (error ? 1 : 0),
+    elapsedMs: Date.now() - started,
+    queueConcurrency: Math.min(POST_CAPTURE_QUEUE_CONCURRENCY, processedJobs.length),
+    persisted: Boolean(options.persist),
+    results,
+    ...(timing ? { timing } : {}),
+    ...(error ? { error } : {}),
+  };
+}
+
+async function writeProcessingOutputs({
+  processedJobs,
+  reportPath,
+  scanResultsPath,
+  status,
+}: {
+  processedJobs: ProcessedNativeJob[];
+  reportPath: string;
+  scanResultsPath: string;
+  status: NativeScannerProcessStatus;
+}) {
+  await writeJsonAtomic(scanResultsPath, processedJobs.map((entry) => entry.scanResult));
+  await writeJsonAtomic(reportPath, status);
+}
+
+async function writeJsonAtomic(filePath: string, payload: unknown) {
+  const temporaryPath = `${filePath}.tmp-${process.pid}`;
+  await fs.writeFile(temporaryPath, JSON.stringify(payload, null, 2), "utf8");
+  await fs.rename(temporaryPath, filePath);
+}
+
+type NativeCaptureJobTailState = {
+  offset: number;
+};
+
+async function readAppendedNativeCaptureJobs(
+  jobsPath: string,
+  state: NativeCaptureJobTailState,
+  maxJobs: number,
+): Promise<NativeCaptureJobPayload[]> {
+  let handle: Awaited<ReturnType<typeof fs.open>> | null = null;
+  try {
+    handle = await fs.open(jobsPath, "r");
+    const stat = await handle.stat();
+    if (stat.size < state.offset) {
+      state.offset = 0;
+    }
+    const length = Math.min(stat.size - state.offset, STREAM_READ_CHUNK_BYTES);
+    if (length <= 0) return [];
+    const chunk = Buffer.alloc(length);
+    const { bytesRead } = await handle.read(chunk, 0, length, state.offset);
+    const jobs: NativeCaptureJobPayload[] = [];
+    let lineStart = 0;
+    let consumedBytes = 0;
+    for (let index = 0; index < bytesRead; index += 1) {
+      if (chunk[index] !== 0x0a) continue;
+      const line = chunk.subarray(lineStart, index).toString("utf8").trim();
+      lineStart = index + 1;
+      consumedBytes = lineStart;
+      if (!line) continue;
+      const job = JSON.parse(line) as NativeCaptureJobPayload;
+      if (Number.isFinite(job.sequence)) jobs.push(job);
+      if (jobs.length >= maxJobs) break;
+    }
+    state.offset += consumedBytes;
+    return jobs;
+  } catch (error) {
+    if (isMissingFileError(error)) return [];
+    throw error;
+  } finally {
+    await handle?.close().catch(() => undefined);
+  }
+}
+
+async function readNativeCaptureProducerStatus(runDir: string): Promise<NativeCaptureProducerStatus | null> {
+  try {
+    const raw = JSON.parse(await fs.readFile(path.join(runDir, "status.json"), "utf8"));
+    const scanner = raw?.scanner ?? raw;
+    if (!scanner || typeof scanner !== "object") return null;
+    return {
+      running: Boolean(scanner.running),
+      status: typeof scanner.status === "string" ? scanner.status : "unknown",
+      target: Math.max(0, Math.round(Number(scanner.target) || 0)),
+      captured: Math.max(0, Math.round(Number(scanner.captured) || 0)),
+    };
+  } catch (error) {
+    if (isMissingFileError(error) || error instanceof SyntaxError) return null;
+    throw error;
+  }
+}
+
+async function readStoredScanResults(resultsPath: string) {
+  const raw = await fs.readFile(resultsPath, "utf8");
+  const parsed = JSON.parse(raw);
+  return Array.isArray(parsed)
+    ? parsed.filter(isStoredScanResultEntry).map(evaluateStoredScanResult)
+    : [];
+}
+
+async function refreshCachedResultsAfterMutation(
+  deps: NativeScannerProcessingServiceDependencies,
+  requestedRunDir?: string,
+) {
+  const runDir = deps.resolveRunDir(requestedRunDir);
+  if (!runDir) return;
+  try {
+    const [results, deletedIds] = await Promise.all([
+      readStoredScanResults(path.join(runDir, "scan-results.json")),
+      loadNativeScannerDeletedResultIds(runDir),
+    ]);
+    replaceCachedLiveResults(runDir, results.filter((entry) => !deletedIds.has(entry.id)));
+  } catch {
+    // Mutation status remains authoritative; a later disk load can retry.
+    liveResultsByRunDir.delete(runDir);
+  }
+}
+
+async function recordResultReconciliationIfComplete(
+  deps: NativeScannerProcessingServiceDependencies,
+  runDir: string,
+  results: StoredScanResultEntry[],
+) {
+  const currentTiming = await loadRunTiming(deps, runDir);
+  // Legacy runs intentionally stay untouched. A reconciliation timestamp is
+  // meaningful only for a run that already owns the new capture/processing
+  // timeline and whose complete result file was durably written by this path.
+  if (!currentTiming?.resultsDurableAt || currentTiming.resultsReconciledAt) return currentTiming ?? undefined;
+
+  const producer = await readNativeCaptureProducerStatus(runDir).catch(() => null);
+  const terminal = producer
+    && !producer.running
+    && (producer.status === "done" || producer.status === "completed")
+    && producer.captured > 0
+    && results.length === producer.captured;
+  if (!terminal) return currentTiming;
+  return updateRunTiming(deps, runDir, { resultsReconciledAt: new Date().toISOString() }) ?? currentTiming;
+}
+
+async function updateRunTiming(
+  deps: NativeScannerProcessingServiceDependencies,
+  runDir: string,
+  patch: NativeScannerRunTimingPatch,
+) {
+  if (!deps.recordRunTiming || !runDir) return undefined;
+  try {
+    return await deps.recordRunTiming(runDir, patch);
+  } catch {
+    // Timing is evidence, never a dependency of scanner correctness. A later
+    // caller can still load the durable results and report the missing marker.
+    return undefined;
+  }
+}
+
+async function loadRunTiming(
+  deps: NativeScannerProcessingServiceDependencies,
+  runDir: string,
+) {
+  if (!deps.loadRunTiming || !runDir) return null;
+  try {
+    return await deps.loadRunTiming(runDir);
+  } catch {
+    return null;
+  }
+}
+
+function replaceCachedLiveResults(runDir: string, results: StoredScanResultEntry[]) {
+  liveResultsByRunDir.delete(runDir);
+  liveResultsByRunDir.set(runDir, [...results]);
+  while (liveResultsByRunDir.size > MAX_CACHED_LIVE_RUNS) {
+    const oldest = liveResultsByRunDir.keys().next().value;
+    if (typeof oldest !== "string") break;
+    liveResultsByRunDir.delete(oldest);
+  }
+}
+
+function appendCachedLiveResult(runDir: string, result: StoredScanResultEntry) {
+  const current = liveResultsByRunDir.get(runDir) ?? [];
+  if (current.some((entry) => entry.id === result.id)) return;
+  current.push(result);
+  liveResultsByRunDir.set(runDir, current);
+}
+
+function safePublishProgress(
+  deps: NativeScannerProcessingServiceDependencies,
+  progress: NativeScannerProcessingProgressStatus,
+) {
+  try {
+    deps.onProgress?.(progress);
+  } catch {
+    // UI progress must never abort durable OCR/parse processing.
+  }
+}
+
+function safePublishResult(deps: NativeScannerProcessingServiceDependencies, result: StoredScanResultEntry) {
+  try {
+    deps.onResult?.(result);
+  } catch {
+    // UI delivery is best effort; loadResults can reconcile from memory or disk.
+  }
+}
+
+function nativeCaptureJobIdentity(job: NativeCaptureJobPayload) {
+  return JSON.stringify({
+    sequence: job.sequence,
+    category: job.category ?? "",
+    page: job.page ?? null,
+    row: job.row ?? null,
+    col: job.col ?? null,
+    relativePath: job.relativePath ?? "",
+    absolutePath: job.absolutePath ?? "",
+    starCount: job.starCount ?? null,
+    starConfidence: job.starConfidence ?? null,
+    starSource: job.starSource ?? "",
+  });
+}
+
+function isMissingFileError(error: unknown) {
+  return Boolean(error && typeof error === "object" && "code" in error && error.code === "ENOENT");
+}
+
+function delay(ms: number) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
 export function nativeScannerProcessStats(status: NativeScannerProcessStatus): Record<string, number> {
   return {
     processed: status.processed,
@@ -252,13 +901,53 @@ async function processNativeCaptureJob({
     const capture = await deps.buildCaptureResult(imagePath, job);
     const parsed = parseArtifactCandidate(capture);
     const ikMatch = parsed && ikCatalog ? matchParsedArtifactToIk(parsed, ikCatalog) : null;
-    const notes = [...new Set([...(parsed?.notes ?? []), ...(ikMatch?.notes ?? [])])];
-    const needsReview = parsedArtifactNeedsReview(parsed) || Boolean(ikMatch && !ikMatch.matched);
+    const rarityEvidence = nativeJobRarityEvidence(job);
+    const notes = [...new Set([
+      ...(parsed?.notes ?? []),
+      ...(ikMatch?.notes ?? []),
+      ...(rarityEvidence.uncertain ? ["Artifact star row could not be confirmed; keep this result in Review."] : []),
+    ])];
+    const needsReview = shouldFlagArtifactForReview(parsed)
+      || Boolean(ikMatch && !ikMatch.matched)
+      || rarityEvidence.uncertain;
     const canPersist = parsedArtifactCanPersist(parsed, needsReview);
-    const shouldPersist = Boolean(persist && parsed && canPersist && !needsReview);
+    const baseScanResult = createStoredScanResultEntry({
+      runId,
+      sequence: job.sequence,
+      page: job.page,
+      row: job.row,
+      col: job.col,
+      category: category.scanResultCategory,
+      source: "native-ik-scan",
+      imagePath,
+      parsed,
+      needsReview,
+      confidence: parsed?.confidence ?? 0,
+      capturedAt: job.capturedAt,
+      persistedArtifact: false,
+      notes,
+      locked: capture.locked,
+      ikMatch: ikMatch ?? undefined,
+      rarity: rarityEvidence.rarity,
+      rarityConfidence: rarityEvidence.confidence,
+      raritySource: rarityEvidence.rarity ? "native" : undefined,
+    });
+    const shouldPersist = Boolean(
+      persist
+      && parsed
+      && canPersist
+      && !needsReview
+      && baseScanResult.valueStatus === "evaluated"
+      && baseScanResult.valueEvaluation?.status === "evaluated"
+      && baseScanResult.valueEvaluation.score !== null
+      && Number.isFinite(baseScanResult.valueEvaluation.score),
+    );
     const storedRecord = parsed && shouldPersist
       ? toStoredArtifact(parsed, "native-ik-scan", needsReview, capture.locked)
       : null;
+    const scanResult = storedRecord
+      ? { ...baseScanResult, artifactRecordId: storedRecord.id, persistedArtifact: true }
+      : baseScanResult;
     return {
       result: {
         sequence: job.sequence,
@@ -273,30 +962,14 @@ async function processNativeCaptureJob({
         slot: parsed?.slot,
         confidence: parsed?.confidence ?? 0,
         needsReview,
+        rarity: rarityEvidence.rarity,
+        rarityConfidence: rarityEvidence.confidence,
         persisted: shouldPersist,
         ikMatch: ikMatch ?? undefined,
         notes,
         ocr: capture.ocr ?? [],
       },
-      scanResult: createStoredScanResultEntry({
-        runId,
-        sequence: job.sequence,
-        page: job.page,
-        row: job.row,
-        col: job.col,
-        category: category.scanResultCategory,
-        source: "native-ik-scan",
-        imagePath,
-        parsed,
-        needsReview,
-        confidence: parsed?.confidence ?? 0,
-        capturedAt: job.capturedAt,
-        artifactRecordId: storedRecord?.id,
-        persistedArtifact: shouldPersist,
-        notes,
-        locked: capture.locked,
-        ikMatch: ikMatch ?? undefined,
-      }),
+      scanResult,
       storedRecord,
     };
   } catch (error) {
@@ -305,6 +978,26 @@ async function processNativeCaptureJob({
   }
 }
 
+function nativeJobRarityEvidence(job: NativeCaptureJobPayload): {
+  rarity?: ArtifactRarity;
+  confidence?: number;
+  /** The newer helper attempted direct visual detection but could not prove a count. */
+  uncertain: boolean;
+} {
+  const hasDetectionPayload = Object.prototype.hasOwnProperty.call(job, "starCount")
+    || Object.prototype.hasOwnProperty.call(job, "starConfidence")
+    || Object.prototype.hasOwnProperty.call(job, "starSource");
+  if (!hasDetectionPayload) return { uncertain: false };
+
+  const starCount = Number(job.starCount);
+  const confidence = Number(job.starConfidence);
+  const validRarity = Number.isInteger(starCount) && starCount >= 1 && starCount <= 5;
+  const confident = Number.isFinite(confidence) && confidence >= 0.8 && confidence <= 1;
+  const hasSource = typeof job.starSource === "string" && job.starSource.trim().length > 0;
+  if (!validRarity || !confident || !hasSource) return { uncertain: true };
+  return { rarity: starCount as ArtifactRarity, confidence, uncertain: false };
+}
+
 function reviewJobResult({
   category,
   error,
@@ -473,15 +1166,6 @@ function isStoredScanResultEntry(value: unknown): value is StoredScanResultEntry
     && Array.isArray(entry.notes);
 }
 
-function parsedArtifactNeedsReview(parsed: ReturnType<typeof parseArtifactCandidate>) {
-  if (!parsed) return true;
-  if (parsed.confidence < 78) return true;
-  const criticalFields: Array<"name" | "slot" | "mainStat" | "mainValue" | "setName"> = ["name", "slot", "mainStat", "mainValue", "setName"];
-  if (criticalFields.some((field) => (parsed.fields[field]?.confidence ?? 0) < 70)) return true;
-  if (parsed.substats.length === 0) return true;
-  return parsed.notes.some((note) => /not confidently parsed|substats look incomplete|likely OCR misread/i.test(note));
-}
-
 function parsedArtifactCanPersist(parsed: ReturnType<typeof parseArtifactCandidate>, needsReview: boolean) {
   if (!parsed) return false;
   if (parsed.name === "Unknown artifact") return false;

electron/services/nativeScannerResultTombstones.ts

@@ -0,0 +1,72 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+
+/**
+ * Native runs remain replayable evidence. Instead of rewriting their raw result
+ * array, locally removed rows are recorded here and filtered at load time.
+ */
+export const NATIVE_SCANNER_RESULT_TOMBSTONES_FILE = "deleted-results.jsonl";
+
+export interface NativeScannerResultTombstone {
+  version: 1;
+  resultId: string;
+  deletedAt: string;
+  imagePath?: string;
+  removeLinkedStoreRecord: boolean;
+  storeRecordId?: string;
+}
+
+export function nativeScannerResultTombstonePath(runDir: string) {
+  return path.join(runDir, NATIVE_SCANNER_RESULT_TOMBSTONES_FILE);
+}
+
+export async function loadNativeScannerResultTombstones(runDir: string): Promise<NativeScannerResultTombstone[]> {
+  try {
+    const raw = await fs.readFile(nativeScannerResultTombstonePath(runDir), "utf8");
+    return raw
+      .split(/\r?\n/)
+      .filter(Boolean)
+      .map(parseTombstone)
+      .filter((entry): entry is NativeScannerResultTombstone => Boolean(entry));
+  } catch (error) {
+    if (isMissingFileError(error)) return [];
+    throw error;
+  }
+}
+
+export async function loadNativeScannerDeletedResultIds(runDir: string) {
+  const tombstones = await loadNativeScannerResultTombstones(runDir);
+  return new Set(tombstones.map((entry) => entry.resultId));
+}
+
+export async function appendNativeScannerResultTombstone(
+  runDir: string,
+  tombstone: NativeScannerResultTombstone,
+) {
+  const filePath = nativeScannerResultTombstonePath(runDir);
+  await fs.appendFile(filePath, `${JSON.stringify(tombstone)}\n`, "utf8");
+  return filePath;
+}
+
+function parseTombstone(value: string): NativeScannerResultTombstone | null {
+  try {
+    const parsed = JSON.parse(value) as Partial<NativeScannerResultTombstone>;
+    const resultId = typeof parsed.resultId === "string" ? parsed.resultId.trim() : "";
+    const deletedAt = typeof parsed.deletedAt === "string" ? parsed.deletedAt : "";
+    if (!resultId || !deletedAt) return null;
+    return {
+      version: 1,
+      resultId,
+      deletedAt,
+      ...(typeof parsed.imagePath === "string" ? { imagePath: parsed.imagePath } : {}),
+      removeLinkedStoreRecord: Boolean(parsed.removeLinkedStoreRecord),
+      ...(typeof parsed.storeRecordId === "string" ? { storeRecordId: parsed.storeRecordId } : {}),
+    };
+  } catch {
+    return null;
+  }
+}
+
+function isMissingFileError(error: unknown) {
+  return typeof error === "object" && error !== null && "code" in error && (error as { code?: string }).code === "ENOENT";
+}

electron/services/nativeScannerResultWorkflowService.ts

@@ -1,23 +1,33 @@
 import fs from "node:fs/promises";
 import path from "node:path";
 import { reviewedMainValueError, type ParsedArtifactCandidate } from "../../src/lib/artifactOcrParser.js";
+import { evaluateArtifactValue, evaluateStoredScanResult } from "../../src/lib/artifactEvaluation.js";
 import { matchParsedArtifactToIk, type IkArtifactCatalog } from "../../src/lib/ikArtifactMatcher.js";
 import { buildScanResultPromotionSummary, scanResultToStoredArtifact } from "../../src/lib/scanResultPromotion.js";
 import { implausibleSubstats } from "../../src/lib/substatRolls.js";
 import type {
   ArtifactStoreLoadResult,
   ArtifactStoreSaveResult,
+  NativeScannerDeleteResultStatus,
   NativeScannerPromotionStatus,
   NativeScannerReviewArtifactInput,
   NativeScannerReviewStatus,
   ReviewSamplePayload,
 } from "../../src/types/global.js";
-import type { StoredArtifactRecord, StoredScanResultEntry } from "../../src/types/storage.js";
+import type { ArtifactRarity, ScanResultArtifactIdentity, StoredArtifactRecord, StoredScanResultEntry } from "../../src/types/storage.js";
+import {
+  appendNativeScannerResultTombstone,
+  loadNativeScannerDeletedResultIds,
+  loadNativeScannerResultTombstones,
+  nativeScannerResultTombstonePath,
+} from "./nativeScannerResultTombstones.js";
 
 export interface NativeScannerResultWorkflowDependencies {
   resolveRunDir(runDir?: string): string;
   loadArtifacts?: () => Promise<ArtifactStoreLoadResult>;
   saveArtifacts(records: StoredArtifactRecord[]): Promise<Pick<ArtifactStoreSaveResult, "added" | "updated"> & Partial<ArtifactStoreSaveResult>>;
+  removeArtifacts?: (ids: string[]) => Promise<{ ok: boolean; removed: number }>;
+  isProcessingRunActive?: (runDir: string) => boolean;
   saveReviewSample?: (sample: ReviewSamplePayload) => Promise<{ ok: boolean }>;
   loadIkArtifactCatalog?: () => Promise<IkArtifactCatalog | null>;
 }
@@ -31,6 +41,11 @@ export interface NativeScannerResultWorkflowService {
     artifact?: NativeScannerReviewArtifactInput;
     note?: string;
   }): Promise<NativeScannerReviewStatus>;
+  deleteResult(options: {
+    runDir?: string;
+    resultId: string;
+    removeLinkedStoreRecord?: boolean;
+  }): Promise<NativeScannerDeleteResultStatus>;
 }
 
 export function createNativeScannerResultWorkflowService(
@@ -46,6 +61,10 @@ export function createNativeScannerResultWorkflowService(
       }
 
       try {
+        const deletedIds = await loadNativeScannerDeletedResultIds(runDir);
+        if (requestedIds.some((id) => deletedIds.has(id))) {
+          return emptyPromotionStatus(runDir, logPath, requestedIds.length, "Deleted scan results cannot be promoted.");
+        }
         const { path: resultsPath, results: scanResults } = await loadScanResults(runDir);
         const selectedIds = new Set(requestedIds);
         const selectedResults = scanResults.filter((entry) => selectedIds.has(entry.id));
@@ -102,6 +121,10 @@ export function createNativeScannerResultWorkflowService(
       }
 
       try {
+        const deletedIds = await loadNativeScannerDeletedResultIds(runDir);
+        if (deletedIds.has(resultId)) {
+          return emptyReviewStatus(runDir, logPath, resultId, options.action, "Deleted scan results cannot be reviewed.");
+        }
         const { path: resultsPath, results: scanResults } = await loadScanResults(runDir);
         const index = scanResults.findIndex((entry) => entry.id === resultId);
         if (index < 0) return emptyReviewStatus(runDir, logPath, resultId, options.action, "Selected scan result was not found.");
@@ -118,7 +141,7 @@ export function createNativeScannerResultWorkflowService(
           updated = rejectResult(current, reviewedAt, note);
         } else {
           const artifact = normalizeReviewedArtifact(options.artifact);
-          const errors = reviewedArtifactErrors(artifact);
+          const errors = reviewedArtifactErrors(artifact, current.artifact?.rarity);
           if (errors.length > 0) return emptyReviewStatus(runDir, logPath, resultId, options.action, errors.join(" "));
           const parsed = reviewedArtifactToParsed(artifact);
           const catalog = deps.loadIkArtifactCatalog ? await deps.loadIkArtifactCatalog() : null;
@@ -148,13 +171,102 @@ export function createNativeScannerResultWorkflowService(
         return emptyReviewStatus(runDir, logPath, resultId, options.action, errorMessage(error));
       }
     },
+
+    async deleteResult(options) {
+      const runDir = deps.resolveRunDir(options.runDir);
+      const resultId = String(options.resultId ?? "").trim();
+      const tombstonePath = runDir ? nativeScannerResultTombstonePath(runDir) : "";
+      if (!runDir || !resultId) {
+        return emptyDeleteStatus(runDir, tombstonePath, resultId, "Deleting a local scan result requires a run directory and result ID.");
+      }
+
+      try {
+        if (await isNativeRunActive(runDir) || deps.isProcessingRunActive?.(runDir)) {
+          return emptyDeleteStatus(runDir, tombstonePath, resultId, "An active native scan cannot be changed. Stop and finish the scan first.");
+        }
+
+        const existingTombstones = await loadNativeScannerResultTombstones(runDir);
+        if (existingTombstones.some((entry) => entry.resultId === resultId)) {
+          return {
+            ok: true,
+            runDir,
+            tombstonePath,
+            resultId,
+            deletedResult: false,
+            alreadyDeleted: true,
+            cropPath: "",
+            deletedCrop: false,
+            deletedStoreRecord: false,
+            warnings: [],
+          };
+        }
+
+        const { results } = await loadScanResults(runDir);
+        const current = results.find((entry) => entry.id === resultId);
+        if (!current) {
+          return emptyDeleteStatus(runDir, tombstonePath, resultId, "Selected scan result was not found.");
+        }
+
+        const removeLinkedStoreRecord = Boolean(options.removeLinkedStoreRecord);
+        const storeRecordId = removeLinkedStoreRecord ? current.artifactRecordId?.trim() : undefined;
+        await appendNativeScannerResultTombstone(runDir, {
+          version: 1,
+          resultId,
+          deletedAt: new Date().toISOString(),
+          ...(current.imagePath ? { imagePath: current.imagePath } : {}),
+          removeLinkedStoreRecord,
+          ...(storeRecordId ? { storeRecordId } : {}),
+        });
+
+        const warnings: string[] = [];
+        const crop = await removeLocalCrop(runDir, current.imagePath);
+        if (crop.warning) warnings.push(crop.warning);
+
+        let deletedStoreRecord = false;
+        if (removeLinkedStoreRecord) {
+          if (!storeRecordId) {
+            warnings.push("This scan result has no explicitly linked local store record to remove.");
+          } else if (!deps.removeArtifacts) {
+            warnings.push("The linked local store record was retained because local-store deletion is unavailable.");
+          } else {
+            try {
+              const removal = await deps.removeArtifacts([storeRecordId]);
+              if (!removal.ok) {
+                warnings.push("The scan result was removed, but the linked local store record could not be removed.");
+              } else {
+                deletedStoreRecord = removal.removed > 0;
+                if (!deletedStoreRecord) warnings.push("The linked local store record was already absent.");
+              }
+            } catch {
+              warnings.push("The scan result was removed, but the linked local store record could not be removed.");
+            }
+          }
+        }
+
+        return {
+          ok: true,
+          runDir,
+          tombstonePath,
+          resultId,
+          deletedResult: true,
+          alreadyDeleted: false,
+          cropPath: crop.path,
+          deletedCrop: crop.deleted,
+          ...(storeRecordId ? { storeRecordId } : {}),
+          deletedStoreRecord,
+          warnings,
+        };
+      } catch (error) {
+        return emptyDeleteStatus(runDir, tombstonePath, resultId, errorMessage(error));
+      }
+    },
   };
 }
 
 async function loadScanResults(runDir: string) {
   const resultsPath = path.join(runDir, "scan-results.json");
   const raw = JSON.parse(await fs.readFile(resultsPath, "utf8"));
-  const results = Array.isArray(raw) ? raw.filter(isStoredScanResultEntry) : [];
+  const results = Array.isArray(raw) ? raw.filter(isStoredScanResultEntry).map(evaluateStoredScanResult) : [];
   return { path: resultsPath, results };
 }
 
@@ -167,14 +279,14 @@ async function appendWorkflowLog(logPath: string, payload: object) {
 }
 
 function rejectResult(current: StoredScanResultEntry, reviewedAt: string, note: string): StoredScanResultEntry {
-  return {
+  return evaluateStoredScanResult({
     ...current,
     extractionStatus: "review",
     needsReview: true,
     valueStatus: "review",
     notes: [...new Set([...current.notes, note || "Manual review rejected this result."])],
     review: { status: "rejected", reviewedAt, note: note || undefined, correctedFields: [] },
-  };
+  });
 }
 
 function approveResult(
@@ -185,22 +297,34 @@ function approveResult(
   note: string,
   correctedFields: string[],
 ): StoredScanResultEntry {
-  return {
+  const preservedRarity = current.artifact?.rarity;
+  const preservedRarityMetadata = preservedRarity === undefined
+    ? {}
+    : {
+        rarity: preservedRarity,
+        ...(current.artifact?.rarityConfidence === undefined ? {} : { rarityConfidence: current.artifact.rarityConfidence }),
+        ...(current.artifact?.raritySource === undefined ? {} : { raritySource: current.artifact.raritySource }),
+      };
+  const approvedArtifact: ScanResultArtifactIdentity = {
+    ...artifact,
+    ...preservedRarityMetadata,
+  };
+  return evaluateStoredScanResult({
     ...current,
     extractionStatus: "parsed",
     extractionConfidence: 100,
     needsReview: false,
     valueStatus: "deferred",
     valueScore: null,
-    artifact,
+    artifact: approvedArtifact,
     ikMatch,
-    fieldConfidences: reviewedFieldConfidences(artifact),
+    fieldConfidences: reviewedFieldConfidences(artifact, current.artifact),
     artifactRecordId: undefined,
     persistedArtifact: false,
     notes: note ? [`Manual review approved: ${note}`] : ["Manual review approved."],
     error: undefined,
     review: { status: "approved", reviewedAt, note: note || undefined, correctedFields },
-  };
+  });
 }
 
 async function saveApprovedEvalSample(
@@ -258,6 +382,73 @@ function emptyReviewStatus(
   return { ok: false, runDir, logPath, resultId, action, evalSampleSaved: false, correctedFields: [], error };
 }
 
+function emptyDeleteStatus(
+  runDir: string,
+  tombstonePath: string,
+  resultId: string,
+  error: string,
+): NativeScannerDeleteResultStatus {
+  return {
+    ok: false,
+    runDir,
+    tombstonePath,
+    resultId,
+    deletedResult: false,
+    alreadyDeleted: false,
+    cropPath: "",
+    deletedCrop: false,
+    deletedStoreRecord: false,
+    warnings: [],
+    error,
+  };
+}
+
+async function isNativeRunActive(runDir: string) {
+  try {
+    const raw = JSON.parse(await fs.readFile(path.join(runDir, "status.json"), "utf8"));
+    const scanner = raw?.scanner ?? raw;
+    return Boolean(scanner?.running);
+  } catch {
+    // Older offline runs may not have a status file. A missing status is not
+    // evidence of a running producer, while a present running state blocks.
+    return false;
+  }
+}
+
+async function removeLocalCrop(runDir: string, imagePath: string) {
+  const resolvedRunDir = path.resolve(runDir);
+  const candidate = imagePath
+    ? path.isAbsolute(imagePath) ? path.resolve(imagePath) : path.resolve(resolvedRunDir, imagePath)
+    : "";
+  if (!candidate) {
+    return { path: "", deleted: false, warning: "No crop image was recorded for this local scan result." };
+  }
+  if (!isPathInside(resolvedRunDir, candidate)) {
+    return { path: candidate, deleted: false, warning: "The recorded crop path is outside the native scan run and was retained." };
+  }
+  if (!/\.png$/i.test(candidate)) {
+    return { path: candidate, deleted: false, warning: "The recorded crop is not a PNG file and was retained." };
+  }
+  try {
+    await fs.unlink(candidate);
+    return { path: candidate, deleted: true };
+  } catch (error) {
+    if (isMissingFileError(error)) {
+      return { path: candidate, deleted: false, warning: "The crop image was already absent." };
+    }
+    return { path: candidate, deleted: false, warning: "The scan result was removed, but its crop image could not be removed." };
+  }
+}
+
+function isPathInside(root: string, candidate: string) {
+  const relative = path.relative(root, candidate);
+  return relative === "" || (!relative.startsWith("..") && !path.isAbsolute(relative));
+}
+
+function isMissingFileError(error: unknown) {
+  return typeof error === "object" && error !== null && "code" in error && (error as { code?: string }).code === "ENOENT";
+}
+
 function normalizeReviewedArtifact(input?: NativeScannerReviewArtifactInput): NativeScannerReviewArtifactInput {
   return {
     name: String(input?.name ?? "").trim(),
@@ -272,7 +463,7 @@ function normalizeReviewedArtifact(input?: NativeScannerReviewArtifactInput): Na
   };
 }
 
-function reviewedArtifactErrors(artifact: NativeScannerReviewArtifactInput) {
+function reviewedArtifactErrors(artifact: NativeScannerReviewArtifactInput, confirmedRarity?: ArtifactRarity) {
   const errors: string[] = [];
   if (!artifact.name || artifact.name === "Unknown artifact") errors.push("Artifact name is required.");
   if (!artifact.slot || artifact.slot === "Unknown slot") errors.push("Artifact slot is required.");
@@ -283,8 +474,15 @@ function reviewedArtifactErrors(artifact: NativeScannerReviewArtifactInput) {
   if (artifact.substats.length === 0) errors.push("At least one substat is required.");
   const mainValueError = reviewedMainValueError(artifact.slot, artifact.mainStat, artifact.level, artifact.mainValue);
   if (mainValueError) errors.push(mainValueError);
-  const implausible = implausibleSubstats(artifact.substats, artifact.level > 16 ? 5 : undefined);
+  const implausible = implausibleSubstats(artifact.substats, confirmedRarity === 5 || artifact.level > 16 ? 5 : undefined);
   if (implausible.length > 0) errors.push(`Implausible substats: ${implausible.join(", ")}.`);
+  if (errors.length === 0) {
+    const evaluation = evaluateArtifactValue({
+      ...artifact,
+      ...(confirmedRarity === undefined ? {} : { rarity: confirmedRarity }),
+    });
+    if (evaluation.status !== "evaluated" && evaluation.status !== "excluded") errors.push(evaluation.summary);
+  }
   return errors;
 }
 
@@ -316,8 +514,20 @@ function artifactChangedFields(
     .filter((key) => JSON.stringify(before[key]) !== JSON.stringify(after[key]));
 }
 
-function reviewedFieldConfidences(artifact: NativeScannerReviewArtifactInput) {
-  return [
+function reviewedFieldConfidences(
+  artifact: NativeScannerReviewArtifactInput,
+  previous?: ScanResultArtifactIdentity,
+) {
+  const rarityField = previous?.rarity === undefined
+    ? []
+    : [{
+        key: "rarity",
+        label: "Stars",
+        value: `${previous.rarity}★`,
+        confidence: Math.round((previous.rarityConfidence ?? 0) * 100),
+        source: "visual" as const,
+      }];
+  const manualFields = [
     { key: "name", label: "Name", value: artifact.name },
     { key: "slot", label: "Slot", value: artifact.slot },
     { key: "level", label: "Level", value: String(artifact.level) },
@@ -327,6 +537,7 @@ function reviewedFieldConfidences(artifact: NativeScannerReviewArtifactInput) {
     { key: "equipped", label: "Equipped", value: artifact.equipped },
     { key: "substats", label: "Substats", value: artifact.substats.join(", ") },
   ].map((field) => ({ ...field, confidence: 100, source: "database" as const }));
+  return [...manualFields, ...rarityField];
 }
 
 async function loadReviewOcr(runDir: string, sequence: number) {

electron/services/nativeScannerRunDirectory.ts

@@ -0,0 +1,109 @@
+import {
+  existsSync,
+  readFileSync,
+  readdirSync,
+  realpathSync,
+  statSync,
+} from "node:fs";
+import path from "node:path";
+
+const COMPLETE_RUN_FILES = [
+  "manifest.json",
+  "status.json",
+  "capture-jobs.jsonl",
+  "scan-results.json",
+  "processing-report.json",
+] as const;
+
+export interface NativeScannerRunDirectoryOptions {
+  outputRoot: string;
+  requestedRunDir?: string;
+  activeRunDir?: string;
+}
+
+export function resolveNativeScannerRunDirectory({
+  outputRoot,
+  requestedRunDir,
+  activeRunDir,
+}: NativeScannerRunDirectoryOptions) {
+  const root = path.resolve(outputRoot);
+  const requested = requestedRunDir?.trim();
+  if (requested) return resolveContainedDirectory(root, requested);
+
+  const active = activeRunDir?.trim();
+  if (active) return resolveContainedDirectory(root, active);
+
+  return newestCompleteNativeScannerRun(root);
+}
+
+export function newestCompleteNativeScannerRun(outputRoot: string) {
+  const root = path.resolve(outputRoot);
+  if (!isDirectory(root)) return "";
+
+  try {
+    const candidates = readdirSync(root, { withFileTypes: true })
+      .filter((entry) => entry.isDirectory())
+      .map((entry) => completeRunCandidate(root, path.join(root, entry.name)))
+      .filter((entry): entry is CompleteRunCandidate => Boolean(entry))
+      .sort((left, right) => right.createdAt - left.createdAt || right.name.localeCompare(left.name));
+    return candidates[0]?.runDir ?? "";
+  } catch {
+    return "";
+  }
+}
+
+interface CompleteRunCandidate {
+  runDir: string;
+  name: string;
+  createdAt: number;
+}
+
+function completeRunCandidate(root: string, candidate: string): CompleteRunCandidate | null {
+  const runDir = resolveContainedDirectory(root, candidate);
+  if (!runDir || COMPLETE_RUN_FILES.some((file) => !existsSync(path.join(runDir, file)))) return null;
+
+  try {
+    const statusPayload = JSON.parse(readFileSync(path.join(runDir, "status.json"), "utf8"));
+    const status = statusPayload?.scanner ?? statusPayload;
+    const target = Number(status?.target ?? 0);
+    const captured = Number(status?.captured ?? 0);
+    if (status?.running !== false || status?.status !== "done" || target < 1 || captured < target) return null;
+
+    const results = JSON.parse(readFileSync(path.join(runDir, "scan-results.json"), "utf8"));
+    if (!Array.isArray(results) || results.length < captured) return null;
+
+    const manifest = JSON.parse(readFileSync(path.join(runDir, "manifest.json"), "utf8"));
+    const manifestCreatedAt = Date.parse(String(manifest?.createdAt ?? ""));
+    return {
+      runDir,
+      name: path.basename(runDir),
+      createdAt: Number.isFinite(manifestCreatedAt) ? manifestCreatedAt : statSync(runDir).mtimeMs,
+    };
+  } catch {
+    return null;
+  }
+}
+
+function resolveContainedDirectory(root: string, candidate: string) {
+  try {
+    const resolvedRoot = realpathSync(root);
+    const resolvedCandidate = realpathSync(path.resolve(candidate));
+    if (!isPathInside(resolvedRoot, resolvedCandidate) || !isDirectory(resolvedCandidate)) return "";
+    return resolvedCandidate;
+  } catch {
+    return "";
+  }
+}
+
+function isDirectory(candidate: string) {
+  try {
+    return statSync(candidate).isDirectory();
+  } catch {
+    return false;
+  }
+}
+
+function isPathInside(root: string, candidate: string) {
+  const relative = path.relative(root, candidate);
+  return relative === "" || (!relative.startsWith("..") && !path.isAbsolute(relative));
+}

electron/services/nativeScannerRunTiming.ts

@@ -0,0 +1,203 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+import type { NativeScannerRunTiming, NativeScannerRunTimingPatch } from "../../src/types/global.js";
+
+export const NATIVE_SCANNER_RUN_TIMING_FILE = "run-timing.json";
+export const NATIVE_SCANNER_RUN_TIMING_VERSION = "native-scanner-run-timing-v1" as const;
+
+const timingWriteQueues = new Map<string, Promise<void>>();
+
+const timestampFields = [
+  "requestStartedAt",
+  "scannerStartedAt",
+  "captureStartedAt",
+  "captureCompletedAt",
+  "processingStartedAt",
+  "processingCompletedAt",
+  "resultsDurableAt",
+  "resultsReconciledAt",
+] as const satisfies ReadonlyArray<keyof NativeScannerRunTimingPatch>;
+
+type TimingTimestampField = typeof timestampFields[number];
+
+export function nativeScannerRunTimingPath(runDir: string) {
+  return path.join(path.resolve(runDir), NATIVE_SCANNER_RUN_TIMING_FILE);
+}
+
+export async function readNativeScannerRunTiming(runDir: string): Promise<NativeScannerRunTiming | null> {
+  const timingPath = nativeScannerRunTimingPath(runDir);
+  try {
+    const raw = JSON.parse(await fs.readFile(timingPath, "utf8")) as unknown;
+    return normalizeTiming(raw);
+  } catch (error) {
+    if (isMissingFileError(error)) return null;
+    throw error;
+  }
+}
+
+/**
+ * Adds first-observed lifecycle markers to one run's durable timing record.
+ * A marker is deliberately immutable after the first valid observation so
+ * polling or a later renderer retry cannot rewrite the measured interval.
+ */
+export async function recordNativeScannerRunTiming(
+  runDir: string,
+  patch: NativeScannerRunTimingPatch,
+): Promise<NativeScannerRunTiming> {
+  const resolvedRunDir = path.resolve(runDir);
+  const previous = timingWriteQueues.get(resolvedRunDir) ?? Promise.resolve();
+  const task = previous
+    .catch(() => undefined)
+    .then(async () => {
+      const current = await readNativeScannerRunTiming(resolvedRunDir);
+      const next = mergeTiming(current, patch);
+      if (!sameTiming(current, next)) {
+        await writeJsonAtomic(nativeScannerRunTimingPath(resolvedRunDir), next);
+      }
+      return next;
+    });
+  const settled = task.then(() => undefined, () => undefined);
+  timingWriteQueues.set(resolvedRunDir, settled);
+  void settled.finally(() => {
+    if (timingWriteQueues.get(resolvedRunDir) === settled) timingWriteQueues.delete(resolvedRunDir);
+  });
+  return task;
+}
+
+export function validateNativeScannerRunTiming(timing: NativeScannerRunTiming): string[] {
+  const issues: string[] = [];
+  if (timing.version !== NATIVE_SCANNER_RUN_TIMING_VERSION) {
+    issues.push(`unsupported timing version ${String(timing.version)}`);
+  }
+
+  for (const field of timestampFields) {
+    const value = timing[field];
+    if (value !== undefined && !isValidTimestamp(value)) {
+      issues.push(`${field} is not a valid ISO timestamp`);
+    }
+  }
+
+  validateOrder(issues, timing, "requestStartedAt", "scannerStartedAt");
+  validateOrder(issues, timing, "requestStartedAt", "captureStartedAt");
+  validateOrder(issues, timing, "requestStartedAt", "processingStartedAt");
+  validateOrder(issues, timing, "captureStartedAt", "captureCompletedAt");
+  validateOrder(issues, timing, "captureCompletedAt", "processingCompletedAt");
+  validateOrder(issues, timing, "processingStartedAt", "processingCompletedAt");
+  validateOrder(issues, timing, "processingCompletedAt", "resultsDurableAt");
+  validateOrder(issues, timing, "resultsDurableAt", "resultsReconciledAt");
+
+  validateDuration(issues, timing, "requestToResultsDurableMs", "requestStartedAt", "resultsDurableAt");
+  validateDuration(issues, timing, "requestToResultsReconciledMs", "requestStartedAt", "resultsReconciledAt");
+  return issues;
+}
+
+export function hasCompleteNativeScannerRunTiming(timing: NativeScannerRunTiming | null | undefined) {
+  return Boolean(
+    timing?.requestStartedAt
+    && timing.scannerStartedAt
+    && timing.captureCompletedAt
+    && timing.processingStartedAt
+    && timing.processingCompletedAt
+    && timing.resultsDurableAt
+    && timing.resultsReconciledAt,
+  );
+}
+
+function mergeTiming(current: NativeScannerRunTiming | null, patch: NativeScannerRunTimingPatch): NativeScannerRunTiming {
+  const next: NativeScannerRunTiming = { version: NATIVE_SCANNER_RUN_TIMING_VERSION };
+  for (const field of timestampFields) {
+    const value = firstValidTimestamp(current?.[field], patch[field]);
+    if (value) next[field] = value;
+  }
+  const durableMs = durationMs(next.requestStartedAt, next.resultsDurableAt);
+  if (durableMs !== null) next.requestToResultsDurableMs = durableMs;
+  const reconciledMs = durationMs(next.requestStartedAt, next.resultsReconciledAt);
+  if (reconciledMs !== null) next.requestToResultsReconciledMs = reconciledMs;
+  return next;
+}
+
+function normalizeTiming(value: unknown): NativeScannerRunTiming {
+  if (!value || typeof value !== "object") throw new Error("Native scanner timing file is not an object.");
+  const candidate = value as Partial<NativeScannerRunTiming>;
+  const raw: NativeScannerRunTiming = {
+    version: candidate.version as NativeScannerRunTiming["version"],
+  };
+  for (const field of timestampFields) {
+    if (candidate[field] !== undefined) raw[field] = candidate[field] as string;
+  }
+  if (candidate.requestToResultsDurableMs !== undefined) {
+    raw.requestToResultsDurableMs = candidate.requestToResultsDurableMs as number;
+  }
+  if (candidate.requestToResultsReconciledMs !== undefined) {
+    raw.requestToResultsReconciledMs = candidate.requestToResultsReconciledMs as number;
+  }
+  const issues = validateNativeScannerRunTiming(raw);
+  if (issues.length > 0) throw new Error(`Invalid native scanner timing file: ${issues.join("; ")}`);
+  return mergeTiming(null, raw);
+}
+
+function validateOrder(
+  issues: string[],
+  timing: NativeScannerRunTiming,
+  earlier: TimingTimestampField,
+  later: TimingTimestampField,
+) {
+  const earlierMs = timestampMs(timing[earlier]);
+  const laterMs = timestampMs(timing[later]);
+  if (earlierMs !== null && laterMs !== null && laterMs < earlierMs) {
+    issues.push(`${later} is before ${earlier}`);
+  }
+}
+
+function validateDuration(
+  issues: string[],
+  timing: NativeScannerRunTiming,
+  field: "requestToResultsDurableMs" | "requestToResultsReconciledMs",
+  startedField: TimingTimestampField,
+  completedField: TimingTimestampField,
+) {
+  const declared = timing[field];
+  const expected = durationMs(timing[startedField], timing[completedField]);
+  if (declared !== undefined && (!Number.isInteger(declared) || declared < 0)) {
+    issues.push(`${field} is not a non-negative integer`);
+  }
+  if (expected !== null && declared !== expected) {
+    issues.push(`${field} does not match ${startedField} to ${completedField}`);
+  }
+  if (expected === null && declared !== undefined) {
+    issues.push(`${field} exists without both endpoint timestamps`);
+  }
+}
+
+function firstValidTimestamp(...values: Array<string | null | undefined>) {
+  return values.find((value): value is string => isValidTimestamp(value));
+}
+
+function isValidTimestamp(value: unknown): value is string {
+  return typeof value === "string" && value.length > 0 && Number.isFinite(Date.parse(value));
+}
+
+function timestampMs(value: unknown) {
+  return isValidTimestamp(value) ? Date.parse(value) : null;
+}
+
+function durationMs(startedAt: string | undefined, completedAt: string | undefined) {
+  const started = timestampMs(startedAt);
+  const completed = timestampMs(completedAt);
+  if (started === null || completed === null || completed < started) return null;
+  return Math.round(completed - started);
+}
+
+function sameTiming(left: NativeScannerRunTiming | null, right: NativeScannerRunTiming) {
+  return JSON.stringify(left) === JSON.stringify(right);
+}
+
+async function writeJsonAtomic(filePath: string, payload: unknown) {
+  const temporaryPath = `${filePath}.tmp-${process.pid}`;
+  await fs.writeFile(temporaryPath, JSON.stringify(payload, null, 2), "utf8");
+  await fs.rename(temporaryPath, filePath);
+}
+
+function isMissingFileError(error: unknown) {
+  return Boolean(error && typeof error === "object" && "code" in error && error.code === "ENOENT");
+}