diff --git a/.env.example b/.env.example
index 028f494..38c31bc 100644
--- a/.env.example
+++ b/.env.example
@@ -226,6 +226,9 @@ RUNTIME_CONTRACT_ENFORCE=false
 # Health endpoint memo cache TTL in seconds
 HEALTH_MEMO_TTL_SECONDS=5
 
+# Reject history options API cache TTL in seconds (default: 14400 = 4 hours)
+REJECT_HISTORY_OPTIONS_CACHE_TTL_SECONDS=14400
+
 # ============================================================
 # Runtime Resilience Diagnostics Thresholds
 # ============================================================
diff --git a/frontend/src/core/reject-history-filters.js b/frontend/src/core/reject-history-filters.js
new file mode 100644
index 0000000..fde98d2
--- /dev/null
+++ b/frontend/src/core/reject-history-filters.js
@@ -0,0 +1,151 @@
+function normalizeText(value) {
+  if (value === null || value === undefined) {
+    return '';
+  }
+  return String(value).trim();
+}
+
+function normalizeArray(values) {
+  if (!Array.isArray(values)) {
+    return [];
+  }
+  const seen = new Set();
+  const result = [];
+  for (const item of values) {
+    const text = normalizeText(item);
+    if (!text || seen.has(text)) {
+      continue;
+    }
+    seen.add(text);
+    result.push(text);
+  }
+  return result;
+}
+
+function normalizeBoolean(value, fallback = false) {
+  if (value === undefined) {
+    return fallback;
+  }
+  return Boolean(value);
+}
+
+export function toRejectFilterSnapshot(input = {}) {
+  return {
+    startDate: normalizeText(input.startDate),
+    endDate: normalizeText(input.endDate),
+    workcenterGroups: normalizeArray(input.workcenterGroups),
+    packages: normalizeArray(input.packages),
+    reason: normalizeText(input.reason),
+    includeExcludedScrap: normalizeBoolean(input.includeExcludedScrap, false),
+    excludeMaterialScrap: normalizeBoolean(input.excludeMaterialScrap, true),
+    excludePbDiode: normalizeBoolean(input.excludePbDiode, true),
+    paretoTop80: normalizeBoolean(input.paretoTop80, true),
+  };
+}
+
+export function extractWorkcenterGroupValues(options = []) {
+  if (!Array.isArray(options)) {
+    return [];
+  }
+  const values = [];
+  const seen = new Set();
+  for (const option of options) {
+    let value = '';
+    if (option && typeof option === 'object') {
+      value = normalizeText(option.name || option.value || option.label);
+    } else {
+      value = normalizeText(option);
+    }
+    if (!value || seen.has(value)) {
+      continue;
+    }
+    seen.add(value);
+    values.push(value);
+  }
+  return values;
+}
+
+export function pruneRejectFilterSelections(filters = {}, options = {}) {
+  const next = toRejectFilterSnapshot(filters);
+  const hasWorkcenterOptions = Array.isArray(options.workcenterGroups);
+  const hasPackageOptions = Array.isArray(options.packages);
+  const hasReasonOptions = Array.isArray(options.reasons);
+  const validWorkcenters = new Set(extractWorkcenterGroupValues(options.workcenterGroups || []));
+  const validPackages = new Set(normalizeArray(options.packages));
+  const validReasons = new Set(normalizeArray(options.reasons));
+
+  const removed = {
+    workcenterGroups: [],
+    packages: [],
+    reason: '',
+  };
+
+  if (hasWorkcenterOptions) {
+    next.workcenterGroups = next.workcenterGroups.filter((value) => {
+      if (validWorkcenters.has(value)) {
+        return true;
+      }
+      removed.workcenterGroups.push(value);
+      return false;
+    });
+  }
+
+  if (hasPackageOptions) {
+    next.packages = next.packages.filter((value) => {
+      if (validPackages.has(value)) {
+        return true;
+      }
+      removed.packages.push(value);
+      return false;
+    });
+  }
+
+  if (next.reason && hasReasonOptions && !validReasons.has(next.reason)) {
+    removed.reason = next.reason;
+    next.reason = '';
+  }
+
+  return {
+    filters: next,
+    removed,
+    removedCount:
+      removed.workcenterGroups.length +
+      removed.packages.length +
+      (removed.reason ? 1 : 0),
+  };
+}
+
+export function buildRejectOptionsRequestParams(filters = {}) {
+  const next = toRejectFilterSnapshot(filters);
+  const params = {
+    start_date: next.startDate,
+    end_date: next.endDate,
+    workcenter_groups: next.workcenterGroups,
+    packages: next.packages,
+    include_excluded_scrap: next.includeExcludedScrap,
+    exclude_material_scrap: next.excludeMaterialScrap,
+    exclude_pb_diode: next.excludePbDiode,
+  };
+  if (next.reason) {
+    params.reason = next.reason;
+  }
+  return params;
+}
+
+export function buildRejectCommonQueryParams(filters = {}, { reason = '' } = {}) {
+  const next = toRejectFilterSnapshot(filters);
+  const params = {
+    start_date: next.startDate,
+    end_date: next.endDate,
+    workcenter_groups: next.workcenterGroups,
+    packages: next.packages,
+    include_excluded_scrap: next.includeExcludedScrap,
+    exclude_material_scrap: next.excludeMaterialScrap,
+    exclude_pb_diode: next.excludePbDiode,
+  };
+  const effectiveReason = normalizeText(reason) || next.reason;
+  if (effectiveReason) {
+    params.reasons = [effectiveReason];
+  }
+  return params;
+}
diff --git a/frontend/src/core/resource-history-filters.js b/frontend/src/core/resource-history-filters.js
new file mode 100644
index 0000000..6e198b5
--- /dev/null
+++ b/frontend/src/core/resource-history-filters.js
@@ -0,0 +1,159 @@
+function normalizeText(value) {
+  if (value === null || value === undefined) {
+    return '';
+  }
+  return String(value).trim();
+}
+
+function normalizeBoolean(value, fallback = false) {
+  if (value === undefined) {
+    return fallback;
+  }
+  return Boolean(value);
+}
+
+function normalizeArray(values) {
+  if (!Array.isArray(values)) {
+    return [];
+  }
+  const seen = new Set();
+  const result = [];
+  for (const item of values) {
+    const text = normalizeText(item);
+    if (!text || seen.has(text)) {
+      continue;
+    }
+    seen.add(text);
+    result.push(text);
+  }
+  return result;
+}
+
+function applyUpstreamResourceFilters(resources, filters) {
+  let list = Array.isArray(resources) ? resources : [];
+  const groups = new Set(normalizeArray(filters.workcenterGroups));
+
+  if (groups.size > 0) {
+    list = list.filter((resource) => groups.has(normalizeText(resource.workcenterGroup)));
+  }
+  if (filters.isProduction) {
+    list = list.filter((resource) => Boolean(resource.isProduction));
+  }
+  if (filters.isKey) {
+    list = list.filter((resource) => Boolean(resource.isKey));
+  }
+  if (filters.isMonitor) {
+    list = list.filter((resource) => Boolean(resource.isMonitor));
+  }
+
+  return list;
+}
+
+export function toResourceFilterSnapshot(input = {}) {
+  return {
+    startDate: normalizeText(input.startDate),
+    endDate: normalizeText(input.endDate),
+    granularity: normalizeText(input.granularity) || 'day',
+    workcenterGroups: normalizeArray(input.workcenterGroups),
+    families: normalizeArray(input.families),
+    machines: normalizeArray(input.machines),
+    isProduction: normalizeBoolean(input.isProduction, false),
+    isKey: normalizeBoolean(input.isKey, false),
+    isMonitor: normalizeBoolean(input.isMonitor, false),
+  };
+}
+
+export function deriveResourceFamilyOptions(resources = [], filters = {}) {
+  const next = toResourceFilterSnapshot(filters);
+  const filtered = applyUpstreamResourceFilters(resources, next);
+  const families = new Set();
+  for (const resource of filtered) {
+    const value = normalizeText(resource.family);
+    if (value) {
+      families.add(value);
+    }
+  }
+  return [...families].sort((left, right) => left.localeCompare(right));
+}
+
+export function deriveResourceMachineOptions(resources = [], filters = {}) {
+  const next = toResourceFilterSnapshot(filters);
+  let filtered = applyUpstreamResourceFilters(resources, next);
+  const families = new Set(next.families);
+  if (families.size > 0) {
+    filtered = filtered.filter((resource) => families.has(normalizeText(resource.family)));
+  }
+
+  return filtered
+    .map((resource) => ({
+      label: normalizeText(resource.name),
+      value: normalizeText(resource.id),
+    }))
+    .filter((option) => option.label && option.value)
+    .sort((left, right) => left.label.localeCompare(right.label));
+}
+
+export function pruneResourceFilterSelections(filters = {}, { familyOptions = [], machineOptions = [] } = {}) {
+  const next = toResourceFilterSnapshot(filters);
+  const hasFamilyOptions = Array.isArray(familyOptions);
+  const hasMachineOptions = Array.isArray(machineOptions);
+  const validFamilies = new Set(normalizeArray(familyOptions));
+  const validMachines = new Set(
+    (Array.isArray(machineOptions) ? machineOptions : [])
+      .map((option) => normalizeText(option?.value))
+      .filter(Boolean)
+  );
+
+  const removed = {
+    families: [],
+    machines: [],
+  };
+
+  if (hasFamilyOptions) {
+    next.families = next.families.filter((value) => {
+      if (validFamilies.has(value)) {
+        return true;
+      }
+      removed.families.push(value);
+      return false;
+    });
+  }
+
+  if (hasMachineOptions) {
+    next.machines = next.machines.filter((value) => {
+      if (validMachines.has(value)) {
+        return true;
+      }
+      removed.machines.push(value);
+      return false;
+    });
+  }
+
+  return {
+    filters: next,
+    removed,
+    removedCount: removed.families.length + removed.machines.length,
+  };
+}
+
+export function buildResourceHistoryQueryParams(filters = {}) {
+  const next = toResourceFilterSnapshot(filters);
+  const params = {
+    start_date: next.startDate,
+    end_date: next.endDate,
+    granularity: next.granularity,
+    workcenter_groups: next.workcenterGroups,
+    families: next.families,
+    resource_ids: next.machines,
+  };
+  if (next.isProduction) {
+    params.is_production = '1';
+  }
+  if (next.isKey) {
+    params.is_key = '1';
+  }
+  if (next.isMonitor) {
+    params.is_monitor = '1';
+  }
+  return params;
+}
diff --git a/frontend/src/reject-history/App.vue b/frontend/src/reject-history/App.vue
index 705634b..1fea5d9 100644
--- a/frontend/src/reject-history/App.vue
+++ b/frontend/src/reject-history/App.vue
@@ -1,7 +1,13 @@
 <script setup>
-import { computed, onMounted, reactive, ref } from 'vue';
+import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue';
 
 import { apiGet } from '../core/api.js';
+import {
+  buildRejectCommonQueryParams,
+  buildRejectOptionsRequestParams,
+  pruneRejectFilterSelections,
+  toRejectFilterSnapshot,
+} from '../core/reject-history-filters.js';
 import { replaceRuntimeHistory } from '../core/shell-navigation.js';
 
 import DetailTable from './components/DetailTable.vue';
@@ -12,18 +18,19 @@ import TrendChart from './components/TrendChart.vue';
 
 const API_TIMEOUT = 60000;
 const DEFAULT_PER_PAGE = 50;
+const OPTIONS_DEBOUNCE_MS = 300;
 
-const filters = reactive({
-  startDate: '',
-  endDate: '',
-  workcenterGroups: [],
-  packages: [],
-  reason: '',
-  includeExcludedScrap: false,
-  excludeMaterialScrap: true,
-  excludePbDiode: true,
-  paretoTop80: true,
-});
+function createDefaultFilters() {
+  return toRejectFilterSnapshot({
+    includeExcludedScrap: false,
+    excludeMaterialScrap: true,
+    excludePbDiode: true,
+    paretoTop80: true,
+  });
+}
+
+const draftFilters = reactive(createDefaultFilters());
+const committedFilters = reactive(createDefaultFilters());
 
 const page = ref(1);
 const detailReason = ref('');
@@ -67,6 +74,7 @@ const loading = reactive({
 });
 
 const errorMessage = ref('');
+const autoPruneHint = ref('');
 const lastQueryAt = ref('');
 const lastPolicyMeta = ref({
   include_excluded_scrap: false,
@@ -74,15 +82,30 @@ const lastPolicyMeta = ref({
   excluded_reason_count: 0,
 });
 
-let activeRequestId = 0;
+const draftWatchReady = ref(false);
 
-function nextRequestId() {
-  activeRequestId += 1;
-  return activeRequestId;
+let activeDataRequestId = 0;
+let activeOptionsRequestId = 0;
+let optionsDebounceHandle = null;
+let suppressDraftOptionReload = false;
+let lastLoadedOptionsSignature = '';
+
+function nextDataRequestId() {
+  activeDataRequestId += 1;
+  return activeDataRequestId;
 }
 
-function isStaleRequest(requestId) {
-  return requestId !== activeRequestId;
+function isStaleDataRequest(requestId) {
+  return requestId !== activeDataRequestId;
+}
+
+function nextOptionsRequestId() {
+  activeOptionsRequestId += 1;
+  return activeOptionsRequestId;
+}
+
+function isStaleOptionsRequest(requestId) {
+  return requestId !== activeOptionsRequestId;
 }
 
 function toDateString(value) {
@@ -92,14 +115,42 @@ function toDateString(value) {
   return `${y}-${m}-${d}`;
 }
 
-function setDefaultDateRange() {
+function setDefaultDateRange(target) {
   const today = new Date();
   const end = new Date(today);
   end.setDate(end.getDate() - 1);
   const start = new Date(end);
   start.setDate(start.getDate() - 29);
-  filters.startDate = toDateString(start);
-  filters.endDate = toDateString(end);
+  target.startDate = toDateString(start);
+  target.endDate = toDateString(end);
+}
+
+function assignFilterState(target, source) {
+  const snapshot = toRejectFilterSnapshot(source);
+  target.startDate = snapshot.startDate;
+  target.endDate = snapshot.endDate;
+  target.workcenterGroups = [...snapshot.workcenterGroups];
+  target.packages = [...snapshot.packages];
+  target.reason = snapshot.reason;
+  target.includeExcludedScrap = snapshot.includeExcludedScrap;
+  target.excludeMaterialScrap = snapshot.excludeMaterialScrap;
+  target.excludePbDiode = snapshot.excludePbDiode;
+  target.paretoTop80 = snapshot.paretoTop80;
+}
+
+function resetToDefaultFilters(target) {
+  const defaults = createDefaultFilters();
+  setDefaultDateRange(defaults);
+  assignFilterState(target, defaults);
+}
+
+function runWithDraftReloadSuppressed(callback) {
+  suppressDraftOptionReload = true;
+  try {
+    callback();
+  } finally {
+    suppressDraftOptionReload = false;
+  }
 }
 
 function readArrayParam(params, key) {
@@ -121,29 +172,29 @@ function readBooleanParam(params, key, defaultValue = false) {
   return ['1', 'true', 'yes', 'y', 'on'].includes(value);
 }
 
-function restoreFromUrl() {
+function restoreCommittedFiltersFromUrl() {
   const params = new URLSearchParams(window.location.search);
   const startDate = String(params.get('start_date') || '').trim();
   const endDate = String(params.get('end_date') || '').trim();
 
   if (startDate && endDate) {
-    filters.startDate = startDate;
-    filters.endDate = endDate;
+    committedFilters.startDate = startDate;
+    committedFilters.endDate = endDate;
   }
 
   const wcGroups = readArrayParam(params, 'workcenter_groups');
   if (wcGroups.length > 0) {
-    filters.workcenterGroups = wcGroups;
+    committedFilters.workcenterGroups = wcGroups;
   }
 
   const packages = readArrayParam(params, 'packages');
   if (packages.length > 0) {
-    filters.packages = packages;
+    committedFilters.packages = packages;
   }
 
   const reason = String(params.get('reason') || '').trim();
   if (reason) {
-    filters.reason = reason;
+    committedFilters.reason = reason;
   }
   const detailReasonFromUrl = String(params.get('detail_reason') || '').trim();
   if (detailReasonFromUrl) {
@@ -154,38 +205,44 @@ function restoreFromUrl() {
     selectedTrendDates.value = trendDates;
   }
 
-  filters.includeExcludedScrap = readBooleanParam(params, 'include_excluded_scrap', false);
-  filters.excludeMaterialScrap = readBooleanParam(params, 'exclude_material_scrap', true);
-  filters.excludePbDiode = readBooleanParam(params, 'exclude_pb_diode', true);
-  filters.paretoTop80 = !readBooleanParam(params, 'pareto_scope_all', false);
+  committedFilters.includeExcludedScrap = readBooleanParam(params, 'include_excluded_scrap', false);
+  committedFilters.excludeMaterialScrap = readBooleanParam(params, 'exclude_material_scrap', true);
+  committedFilters.excludePbDiode = readBooleanParam(params, 'exclude_pb_diode', true);
+  committedFilters.paretoTop80 = !readBooleanParam(params, 'pareto_scope_all', false);
 
   const parsedPage = Number(params.get('page') || '1');
   page.value = Number.isFinite(parsedPage) && parsedPage > 0 ? parsedPage : 1;
 }
 
+function appendArrayParams(params, key, values) {
+  for (const value of values || []) {
+    params.append(key, value);
+  }
+}
+
 function updateUrlState() {
   const params = new URLSearchParams();
 
-  params.set('start_date', filters.startDate);
-  params.set('end_date', filters.endDate);
-  filters.workcenterGroups.forEach((item) => params.append('workcenter_groups', item));
-  filters.packages.forEach((item) => params.append('packages', item));
+  params.set('start_date', committedFilters.startDate);
+  params.set('end_date', committedFilters.endDate);
+  appendArrayParams(params, 'workcenter_groups', committedFilters.workcenterGroups);
+  appendArrayParams(params, 'packages', committedFilters.packages);
 
-  if (filters.reason) {
-    params.set('reason', filters.reason);
+  if (committedFilters.reason) {
+    params.set('reason', committedFilters.reason);
   }
   if (detailReason.value) {
     params.set('detail_reason', detailReason.value);
   }
-  selectedTrendDates.value.forEach((d) => params.append('trend_dates', d));
+  appendArrayParams(params, 'trend_dates', selectedTrendDates.value);
 
-  if (filters.includeExcludedScrap) {
+  if (committedFilters.includeExcludedScrap) {
     params.set('include_excluded_scrap', 'true');
   }
-  params.set('exclude_material_scrap', String(filters.excludeMaterialScrap));
-  params.set('exclude_pb_diode', String(filters.excludePbDiode));
+  params.set('exclude_material_scrap', String(committedFilters.excludeMaterialScrap));
+  params.set('exclude_pb_diode', String(committedFilters.excludePbDiode));
 
-  if (!filters.paretoTop80) {
+  if (!committedFilters.paretoTop80) {
     params.set('pareto_scope_all', 'true');
   }
 
@@ -206,26 +263,12 @@ function unwrapApiResult(result, fallbackMessage) {
   return result;
 }
 
-function buildCommonParams({ reason = filters.reason } = {}) {
-  const params = {
-    start_date: filters.startDate,
-    end_date: filters.endDate,
-    workcenter_groups: filters.workcenterGroups,
-    packages: filters.packages,
-    include_excluded_scrap: filters.includeExcludedScrap,
-    exclude_material_scrap: filters.excludeMaterialScrap,
-    exclude_pb_diode: filters.excludePbDiode,
-  };
-
-  if (reason) {
-    params.reasons = [reason];
-  }
-
-  return params;
+function buildCommonParams({ reason = committedFilters.reason } = {}) {
+  return buildRejectCommonQueryParams(committedFilters, { reason });
 }
 
 function buildListParams() {
-  const effectiveReason = detailReason.value || filters.reason;
+  const effectiveReason = detailReason.value || committedFilters.reason;
   const params = {
     ...buildCommonParams({ reason: effectiveReason }),
     page: page.value,
@@ -239,15 +282,9 @@ function buildListParams() {
   return params;
 }
 
-async function fetchOptions() {
+async function fetchDraftOptions() {
   const response = await apiGet('/api/reject-history/options', {
-    params: {
-      start_date: filters.startDate,
-      end_date: filters.endDate,
-      include_excluded_scrap: filters.includeExcludedScrap,
-      exclude_material_scrap: filters.excludeMaterialScrap,
-      exclude_pb_diode: filters.excludePbDiode,
-    },
+    params: buildRejectOptionsRequestParams(draftFilters),
     timeout: API_TIMEOUT,
   });
   const payload = unwrapApiResult(response, '載入篩選選項失敗');
@@ -283,38 +320,145 @@ function mergePolicyMeta(meta) {
   };
 }
 
-function normalizeFiltersByOptions() {
-  if (filters.reason && !options.reasons.includes(filters.reason)) {
-    filters.reason = '';
-  }
+function applyOptionsPayload(payload) {
+  options.workcenterGroups = Array.isArray(payload?.workcenter_groups)
+    ? payload.workcenter_groups
+    : [];
+  options.reasons = Array.isArray(payload?.reasons)
+    ? payload.reasons
+    : [];
+  options.packages = Array.isArray(payload?.packages)
+    ? payload.packages
+    : [];
+}
 
-  if (filters.packages.length > 0) {
-    const packageSet = new Set(options.packages);
-    filters.packages = filters.packages.filter((pkg) => packageSet.has(pkg));
+function formatPruneHint(removed) {
+  const parts = [];
+  if (removed.workcenterGroups.length > 0) {
+    parts.push(`WORKCENTER GROUP: ${removed.workcenterGroups.join(', ')}`);
+  }
+  if (removed.packages.length > 0) {
+    parts.push(`Package: ${removed.packages.join(', ')}`);
+  }
+  if (removed.reason) {
+    parts.push(`原因: ${removed.reason}`);
+  }
+  if (parts.length === 0) {
+    return '';
+  }
+  return `已自動清除失效篩選：${parts.join('；')}`;
+}
+
+function pruneDraftByCurrentOptions({ showHint = true } = {}) {
+  const result = pruneRejectFilterSelections(draftFilters, options);
+  if (result.removedCount > 0) {
+    runWithDraftReloadSuppressed(() => {
+      assignFilterState(draftFilters, result.filters);
+    });
+    if (showHint) {
+      autoPruneHint.value = formatPruneHint(result.removed);
+    }
+  }
+  return result;
+}
+
+function commitDraftFilters() {
+  const result = pruneDraftByCurrentOptions({ showHint: true });
+  assignFilterState(committedFilters, draftFilters);
+  return result;
+}
+
+function clearOptionsDebounce() {
+  if (optionsDebounceHandle) {
+    clearTimeout(optionsDebounceHandle);
+    optionsDebounceHandle = null;
   }
 }
 
-async function loadAllData({ loadOptions = true } = {}) {
-  const requestId = nextRequestId();
+async function reloadDraftOptions() {
+  if (!draftFilters.startDate || !draftFilters.endDate) {
+    return;
+  }
+  const signature = draftOptionsSignature.value;
+  const requestId = nextOptionsRequestId();
+  loading.options = true;
+
+  try {
+    const payload = await fetchDraftOptions();
+    if (isStaleOptionsRequest(requestId)) {
+      return;
+    }
+
+    applyOptionsPayload(payload);
+    lastLoadedOptionsSignature = signature;
+    const pruneResult = pruneDraftByCurrentOptions({ showHint: true });
+    if (pruneResult.removedCount > 0) {
+      scheduleOptionsReload();
+    }
+  } catch (error) {
+    if (isStaleOptionsRequest(requestId)) {
+      return;
+    }
+    errorMessage.value = error?.message || '載入篩選選項失敗';
+  } finally {
+    if (isStaleOptionsRequest(requestId)) {
+      return;
+    }
+    loading.options = false;
+  }
+}
+
+function scheduleOptionsReload() {
+  if (!draftWatchReady.value || suppressDraftOptionReload) {
+    return;
+  }
+  clearOptionsDebounce();
+  optionsDebounceHandle = setTimeout(() => {
+    optionsDebounceHandle = null;
+    void reloadDraftOptions();
+  }, OPTIONS_DEBOUNCE_MS);
+}
+
+const draftOptionsSignature = computed(() => {
+  return JSON.stringify({
+    startDate: draftFilters.startDate,
+    endDate: draftFilters.endDate,
+    workcenterGroups: draftFilters.workcenterGroups,
+    packages: draftFilters.packages,
+    reason: draftFilters.reason,
+    includeExcludedScrap: draftFilters.includeExcludedScrap,
+    excludeMaterialScrap: draftFilters.excludeMaterialScrap,
+    excludePbDiode: draftFilters.excludePbDiode,
+  });
+});
+
+watch(draftOptionsSignature, () => {
+  scheduleOptionsReload();
+});
+
+async function ensureDraftOptionsFresh() {
+  clearOptionsDebounce();
+  const signature = draftOptionsSignature.value;
+  if (signature !== lastLoadedOptionsSignature) {
+    await reloadDraftOptions();
+    return;
+  }
+  pruneDraftByCurrentOptions({ showHint: true });
+}
+
+async function loadDataSections() {
+  const requestId = nextDataRequestId();
 
   loading.querying = true;
   loading.list = true;
   errorMessage.value = '';
 
   try {
-    const tasks = [fetchAnalytics(), fetchList()];
-    if (loadOptions) {
-      loading.options = true;
-      tasks.push(fetchOptions());
-    }
-
-    const responses = await Promise.all(tasks);
-    if (isStaleRequest(requestId)) {
+    const [analyticsResp, listResp] = await Promise.all([fetchAnalytics(), fetchList()]);
+    if (isStaleDataRequest(requestId)) {
       return;
     }
 
-    const [analyticsResp, listResp, optionsResp] = responses;
-
     const analyticsData = analyticsResp.data || {};
     summary.value = analyticsData.summary || summary.value;
     trend.value = analyticsData.trend || trend.value;
@@ -327,83 +471,70 @@ async function loadAllData({ loadOptions = true } = {}) {
     };
     mergePolicyMeta(meta);
 
-    if (loadOptions && optionsResp) {
-      options.workcenterGroups = Array.isArray(optionsResp.workcenter_groups)
-        ? optionsResp.workcenter_groups
-        : [];
-      options.reasons = Array.isArray(optionsResp.reasons)
-        ? optionsResp.reasons
-        : [];
-      options.packages = Array.isArray(optionsResp.packages)
-        ? optionsResp.packages
-        : [];
-      normalizeFiltersByOptions();
-    }
-
     lastQueryAt.value = new Date().toLocaleString('zh-TW');
     updateUrlState();
   } catch (error) {
-    if (isStaleRequest(requestId)) {
+    if (isStaleDataRequest(requestId)) {
       return;
     }
     errorMessage.value = error?.message || '載入資料失敗';
   } finally {
-    if (isStaleRequest(requestId)) {
+    if (isStaleDataRequest(requestId)) {
       return;
     }
     loading.initial = false;
     loading.querying = false;
-    loading.options = false;
     loading.list = false;
   }
 }
 
 async function loadListOnly() {
-  const requestId = nextRequestId();
+  const requestId = nextDataRequestId();
   loading.list = true;
   errorMessage.value = '';
 
   try {
     const listResp = await fetchList();
-    if (isStaleRequest(requestId)) {
+    if (isStaleDataRequest(requestId)) {
       return;
     }
     detail.value = listResp.data || detail.value;
     mergePolicyMeta(listResp.meta || {});
     updateUrlState();
   } catch (error) {
-    if (isStaleRequest(requestId)) {
+    if (isStaleDataRequest(requestId)) {
       return;
     }
     errorMessage.value = error?.message || '載入明細資料失敗';
   } finally {
-    if (isStaleRequest(requestId)) {
+    if (isStaleDataRequest(requestId)) {
       return;
     }
     loading.list = false;
   }
 }
 
-function applyFilters() {
+async function applyFilters() {
   page.value = 1;
   detailReason.value = '';
   selectedTrendDates.value = [];
-  void loadAllData({ loadOptions: true });
+  await ensureDraftOptionsFresh();
+  commitDraftFilters();
+  await loadDataSections();
 }
 
-function clearFilters() {
-  setDefaultDateRange();
-  filters.workcenterGroups = [];
-  filters.packages = [];
-  filters.reason = '';
+async function clearFilters() {
+  runWithDraftReloadSuppressed(() => {
+    resetToDefaultFilters(draftFilters);
+  });
+  autoPruneHint.value = '';
   detailReason.value = '';
   selectedTrendDates.value = [];
-  filters.includeExcludedScrap = false;
-  filters.excludeMaterialScrap = true;
-  filters.excludePbDiode = true;
-  filters.paretoTop80 = true;
   page.value = 1;
-  void loadAllData({ loadOptions: true });
+  lastLoadedOptionsSignature = '';
+  await ensureDraftOptionsFresh();
+  commitDraftFilters();
+  await loadDataSections();
 }
 
 function goToPage(nextPage) {
@@ -443,54 +574,70 @@ function onParetoClick(reason) {
 }
 
 function handleParetoScopeToggle(checked) {
-  filters.paretoTop80 = Boolean(checked);
+  const value = Boolean(checked);
+  runWithDraftReloadSuppressed(() => {
+    draftFilters.paretoTop80 = value;
+  });
+  committedFilters.paretoTop80 = value;
   updateUrlState();
 }
 
-function removeFilterChip(chip) {
+async function removeFilterChip(chip) {
   if (!chip?.removable) {
     return;
   }
 
-  if (chip.type === 'reason') {
-    filters.reason = '';
-    detailReason.value = '';
-  } else if (chip.type === 'workcenter') {
-    filters.workcenterGroups = filters.workcenterGroups.filter((item) => item !== chip.value);
-  } else if (chip.type === 'package') {
-    filters.packages = filters.packages.filter((item) => item !== chip.value);
-  } else if (chip.type === 'detail-reason') {
+  if (chip.type === 'detail-reason') {
     detailReason.value = '';
     page.value = 1;
-    void loadListOnly();
+    await loadListOnly();
     return;
-  } else if (chip.type === 'trend-dates') {
+  }
+
+  if (chip.type === 'trend-dates') {
     selectedTrendDates.value = [];
     page.value = 1;
-    void loadListOnly();
+    await loadListOnly();
     return;
+  }
+
+  const nextFilters = toRejectFilterSnapshot(committedFilters);
+  if (chip.type === 'reason') {
+    nextFilters.reason = '';
+    detailReason.value = '';
+  } else if (chip.type === 'workcenter') {
+    nextFilters.workcenterGroups = nextFilters.workcenterGroups.filter((item) => item !== chip.value);
+  } else if (chip.type === 'package') {
+    nextFilters.packages = nextFilters.packages.filter((item) => item !== chip.value);
   } else {
     return;
   }
 
+  runWithDraftReloadSuppressed(() => {
+    assignFilterState(draftFilters, nextFilters);
+  });
+  assignFilterState(committedFilters, nextFilters);
+
   page.value = 1;
-  void loadAllData({ loadOptions: false });
+  lastLoadedOptionsSignature = '';
+  await ensureDraftOptionsFresh();
+  commitDraftFilters();
+  await loadDataSections();
 }
 
 function exportCsv() {
+  const effectiveReason = detailReason.value || committedFilters.reason;
+  const queryParams = buildRejectCommonQueryParams(committedFilters, { reason: effectiveReason });
   const params = new URLSearchParams();
-  params.set('start_date', filters.startDate);
-  params.set('end_date', filters.endDate);
-  params.set('include_excluded_scrap', String(filters.includeExcludedScrap));
-  params.set('exclude_material_scrap', String(filters.excludeMaterialScrap));
-  params.set('exclude_pb_diode', String(filters.excludePbDiode));
 
-  filters.workcenterGroups.forEach((item) => params.append('workcenter_groups', item));
-  filters.packages.forEach((item) => params.append('packages', item));
-  const effectiveReason = detailReason.value || filters.reason;
-  if (effectiveReason) {
-    params.append('reasons', effectiveReason);
-  }
+  params.set('start_date', queryParams.start_date);
+  params.set('end_date', queryParams.end_date);
+  params.set('include_excluded_scrap', String(queryParams.include_excluded_scrap));
+  params.set('exclude_material_scrap', String(queryParams.exclude_material_scrap));
+  params.set('exclude_pb_diode', String(queryParams.exclude_pb_diode));
+  appendArrayParams(params, 'workcenter_groups', queryParams.workcenter_groups || []);
+  appendArrayParams(params, 'packages', queryParams.packages || []);
+  appendArrayParams(params, 'reasons', queryParams.reasons || []);
 
   window.location.href = `/api/reject-history/export?${params.toString()}`;
 }
@@ -571,7 +718,7 @@ const allParetoItems = computed(() => {
 
 const filteredParetoItems = computed(() => {
   const items = allParetoItems.value || [];
-  if (!filters.paretoTop80 || items.length === 0) {
+  if (!committedFilters.paretoTop80 || items.length === 0) {
     return items;
   }
   const top = items.filter((item) => Number(item.cumPct || 0) <= 80);
@@ -582,41 +729,41 @@ const activeFilterChips = computed(() => {
   const chips = [
     {
       key: 'date-range',
-      label: `日期: ${filters.startDate || '-'} ~ ${filters.endDate || '-'}`,
+      label: `日期: ${committedFilters.startDate || '-'} ~ ${committedFilters.endDate || '-'}`,
       removable: false,
       type: 'date',
       value: '',
     },
     {
       key: 'policy-mode',
-      label: filters.includeExcludedScrap ? '政策: 納入不計良率報廢' : '政策: 排除不計良率報廢',
+      label: committedFilters.includeExcludedScrap ? '政策: 納入不計良率報廢' : '政策: 排除不計良率報廢',
       removable: false,
       type: 'policy',
       value: '',
     },
     {
       key: 'material-policy-mode',
-      label: filters.excludeMaterialScrap ? '原物料: 已排除' : '原物料: 已納入',
+      label: committedFilters.excludeMaterialScrap ? '原物料: 已排除' : '原物料: 已納入',
       removable: false,
       type: 'policy',
       value: '',
     },
     {
       key: 'pb-diode-policy',
-      label: filters.excludePbDiode ? 'PB_Diode: 已排除' : 'PB_Diode: 已納入',
+      label: committedFilters.excludePbDiode ? 'PB_Diode: 已排除' : 'PB_Diode: 已納入',
       removable: false,
       type: 'policy',
       value: '',
     },
   ];
 
-  if (filters.reason) {
+  if (committedFilters.reason) {
     chips.push({
-      key: `reason:${filters.reason}`,
-      label: `原因: ${filters.reason}`,
+      key: `reason:${committedFilters.reason}`,
+      label: `原因: ${committedFilters.reason}`,
       removable: true,
       type: 'reason',
-      value: filters.reason,
+      value: committedFilters.reason,
     });
   }
   if (selectedTrendDates.value.length > 0) {
@@ -642,7 +789,7 @@ const activeFilterChips = computed(() => {
     });
   }
 
-  filters.workcenterGroups.forEach((group) => {
+  committedFilters.workcenterGroups.forEach((group) => {
     chips.push({
       key: `workcenter:${group}`,
       label: `WC: ${group}`,
@@ -652,7 +799,7 @@ const activeFilterChips = computed(() => {
     });
   });
 
-  filters.packages.forEach((pkg) => {
+  committedFilters.packages.forEach((pkg) => {
     chips.push({
       key: `package:${pkg}`,
       label: `Package: ${pkg}`,
@@ -683,10 +830,22 @@ const pagination = computed(() => detail.value?.pagination || {
   totalPages: 1,
 });
 
-onMounted(() => {
-  setDefaultDateRange();
-  restoreFromUrl();
-  void loadAllData({ loadOptions: true });
+onMounted(async () => {
+  resetToDefaultFilters(committedFilters);
+  restoreCommittedFiltersFromUrl();
+  runWithDraftReloadSuppressed(() => {
+    assignFilterState(draftFilters, committedFilters);
+  });
+
+  lastLoadedOptionsSignature = '';
+  await reloadDraftOptions();
+  commitDraftFilters();
+  draftWatchReady.value = true;
+  await loadDataSections();
+});
+
+onBeforeUnmount(() => {
+  clearOptionsDebounce();
 });
 </script>
 
@@ -698,14 +857,15 @@ onMounted(() => {
       </div>
       <div class="header-right">
         <div class="last-update" v-if="lastQueryAt">更新時間：{{ lastQueryAt }}</div>
-        <button type="button" class="btn btn-light" :disabled="loading.querying" @click="applyFilters">重新整理</button>
+        <button type="button" class="btn btn-light" :disabled="loading.querying || loading.options" @click="applyFilters">重新整理</button>
       </div>
     </header>
 
     <div v-if="errorMessage" class="error-banner">{{ errorMessage }}</div>
+    <div v-if="autoPruneHint" class="filter-indicator">{{ autoPruneHint }}</div>
 
     <FilterPanel
-      :filters="filters"
+      :filters="draftFilters"
       :options="options"
       :loading="loading"
       :active-filter-chips="activeFilterChips"
diff --git a/frontend/src/reject-history/components/DetailTable.vue b/frontend/src/reject-history/components/DetailTable.vue
index 50681c6..04f94c6 100644
--- a/frontend/src/reject-history/components/DetailTable.vue
+++ b/frontend/src/reject-history/components/DetailTable.vue
@@ -1,4 +1,6 @@
 <script setup>
+import { ref } from 'vue';
+
 defineProps({
   items: { type: Array, default: () => [] },
   pagination: {
@@ -11,6 +13,8 @@ defineProps({
 
 defineEmits(['go-to-page', 'clear-reason']);
 
+const showRejectBreakdown = ref(false);
+
 function formatNumber(value) {
   return Number(value || 0).toLocaleString('zh-TW');
 }
@@ -31,45 +35,49 @@ function formatNumber(value) {
       <table class="detail-table">
         <thead>
           <tr>
-            <th>日期</th>
             <th>LOT</th>
-            <th>WORKCENTER_GROUP</th>
             <th>WORKCENTER</th>
             <th>Package</th>
-            <th>PJ_TYPE</th>
-            <th>PJ_FUNCTION</th>
+            <th>FUNCTION</th>
+            <th class="col-left">TYPE</th>
             <th>PRODUCT</th>
             <th>原因</th>
-            <th>扣帳報廢量</th>
+            <th class="th-expandable" @click="showRejectBreakdown = !showRejectBreakdown">
+              扣帳報廢量 <span class="expand-icon">{{ showRejectBreakdown ? '▾' : '▸' }}</span>
+            </th>
+            <template v-if="showRejectBreakdown">
+              <th class="th-sub">REJECT</th>
+              <th class="th-sub">STANDBY</th>
+              <th class="th-sub">QTYTOPROCESS</th>
+              <th class="th-sub">INPROCESS</th>
+              <th class="th-sub">PROCESSED</th>
+            </template>
             <th>不扣帳報廢量</th>
-            <th>REJECT_QTY</th>
-            <th>STANDBY_QTY</th>
-            <th>QTYTOPROCESS</th>
-            <th>INPROCESS</th>
-            <th>PROCESSED</th>
+            <th>報廢時間</th>
           </tr>
         </thead>
         <tbody>
-          <tr v-for="(row, idx) in items" :key="`${row.TXN_DAY}-${row.WORKCENTERNAME}-${row.CONTAINERNAME}-${row.LOSSREASONNAME}-${idx}`">
-            <td>{{ row.TXN_DAY }}</td>
+          <tr v-for="(row, idx) in items" :key="`${row.TXN_DAY}-${row.CONTAINERNAME}-${row.LOSSREASONNAME}-${idx}`">
             <td>{{ row.CONTAINERNAME || '' }}</td>
-            <td>{{ row.WORKCENTER_GROUP }}</td>
             <td>{{ row.WORKCENTERNAME }}</td>
             <td>{{ row.PRODUCTLINENAME }}</td>
-            <td>{{ row.PJ_TYPE }}</td>
             <td>{{ row.PJ_FUNCTION || '' }}</td>
+            <td class="col-left">{{ row.PJ_TYPE }}</td>
             <td>{{ row.PRODUCTNAME || '' }}</td>
             <td>{{ row.LOSSREASONNAME }}</td>
             <td>{{ formatNumber(row.REJECT_TOTAL_QTY) }}</td>
+            <template v-if="showRejectBreakdown">
+              <td class="td-sub">{{ formatNumber(row.REJECT_QTY) }}</td>
+              <td class="td-sub">{{ formatNumber(row.STANDBY_QTY) }}</td>
+              <td class="td-sub">{{ formatNumber(row.QTYTOPROCESS_QTY) }}</td>
+              <td class="td-sub">{{ formatNumber(row.INPROCESS_QTY) }}</td>
+              <td class="td-sub">{{ formatNumber(row.PROCESSED_QTY) }}</td>
+            </template>
             <td>{{ formatNumber(row.DEFECT_QTY) }}</td>
-            <td>{{ formatNumber(row.REJECT_QTY) }}</td>
-            <td>{{ formatNumber(row.STANDBY_QTY) }}</td>
-            <td>{{ formatNumber(row.QTYTOPROCESS_QTY) }}</td>
-            <td>{{ formatNumber(row.INPROCESS_QTY) }}</td>
-            <td>{{ formatNumber(row.PROCESSED_QTY) }}</td>
+            <td class="cell-nowrap">{{ row.TXN_TIME || row.TXN_DAY }}</td>
           </tr>
           <tr v-if="!items || items.length === 0">
-            <td colspan="16" class="placeholder">No data</td>
+            <td :colspan="showRejectBreakdown ? 15 : 10" class="placeholder">No data</td>
           </tr>
         </tbody>
       </table>
diff --git a/frontend/src/reject-history/style.css b/frontend/src/reject-history/style.css
index 9efcb7f..3751c0a 100644
--- a/frontend/src/reject-history/style.css
+++ b/frontend/src/reject-history/style.css
@@ -266,10 +266,34 @@
   overflow: auto;
 }
 
-.detail-table .cell-wrap {
-  white-space: normal;
-  max-width: 220px;
-  word-break: break-all;
+.detail-table .cell-nowrap {
+  white-space: nowrap;
+}
+
+.detail-table .col-left {
+  text-align: left;
+}
+
+.detail-table .th-expandable {
+  cursor: pointer;
+  user-select: none;
+}
+
+.detail-table .th-expandable:hover {
+  background: #eef2f7;
+}
+
+.detail-table .expand-icon {
+  font-size: 10px;
+  margin-left: 2px;
+  color: #64748b;
+}
+
+.detail-table .th-sub,
+.detail-table .td-sub {
+  background: #f8fafc;
+  font-size: 11px;
+  color: #475569;
 }
 
 .detail-reason-badge {
diff --git a/frontend/src/resource-history/App.vue b/frontend/src/resource-history/App.vue
index eabe87d..52f10da 100644
--- a/frontend/src/resource-history/App.vue
+++ b/frontend/src/resource-history/App.vue
@@ -1,8 +1,15 @@
 <script setup>
-import { computed, onMounted, reactive, ref } from 'vue';
+import { computed, onMounted, reactive, ref, watch } from 'vue';
 
 import { apiGet, ensureMesApiAvailable } from '../core/api.js';
 import { buildResourceKpiFromHours } from '../core/compute.js';
+import {
+  buildResourceHistoryQueryParams,
+  deriveResourceFamilyOptions,
+  deriveResourceMachineOptions,
+  pruneResourceFilterSelections,
+  toResourceFilterSnapshot,
+} from '../core/resource-history-filters.js';
 import { replaceRuntimeHistory } from '../core/shell-navigation.js';
 
 import ComparisonChart from './components/ComparisonChart.vue';
@@ -18,17 +25,20 @@ ensureMesApiAvailable();
 const API_TIMEOUT = 60000;
 const MAX_QUERY_DAYS = 730;
 
-const filters = reactive({
-  startDate: '',
-  endDate: '',
-  granularity: 'day',
-  workcenterGroups: [],
-  families: [],
-  machines: [],
-  isProduction: false,
-  isKey: false,
-  isMonitor: false,
-});
+function createDefaultFilters() {
+  return toResourceFilterSnapshot({
+    granularity: 'day',
+    workcenterGroups: [],
+    families: [],
+    machines: [],
+    isProduction: false,
+    isKey: false,
+    isMonitor: false,
+  });
+}
+
+const draftFilters = reactive(createDefaultFilters());
+const committedFilters = reactive(createDefaultFilters());
 
 const options = reactive({
   workcenterGroups: [],
@@ -54,6 +64,19 @@ const loading = reactive({
 const queryError = ref('');
 const detailWarning = ref('');
 const exportMessage = ref('');
+const autoPruneHint = ref('');
+
+const draftWatchReady = ref(false);
+let suppressDraftPrune = false;
+
+function runWithDraftPruneSuppressed(callback) {
+  suppressDraftPrune = true;
+  try {
+    callback();
+  } finally {
+    suppressDraftPrune = false;
+  }
+}
 
 function resetHierarchyState() {
   Object.keys(hierarchyState).forEach((key) => {
@@ -61,7 +84,11 @@ function resetHierarchyState() {
   });
 }
 
-function setDefaultDates() {
+function toDateString(value) {
+  return value.toISOString().slice(0, 10);
+}
+
+function setDefaultDates(target) {
   const today = new Date();
   const endDate = new Date(today);
   endDate.setDate(endDate.getDate() - 1);
@@ -69,12 +96,27 @@ function setDefaultDates() {
   const startDate = new Date(endDate);
   startDate.setDate(startDate.getDate() - 6);
 
-  filters.startDate = toDateString(startDate);
-  filters.endDate = toDateString(endDate);
+  target.startDate = toDateString(startDate);
+  target.endDate = toDateString(endDate);
 }
 
-function toDateString(value) {
-  return value.toISOString().slice(0, 10);
+function assignFilterState(target, source) {
+  const snapshot = toResourceFilterSnapshot(source);
+  target.startDate = snapshot.startDate;
+  target.endDate = snapshot.endDate;
+  target.granularity = snapshot.granularity;
+  target.workcenterGroups = [...snapshot.workcenterGroups];
+  target.families = [...snapshot.families];
+  target.machines = [...snapshot.machines];
+  target.isProduction = snapshot.isProduction;
+  target.isKey = snapshot.isKey;
+  target.isMonitor = snapshot.isMonitor;
+}
+
+function resetToDefaultFilters(target) {
+  const defaults = createDefaultFilters();
+  setDefaultDates(defaults);
+  assignFilterState(target, defaults);
 }
 
 function unwrapApiResult(result, fallbackMessage) {
@@ -94,31 +136,31 @@ function mergeComputedKpi(source) {
   };
 }
 
-function buildQueryString() {
+function appendArrayParams(params, key, values) {
+  for (const value of values || []) {
+    params.append(key, value);
+  }
+}
+
+function buildQueryStringFromFilters(filters) {
+  const queryParams = buildResourceHistoryQueryParams(filters);
   const params = new URLSearchParams();
 
-  params.append('start_date', filters.startDate);
-  params.append('end_date', filters.endDate);
-  params.append('granularity', filters.granularity);
+  params.append('start_date', queryParams.start_date);
+  params.append('end_date', queryParams.end_date);
+  params.append('granularity', queryParams.granularity);
+  appendArrayParams(params, 'workcenter_groups', queryParams.workcenter_groups || []);
+  appendArrayParams(params, 'families', queryParams.families || []);
+  appendArrayParams(params, 'resource_ids', queryParams.resource_ids || []);
 
-  filters.workcenterGroups.forEach((group) => {
-    params.append('workcenter_groups', group);
-  });
-  filters.families.forEach((family) => {
-    params.append('families', family);
-  });
-  filters.machines.forEach((machine) => {
-    params.append('resource_ids', machine);
-  });
-
-  if (filters.isProduction) {
-    params.append('is_production', '1');
+  if (queryParams.is_production) {
+    params.append('is_production', queryParams.is_production);
   }
-  if (filters.isKey) {
-    params.append('is_key', '1');
+  if (queryParams.is_key) {
+    params.append('is_key', queryParams.is_key);
   }
-  if (filters.isMonitor) {
-    params.append('is_monitor', '1');
+  if (queryParams.is_monitor) {
+    params.append('is_monitor', queryParams.is_monitor);
   }
 
   return params.toString();
@@ -140,9 +182,9 @@ function readBooleanParam(params, key) {
   return value === '1' || value === 'true' || value === 'yes';
 }
 
-function readInitialFiltersFromUrl() {
+function restoreCommittedFiltersFromUrl() {
   const params = new URLSearchParams(window.location.search);
-  return {
+  const next = {
     startDate: String(params.get('start_date') || '').trim(),
     endDate: String(params.get('end_date') || '').trim(),
     granularity: String(params.get('granularity') || '').trim(),
@@ -153,15 +195,37 @@ function readInitialFiltersFromUrl() {
     isKey: readBooleanParam(params, 'is_key'),
     isMonitor: readBooleanParam(params, 'is_monitor'),
   };
+
+  if (next.startDate) {
+    committedFilters.startDate = next.startDate;
+  }
+  if (next.endDate) {
+    committedFilters.endDate = next.endDate;
+  }
+  if (next.granularity) {
+    committedFilters.granularity = next.granularity;
+  }
+  if (next.workcenterGroups.length > 0) {
+    committedFilters.workcenterGroups = next.workcenterGroups;
+  }
+  if (next.families.length > 0) {
+    committedFilters.families = next.families;
+  }
+  if (next.machines.length > 0) {
+    committedFilters.machines = next.machines;
+  }
+  committedFilters.isProduction = next.isProduction;
+  committedFilters.isKey = next.isKey;
+  committedFilters.isMonitor = next.isMonitor;
 }
 
 function updateUrlState() {
-  const queryString = buildQueryString();
+  const queryString = buildQueryStringFromFilters(committedFilters);
   const nextUrl = queryString ? `/resource-history?${queryString}` : '/resource-history';
   replaceRuntimeHistory(nextUrl);
 }
 
-function validateDateRange() {
+function validateDateRange(filters) {
   if (!filters.startDate || !filters.endDate) {
     return '請先設定開始與結束日期';
   }
@@ -200,34 +264,77 @@ async function loadOptions() {
   }
 }
 
-const machineOptions = computed(() => {
-  let list = options.resources;
-  if (filters.workcenterGroups.length > 0) {
-    const gset = new Set(filters.workcenterGroups);
-    list = list.filter((r) => gset.has(r.workcenterGroup));
-  }
-  if (filters.families.length > 0) {
-    const fset = new Set(filters.families);
-    list = list.filter((r) => fset.has(r.family));
-  }
-  if (filters.isProduction) list = list.filter((r) => r.isProduction);
-  if (filters.isKey) list = list.filter((r) => r.isKey);
-  if (filters.isMonitor) list = list.filter((r) => r.isMonitor);
-  return list
-    .map((r) => ({ label: r.name, value: r.id }))
-    .sort((a, b) => a.label.localeCompare(b.label));
+const familyOptions = computed(() => {
+  return deriveResourceFamilyOptions(options.resources, draftFilters);
 });
 
-function pruneInvalidMachines() {
-  const validIds = new Set(machineOptions.value.map((m) => m.value));
-  filters.machines = filters.machines.filter((m) => validIds.has(m));
+const machineOptions = computed(() => {
+  return deriveResourceMachineOptions(options.resources, draftFilters);
+});
+
+const filterBarOptions = computed(() => {
+  return {
+    workcenterGroups: options.workcenterGroups,
+    families: familyOptions.value,
+  };
+});
+
+function formatPruneHint(removed) {
+  const parts = [];
+  if (removed.families.length > 0) {
+    parts.push(`型號: ${removed.families.join(', ')}`);
+  }
+  if (removed.machines.length > 0) {
+    parts.push(`機台: ${removed.machines.join(', ')}`);
+  }
+  if (parts.length === 0) {
+    return '';
+  }
+  return `已自動清除失效篩選：${parts.join('；')}`;
 }
 
-async function executeQuery() {
-  updateUrlState();
-  const validationError = validateDateRange();
+function pruneDraftSelections({ showHint = true } = {}) {
+  const result = pruneResourceFilterSelections(draftFilters, {
+    familyOptions: familyOptions.value,
+    machineOptions: machineOptions.value,
+  });
+  if (result.removedCount > 0) {
+    runWithDraftPruneSuppressed(() => {
+      draftFilters.families = [...result.filters.families];
+      draftFilters.machines = [...result.filters.machines];
+    });
+    if (showHint) {
+      autoPruneHint.value = formatPruneHint(result.removed);
+    }
+  }
+  return result;
+}
+
+const pruneSignature = computed(() => {
+  return JSON.stringify({
+    workcenterGroups: draftFilters.workcenterGroups,
+    families: draftFilters.families,
+    machines: draftFilters.machines,
+    isProduction: draftFilters.isProduction,
+    isKey: draftFilters.isKey,
+    isMonitor: draftFilters.isMonitor,
+    familyOptions: familyOptions.value,
+    machineOptions: machineOptions.value.map((item) => item.value),
+  });
+});
+
+watch(pruneSignature, () => {
+  if (!draftWatchReady.value || suppressDraftPrune) {
+    return;
+  }
+  pruneDraftSelections({ showHint: true });
+});
+
+async function executeCommittedQuery() {
+  const validationError = validateDateRange(committedFilters);
   if (validationError) {
     queryError.value = validationError;
+    loading.initial = false;
     return;
   }
 
@@ -237,7 +344,9 @@ async function executeQuery() {
   exportMessage.value = '';
 
   try {
-    const queryString = buildQueryString();
+    const queryString = buildQueryStringFromFilters(committedFilters);
+    updateUrlState();
+
     const [summaryResponse, detailResponse] = await Promise.all([
       apiGet(`/api/resource/history/summary?${queryString}`, {
         timeout: API_TIMEOUT,
@@ -283,30 +392,31 @@ async function executeQuery() {
   }
 }
 
-function updateFilters(nextFilters) {
-  const upstreamChanged =
-    'workcenterGroups' in nextFilters ||
-    'families' in nextFilters ||
-    'isProduction' in nextFilters ||
-    'isKey' in nextFilters ||
-    'isMonitor' in nextFilters;
-
-  filters.startDate = nextFilters.startDate || '';
-  filters.endDate = nextFilters.endDate || '';
-  filters.granularity = nextFilters.granularity || 'day';
-  filters.workcenterGroups = Array.isArray(nextFilters.workcenterGroups)
-    ? nextFilters.workcenterGroups
-    : [];
-  filters.families = Array.isArray(nextFilters.families) ? nextFilters.families : [];
-  filters.machines = Array.isArray(nextFilters.machines) ? nextFilters.machines : [];
-  filters.isProduction = Boolean(nextFilters.isProduction);
-  filters.isKey = Boolean(nextFilters.isKey);
-  filters.isMonitor = Boolean(nextFilters.isMonitor);
-
-  if (upstreamChanged) {
-    pruneInvalidMachines();
+async function applyFilters() {
+  const validationError = validateDateRange(draftFilters);
+  if (validationError) {
+    queryError.value = validationError;
+    return;
   }
-  updateUrlState();
+  pruneDraftSelections({ showHint: true });
+  assignFilterState(committedFilters, draftFilters);
+  await executeCommittedQuery();
+}
+
+async function clearFilters() {
+  runWithDraftPruneSuppressed(() => {
+    resetToDefaultFilters(draftFilters);
+  });
+  autoPruneHint.value = '';
+  assignFilterState(committedFilters, draftFilters);
+  await executeCommittedQuery();
+}
+
+function updateFilters(nextFilters) {
+  runWithDraftPruneSuppressed(() => {
+    assignFilterState(draftFilters, nextFilters);
+  });
+  pruneDraftSelections({ showHint: true });
 }
 
 function handleToggleRow(rowId) {
@@ -320,15 +430,15 @@ function handleToggleAllRows({ expand, rowIds }) {
 }
 
 function exportCsv() {
-  if (!filters.startDate || !filters.endDate) {
+  if (!committedFilters.startDate || !committedFilters.endDate) {
     queryError.value = '請先設定查詢條件';
     return;
   }
 
-  const queryString = buildQueryString();
+  const queryString = buildQueryStringFromFilters(committedFilters);
   const link = document.createElement('a');
   link.href = `/api/resource/history/export?${queryString}`;
-  link.download = `resource_history_${filters.startDate}_to_${filters.endDate}.csv`;
+  link.download = `resource_history_${committedFilters.startDate}_to_${committedFilters.endDate}.csv`;
   document.body.appendChild(link);
   link.click();
   document.body.removeChild(link);
@@ -337,38 +447,22 @@ function exportCsv() {
 }
 
 async function initPage() {
-  setDefaultDates();
-  const initial = readInitialFiltersFromUrl();
-  if (initial.startDate) {
-    filters.startDate = initial.startDate;
-  }
-  if (initial.endDate) {
-    filters.endDate = initial.endDate;
-  }
-  if (initial.granularity) {
-    filters.granularity = initial.granularity;
-  }
-  if (initial.workcenterGroups.length > 0) {
-    filters.workcenterGroups = initial.workcenterGroups;
-  }
-  if (initial.families.length > 0) {
-    filters.families = initial.families;
-  }
-  if (initial.machines.length > 0) {
-    filters.machines = initial.machines;
-  }
-  filters.isProduction = initial.isProduction;
-  filters.isKey = initial.isKey;
-  filters.isMonitor = initial.isMonitor;
+  resetToDefaultFilters(committedFilters);
+  restoreCommittedFiltersFromUrl();
+  runWithDraftPruneSuppressed(() => {
+    assignFilterState(draftFilters, committedFilters);
+  });
 
   try {
     await loadOptions();
-    pruneInvalidMachines();
+    pruneDraftSelections({ showHint: true });
+    assignFilterState(committedFilters, draftFilters);
   } catch (error) {
     queryError.value = error?.message || '載入篩選選項失敗';
   }
-  updateUrlState();
-  await executeQuery();
+
+  draftWatchReady.value = true;
+  await executeCommittedQuery();
 }
 
 onMounted(() => {
@@ -384,15 +478,17 @@ onMounted(() => {
       </header>
 
       <FilterBar
-        :filters="filters"
-        :options="options"
+        :filters="draftFilters"
+        :options="filterBarOptions"
         :machine-options="machineOptions"
         :loading="loading.options || loading.querying"
         @update-filters="updateFilters"
-        @query="executeQuery"
+        @query="applyFilters"
+        @clear="clearFilters"
       />
 
       <p v-if="queryError" class="error-banner query-error">{{ queryError }}</p>
+      <p v-if="autoPruneHint" class="filter-indicator">{{ autoPruneHint }}</p>
       <p v-if="detailWarning" class="filter-indicator active">{{ detailWarning }}</p>
       <p v-if="exportMessage" class="filter-indicator active">{{ exportMessage }}</p>
 
@@ -418,9 +514,5 @@ onMounted(() => {
         @export-csv="exportCsv"
       />
     </div>
-
-    <div class="loading-overlay" :class="{ hidden: !loading.initial && !loading.querying }">
-      <div class="loading-spinner"></div>
-    </div>
   </div>
 </template>
diff --git a/frontend/src/resource-history/components/FilterBar.vue b/frontend/src/resource-history/components/FilterBar.vue
index 8bb2b44..261d3fa 100644
--- a/frontend/src/resource-history/components/FilterBar.vue
+++ b/frontend/src/resource-history/components/FilterBar.vue
@@ -30,7 +30,7 @@ const props = defineProps({
   },
 });
 
-const emit = defineEmits(['update-filters', 'query']);
+const emit = defineEmits(['update-filters', 'query', 'clear']);
 
 function updateFilters(patch) {
   emit('update-filters', {
@@ -148,6 +148,7 @@ function updateFilters(patch) {
         </div>
 
         <button type="button" class="btn btn-primary" :disabled="loading" @click="$emit('query')">查詢</button>
+        <button type="button" class="btn btn-secondary" :disabled="loading" @click="$emit('clear')">清除條件</button>
       </div>
     </div>
   </section>
diff --git a/frontend/tests/report-filter-strategy.test.js b/frontend/tests/report-filter-strategy.test.js
new file mode 100644
index 0000000..519af24
--- /dev/null
+++ b/frontend/tests/report-filter-strategy.test.js
@@ -0,0 +1,145 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import {
+  buildRejectOptionsRequestParams,
+  pruneRejectFilterSelections,
+} from '../src/core/reject-history-filters.js';
+import {
+  buildResourceHistoryQueryParams,
+  deriveResourceFamilyOptions,
+  deriveResourceMachineOptions,
+  pruneResourceFilterSelections,
+} from '../src/core/resource-history-filters.js';
+
+test('reject-history draft options params include full context', () => {
+  const params = buildRejectOptionsRequestParams({
+    startDate: '2026-02-01',
+    endDate: '2026-02-07',
+    workcenterGroups: ['WB'],
+    packages: ['PKG-A'],
+    reason: '001_A',
+    includeExcludedScrap: true,
+    excludeMaterialScrap: false,
+    excludePbDiode: true,
+  });
+
+  assert.deepEqual(params, {
+    start_date: '2026-02-01',
+    end_date: '2026-02-07',
+    workcenter_groups: ['WB'],
+    packages: ['PKG-A'],
+    reason: '001_A',
+    include_excluded_scrap: true,
+    exclude_material_scrap: false,
+    exclude_pb_diode: true,
+  });
+});
+
+test('reject-history prune removes invalid selected values', () => {
+  const pruned = pruneRejectFilterSelections(
+    {
+      startDate: '2026-02-01',
+      endDate: '2026-02-07',
+      workcenterGroups: ['WB', 'FA'],
+      packages: ['PKG-A', 'PKG-Z'],
+      reason: '999_X',
+      includeExcludedScrap: false,
+      excludeMaterialScrap: true,
+      excludePbDiode: true,
+      paretoTop80: true,
+    },
+    {
+      workcenterGroups: [{ name: 'WB', sequence: 1 }],
+      packages: ['PKG-A'],
+      reasons: ['001_A', '002_B'],
+    }
+  );
+
+  assert.deepEqual(pruned.filters.workcenterGroups, ['WB']);
+  assert.deepEqual(pruned.filters.packages, ['PKG-A']);
+  assert.equal(pruned.filters.reason, '');
+  assert.equal(pruned.removedCount, 3);
+});
+
+test('resource-history derives families from upstream group and flags', () => {
+  const resources = [
+    { id: 'R1', name: 'MC-01', family: 'FAM-A', workcenterGroup: 'WB', isProduction: true, isKey: true, isMonitor: false },
+    { id: 'R2', name: 'MC-02', family: 'FAM-B', workcenterGroup: 'WB', isProduction: true, isKey: false, isMonitor: true },
+    { id: 'R3', name: 'MC-03', family: 'FAM-C', workcenterGroup: 'FA', isProduction: true, isKey: true, isMonitor: false },
+  ];
+
+  const families = deriveResourceFamilyOptions(resources, {
+    workcenterGroups: ['WB'],
+    isProduction: true,
+    isKey: true,
+    isMonitor: false,
+  });
+
+  assert.deepEqual(families, ['FAM-A']);
+});
+
+test('resource-history machine derivation and prune keep valid selections only', () => {
+  const resources = [
+    { id: 'R1', name: 'MC-01', family: 'FAM-A', workcenterGroup: 'WB', isProduction: true, isKey: false, isMonitor: false },
+    { id: 'R2', name: 'MC-02', family: 'FAM-B', workcenterGroup: 'WB', isProduction: true, isKey: false, isMonitor: false },
+    { id: 'R3', name: 'MC-03', family: 'FAM-C', workcenterGroup: 'FA', isProduction: true, isKey: true, isMonitor: false },
+  ];
+
+  const machineOptions = deriveResourceMachineOptions(resources, {
+    workcenterGroups: ['WB'],
+    families: ['FAM-B'],
+    isProduction: true,
+    isKey: false,
+    isMonitor: false,
+  });
+
+  assert.deepEqual(machineOptions, [{ label: 'MC-02', value: 'R2' }]);
+
+  const pruned = pruneResourceFilterSelections(
+    {
+      startDate: '2026-02-01',
+      endDate: '2026-02-07',
+      granularity: 'day',
+      workcenterGroups: ['WB'],
+      families: ['FAM-A', 'FAM-Z'],
+      machines: ['R1', 'R9'],
+      isProduction: true,
+      isKey: false,
+      isMonitor: false,
+    },
+    {
+      familyOptions: ['FAM-A', 'FAM-B'],
+      machineOptions: [{ label: 'MC-01', value: 'R1' }],
+    }
+  );
+
+  assert.deepEqual(pruned.filters.families, ['FAM-A']);
+  assert.deepEqual(pruned.filters.machines, ['R1']);
+  assert.equal(pruned.removedCount, 2);
+});
+
+test('resource-history query params include selected arrays and enabled flags', () => {
+  const params = buildResourceHistoryQueryParams({
+    startDate: '2026-02-01',
+    endDate: '2026-02-07',
+    granularity: 'week',
+    workcenterGroups: ['WB'],
+    families: ['FAM-A'],
+    machines: ['R1', 'R2'],
+    isProduction: true,
+    isKey: false,
+    isMonitor: true,
+  });
+
+  assert.deepEqual(params, {
+    start_date: '2026-02-01',
+    end_date: '2026-02-07',
+    granularity: 'week',
+    workcenter_groups: ['WB'],
+    families: ['FAM-A'],
+    resource_ids: ['R1', 'R2'],
+    is_production: '1',
+    is_monitor: '1',
+  });
+});
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/.openspec.yaml b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/.openspec.yaml
new file mode 100644
index 0000000..cbbb578
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/.openspec.yaml
@@ -0,0 +1,2 @@
+schema: spec-driven
+created: 2026-02-22
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/design.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/design.md
new file mode 100644
index 0000000..5d41dcd
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/design.md
@@ -0,0 +1,106 @@
+## Context
+
+目前 released 報表頁面的篩選模型混用三種模式：
+1. 後端動態 options 互篩（`wip-overview` / `wip-detail`）
+2. 前端用已載入 options 做部分收斂（`resource-history`）
+3. 查詢驅動或鑽取驅動（`reject-history`、`hold-*` 等）
+
+這種混用在「探索型」報表（使用者要快速找到可分析的有效組合）會造成明顯成本：
+- 下拉選單可選但查詢無資料
+- 上游條件變更後，下游已選值失效但仍保留
+- 使用者對不同頁面的篩選預期不一致
+
+本提案聚焦補強兩個探索型頁面：
+- `reject-history`
+- `resource-history`
+
+並建立跨報表可重用的篩選策略基線。
+
+## Goals / Non-Goals
+
+**Goals:**
+- 定義「探索型 vs 監控/鑽取型」頁面的篩選策略分級與適用準則。
+- 讓 `reject-history` 支援草稿條件驅動的 options 互相收斂，減少無效篩選組合。
+- 讓 `resource-history` 從部分聯動提升為一致聯動（上游變更時，自動 prune 失效選取值）。
+- 統一互篩技術細節：debounce、請求去重/過期回應保護、無效值剔除、apply/clear 語意一致。
+
+**Non-Goals:**
+- 不在本次將所有 released 頁面全面改為互相篩選。
+- 不改變報表核心計算邏輯（KPI、統計口徑、圖表定義）。
+- 不引入新基礎設施（例如 Redis 新部署）作為互篩前置條件。
+
+## Decisions
+
+### Decision 1: 採用「頁面類型分級」而非全站一刀切
+- 決策：
+  - 探索型頁面：要求完整互篩（options 受目前草稿條件影響，且自動 prune 失效值）。
+  - 監控/鑽取型頁面：允許維持輕量篩選 + drilldown，不強制完整互篩。
+- 理由：
+  - 探索型頁面的主要任務是「找可分析組合」，互篩是核心可用性功能。
+  - 監控/鑽取型頁面追求即時性與低操作成本，完整互篩的收益較低。
+- 替代方案：
+  - 全頁面統一完整互篩：一致性高，但開發與維護成本過高，且對監控頁面價值有限。
+
+### Decision 2: `reject-history` 採 server-side options 互篩
+- 決策：
+  - 以 options API 接收草稿條件（時間、workcenter group、package、reason、政策旗標）回傳收斂後候選值。
+  - 前端在草稿變更時 debounce 觸發 options reload；apply 時再執行主查詢。
+- 理由：
+  - `reject-history` 篩選受政策旗標影響，僅靠前端靜態 options 無法正確反映後端過濾語意。
+- 替代方案：
+  - 前端本地收斂：無法覆蓋政策條件與後端口徑，容易與實際查詢結果不一致。
+
+### Decision 3: `resource-history` 維持前端收斂為主，但補齊一致 prune
+- 決策：
+  - 仍使用已載入 options/resources 作前端收斂，避免每次草稿變更打後端。
+  - 補上 family/machine 與上游條件（群組、flags）一致收斂與失效值自動清理。
+- 理由：
+  - `resource-history` 現有資料結構已適合前端計算選項，性能與實作成本較平衡。
+- 替代方案：
+  - 改成全 server-side options：一致性高，但請求頻率與後端負載上升，且未必有必要。
+
+### Decision 4: 建立可重用互篩行為基線
+- 決策：
+  - 統一以下行為：
+    - debounce options reload
+    - request token / stale response guard
+    - upstream 變更觸發 downstream prune
+    - clear 時重置至預設並同步 URL
+- 理由：
+  - 降低跨頁面行為偏差，後續新頁面可直接套用。
+- 替代方案：
+  - 每頁自行實作：短期快，但長期易分歧與回歸。
+
+## Risks / Trade-offs
+
+- [Risk] `reject-history` options API 參數變多，查詢複雜度上升  
+  → Mitigation: 使用現有快取索引與必要欄位投影，限制 options 查詢計算範圍。
+
+- [Risk] 草稿變更觸發 options reload，造成頻繁請求  
+  → Mitigation: debounce + 過期回應丟棄 + 僅在可影響 options 的欄位變更時重載。
+
+- [Risk] prune 行為可能讓使用者感覺「選項被系統吃掉」  
+  → Mitigation: UI 顯示明確提示（例如選項已失效並自動清除），且 apply/clear 行為一致。
+
+- [Risk] 互篩策略擴大後，頁面之間仍可能有例外需求  
+  → Mitigation: 先以「頁面分級」定義允許差異的範圍，避免假一致性。
+
+## Migration Plan
+
+1. 先提交 spec-level 規範（策略基線 + 兩頁行為變更）。
+2. `reject-history`：擴充 options API 參數與服務層收斂邏輯，前端接入草稿互篩。
+3. `resource-history`：補齊前端收斂與 prune 規則，對齊 apply/query 流程。
+4. 補 route/service/frontend 測試，確認：
+   - options 會隨草稿條件收斂
+   - upstream 變更會清理失效下游值
+   - apply/clear 行為不回歸
+5. 以 feature flag（若需要）做灰度，確認查詢效能後再全面開啟。
+
+Rollback:
+- 後端保留原 options 路徑/參數相容；前端可切回「僅 apply 查詢，不做草稿互篩」模式。
+
+## Open Questions
+
+- `reject-history` 的 reason 下拉是否要改為 multi-select（目前設計維持單選）？
+- `resource-history` 是否需要將 family options 也改為完全 server-side 來源以統一模式？
+- prune 提示文案是否需要全站共用元件（避免各頁文案不一致）？
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/implementation-notes.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/implementation-notes.md
new file mode 100644
index 0000000..fb98784
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/implementation-notes.md
@@ -0,0 +1,65 @@
+# Implementation Notes
+
+## 1) Page classification (exploratory baseline)
+
+- `reject-history`: exploratory
+  - Requires draft-driven options narrowing for `WORKCENTER_GROUP` / `Package` / `原因`
+  - Requires stale-response protection + invalid-value auto-prune before apply/export
+- `resource-history`: exploratory
+  - Requires upstream-to-downstream narrowing (`群組/旗標 -> 型號 -> 機台`)
+  - Requires family/machine auto-prune and committed query execution model
+
+## 2) Frontend responsibilities mapping
+
+- `frontend/src/reject-history/App.vue`
+  - Holds **draft filters** (`draftFilters`) for options narrowing
+  - Holds **committed filters** (`committedFilters`) for summary/trend/pareto/list/export
+  - Performs debounced options reload and stale response discard
+  - Prunes invalid draft values and applies non-blocking prune hint
+- `frontend/src/resource-history/App.vue`
+  - Holds draft/committed filter split and URL sync on committed only
+  - Derives family/machine options from loaded resource metadata before first query
+  - Prunes invalid family/machine values on upstream changes
+  - Uses apply/clear semantics with deterministic reset
+- Shared helper modules for deterministic unit-test coverage:
+  - `frontend/src/core/reject-history-filters.js`
+  - `frontend/src/core/resource-history-filters.js`
+
+## 3) Debounce & request-guard conventions
+
+- `reject-history` draft options debounce: `300ms`
+  - Constant: `OPTIONS_DEBOUNCE_MS = 300`
+  - stale-response guard: monotonic request token (`activeOptionsRequestId`)
+- `reject-history` data queries and list updates
+  - stale-response guard: monotonic request token (`activeDataRequestId`)
+- `resource-history`
+  - Uses local computed narrowing/prune (no per-change options API call), so no options debounce required
+  - Query execution remains explicit on apply/clear
+
+## 4) Manual verification checklist (2026-02-22)
+
+- [x] Reject-history: changing draft `WORKCENTER_GROUP` narrows `Package/原因` options
+- [x] Reject-history: changing policy toggles narrows options and keeps list/analytics policy alignment
+- [x] Reject-history: invalid selected values auto-prune and show non-blocking hint
+- [x] Reject-history: apply/export only use committed valid filters
+- [x] Resource-history: first load provides usable family/machine candidates before first query
+- [x] Resource-history: upstream (`群組/設備旗標`) changes prune invalid `型號/機台`
+- [x] Resource-history: query + URL sync use committed filters only
+- [x] Resource-history: clear resets deterministic defaults and reloads data
+
+## 5) Monitoring/drilldown non-goal guard
+
+- No filter strategy rollout changes were applied to monitoring/drilldown page code paths in this change.
+- Scope verification: file modifications are limited to reject-history/resource-history flows, related SQL/routes/services, tests, and change artifacts.
+
+## 6) Release note entry (draft)
+
+- Title: `Exploratory filter strategy hardening for Reject History and Resource History`
+- Scope:
+  - Added interdependent draft option narrowing and invalid-selection pruning on `reject-history`
+  - Strengthened upstream-driven family/machine narrowing and prune behavior on `resource-history`
+  - Unified apply/clear semantics and non-blocking prune feedback on both exploratory pages
+- Non-goals:
+  - No global rollout to all released reports
+  - No KPI/business formula changes
+  - No monitoring/drilldown filtering model migration in this release
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/proposal.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/proposal.md
new file mode 100644
index 0000000..144be27
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/proposal.md
@@ -0,0 +1,41 @@
+## Why
+
+目前已 release 的報表頁面中，篩選行為有明顯差異：有些頁面具備互相影響的動態選項，有些僅做查詢後過濾或單向收斂。這會造成使用者在跨報表分析時的操作落差與誤解，並增加「無結果查詢」與重複嘗試成本，因此需要補強並統一篩選策略。
+
+## What Changes
+
+- 建立跨報表的篩選策略分級與適用準則，明確區分：
+  - 探索型報表：需支援多欄位互相影響篩選
+  - 監控/鑽取型報表：保留輕量篩選與 drilldown 為主
+- 針對探索型頁面補強互相篩選：
+  - `reject-history`：選項 API 支援依目前草稿條件回傳受限選項，降低無效組合
+  - `resource-history`：將現有 machine 單向收斂擴展為上游條件一致收斂並自動剔除失效選取值
+- 統一前端互篩行為細節：debounce、請求去重/過期保護、無效選取值 prune、apply/clear 一致語意
+- 補上互篩策略的驗證與回歸測試（前端互動與後端 option API 行為）
+
+## Capabilities
+
+### New Capabilities
+- `report-filter-strategy`: 定義報表篩選策略分級、互篩行為基線與一致性驗證規範
+
+### Modified Capabilities
+- `reject-history-page`: 篩選選項改為可依草稿條件動態收斂，並維持既有政策旗標語意
+- `resource-history-page`: 篩選聯動由部分收斂提升為完整上游影響與失效值自動清理
+
+## Impact
+
+- **Frontend**
+  - `frontend/src/reject-history/App.vue`
+  - `frontend/src/reject-history/components/FilterPanel.vue`
+  - `frontend/src/resource-history/App.vue`
+  - `frontend/src/resource-history/components/FilterBar.vue`
+  - 視需要新增 shared composable（互篩 option reload / prune）
+- **Backend**
+  - `src/mes_dashboard/routes/reject_history_routes.py`
+  - `src/mes_dashboard/services/reject_history_service.py`
+  - 視需要新增/擴充 `resource-history` option API 參數解析與服務層
+- **Tests**
+  - `tests/` 中 reject-history / resource-history 相關 route & service 測試
+  - `frontend/tests/` 補互篩行為測試
+- **Non-goals**
+  - 本次不要求所有 released 頁面全面改為完整互篩；僅先補強探索型頁面，監控/鑽取型頁面維持現有互動模型
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/reject-history-page/spec.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/reject-history-page/spec.md
new file mode 100644
index 0000000..52bebf7
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/reject-history-page/spec.md
@@ -0,0 +1,36 @@
+## MODIFIED Requirements
+
+### Requirement: Reject History page SHALL provide filterable historical query controls
+The page SHALL provide a filter area for date range and major production dimensions to drive all report sections, and SHALL provide context-aware option narrowing for exploratory filtering.
+
+#### Scenario: Default filter values
+- **WHEN** the page is first loaded
+- **THEN** `start_date` and `end_date` SHALL default to a valid recent range
+- **THEN** all other dimension filters SHALL default to empty (no restriction)
+
+#### Scenario: Apply and clear filters
+- **WHEN** user clicks "查詢"
+- **THEN** summary, trend, pareto, and list sections SHALL reload with the same filter set
+- **WHEN** user clicks "清除條件"
+- **THEN** all filters SHALL reset to defaults and all sections SHALL reload
+
+#### Scenario: Required core filters are present
+- **WHEN** the filter panel is rendered
+- **THEN** it SHALL include `start_date/end_date` time filter controls
+- **THEN** it SHALL include reason filter control
+- **THEN** it SHALL include `WORKCENTER_GROUP` filter control
+
+#### Scenario: Draft filter options are interdependent
+- **WHEN** user changes draft values for `WORKCENTER_GROUP`, `package`, `reason`, or policy toggles
+- **THEN** option candidates for reason/workcenter-group/package SHALL reload under the current draft context
+- **THEN** unavailable combinations SHALL NOT remain in selectable options
+
+#### Scenario: Policy toggles affect option scope
+- **WHEN** user changes policy toggles (including excluded-scrap and material-scrap switches)
+- **THEN** options and query results SHALL use the same policy mode
+- **THEN** option narrowing SHALL remain consistent with backend exclusion semantics
+
+#### Scenario: Invalid selected values are pruned
+- **WHEN** narrowed options no longer contain previously selected values
+- **THEN** invalid selections SHALL be removed automatically before query commit
+- **THEN** apply/query SHALL only send valid selected values
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/report-filter-strategy/spec.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/report-filter-strategy/spec.md
new file mode 100644
index 0000000..b736e38
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/report-filter-strategy/spec.md
@@ -0,0 +1,54 @@
+## ADDED Requirements
+
+### Requirement: Report pages SHALL declare a filter strategy class
+Each released report page that exposes filter controls SHALL declare whether it is `exploratory` or `monitoring-drilldown` for filter behavior governance.
+
+#### Scenario: Exploratory page classification
+- **WHEN** a page is classified as `exploratory`
+- **THEN** it SHALL implement interdependent filter options
+- **THEN** it SHALL prevent invalid cross-dimension combinations from remaining selectable
+
+#### Scenario: Monitoring/drilldown page classification
+- **WHEN** a page is classified as `monitoring-drilldown`
+- **THEN** it MAY keep lightweight filters or chart-driven drilldown
+- **THEN** it SHALL document why full interdependent options are not required
+
+### Requirement: Exploratory pages SHALL support draft-driven option narrowing
+Exploratory pages SHALL update filter option lists according to current draft selections before main query execution.
+
+#### Scenario: Draft change triggers option reload
+- **WHEN** user changes any draft filter field that can affect other options
+- **THEN** the page SHALL debounce option reload requests
+- **THEN** options returned by the latest request SHALL replace prior candidates
+
+#### Scenario: Stale option response protection
+- **WHEN** multiple option reload requests are in-flight
+- **THEN** only the newest request result SHALL be applied
+- **THEN** stale responses SHALL be discarded without mutating UI state
+
+### Requirement: Exploratory pages SHALL prune invalid selected values
+Exploratory pages SHALL automatically remove selected values that are no longer valid under the latest upstream draft conditions.
+
+#### Scenario: Upstream change invalidates downstream values
+- **WHEN** upstream filters change and previously selected downstream values are absent from narrowed options
+- **THEN** those invalid selected values SHALL be removed automatically
+- **THEN** the page SHALL keep remaining valid selections unchanged
+
+#### Scenario: Apply query uses pruned committed filters
+- **WHEN** user clicks apply/query after pruning occurred
+- **THEN** the request SHALL use the current valid filter set only
+- **THEN** no removed invalid values SHALL be sent to API parameters
+
+### Requirement: Exploratory pages SHALL keep apply and clear semantics consistent
+Exploratory pages SHALL separate draft option narrowing from committed query execution and provide deterministic clear behavior.
+
+#### Scenario: Apply commits current filter state
+- **WHEN** user clicks apply/query
+- **THEN** all data sections SHALL reload using the same committed filter set
+- **THEN** URL state SHALL synchronize with committed filters only
+
+#### Scenario: Clear resets to defaults
+- **WHEN** user clicks clear
+- **THEN** filters SHALL reset to documented defaults
+- **THEN** option candidates SHALL reload for the default state
+- **THEN** data sections SHALL reload from the default state
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/resource-history-page/spec.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/resource-history-page/spec.md
new file mode 100644
index 0000000..897f688
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/specs/resource-history-page/spec.md
@@ -0,0 +1,30 @@
+## MODIFIED Requirements
+
+### Requirement: Resource History page SHALL support multi-select filtering
+The page SHALL provide multi-select dropdown filters for workcenter groups and families, and SHALL support interdependent narrowing with machine options and selected-value pruning.
+
+#### Scenario: Multi-select dropdown
+- **WHEN** user clicks a multi-select dropdown trigger
+- **THEN** a dropdown SHALL display with checkboxes for each option
+- **THEN** "Select All" and "Clear All" buttons SHALL be available
+- **THEN** clicking outside the dropdown SHALL close it
+
+#### Scenario: Filter options loading
+- **WHEN** the page loads
+- **THEN** workcenter groups and families SHALL load from `GET /api/resource/history/options`
+- **THEN** machine candidates SHALL be derivable before first query from loaded option resources
+
+#### Scenario: Upstream filters narrow downstream options
+- **WHEN** user changes upstream filters (`workcenterGroups`, `families`, equipment-type flags)
+- **THEN** machine options SHALL be recomputed to only include matching resources
+- **THEN** narrowed options SHALL be reflected immediately in filter controls
+
+#### Scenario: Invalid selected machines are pruned
+- **WHEN** upstream filters change and selected machines are no longer valid
+- **THEN** invalid selected machine values SHALL be removed automatically
+- **THEN** remaining valid selected machine values SHALL be preserved
+
+#### Scenario: Equipment type checkboxes
+- **WHEN** user toggles a checkbox (生產設備, 重點設備, 監控設備)
+- **THEN** the next query SHALL include the corresponding filter parameter
+- **THEN** option narrowing SHALL also honor the same checkbox conditions
diff --git a/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/tasks.md b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/tasks.md
new file mode 100644
index 0000000..af9b7a7
--- /dev/null
+++ b/openspec/changes/archive/2026-02-22-report-filter-strategy-hardening/tasks.md
@@ -0,0 +1,38 @@
+## 1. Spec and strategy baseline alignment
+
+- [x] 1.1 Confirm page classification for this change (`reject-history`=exploratory, `resource-history`=exploratory) and record in implementation notes
+- [x] 1.2 Verify filter behavior baseline (debounce, stale-response guard, prune, apply/clear semantics) is mapped to concrete frontend responsibilities
+
+## 2. Reject History interdependent options hardening
+
+- [x] 2.1 Extend reject-history options route to accept full draft filter context (date range, workcenter_groups, packages, reason, policy toggles)
+- [x] 2.2 Update reject-history service option query logic to return narrowed reason/workcenter/package candidates under the same policy semantics as list/analytics
+- [x] 2.3 Update reject-history frontend filter flow to reload options on draft-relevant changes with debounce and stale-response protection
+- [x] 2.4 Add invalid-selection pruning for reject-history filters after options reload (remove values no longer in candidate set)
+- [x] 2.5 Ensure apply/query and export requests only use committed valid filters
+
+## 3. Resource History interdependent filtering hardening
+
+- [x] 3.1 Refine resource-history option-derivation logic so upstream changes consistently narrow downstream machine options
+- [x] 3.2 Add/verify family and machine selection pruning when upstream filters or equipment-type flags invalidate selected values
+- [x] 3.3 Ensure resource-history query execution always uses the pruned committed filter set and preserves URL synchronization behavior
+- [x] 3.4 Verify first-load filter usability (options and machine candidates usable before first query)
+
+## 4. Shared UX consistency and guardrails
+
+- [x] 4.1 Normalize apply/clear semantics and naming within affected pages without altering existing report-specific business logic
+- [x] 4.2 Add consistent user feedback for auto-pruned selections (non-blocking hint/banner or equivalent)
+- [x] 4.3 Confirm debounce interval and request-token guard values are documented and consistent with project conventions
+
+## 5. Tests and validation
+
+- [x] 5.1 Add/adjust backend tests for reject-history options narrowing and policy-toggle consistency
+- [x] 5.2 Add/adjust frontend tests for interdependent option reload and prune behavior on reject-history/resource-history
+- [x] 5.3 Run targeted test set (backend route/service + frontend unit) and resolve regressions
+- [x] 5.4 Run frontend build validation and verify no behavior regressions on released pages outside this scope
+
+## 6. Rollout and regression checks
+
+- [x] 6.1 Perform manual verification checklist for exploratory use cases (cross-dimension narrowing, clear/apply, URL restore)
+- [x] 6.2 Verify monitoring/drilldown pages remain unchanged in behavior (no accidental full interdependent filtering rollout)
+- [x] 6.3 Prepare release note entry describing filter strategy hardening scope and non-goals
diff --git a/openspec/specs/reject-history-page/spec.md b/openspec/specs/reject-history-page/spec.md
index 00543d3..87b2c48 100644
--- a/openspec/specs/reject-history-page/spec.md
+++ b/openspec/specs/reject-history-page/spec.md
@@ -4,7 +4,7 @@
 TBD - created by archiving change reject-history-query-page. Update Purpose after archive.
 ## Requirements
 ### Requirement: Reject History page SHALL provide filterable historical query controls
-The page SHALL provide a filter area for date range and major production dimensions to drive all report sections.
+The page SHALL provide a filter area for date range and major production dimensions to drive all report sections, and SHALL provide context-aware option narrowing for exploratory filtering.
 
 #### Scenario: Default filter values
 - **WHEN** the page is first loaded
@@ -23,6 +23,21 @@ The page SHALL provide a filter area for date range and major production dimensi
 - **THEN** it SHALL include reason filter control
 - **THEN** it SHALL include `WORKCENTER_GROUP` filter control
 
+#### Scenario: Draft filter options are interdependent
+- **WHEN** user changes draft values for `WORKCENTER_GROUP`, `package`, `reason`, or policy toggles
+- **THEN** option candidates for reason/workcenter-group/package SHALL reload under the current draft context
+- **THEN** unavailable combinations SHALL NOT remain in selectable options
+
+#### Scenario: Policy toggles affect option scope
+- **WHEN** user changes policy toggles (including excluded-scrap and material-scrap switches)
+- **THEN** options and query results SHALL use the same policy mode
+- **THEN** option narrowing SHALL remain consistent with backend exclusion semantics
+
+#### Scenario: Invalid selected values are pruned
+- **WHEN** narrowed options no longer contain previously selected values
+- **THEN** invalid selections SHALL be removed automatically before query commit
+- **THEN** apply/query SHALL only send valid selected values
+
 ### Requirement: Reject History page SHALL expose yield-exclusion toggle control
 The page SHALL let users decide whether to include policy-marked scrap in yield calculations.
 
@@ -139,4 +154,3 @@ The page SHALL keep the same semantic grouping across desktop and mobile layouts
 - **WHEN** viewport width is below responsive breakpoint
 - **THEN** cards and chart panels SHALL stack in a single column
 - **THEN** filter controls SHALL remain operable without horizontal overflow
-
diff --git a/openspec/specs/report-filter-strategy/spec.md b/openspec/specs/report-filter-strategy/spec.md
new file mode 100644
index 0000000..20ed28a
--- /dev/null
+++ b/openspec/specs/report-filter-strategy/spec.md
@@ -0,0 +1,58 @@
+# report-filter-strategy Specification
+
+## Purpose
+Define cross-report filter strategy governance, including exploratory-page interdependent filtering baselines.
+
+## Requirements
+### Requirement: Report pages SHALL declare a filter strategy class
+Each released report page that exposes filter controls SHALL declare whether it is `exploratory` or `monitoring-drilldown` for filter behavior governance.
+
+#### Scenario: Exploratory page classification
+- **WHEN** a page is classified as `exploratory`
+- **THEN** it SHALL implement interdependent filter options
+- **THEN** it SHALL prevent invalid cross-dimension combinations from remaining selectable
+
+#### Scenario: Monitoring/drilldown page classification
+- **WHEN** a page is classified as `monitoring-drilldown`
+- **THEN** it MAY keep lightweight filters or chart-driven drilldown
+- **THEN** it SHALL document why full interdependent options are not required
+
+### Requirement: Exploratory pages SHALL support draft-driven option narrowing
+Exploratory pages SHALL update filter option lists according to current draft selections before main query execution.
+
+#### Scenario: Draft change triggers option reload
+- **WHEN** user changes any draft filter field that can affect other options
+- **THEN** the page SHALL debounce option reload requests
+- **THEN** options returned by the latest request SHALL replace prior candidates
+
+#### Scenario: Stale option response protection
+- **WHEN** multiple option reload requests are in-flight
+- **THEN** only the newest request result SHALL be applied
+- **THEN** stale responses SHALL be discarded without mutating UI state
+
+### Requirement: Exploratory pages SHALL prune invalid selected values
+Exploratory pages SHALL automatically remove selected values that are no longer valid under the latest upstream draft conditions.
+
+#### Scenario: Upstream change invalidates downstream values
+- **WHEN** upstream filters change and previously selected downstream values are absent from narrowed options
+- **THEN** those invalid selected values SHALL be removed automatically
+- **THEN** the page SHALL keep remaining valid selections unchanged
+
+#### Scenario: Apply query uses pruned committed filters
+- **WHEN** user clicks apply/query after pruning occurred
+- **THEN** the request SHALL use the current valid filter set only
+- **THEN** no removed invalid values SHALL be sent to API parameters
+
+### Requirement: Exploratory pages SHALL keep apply and clear semantics consistent
+Exploratory pages SHALL separate draft option narrowing from committed query execution and provide deterministic clear behavior.
+
+#### Scenario: Apply commits current filter state
+- **WHEN** user clicks apply/query
+- **THEN** all data sections SHALL reload using the same committed filter set
+- **THEN** URL state SHALL synchronize with committed filters only
+
+#### Scenario: Clear resets to defaults
+- **WHEN** user clicks clear
+- **THEN** filters SHALL reset to documented defaults
+- **THEN** option candidates SHALL reload for the default state
+- **THEN** data sections SHALL reload from the default state
diff --git a/openspec/specs/resource-history-page/spec.md b/openspec/specs/resource-history-page/spec.md
index ab1c4b9..69ed043 100644
--- a/openspec/specs/resource-history-page/spec.md
+++ b/openspec/specs/resource-history-page/spec.md
@@ -84,8 +84,8 @@ The page SHALL allow users to specify time range and aggregation granularity.
 - **THEN** summary and detail APIs SHALL be called in parallel
 - **THEN** all 4 charts, KPI cards, and detail table SHALL update with results
 
-### Requirement: Resource History page SHALL support multi-select filtering
-The page SHALL provide multi-select dropdown filters for workcenter groups and families.
+### Requirement: Resource History page SHALL support multi-select filtering
+The page SHALL provide multi-select dropdown filters for workcenter groups and families, and SHALL support interdependent narrowing with machine options and selected-value pruning.
 
 #### Scenario: Multi-select dropdown
 - **WHEN** user clicks a multi-select dropdown trigger
@@ -93,13 +93,25 @@ The page SHALL provide multi-select dropdown filters for workcenter groups and f
 - **THEN** "Select All" and "Clear All" buttons SHALL be available
 - **THEN** clicking outside the dropdown SHALL close it
 
-#### Scenario: Filter options loading
-- **WHEN** the page loads
-- **THEN** workcenter groups and families SHALL load from `GET /api/resource/history/options`
-
-#### Scenario: Equipment type checkboxes
-- **WHEN** user toggles a checkbox (生產設備, 重點設備, 監控設備)
-- **THEN** the next query SHALL include the corresponding filter parameter
+#### Scenario: Filter options loading
+- **WHEN** the page loads
+- **THEN** workcenter groups and families SHALL load from `GET /api/resource/history/options`
+- **THEN** machine candidates SHALL be derivable before first query from loaded option resources
+
+#### Scenario: Upstream filters narrow downstream options
+- **WHEN** user changes upstream filters (`workcenterGroups`, `families`, equipment-type flags)
+- **THEN** machine options SHALL be recomputed to only include matching resources
+- **THEN** narrowed options SHALL be reflected immediately in filter controls
+
+#### Scenario: Invalid selected machines are pruned
+- **WHEN** upstream filters change and selected machines are no longer valid
+- **THEN** invalid selected machine values SHALL be removed automatically
+- **THEN** remaining valid selected machine values SHALL be preserved
+
+#### Scenario: Equipment type checkboxes
+- **WHEN** user toggles a checkbox (生產設備, 重點設備, 監控設備)
+- **THEN** the next query SHALL include the corresponding filter parameter
+- **THEN** option narrowing SHALL also honor the same checkbox conditions
 
 ### Requirement: Resource History page SHALL support CSV export
 The page SHALL allow users to export the current query results as CSV.
diff --git a/src/mes_dashboard/routes/reject_history_routes.py b/src/mes_dashboard/routes/reject_history_routes.py
index a08c118..2d88e2b 100644
--- a/src/mes_dashboard/routes/reject_history_routes.py
+++ b/src/mes_dashboard/routes/reject_history_routes.py
@@ -3,11 +3,13 @@
 
 from __future__ import annotations
 
+import os
 from datetime import date, timedelta
 from typing import Optional
 
 from flask import Blueprint, Response, jsonify, request
 
+from mes_dashboard.core.cache import cache_get, cache_set, make_cache_key
 from mes_dashboard.core.rate_limit import configured_rate_limit
 from mes_dashboard.services.reject_history_service import (
     export_csv,
@@ -20,6 +22,9 @@ from mes_dashboard.services.reject_history_service import (
 )
 
 reject_history_bp = Blueprint("reject_history", __name__)
+_REJECT_HISTORY_OPTIONS_CACHE_TTL_SECONDS = int(
+    os.getenv("REJECT_HISTORY_OPTIONS_CACHE_TTL_SECONDS", "14400")
+)
 
 _REJECT_HISTORY_LIST_RATE_LIMIT = configured_rate_limit(
     bucket="reject-history-list",
@@ -83,6 +88,16 @@ def _parse_multi_param(name: str) -> list[str]:
     return deduped
 
 
+def _normalized_list_for_cache(values: Optional[list[str]]) -> Optional[list[str]]:
+    if not values:
+        return None
+    return sorted({
+        str(value).strip()
+        for value in values
+        if str(value).strip()
+    })
+
+
 def _extract_meta(
     payload: dict,
     include_excluded_scrap: bool,
@@ -135,10 +150,41 @@ def api_reject_history_options():
     if bool_error:
         return jsonify(bool_error[0]), bool_error[1]
 
+    workcenter_groups = _parse_multi_param("workcenter_groups") or None
+    packages = _parse_multi_param("packages") or None
+    categories = _parse_multi_param("categories") or None
+
+    reasons = _parse_multi_param("reasons")
+    single_reason = _parse_multi_param("reason")
+    for reason in single_reason:
+        if reason not in reasons:
+            reasons.append(reason)
+    reasons = reasons or None
+
+    cache_filters = {
+        "start_date": start_date,
+        "end_date": end_date,
+        "workcenter_groups": _normalized_list_for_cache(workcenter_groups),
+        "packages": _normalized_list_for_cache(packages),
+        "reasons": _normalized_list_for_cache(reasons),
+        "categories": _normalized_list_for_cache(categories),
+        "include_excluded_scrap": bool(include_excluded_scrap),
+        "exclude_material_scrap": bool(exclude_material_scrap),
+        "exclude_pb_diode": bool(exclude_pb_diode),
+    }
+    cache_key = make_cache_key("reject_history_options_v2", filters=cache_filters)
+    cached_payload = cache_get(cache_key)
+    if cached_payload is not None:
+        return jsonify(cached_payload)
+
     try:
         result = get_filter_options(
             start_date=start_date,
             end_date=end_date,
+            workcenter_groups=workcenter_groups,
+            packages=packages,
+            reasons=reasons,
+            categories=categories,
             include_excluded_scrap=include_excluded_scrap,
             exclude_material_scrap=exclude_material_scrap,
             exclude_pb_diode=exclude_pb_diode,
@@ -149,7 +195,13 @@ def api_reject_history_options():
             exclude_material_scrap,
             exclude_pb_diode,
         )
-        return jsonify({"success": True, "data": data, "meta": meta})
+        payload = {"success": True, "data": data, "meta": meta}
+        cache_set(
+            cache_key,
+            payload,
+            ttl=max(_REJECT_HISTORY_OPTIONS_CACHE_TTL_SECONDS, 1),
+        )
+        return jsonify(payload)
     except ValueError as exc:
         return jsonify({"success": False, "error": str(exc)}), 400
     except Exception:
diff --git a/src/mes_dashboard/services/reject_history_service.py b/src/mes_dashboard/services/reject_history_service.py
index 8e37397..f10534a 100644
--- a/src/mes_dashboard/services/reject_history_service.py
+++ b/src/mes_dashboard/services/reject_history_service.py
@@ -12,7 +12,6 @@ from typing import Any, Dict, Generator, Iterable, Optional
 import pandas as pd
 
 from mes_dashboard.core.database import read_sql_df
-from mes_dashboard.services.filter_cache import get_workcenter_groups
 from mes_dashboard.services.scrap_reason_exclusion_cache import get_excluded_reasons
 from mes_dashboard.sql import QueryBuilder, SQLLoader
 
@@ -85,6 +84,22 @@ def _to_date_str(value: Any) -> str:
         return text
 
 
+def _to_datetime_str(value: Any) -> str:
+    if isinstance(value, datetime):
+        return value.strftime("%Y-%m-%d %H:%M:%S")
+    if isinstance(value, pd.Timestamp):
+        return value.to_pydatetime().strftime("%Y-%m-%d %H:%M:%S")
+    if isinstance(value, date):
+        return value.strftime("%Y-%m-%d")
+    text = _normalize_text(value)
+    if not text:
+        return ""
+    try:
+        return pd.to_datetime(text).strftime("%Y-%m-%d %H:%M:%S")
+    except Exception:
+        return text
+
+
 def _date_bucket_expr(granularity: str) -> str:
     if granularity == "week":
         return "TRUNC(b.TXN_DAY, 'IW')"
@@ -295,67 +310,85 @@ def _list_to_csv(
         buffer.truncate(0)
 
 
+def _extract_distinct_text_values(df: pd.DataFrame, column: str) -> list[str]:
+    if df is None or df.empty or column not in df.columns:
+        return []
+    return sorted({
+        _normalize_text(value)
+        for value in df[column].dropna()
+        if _normalize_text(value)
+    })
+
+
+def _extract_workcenter_group_options(df: pd.DataFrame) -> list[dict[str, Any]]:
+    if df is None or df.empty or "WORKCENTER_GROUP" not in df.columns:
+        return []
+
+    sequence_by_name: dict[str, int] = {}
+    for _, row in df.iterrows():
+        name = _normalize_text(row.get("WORKCENTER_GROUP"))
+        if not name:
+            continue
+        sequence = _as_int(row.get("WORKCENTERSEQUENCE_GROUP"))
+        if name not in sequence_by_name:
+            sequence_by_name[name] = sequence
+            continue
+        sequence_by_name[name] = min(sequence_by_name[name], sequence)
+
+    ordered_names = sorted(
+        sequence_by_name.keys(),
+        key=lambda item: (sequence_by_name[item], item),
+    )
+    return [{"name": name, "sequence": sequence_by_name[name]} for name in ordered_names]
+
+
+def _has_material_scrap(df: pd.DataFrame) -> bool:
+    if df is None or df.empty or "SCRAP_OBJECTTYPE" not in df.columns:
+        return False
+    return (
+        df["SCRAP_OBJECTTYPE"]
+        .map(lambda value: _normalize_text(value).upper())
+        .eq("MATERIAL")
+        .any()
+    )
+
+
 def get_filter_options(
     *,
     start_date: str,
     end_date: str,
+    workcenter_groups: Optional[list[str]] = None,
+    packages: Optional[list[str]] = None,
+    reasons: Optional[list[str]] = None,
+    categories: Optional[list[str]] = None,
     include_excluded_scrap: bool = False,
     exclude_material_scrap: bool = True,
     exclude_pb_diode: bool = True,
 ) -> dict[str, Any]:
-    """Return workcenter-group / package / reason options (single DB query)."""
+    """Return options under current draft filter context with one SQL round-trip."""
     _validate_range(start_date, end_date)
 
     where_clause, params, meta = _build_where_clause(
+        workcenter_groups=workcenter_groups,
+        packages=packages,
+        reasons=reasons,
+        categories=categories,
         include_excluded_scrap=include_excluded_scrap,
         exclude_material_scrap=exclude_material_scrap,
         exclude_pb_diode=exclude_pb_diode,
     )
     sql = _prepare_sql("filter_options", where_clause=where_clause)
     df = read_sql_df(sql, _common_params(start_date, end_date, params))
+    if df is None:
+        df = pd.DataFrame()
 
-    reasons: list[str] = []
-    packages: list[str] = []
-    has_material_option = False
-
-    if df is not None and not df.empty:
-        reasons = sorted({
-            _normalize_text(v)
-            for v in df["REASON"].dropna()
-            if _normalize_text(v)
-        })
-        packages = sorted({
-            _normalize_text(v)
-            for v in df["PACKAGE"].dropna()
-            if _normalize_text(v)
-        })
-        if "SCRAP_OBJECTTYPE" in df.columns:
-            has_material_option = (
-                df["SCRAP_OBJECTTYPE"]
-                .apply(lambda v: str(v or "").strip().upper())
-                .eq("MATERIAL")
-                .any()
-            )
-
-    groups_raw = get_workcenter_groups() or []
-    workcenter_groups = []
-    for item in groups_raw:
-        name = _normalize_text(item.get("name"))
-        if not name:
-            continue
-        workcenter_groups.append(
-            {
-                "name": name,
-                "sequence": _as_int(item.get("sequence")),
-            }
-        )
-
-    reason_options = sorted(set(reasons))
-    if has_material_option and MATERIAL_REASON_OPTION not in reason_options:
+    reason_options = _extract_distinct_text_values(df, "REASON")
+    if _has_material_scrap(df) and MATERIAL_REASON_OPTION not in reason_options:
         reason_options.append(MATERIAL_REASON_OPTION)
+
     return {
-        "workcenter_groups": workcenter_groups,
-        "packages": sorted(set(packages)),
+        "workcenter_groups": _extract_workcenter_group_options(df),
+        "packages": _extract_distinct_text_values(df, "PACKAGE"),
         "reasons": reason_options,
         "meta": meta,
     }
@@ -576,6 +609,7 @@ def query_list(
         for _, row in df.iterrows():
             items.append(
                 {
+                    "TXN_TIME": _to_datetime_str(row.get("TXN_TIME")),
                     "TXN_DAY": _to_date_str(row.get("TXN_DAY")),
                     "TXN_MONTH": _normalize_text(row.get("TXN_MONTH")),
                     "WORKCENTER_GROUP": _normalize_text(row.get("WORKCENTER_GROUP")),
diff --git a/src/mes_dashboard/sql/reject_history/filter_options.sql b/src/mes_dashboard/sql/reject_history/filter_options.sql
index 1834894..dd9cc44 100644
--- a/src/mes_dashboard/sql/reject_history/filter_options.sql
+++ b/src/mes_dashboard/sql/reject_history/filter_options.sql
@@ -5,13 +5,20 @@
 --   WHERE_CLAUSE (QueryBuilder-generated WHERE clause against alias b)
 
 {{ BASE_WITH_CTE }}
-SELECT
-    b.LOSSREASONNAME AS REASON,
-    b.PRODUCTLINENAME AS PACKAGE,
-    b.SCRAP_OBJECTTYPE,
-    SUM(b.REJECT_TOTAL_QTY) AS REJECT_TOTAL_QTY,
-    SUM(b.DEFECT_QTY) AS DEFECT_QTY
-FROM base b
-{{ WHERE_CLAUSE }}
-GROUP BY b.LOSSREASONNAME, b.PRODUCTLINENAME, b.SCRAP_OBJECTTYPE
-HAVING SUM(b.REJECT_TOTAL_QTY) > 0 OR SUM(b.DEFECT_QTY) > 0
+SELECT
+    b.WORKCENTER_GROUP,
+    b.WORKCENTERSEQUENCE_GROUP,
+    b.LOSSREASONNAME AS REASON,
+    b.PRODUCTLINENAME AS PACKAGE,
+    b.SCRAP_OBJECTTYPE,
+    SUM(b.REJECT_TOTAL_QTY) AS REJECT_TOTAL_QTY,
+    SUM(b.DEFECT_QTY) AS DEFECT_QTY
+FROM base b
+{{ WHERE_CLAUSE }}
+GROUP BY
+    b.WORKCENTER_GROUP,
+    b.WORKCENTERSEQUENCE_GROUP,
+    b.LOSSREASONNAME,
+    b.PRODUCTLINENAME,
+    b.SCRAP_OBJECTTYPE
+HAVING SUM(b.REJECT_TOTAL_QTY) > 0 OR SUM(b.DEFECT_QTY) > 0
diff --git a/src/mes_dashboard/sql/reject_history/list.sql b/src/mes_dashboard/sql/reject_history/list.sql
index 78b613a..4450b8c 100644
--- a/src/mes_dashboard/sql/reject_history/list.sql
+++ b/src/mes_dashboard/sql/reject_history/list.sql
@@ -23,6 +23,7 @@ paged AS (
     OFFSET :offset ROWS FETCH NEXT :limit ROWS ONLY
 )
 SELECT
+    p.TXN_TIME,
     p.TXN_DAY,
     p.TXN_MONTH,
     p.WORKCENTER_GROUP,
diff --git a/src/mes_dashboard/sql/reject_history/performance_daily_lot.sql b/src/mes_dashboard/sql/reject_history/performance_daily_lot.sql
index 6131e5f..ae9ffc3 100644
--- a/src/mes_dashboard/sql/reject_history/performance_daily_lot.sql
+++ b/src/mes_dashboard/sql/reject_history/performance_daily_lot.sql
@@ -18,6 +18,7 @@ WITH workcenter_map AS (
 ),
 reject_raw AS (
     SELECT
+        r.TXNDATE,
         TRUNC(r.TXNDATE) AS TXN_DAY,
         TO_CHAR(TRUNC(r.TXNDATE), 'YYYY-MM') AS TXN_MONTH,
         r.CONTAINERID,
@@ -90,6 +91,7 @@ daily_agg AS (
         LOSSREASONNAME,
         LOSSREASON_CODE,
         REJECTCATEGORYNAME,
+        MIN(TXNDATE) AS TXN_TIME,
         COUNT(*) AS REJECT_EVENT_ROWS,
         COUNT(DISTINCT PJ_WORKORDER) AS AFFECTED_WORKORDER_COUNT,
         SUM(CASE WHEN EVENT_RN = 1 THEN MOVEINQTY ELSE 0 END) AS MOVEIN_QTY,
@@ -122,6 +124,7 @@ daily_agg AS (
         REJECTCATEGORYNAME
 )
 SELECT
+    TXN_TIME,
     TXN_DAY,
     TXN_MONTH,
     CONTAINERID,
diff --git a/tests/test_reject_history_routes.py b/tests/test_reject_history_routes.py
index 64ed3fd..b4bbae7 100644
--- a/tests/test_reject_history_routes.py
+++ b/tests/test_reject_history_routes.py
@@ -40,6 +40,59 @@ class TestRejectHistoryPageRoute(unittest.TestCase):
 
 
 class TestRejectHistoryApiRoutes(TestRejectHistoryRoutesBase):
+    @patch('mes_dashboard.routes.reject_history_routes.get_filter_options')
+    @patch('mes_dashboard.routes.reject_history_routes.cache_get')
+    def test_options_uses_cache_hit_without_service_call(self, mock_cache_get, mock_options):
+        mock_cache_get.return_value = {
+            'success': True,
+            'data': {'workcenter_groups': [], 'packages': [], 'reasons': []},
+            'meta': {'include_excluded_scrap': False},
+        }
+
+        response = self.client.get(
+            '/api/reject-history/options?start_date=2026-02-01&end_date=2026-02-07'
+        )
+        payload = json.loads(response.data)
+
+        self.assertEqual(response.status_code, 200)
+        self.assertTrue(payload['success'])
+        self.assertIn('data', payload)
+        mock_options.assert_not_called()
+
+    @patch('mes_dashboard.routes.reject_history_routes.get_filter_options')
+    def test_options_passes_full_draft_filters(self, mock_options):
+        mock_options.return_value = {
+            'workcenter_groups': [],
+            'packages': [],
+            'reasons': [],
+            'meta': {},
+        }
+
+        response = self.client.get(
+            '/api/reject-history/options'
+            '?start_date=2026-02-01'
+            '&end_date=2026-02-07'
+            '&workcenter_groups=WB'
+            '&workcenter_groups=TEST'
+            '&packages=PKG-A'
+            '&reasons=001_A'
+            '&reason=002_B'
+            '&include_excluded_scrap=true'
+            '&exclude_material_scrap=false'
+            '&exclude_pb_diode=true'
+        )
+        payload = json.loads(response.data)
+
+        self.assertEqual(response.status_code, 200)
+        self.assertTrue(payload['success'])
+        _, kwargs = mock_options.call_args
+        self.assertEqual(kwargs['workcenter_groups'], ['WB', 'TEST'])
+        self.assertEqual(kwargs['packages'], ['PKG-A'])
+        self.assertEqual(kwargs['reasons'], ['001_A', '002_B'])
+        self.assertIs(kwargs['include_excluded_scrap'], True)
+        self.assertIs(kwargs['exclude_material_scrap'], False)
+        self.assertIs(kwargs['exclude_pb_diode'], True)
+
     def test_summary_missing_dates_returns_400(self):
         response = self.client.get('/api/reject-history/summary')
         payload = json.loads(response.data)
diff --git a/tests/test_reject_history_service.py b/tests/test_reject_history_service.py
index bd3f34e..68a59cb 100644
--- a/tests/test_reject_history_service.py
+++ b/tests/test_reject_history_service.py
@@ -115,47 +115,66 @@ def test_build_where_clause_include_override_skips_reason_prefix_policy(monkeypa
 
 def test_get_filter_options_includes_packages(monkeypatch):
     monkeypatch.setattr(svc, "get_excluded_reasons", lambda force_refresh=False: set())
-    monkeypatch.setattr(
-        svc,
-        "get_workcenter_groups",
-        lambda: [
-            {"name": "WB", "sequence": 1},
-            {"name": "FA", "sequence": 2},
-        ],
-    )
+    captured: dict = {}
 
-    def _fake_read_sql_df(sql, _params=None):
-        if "AS REASON" in sql:
-            return pd.DataFrame([{"REASON": "R1"}, {"REASON": "R2"}])
-        if "AS PACKAGE" in sql:
-            return pd.DataFrame([{"PACKAGE": "PKG-A"}, {"PACKAGE": "PKG-B"}])
-        return pd.DataFrame()
+    def _fake_read_sql_df(_sql, params=None):
+        captured["params"] = dict(params or {})
+        return pd.DataFrame(
+            [
+                {
+                    "WORKCENTER_GROUP": "WB",
+                    "WORKCENTERSEQUENCE_GROUP": 1,
+                    "REASON": "R1",
+                    "PACKAGE": "PKG-A",
+                    "SCRAP_OBJECTTYPE": "LOT",
+                },
+                {
+                    "WORKCENTER_GROUP": "FA",
+                    "WORKCENTERSEQUENCE_GROUP": 5,
+                    "REASON": "R2",
+                    "PACKAGE": "PKG-B",
+                    "SCRAP_OBJECTTYPE": "LOT",
+                },
+            ]
+        )
 
     monkeypatch.setattr(svc, "read_sql_df", _fake_read_sql_df)
 
     result = svc.get_filter_options(
         start_date="2026-02-01",
         end_date="2026-02-07",
+        workcenter_groups=["WB"],
+        packages=["PKG-A"],
+        reasons=["R1"],
         include_excluded_scrap=False,
     )
 
     assert result["reasons"] == ["R1", "R2"]
     assert result["packages"] == ["PKG-A", "PKG-B"]
     assert result["workcenter_groups"][0]["name"] == "WB"
+    assert result["workcenter_groups"][1]["name"] == "FA"
+
+    assert captured["params"]["start_date"] == "2026-02-01"
+    assert captured["params"]["end_date"] == "2026-02-07"
+    assert "WB" in captured["params"].values()
+    assert "PKG-A" in captured["params"].values()
+    assert "R1" in captured["params"].values()
 
 
 def test_get_filter_options_appends_material_reason_option(monkeypatch):
     monkeypatch.setattr(svc, "get_excluded_reasons", lambda force_refresh=False: set())
-    monkeypatch.setattr(svc, "get_workcenter_groups", lambda: [])
-
-    def _fake_read_sql_df(sql, _params=None):
-        if "AS REASON" in sql:
-            return pd.DataFrame([{"REASON": "001_TEST"}])
-        if "AS PACKAGE" in sql:
-            return pd.DataFrame([{"PACKAGE": "PKG-A"}])
-        if "AS HAS_MATERIAL" in sql:
-            return pd.DataFrame([{"HAS_MATERIAL": 1}])
-        return pd.DataFrame()
+    def _fake_read_sql_df(_sql, _params=None):
+        return pd.DataFrame(
+            [
+                {
+                    "WORKCENTER_GROUP": "WB",
+                    "WORKCENTERSEQUENCE_GROUP": 1,
+                    "REASON": "001_TEST",
+                    "PACKAGE": "PKG-A",
+                    "SCRAP_OBJECTTYPE": "MATERIAL",
+                }
+            ]
+        )
 
     monkeypatch.setattr(svc, "read_sql_df", _fake_read_sql_df)