diff --git a/apps/backend/src/db/migrations/152_consignment_internal_match_cleanup.sql b/apps/backend/src/db/migrations/152_consignment_internal_match_cleanup.sql
new file mode 100644
index 00000000..b981556d
--- /dev/null
+++ b/apps/backend/src/db/migrations/152_consignment_internal_match_cleanup.sql
@@ -0,0 +1,12 @@
+-- 152_consignment_internal_match_cleanup.sql
+-- 「超时后回大厅」改为手动匹配的固定行为：清理配置里的 internalMatch.fallbackToHall。
+-- 147–151 已应用不可回改，这里用数据迁移清理历史草稿与已发布快照。
+-- 幂等：仅删除存在该 key 的记录。
+
+UPDATE consignment_profiles
+SET config_json = config_json #- '{internalMatch,fallbackToHall}'
+WHERE config_json #> '{internalMatch,fallbackToHall}' IS NOT NULL;
+
+UPDATE consignment_profile_versions
+SET config_json = config_json #- '{internalMatch,fallbackToHall}'
+WHERE config_json #> '{internalMatch,fallbackToHall}' IS NOT NULL;
diff --git a/apps/backend/src/services/worker-platform/consignment-before-publish-match.test.ts b/apps/backend/src/services/worker-platform/consignment-before-publish-match.test.ts
index 56d5e7e2..100c43cb 100644
--- a/apps/backend/src/services/worker-platform/consignment-before-publish-match.test.ts
+++ b/apps/backend/src/services/worker-platform/consignment-before-publish-match.test.ts
@@ -50,14 +50,14 @@ test('补资料链路先试匹配，未命中才进入 manual 内部匹配', asy
   assert.ok(enterIndex > tryIndex, '试匹配必须在进入内部匹配之前')
 })
 
-test('内部匹配超时：fallbackToHall=false 时重新匹配，最多 3 次', async () => {
+test('内部匹配超时一律回大厅，不再支持超时重匹配', async () => {
   const source = await readFile(ENGINE, 'utf8')
-  assert.ok(source.includes('export const MAX_INTERNAL_MATCH_ATTEMPTS = 3'))
+  assert.ok(!source.includes('MAX_INTERNAL_MATCH_ATTEMPTS'), '重匹配次数上限必须删除')
   const start = source.indexOf('export async function expireConsignmentInternalMatching')
   assert.ok(start >= 0, '找不到 expireConsignmentInternalMatching')
-  const body = source.slice(start, start + 3000)
-  assert.ok(body.includes('fallbackToHall'), '必须读取超时回大厅开关')
-  assert.ok(body.includes('MAX_INTERNAL_MATCH_ATTEMPTS'), '必须有重试次数上限')
-  assert.ok(body.includes('startConsignmentRematch'), '关闭回大厅时要重新匹配')
-  assert.ok(body.includes("status = 'open'"), '超过次数或失败后仍要回大厅兜底')
+  const end = source.indexOf('export async function', start + 1)
+  const body = source.slice(start, end > start ? end : start + 2000)
+  assert.ok(!body.includes('fallbackToHall'), '到期逻辑不得再读取回大厅开关')
+  assert.ok(!body.includes('startConsignmentRematch'), '到期逻辑不得再调用重匹配')
+  assert.ok(body.includes("status = 'open'"), '到期必须回大厅')
 })
diff --git a/apps/backend/src/services/worker-platform/consignment-match-engine-config.test.ts b/apps/backend/src/services/worker-platform/consignment-match-engine-config.test.ts
index 70c60e32..98aa958d 100644
--- a/apps/backend/src/services/worker-platform/consignment-match-engine-config.test.ts
+++ b/apps/backend/src/services/worker-platform/consignment-match-engine-config.test.ts
@@ -15,7 +15,7 @@ test('内部匹配等待时长：0/负数/缺失都归一为 0（直接发大厅
   assert.equal(resolveInternalMatchDelayMinutes({ delayMinutes: '12.6' }), 13)
 })
 
-test('内部匹配入口：0 分钟必须直接返回，不能依赖 fallbackToHall 进入 internal_matching', async () => {
+test('内部匹配入口：0 分钟必须直接返回，禁止进入 internal_matching', async () => {
   const source = await readFile(
     new URL('./consignment-match-engine-service.ts', import.meta.url),
     'utf8',
@@ -35,10 +35,6 @@ test('内部匹配入口：0 分钟必须直接返回，不能依赖 fallbackToH
     body.includes('if (delayMinutes <= 0) return false'),
     '0 分钟必须直接返回，禁止进入 internal_matching',
   )
-  assert.ok(
-    !body.includes('delayMinutes <= 0 && !profile.config.internalMatch.fallbackToHall'),
-    '不允许再用 fallbackToHall 绕过 0 分钟保护（会生成无截止时间的悬空工单）',
-  )
 })
 
 test('匹配改写报酬：首次固化原值，所有统一释放路径都必须恢复', async () => {
diff --git a/apps/backend/src/services/worker-platform/consignment-match-engine-guards.test.ts b/apps/backend/src/services/worker-platform/consignment-match-engine-guards.test.ts
index b3bae116..ea451f12 100644
--- a/apps/backend/src/services/worker-platform/consignment-match-engine-guards.test.ts
+++ b/apps/backend/src/services/worker-platform/consignment-match-engine-guards.test.ts
@@ -41,7 +41,7 @@ test('手动匹配不再在事务外改状态：数量不足/并发占库失败
   )
 })
 
-test('apply 事务内部：允许起始状态、整单检查有效份额、拼单补截止时间', async () => {
+test('apply 事务内部：允许起始状态、整单检查有效份额、拼单必须一次拼满', async () => {
   const source = await readFile(ENGINE, 'utf8')
   const wholeStart = source.indexOf('async function applyWholeOrderMatch')
   const wholeEnd = source.indexOf('async function applySharingMatch', wholeStart)
@@ -66,9 +66,16 @@ test('apply 事务内部：允许起始状态、整单检查有效份额、拼
   assert.ok(sharingStart >= 0 && sharingEnd > sharingStart, '找不到 applySharingMatch')
   const sharing = source.slice(sharingStart, sharingEnd)
   assert.ok(
-    sharing.includes('fallbackDeadline') &&
-      sharing.includes('internal_match_deadline_at IS NULL THEN $5'),
-    '拼单部分成功时必须补内部匹配截止时间',
+    sharing.includes('planConsignmentSharingTakes') && sharing.includes("reason: 'insufficient'"),
+    '拼单必须先规划；一次拼不满时必须整单失败',
+  )
+  assert.ok(
+    !sharing.includes('fallbackDeadline') && !sharing.includes('const nextStatus'),
+    '拼单不允许部分成功，不能再进入 internal_matching 等剩余份额',
+  )
+  assert.ok(
+    sharing.includes('toStatus: WORK_ORDER_STATUS.IN_PROGRESS'),
+    '拼单成功必须直接进入 in_progress',
   )
   assert.ok(
     sharing.includes('const shareGrossFenPerUnit =') &&
diff --git a/apps/backend/src/services/worker-platform/consignment-match-engine-service.ts b/apps/backend/src/services/worker-platform/consignment-match-engine-service.ts
index 58ac5269..08b76488 100644
--- a/apps/backend/src/services/worker-platform/consignment-match-engine-service.ts
+++ b/apps/backend/src/services/worker-platform/consignment-match-engine-service.ts
@@ -339,9 +339,6 @@ export async function resolveProfileForWorkOrder(
   return resolveConsignmentProfileForCategory(workOrder.category_id)
 }
 
-/** 内部匹配超时后最多重新匹配的次数（fallbackToHall=false 时生效）。 */
-export const MAX_INTERNAL_MATCH_ATTEMPTS = 3
-
 /**
  * 发布前即时匹配（仅 matching.mode='auto'）：
  * 工单仍在 unassigned 时直接尝试占库，命中后由 apply 事务改成 in_progress，
@@ -402,23 +399,35 @@ export async function tryMatchConsignmentWorkOrderBeforePublish(
     }
 
     if (workOrder.sharing_enabled && Number(workOrder.sharing_total_quantity || 1) > 1) {
-      const created = await applySharingMatch({ workOrder, profile }, candidates, context)
+      const sharing = await applySharingMatch({ workOrder, profile }, candidates, context)
       await recordConsignmentMatchLog({
         ...logBase,
-        result: created > 0 ? 'matched' : 'failed',
-        reasonCode: created > 0 ? 'auto_sharing_matched_before_publish' : 'sharing_not_applied',
-        reasonText: created > 0 ? '' : '发布前拼单匹配未创建任何份额',
+        result: sharing.createdCount > 0 ? 'matched' : 'failed',
+        reasonCode:
+          sharing.createdCount > 0
+            ? 'auto_sharing_matched_before_publish'
+            : sharing.reason === 'insufficient'
+              ? 'sharing_quantity_insufficient'
+              : 'sharing_not_applied',
+        reasonText:
+          sharing.createdCount > 0
+            ? ''
+            : sharing.reason === 'insufficient'
+              ? `拼单必须一次拼满：还差 ${sharing.requiredQuantity} 份，可用 ${sharing.availableQuantity} 份`
+              : '发布前拼单匹配未生效（库存或工单状态已变化）',
         candidateCount: candidates.length,
-        matchedCount: created,
+        matchedCount: sharing.createdCount,
         durationMs: Date.now() - startedAt,
         payload: {
           phase: 'before_publish',
           partial: context.partial,
           specConflicts: context.specConflicts,
+          requiredQuantity: sharing.requiredQuantity,
+          availableQuantity: sharing.availableQuantity,
           inventoryIds: candidates.map(({ inventory }) => Number(inventory.id)),
         },
       })
-      return created > 0
+      return sharing.createdCount > 0
     }
 
     const requiredQuantity = Math.max(1, Number(workOrder.sharing_total_quantity || 1))
@@ -598,7 +607,7 @@ export async function fallbackConsignmentWorkOrderToHall(
 }
 
 /**
- * 超时「重新匹配」：把工单重新放回内部匹配池，并排除原卖家/原库存。
+ * 代练超时「重新匹配」：把工单重新放回内部匹配池，并排除原卖家/原库存。
  * 分类关闭匹配、等待时长为 0 或找不到配置时，退回大厅，避免工单卡在无人处理的状态。
  */
 export async function startConsignmentRematch(
@@ -968,174 +977,227 @@ async function applyWholeOrderMatch(
   return result.applied
 }
 
+export type ConsignmentSharingPlanItem = {
+  inventory: ConsignmentInventoryRow
+  take: number
+}
+
+/**
+ * 拼单份额规划：按候选库存顺序计算一次能拿走的份额，不写库。
+ * outstanding > 0 表示当前候选无法一次拼满，调用方必须整单失败。
+ */
+export function planConsignmentSharingTakes(
+  candidates: Array<{ inventory: ConsignmentInventoryRow }>,
+  remainingQuantity: number,
+  friendGift: boolean,
+): { plan: ConsignmentSharingPlanItem[]; outstanding: number } {
+  let remaining = Math.max(0, Math.round(Number(remainingQuantity || 0)))
+  const plan: ConsignmentSharingPlanItem[] = []
+  for (const { inventory } of candidates) {
+    if (remaining <= 0) break
+    if (!inventory.worker_id) continue
+    const available = Math.max(0, Math.round(Number(inventory.remaining_quantity ?? 1)))
+    if (friendGift && available > remaining) continue
+    const take = friendGift ? available : Math.min(available, remaining)
+    if (take <= 0) continue
+    plan.push({ inventory, take })
+    remaining -= take
+  }
+  return { plan, outstanding: remaining }
+}
+
+type ConsignmentSharingApplyResult = {
+  createdCount: number
+  reason: 'matched' | 'insufficient' | 'not_applied'
+  requiredQuantity: number
+  availableQuantity: number
+  sms: ConsignmentMatchSmsPayload[]
+}
+
+class ConsignmentSharingRollbackError extends Error {}
+
 async function applySharingMatch(
   input: MatchCandidate,
   candidates: ConsignmentMatchInventoryCandidate[],
   context: ConsignmentMatchContext = { matchType: 'auto' },
-): Promise<number> {
+): Promise<ConsignmentSharingApplyResult> {
   const { workOrder, profile } = input
   const now = nowIso()
   const totalQuantity = Math.max(1, Number(workOrder.sharing_total_quantity || 1))
-  if (!workOrder.id || totalQuantity <= 1) return 0
+  if (!workOrder.id || totalQuantity <= 1) {
+    return {
+      createdCount: 0,
+      reason: 'not_applied',
+      requiredQuantity: 0,
+      availableQuantity: 0,
+      sms: [],
+    }
+  }
   const manual = context.matchType === 'manual'
 
-  type ApplyResult = { createdCount: number; sms: ConsignmentMatchSmsPayload[] }
-  const result = await withTransaction<ApplyResult>(async (client: PoolClient) => {
-    const locked = await client.query<WorkOrderRow>(
-      'SELECT * FROM work_orders WHERE id = $1 FOR UPDATE',
-      [workOrder.id],
-    )
-    const current = locked.rows[0]
-    const allowedStartStatuses =
-      context.startStatuses ?? ([WORK_ORDER_STATUS.INTERNAL_MATCHING] as string[])
-    if (!current || !allowedStartStatuses.includes(current.status)) {
-      return { createdCount: 0, sms: [] }
-    }
-
-    const activeResult = await client.query<{ active: number | string }>(
-      `SELECT COALESCE(SUM(quantity), 0) AS active FROM work_order_shares WHERE work_order_id = $1 AND status IN ('joined', 'submitted', 'accepted')`,
-      [current.id],
-    )
-    let active = Number(activeResult.rows[0]?.active || 0)
-    let remaining = Math.max(0, totalQuantity - active)
-    if (remaining <= 0) return { createdCount: 0, sms: [] }
-
-    const config = profile?.config
-    const timeoutMinutes = config?.timeout.minutes ?? 30
-    const timeoutPolicy = config?.timeout.policy ?? 'reopen'
-    const deadline = addMinutesIso(timeoutMinutes, now)
-    // 库存没有售价时退回订单单价，避免份额报酬为 0；有售价时始终以库存净售价为准。
-    const fallbackOrderUnitRewardFen =
-      Math.max(0, Number(current.sharing_unit_reward || 0)) ||
-      Math.max(0, Number(current.reward_amount || 0)) / totalQuantity
-    const material = parseMaterial(current.material_json)
-    const source = parseMaterial(material.source)
-    const shopName = String(source.shopName || source.shopTitle || '').trim()
-
-    let createdCount = 0
-    let createdQuantity = 0
-    let firstInventoryId: number | null = null
-    let firstInventoryQuantity = 0
-    let firstShareGrossFenPerUnit = 0
-    let firstShareFeeFenPerUnit = 0
-    let firstShareNetFenPerUnit = 0
-    const smsPayloads: ConsignmentMatchSmsPayload[] = []
-    for (const { inventory } of candidates) {
-      if (remaining <= 0) break
-      if (!inventory.worker_id) continue
-      // 一条库存可以拆给多张订单：本次最多吃掉“订单还缺的份数”，
-      // 剩下的留在 remaining_quantity 里等下一单。好友赠送单必须整份匹配，避免同一份库存跨单赠礼。
-      const available = Math.max(0, Math.round(Number(inventory.remaining_quantity ?? 1)))
-      if (isFriendGiftAcceptanceMode(current.acceptance_mode) && available > remaining) continue
-      const take = isFriendGiftAcceptanceMode(current.acceptance_mode)
-        ? available
-        : Math.min(available, remaining)
-      if (take <= 0) continue
-      // 拼单寄卖的份额报酬按「库存售价」而不是订单单价结算：
-      // 卖家交付的是寄卖货，整单与拼单必须同口径（净售价 × 数量），
-      // 否则拼单会同时拿到订单报酬和寄卖货款，造成双付/多卖家漏付。
-      const shareGrossFenPerUnit =
-        inventorySalePriceFen(inventory) || Math.max(0, Math.round(fallbackOrderUnitRewardFen))
-      const shareReward = buildConsignmentShareReward(config, shareGrossFenPerUnit, take)
-
-      const allocation = await reserveConsignmentInventoryWithClient(client, {
-        inventoryId: Number(inventory.id),
-        workOrderId: Number(current.id),
-        quantity: take,
-        unitPriceFen: shareReward.grossPerUnitFen,
-        now,
-        boundOrderId: current.order_id ? Number(current.order_id) : null,
-        boundPlatformOrderId: current.platform_order_id || '',
-        shopName,
-      })
-      if (!allocation) continue
-
-      const share = await client.query<{ id: number }>(
-        `
-          INSERT INTO work_order_shares (
-            work_order_id, worker_id, quantity, unit_reward, share_reward, share_deposit,
-            status, acceptance_json, draft_acceptance_json, deadline_at, timeout_minutes,
-            timeout_policy, request_id, consignment_inventory_id, created_at, updated_at
-          ) VALUES (
-            $1, $2, $10, $3, $4, 0,
-            'joined', '{}'::jsonb, '{}'::jsonb, $5, $6,
-            $7, '', $8, $9, $9
-          )
-          RETURNING id
-        `,
-        [
-          current.id,
-          Number(inventory.worker_id),
-          shareReward.netPerUnitFen,
-          shareReward.netFen,
-          deadline,
-          timeoutMinutes,
-          timeoutPolicy,
-          Number(inventory.id),
-          now,
-          take,
-        ],
+  let result: ConsignmentSharingApplyResult
+  try {
+    result = await withTransaction<ConsignmentSharingApplyResult>(async (client: PoolClient) => {
+      const locked = await client.query<WorkOrderRow>(
+        'SELECT * FROM work_orders WHERE id = $1 FOR UPDATE',
+        [workOrder.id],
       )
-      const shareId = Number(share.rows[0]?.id || 0)
-      if (shareId <= 0) continue
-      await client.query(
-        'UPDATE consignment_inventory_allocations SET work_order_share_id = $1, updated_at = $2 WHERE id = $3',
-        [shareId, now, allocation.id],
-      )
-      createdCount += 1
-      createdQuantity += take
-      smsPayloads.push({
-        workOrder: current,
-        inventory,
-        quantity: take,
-        priceFen: inventorySalePriceFen(inventory),
-        matchType: manual ? 'manual' : 'auto',
-        matchedAt: now,
-      })
-      if (!firstInventoryId) {
-        firstInventoryId = Number(inventory.id)
-        firstInventoryQuantity = take
-        firstShareGrossFenPerUnit = shareReward.grossPerUnitFen
-        firstShareFeeFenPerUnit = Math.round(shareReward.feeFen / take)
-        firstShareNetFenPerUnit = shareReward.netPerUnitFen
+      const current = locked.rows[0]
+      const allowedStartStatuses =
+        context.startStatuses ?? ([WORK_ORDER_STATUS.INTERNAL_MATCHING] as string[])
+      if (!current || !allowedStartStatuses.includes(current.status)) {
+        return {
+          createdCount: 0,
+          reason: 'not_applied',
+          requiredQuantity: 0,
+          availableQuantity: 0,
+          sms: [],
+        }
       }
-      remaining -= take
-    }
 
-    if (createdCount > 0) {
-      active += createdQuantity
-      const nextStatus =
-        active >= totalQuantity
-          ? WORK_ORDER_STATUS.IN_PROGRESS
-          : WORK_ORDER_STATUS.INTERNAL_MATCHING
-      // 从大厅/待分配手动拼单、只匹配到部分份额时，必须补上新的内部匹配截止时间，
-      // 不能让工单停在「internal_matching 且 deadline 为空」的永久悬空状态。
-      const fallbackDeadline =
-        nextStatus === WORK_ORDER_STATUS.INTERNAL_MATCHING
-          ? addMinutesIso(Math.max(1, resolveInternalMatchDelayMinutes(config?.internalMatch)), now)
-          : null
+      const activeResult = await client.query<{ active: number | string }>(
+        `SELECT COALESCE(SUM(quantity), 0) AS active FROM work_order_shares WHERE work_order_id = $1 AND status IN ('joined', 'submitted', 'accepted')`,
+        [current.id],
+      )
+      const active = Number(activeResult.rows[0]?.active || 0)
+      const remaining = Math.max(0, totalQuantity - active)
+      if (remaining <= 0) {
+        return {
+          createdCount: 0,
+          reason: 'not_applied',
+          requiredQuantity: 0,
+          availableQuantity: 0,
+          sms: [],
+        }
+      }
+
+      const config = profile?.config
+      const timeoutMinutes = config?.timeout.minutes ?? 30
+      const timeoutPolicy = config?.timeout.policy ?? 'reopen'
+      const deadline = addMinutesIso(timeoutMinutes, now)
+      // 库存没有售价时退回订单单价，避免份额报酬为 0；有售价时始终以库存净售价为准。
+      const fallbackOrderUnitRewardFen =
+        Math.max(0, Number(current.sharing_unit_reward || 0)) ||
+        Math.max(0, Number(current.reward_amount || 0)) / totalQuantity
+      const material = parseMaterial(current.material_json)
+      const source = parseMaterial(material.source)
+      const shopName = String(source.shopName || source.shopTitle || '').trim()
+      const friendGift = isFriendGiftAcceptanceMode(current.acceptance_mode)
+
+      // 先规划再落库：拼单必须一次拼满，规划不足时一件库存都不占用。
+      const { plan, outstanding } = planConsignmentSharingTakes(candidates, remaining, friendGift)
+      if (outstanding > 0) {
+        return {
+          createdCount: 0,
+          reason: 'insufficient',
+          requiredQuantity: remaining,
+          availableQuantity: remaining - outstanding,
+          sms: [],
+        }
+      }
+
+      let createdCount = 0
+      let createdQuantity = 0
+      let firstInventoryId: number | null = null
+      let firstInventoryQuantity = 0
+      let firstShareGrossFenPerUnit = 0
+      let firstShareFeeFenPerUnit = 0
+      let firstShareNetFenPerUnit = 0
+      const smsPayloads: ConsignmentMatchSmsPayload[] = []
+      for (const { inventory, take } of plan) {
+        // 拼单寄卖的份额报酬按「库存售价」而不是订单单价结算：
+        // 卖家交付的是寄卖货，整单与拼单必须同口径（净售价 × 数量），
+        // 否则拼单会同时拿到订单报酬和寄卖货款，造成双付/多卖家漏付。
+        const shareGrossFenPerUnit =
+          inventorySalePriceFen(inventory) || Math.max(0, Math.round(fallbackOrderUnitRewardFen))
+        const shareReward = buildConsignmentShareReward(config, shareGrossFenPerUnit, take)
+
+        const allocation = await reserveConsignmentInventoryWithClient(client, {
+          inventoryId: Number(inventory.id),
+          workOrderId: Number(current.id),
+          quantity: take,
+          unitPriceFen: shareReward.grossPerUnitFen,
+          now,
+          boundOrderId: current.order_id ? Number(current.order_id) : null,
+          boundPlatformOrderId: current.platform_order_id || '',
+          shopName,
+        })
+        // 规划后库存被并发占用：整单回滚，绝不允许部分扣减/部分份额。
+        if (!allocation) throw new ConsignmentSharingRollbackError('inventory_unavailable')
+
+        const share = await client.query<{ id: number }>(
+          `
+            INSERT INTO work_order_shares (
+              work_order_id, worker_id, quantity, unit_reward, share_reward, share_deposit,
+              status, acceptance_json, draft_acceptance_json, deadline_at, timeout_minutes,
+              timeout_policy, request_id, consignment_inventory_id, created_at, updated_at
+            ) VALUES (
+              $1, $2, $10, $3, $4, 0,
+              'joined', '{}'::jsonb, '{}'::jsonb, $5, $6,
+              $7, '', $8, $9, $9
+            )
+            RETURNING id
+          `,
+          [
+            current.id,
+            Number(inventory.worker_id),
+            shareReward.netPerUnitFen,
+            shareReward.netFen,
+            deadline,
+            timeoutMinutes,
+            timeoutPolicy,
+            Number(inventory.id),
+            now,
+            take,
+          ],
+        )
+        const shareId = Number(share.rows[0]?.id || 0)
+        // 份额没落库时库存已经扣减，必须回滚，避免悬空 allocation。
+        if (shareId <= 0) throw new ConsignmentSharingRollbackError('share_not_created')
+        await client.query(
+          'UPDATE consignment_inventory_allocations SET work_order_share_id = $1, updated_at = $2 WHERE id = $3',
+          [shareId, now, allocation.id],
+        )
+        createdCount += 1
+        createdQuantity += take
+        smsPayloads.push({
+          workOrder: current,
+          inventory,
+          quantity: take,
+          priceFen: inventorySalePriceFen(inventory),
+          matchType: manual ? 'manual' : 'auto',
+          matchedAt: now,
+        })
+        if (!firstInventoryId) {
+          firstInventoryId = Number(inventory.id)
+          firstInventoryQuantity = take
+          firstShareGrossFenPerUnit = shareReward.grossPerUnitFen
+          firstShareFeeFenPerUnit = Math.round(shareReward.feeFen / take)
+          firstShareNetFenPerUnit = shareReward.netPerUnitFen
+        }
+      }
+
+      if (createdQuantity !== remaining) {
+        throw new ConsignmentSharingRollbackError('quantity_not_fulfilled')
+      }
+      const matchedQuantity = active + createdQuantity
+
       await client.query(
         `
           UPDATE work_orders
           SET status = $1,
               material_json = $2::jsonb,
-              assigned_at = CASE WHEN $1 = 'in_progress' THEN $3 ELSE assigned_at END,
-              internal_match_deadline_at = CASE
-                WHEN $1 = 'in_progress' THEN NULL
-                WHEN internal_match_deadline_at IS NULL THEN $5
-                ELSE internal_match_deadline_at END,
-              hall_visible_at = CASE
-                WHEN $1 = 'in_progress' THEN NULL
-                WHEN hall_visible_at IS NULL THEN $5
-                ELSE hall_visible_at END,
+              assigned_at = $3,
+              internal_match_deadline_at = NULL,
+              hall_visible_at = NULL,
               internal_match_attempts = COALESCE(internal_match_attempts, 0) + 1,
-              rematch_excluded_worker_id = CASE WHEN $1 = 'in_progress' THEN NULL ELSE rematch_excluded_worker_id END,
-              rematch_excluded_inventory_id = CASE WHEN $1 = 'in_progress' THEN NULL ELSE rematch_excluded_inventory_id END,
+              rematch_excluded_worker_id = NULL,
+              rematch_excluded_inventory_id = NULL,
               updated_at = $3
           WHERE id = $4
         `,
         [
-          nextStatus,
+          WORK_ORDER_STATUS.IN_PROGRESS,
           JSON.stringify({
             ...material,
             ...(firstInventoryId
@@ -1164,13 +1226,12 @@ async function applySharingMatch(
             consignmentSharing: {
               profileId: profile?.profileId ?? null,
               totalQuantity,
-              matchedQuantity: active,
+              matchedQuantity,
               matchedAt: now,
             },
           }),
           now,
           current.id,
-          fallbackDeadline,
         ],
       )
       await createWorkOrderEventWithClient(client, {
@@ -1179,11 +1240,11 @@ async function applySharingMatch(
         actorId: manual ? context.actorName || 'admin' : 'consignment_match',
         eventType: manual ? 'consignment_manual_sharing_matched' : 'consignment_sharing_matched',
         fromStatus: current.status,
-        toStatus: nextStatus,
+        toStatus: WORK_ORDER_STATUS.IN_PROGRESS,
         payloadJson: JSON.stringify({
           createdCount,
           createdQuantity,
-          activeQuantity: active,
+          activeQuantity: matchedQuantity,
           totalQuantity,
           shareRewardFenPerUnit: firstShareNetFenPerUnit,
           serviceFeeFenPerUnit: firstShareFeeFenPerUnit,
@@ -1201,13 +1262,30 @@ async function applySharingMatch(
         }),
         now,
       })
+      return {
+        createdCount,
+        reason: 'matched',
+        requiredQuantity: remaining,
+        availableQuantity: remaining,
+        sms: smsPayloads,
+      }
+    })
+  } catch (error) {
+    if (error instanceof ConsignmentSharingRollbackError) {
+      return {
+        createdCount: 0,
+        reason: 'not_applied',
+        requiredQuantity: 0,
+        availableQuantity: 0,
+        sms: [],
+      }
     }
-    return { createdCount, sms: smsPayloads }
-  })
+    throw error
+  }
   for (const sms of result.sms) {
     await sendConsignmentMatchSuccessSms(sms)
   }
-  return result.createdCount
+  return result
 }
 
 /** 自动匹配一批内部匹配工单：低价订单优先，精确规格，支持整单/拼单。 */
@@ -1284,19 +1362,21 @@ export async function autoMatchConsignmentWorkOrders(options: { limit?: number }
             ...evaluation.unknowns,
           ]),
         }
-        const created = await applySharingMatch({ workOrder, profile }, candidates, context)
-        if (created > 0) {
+        const sharing = await applySharingMatch({ workOrder, profile }, candidates, context)
+        if (sharing.createdCount > 0) {
           matched += 1
           await recordConsignmentMatchLog({
             ...logBase,
             result: 'matched',
             reasonCode: 'auto_sharing_matched',
             candidateCount: candidates.length,
-            matchedCount: created,
+            matchedCount: sharing.createdCount,
             durationMs: Date.now() - startedAt,
             payload: {
               partial: context.partial,
               specConflicts: context.specConflicts,
+              requiredQuantity: sharing.requiredQuantity,
+              availableQuantity: sharing.availableQuantity,
               inventoryIds: candidates.map(({ inventory }) => Number(inventory.id)),
             },
           })
@@ -1306,10 +1386,20 @@ export async function autoMatchConsignmentWorkOrders(options: { limit?: number }
           await recordConsignmentMatchLog({
             ...logBase,
             result: 'failed',
-            reasonCode: 'sharing_not_applied',
-            reasonText: '拼单匹配未创建任何份额（库存可能已被其它任务占用）',
+            reasonCode:
+              sharing.reason === 'insufficient'
+                ? 'sharing_quantity_insufficient'
+                : 'sharing_not_applied',
+            reasonText:
+              sharing.reason === 'insufficient'
+                ? `拼单必须一次拼满：还差 ${sharing.requiredQuantity} 份，可用 ${sharing.availableQuantity} 份`
+                : '拼单匹配未生效（库存或工单状态已变化）',
             candidateCount: candidates.length,
             durationMs: Date.now() - startedAt,
+            payload: {
+              requiredQuantity: sharing.requiredQuantity,
+              availableQuantity: sharing.availableQuantity,
+            },
           })
         }
       } else {
@@ -1384,11 +1474,9 @@ export async function autoMatchConsignmentWorkOrders(options: { limit?: number }
 }
 
 /**
- * 内部匹配超时：
- * - fallbackToHall=true（默认）：发回大厅；
- * - fallbackToHall=false：重新匹配（排除原卖家/库存），最多 MAX_INTERNAL_MATCH_ATTEMPTS 次；
- *   超过次数或重新匹配失败仍回大厅，避免工单永久悬空。
- * 拼单已占库存的份额不受影响，剩余份数继续抢单。
+ * 内部匹配超时：工单统一发回大厅。
+ * 「超时后回大厅」是手动匹配的固定行为，不再支持按配置重新匹配。
+ * 拼单已占库存的份额不受影响，剩余份数继续在大厅抢单。
  */
 export async function expireConsignmentInternalMatching(options: { now?: string } = {}) {
   const now = options.now || nowIso()
@@ -1401,22 +1489,7 @@ export async function expireConsignmentInternalMatching(options: { now?: string
     [now],
   )
   let expiredCount = 0
-  let rematched = 0
   for (const workOrder of expired.rows) {
-    const profile = await resolveProfileForWorkOrder(workOrder)
-    const fallbackToHall = profile?.config.internalMatch.fallbackToHall !== false
-    const attempts = Number(workOrder.internal_match_attempts || 0)
-    if (!fallbackToHall && attempts < MAX_INTERNAL_MATCH_ATTEMPTS) {
-      const started = await startConsignmentRematch(Number(workOrder.id), {}, now).catch(
-        () => false,
-      )
-      if (started) {
-        rematched += 1
-        continue
-      }
-      // 重新匹配失败时 startConsignmentRematch 内部已把工单放回大厅，
-      // 下面的 UPDATE 带 status='internal_matching' 条件，不会重复命中。
-    }
     const updated = await query<{ id: number }>(
       `
         UPDATE work_orders
@@ -1439,14 +1512,10 @@ export async function expireConsignmentInternalMatching(options: { now?: string
           payload_json, created_at
         ) VALUES ($1, 'system', 'consignment_match', 'consignment_internal_matching_expired', 'internal_matching', 'open', $2::jsonb, $3)
       `,
-      [
-        workOrder.id,
-        JSON.stringify({ expiredAt: now, attempts, fallbackToHall, rematched: false }),
-        now,
-      ],
+      [workOrder.id, JSON.stringify({ expiredAt: now }), now],
     )
   }
-  return { expired: expiredCount, rematched }
+  return { expired: expiredCount }
 }
 
 /** 后台手动匹配弹窗：列出同配置在库库存，并标注精确/差异/冲突。 */
@@ -1664,8 +1733,20 @@ async function runManualConsignmentMatch(input: {
   }
 
   if (workOrder.sharing_enabled && Number(workOrder.sharing_total_quantity || 1) > 1) {
-    const created = await applySharingMatch({ workOrder, profile }, selected, context)
-    return { matched: created > 0, matchedCount: created }
+    const sharing = await applySharingMatch({ workOrder, profile }, selected, context)
+    if (sharing.createdCount > 0) {
+      return { matched: true, matchedCount: sharing.createdCount }
+    }
+    if (sharing.reason === 'insufficient') {
+      throw createHttpError(
+        `拼单必须一次拼满：订单还缺 ${sharing.requiredQuantity} 份，所选库存只能提供 ${sharing.availableQuantity} 份`,
+        { statusCode: 409, errorCode: 'consignment_sharing_quantity_insufficient' },
+      )
+    }
+    throw createHttpError('工单状态或库存已变化，请刷新后重试', {
+      statusCode: 409,
+      errorCode: 'consignment_sharing_not_applied',
+    })
   }
 
   if (selected.length > 1) {
diff --git a/apps/backend/src/services/worker-platform/consignment-matching.integration.test.ts b/apps/backend/src/services/worker-platform/consignment-matching.integration.test.ts
index ada5c158..a49f19e4 100644
--- a/apps/backend/src/services/worker-platform/consignment-matching.integration.test.ts
+++ b/apps/backend/src/services/worker-platform/consignment-matching.integration.test.ts
@@ -215,7 +215,7 @@ const profileConfig = {
     exactOnly: true,
     preferLowReward: true,
   },
-  internalMatch: { delayMinutes: 30, fallbackToHall: true },
+  internalMatch: { delayMinutes: 30 },
   timeout: { minutes: 60, policy: 'reopen' },
   priceDrop: { enabled: true, hours: 72, mode: 'percent', value: 10 },
 }
diff --git a/apps/backend/src/services/worker-platform/consignment-profile-service.ts b/apps/backend/src/services/worker-platform/consignment-profile-service.ts
index dd60e1e9..3e5446af 100644
--- a/apps/backend/src/services/worker-platform/consignment-profile-service.ts
+++ b/apps/backend/src/services/worker-platform/consignment-profile-service.ts
@@ -52,7 +52,6 @@ export type ConsignmentMatchingConfig = {
 export type ConsignmentInternalMatchConfig = {
   /** 资料提交后等待内部库存匹配的分钟数；0 = 不等待，直接发大厅 */
   delayMinutes: number
-  fallbackToHall: boolean
 }
 
 export type ConsignmentTimeoutConfig = {
@@ -175,7 +174,6 @@ export const DEFAULT_CONSIGNMENT_PROFILE_CONFIG: ConsignmentProfileConfig = {
   },
   internalMatch: {
     delayMinutes: 30,
-    fallbackToHall: true,
   },
   timeout: {
     minutes: 30,
@@ -310,7 +308,6 @@ export function normalizeConsignmentProfileConfig(value: unknown): ConsignmentPr
     },
     internalMatch: {
       delayMinutes: integer(internalMatch.delayMinutes, 30, 0, 7 * 24 * 60),
-      fallbackToHall: bool(internalMatch.fallbackToHall, true),
     },
     timeout: {
       minutes: integer(timeout.minutes, 30, 0, 7 * 24 * 60),
diff --git a/apps/backend/src/services/worker-platform/consignment-sharing-plan.test.ts b/apps/backend/src/services/worker-platform/consignment-sharing-plan.test.ts
new file mode 100644
index 00000000..4c675ecb
--- /dev/null
+++ b/apps/backend/src/services/worker-platform/consignment-sharing-plan.test.ts
@@ -0,0 +1,87 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import type { ConsignmentInventoryRow } from '../../repositories/worker-platform/consignment-repo.js'
+import { planConsignmentSharingTakes } from './consignment-match-engine-service.js'
+
+function candidate(id: number, remaining: number, workerId = 1) {
+  return {
+    inventory: {
+      id,
+      worker_id: workerId,
+      remaining_quantity: remaining,
+    } as ConsignmentInventoryRow,
+  }
+}
+
+test('拼单规划：1+1 不足以一次拼满 3 份', () => {
+  const { plan, outstanding } = planConsignmentSharingTakes(
+    [candidate(1, 1), candidate(2, 1)],
+    3,
+    false,
+  )
+  assert.equal(plan.length, 2)
+  assert.equal(
+    plan.reduce((sum, item) => sum + item.take, 0),
+    2,
+  )
+  assert.equal(outstanding, 1)
+})
+
+test('拼单规划：2+1 一次拼满 3 份，多库存依次扣减', () => {
+  const { plan, outstanding } = planConsignmentSharingTakes(
+    [candidate(1, 2), candidate(2, 1), candidate(3, 5)],
+    3,
+    false,
+  )
+  assert.equal(outstanding, 0)
+  assert.deepEqual(
+    plan.map((item) => [item.inventory.id, item.take]),
+    [
+      [1, 2],
+      [2, 1],
+    ],
+  )
+})
+
+test('拼单规划：4+4 满足 5 份时第二条只取 1 份', () => {
+  const { plan, outstanding } = planConsignmentSharingTakes(
+    [candidate(1, 4), candidate(2, 4)],
+    5,
+    false,
+  )
+  assert.equal(outstanding, 0)
+  assert.deepEqual(
+    plan.map((item) => [item.inventory.id, item.take]),
+    [
+      [1, 4],
+      [2, 1],
+    ],
+  )
+})
+
+test('好友赠送：只能整份取，2+2 满足 4 份', () => {
+  const { plan, outstanding } = planConsignmentSharingTakes(
+    [candidate(1, 2), candidate(2, 2)],
+    4,
+    true,
+  )
+  assert.equal(outstanding, 0)
+  assert.deepEqual(
+    plan.map((item) => [item.inventory.id, item.take]),
+    [
+      [1, 2],
+      [2, 2],
+    ],
+  )
+})
+
+test('好友赠送：2+2 不能拼出 3 份，规划必须报缺口', () => {
+  const { plan, outstanding } = planConsignmentSharingTakes(
+    [candidate(1, 2), candidate(2, 2)],
+    3,
+    true,
+  )
+  assert.equal(plan.length, 1)
+  assert.equal(outstanding, 1)
+})
diff --git a/apps/frontend/src/pages/admin/panels/ConsignmentConfigPanel.tsx b/apps/frontend/src/pages/admin/panels/ConsignmentConfigPanel.tsx
index badb5549..858fdc85 100644
--- a/apps/frontend/src/pages/admin/panels/ConsignmentConfigPanel.tsx
+++ b/apps/frontend/src/pages/admin/panels/ConsignmentConfigPanel.tsx
@@ -90,7 +90,7 @@ type ConfigFormValues = {
     exactOnly: boolean
     preferLowReward: boolean
   }
-  internalMatch: { delayMinutes: number; fallbackToHall: boolean }
+  internalMatch: { delayMinutes: number }
   timeout: {
     hours: number
     policy: 'reopen' | 'cancel_release' | 'cancel_deduct' | 'rematch_release' | 'rematch_deduct'
@@ -201,7 +201,15 @@ function toFormValues(profile: ConsignmentProfile): ConfigFormValues {
       exactOnly: config.matching.exactOnly,
       preferLowReward: config.matching.preferLowReward,
     },
-    internalMatch: { ...config.internalMatch },
+    internalMatch: {
+      // 内部等待只属于手动匹配；非手动模式切回手动时给默认 30 分钟。
+      delayMinutes:
+        config.matching.mode === 'manual'
+          ? Number(config.internalMatch.delayMinutes || 0)
+          : Number(config.internalMatch.delayMinutes) > 0
+            ? Number(config.internalMatch.delayMinutes)
+            : 30,
+    },
     timeout: {
       hours: Math.max(0, Number(config.timeout.minutes ?? 30) / 60),
       policy: config.timeout.policy,
@@ -234,7 +242,7 @@ function emptyFormValues(): ConfigFormValues {
       exactOnly: true,
       preferLowReward: true,
     },
-    internalMatch: { delayMinutes: 30, fallbackToHall: true },
+    internalMatch: { delayMinutes: 30 },
     timeout: { hours: 0.5, policy: 'reopen' },
     priceDrop: { enabled: true, hours: 24, mode: 'percent', value: 10 },
   }
@@ -303,11 +311,9 @@ function buildPayload(
         preferLowReward: values.matching.preferLowReward,
       },
       internalMatch: {
-        // 关闭匹配时不再等待内部库存，直接进大厅。
+        // 内部等待只属于手动匹配：关闭匹配不再等待；自动匹配不使用等待窗口。
         delayMinutes:
           values.matching.mode === 'off' ? 0 : Number(values.internalMatch.delayMinutes || 0),
-        fallbackToHall:
-          values.matching.mode === 'off' ? false : values.internalMatch.fallbackToHall,
       },
       timeout: {
         minutes: Math.max(0, Math.round(Number(values.timeout.hours || 0) * 60)),
@@ -1720,7 +1726,7 @@ export default function ConsignmentConfigPanel() {
                       <ConsignmentSectionTitle
                         index="08"
                         title="匹配设置"
-                        description="匹配模式决定新单是否进入内部库存匹配队列"
+                        description="匹配模式决定新单如何匹配库存；内部等待仅手动匹配使用"
                       />
                     </div>
                     <div style={gridStyle}>
@@ -1755,41 +1761,21 @@ export default function ConsignmentConfigPanel() {
                           >
                             <Switch checkedChildren="优先" unCheckedChildren="不优先" />
                           </Form.Item>
-                          <Form.Item
-                            label="手动匹配等待（分钟）"
-                            name={['internalMatch', 'delayMinutes']}
-                            extra={
-                              matchingMode === 'auto'
-                                ? '自动匹配在发布时立即匹配，未命中直接进大厅，不使用等待窗口'
-                                : '仅手动匹配生效：工单在内部池等待运营挑库存'
-                            }
-                            style={{ marginBottom: 0 }}
-                          >
-                            <InputNumber
-                              min={0}
-                              precision={0}
-                              style={{ width: '100%' }}
-                              addonAfter="分钟"
-                              disabled={matchingMode === 'auto'}
-                            />
-                          </Form.Item>
-                          <Form.Item
-                            label="超时后回大厅"
-                            name={['internalMatch', 'fallbackToHall']}
-                            valuePropName="checked"
-                            extra={
-                              matchingMode === 'auto'
-                                ? '自动匹配未命中直接进大厅，不涉及此策略'
-                                : '关闭后超时重新匹配（最多 3 次），仍未命中回大厅'
-                            }
-                            style={{ marginBottom: 0 }}
-                          >
-                            <Switch
-                              checkedChildren="回大厅"
-                              unCheckedChildren="重新匹配"
-                              disabled={matchingMode === 'auto'}
-                            />
-                          </Form.Item>
+                          {matchingMode === 'manual' ? (
+                            <Form.Item
+                              label="手动匹配等待（分钟）"
+                              name={['internalMatch', 'delayMinutes']}
+                              extra="仅手动匹配生效：工单在内部池等待运营挑库存"
+                              style={{ marginBottom: 0 }}
+                            >
+                              <InputNumber
+                                min={0}
+                                precision={0}
+                                style={{ width: '100%' }}
+                                addonAfter="分钟"
+                              />
+                            </Form.Item>
+                          ) : null}
                         </>
                       ) : null}
                     </div>
@@ -1801,6 +1787,14 @@ export default function ConsignmentConfigPanel() {
                         message="关闭匹配后：新单直接进入接单大厅，不等待内部库存，也不会自动匹配。"
                       />
                     ) : null}
+                    {matchingMode === 'auto' ? (
+                      <Alert
+                        type="info"
+                        showIcon
+                        style={{ marginTop: 12 }}
+                        message="自动匹配：发布/补资料时立即匹配，未命中直接进大厅，不使用内部等待窗口。"
+                      />
+                    ) : null}
                   </section>
 
                   <section className="order-service-section">
diff --git a/apps/frontend/src/types/consignment.ts b/apps/frontend/src/types/consignment.ts
index 146c57af..605531c1 100644
--- a/apps/frontend/src/types/consignment.ts
+++ b/apps/frontend/src/types/consignment.ts
@@ -418,7 +418,7 @@ export type ConsignmentProfileConfig = {
     exactOnly: boolean
     preferLowReward: boolean
   }
-  internalMatch: { delayMinutes: number; fallbackToHall: boolean }
+  internalMatch: { delayMinutes: number }
   timeout: {
     minutes: number
     policy: 'reopen' | 'cancel_release' | 'cancel_deduct' | 'rematch_release' | 'rematch_deduct'
diff --git a/apps/frontend/tests/consignment-auto-match-publish.test.ts b/apps/frontend/tests/consignment-auto-match-publish.test.ts
index 873daf83..f299614f 100644
--- a/apps/frontend/tests/consignment-auto-match-publish.test.ts
+++ b/apps/frontend/tests/consignment-auto-match-publish.test.ts
@@ -10,21 +10,15 @@ function readPanelSource() {
   ).replace(/\r\n/g, '\n')
 }
 
-test('自动匹配：手动等待与超时策略在 auto 下禁用并给出说明', () => {
+test('手动匹配：只保留等待时长，不再提供「超时后回大厅」开关', () => {
   const source = readPanelSource()
   assert.ok(source.includes('label="手动匹配等待（分钟）"'), '等待时长文案必须明确只作用于手动匹配')
-  assert.ok(source.includes('label="超时后回大厅"'), '必须提供超时回大厅开关')
+  assert.ok(source.includes("matchingMode === 'manual' ? ("), '等待时长必须只在手动匹配下展示')
+  assert.ok(!source.includes('超时后回大厅'), '回大厅是固定行为，不应再有开关')
+  assert.ok(!source.includes('fallbackToHall'), '配置与表单必须移除 fallbackToHall')
   assert.ok(
-    source.includes('自动匹配在发布时立即匹配，未命中直接进大厅，不使用等待窗口'),
+    source.includes('自动匹配：发布/补资料时立即匹配，未命中直接进大厅，不使用内部等待窗口。'),
     'auto 模式必须说明不使用等待窗口',
   )
-  assert.ok(
-    source.includes('关闭后超时重新匹配（最多 3 次），仍未命中回大厅'),
-    '关闭回大厅时必须说明重试上限',
-  )
-  assert.ok(
-    (source.match(/disabled=\{matchingMode === 'auto'\}/g) || []).length >= 2,
-    '等待时长与超时策略在 auto 下都必须禁用',
-  )
   assert.ok(!source.includes('label="内部匹配等待（分钟）"'), '旧文案必须移除')
 })