diff --git a/ControlPanel/electron-ui/renderer.js b/ControlPanel/electron-ui/renderer.js
index f9fbb64..434bee3 100644
--- a/ControlPanel/electron-ui/renderer.js
+++ b/ControlPanel/electron-ui/renderer.js
@@ -374,7 +374,8 @@ function requestModelName({
   confirmLabel = "确认",
   danger = false,
   expectedValue = null,
-  expectedLabel = "输入内容"
+  expectedLabel = "输入内容",
+  ignoreCase = false
 }) {
   if (actionDialogState) closeActionDialog(null);
   elements.actionDialogTitle.textContent = title;
@@ -391,7 +392,13 @@ function requestModelName({
     elements.actionDialogInput.select();
   });
   return new Promise((resolve) => {
-    actionDialogState = { resolve, previousFocus, expectedValue, expectedLabel };
+    actionDialogState = {
+      resolve,
+      previousFocus,
+      expectedValue,
+      expectedLabel,
+      ignoreCase
+    };
   });
 }
 
@@ -400,17 +407,24 @@ elements.actionDialogForm.addEventListener("submit", (event) => {
   const value = elements.actionDialogInput.value.trim();
   const expectedValue = actionDialogState?.expectedValue;
   const expectedLabel = actionDialogState?.expectedLabel || "输入内容";
+  const ignoreCase = actionDialogState?.ignoreCase === true;
   if (!value) {
     elements.actionDialogError.textContent = `${expectedLabel}不能为空`;
     elements.actionDialogError.hidden = false;
     elements.actionDialogInput.focus();
     return;
   }
-  if (expectedValue !== null && value !== expectedValue) {
-    elements.actionDialogError.textContent = `${expectedLabel}不匹配，请按提示完整输入`;
-    elements.actionDialogError.hidden = false;
-    elements.actionDialogInput.focus();
-    return;
+  if (expectedValue !== null) {
+    const expected = String(expectedValue).trim();
+    const matched = ignoreCase
+      ? value.toLowerCase() === expected.toLowerCase()
+      : value === expected;
+    if (!matched) {
+      elements.actionDialogError.textContent = `${expectedLabel}不匹配，请按提示完整输入`;
+      elements.actionDialogError.hidden = false;
+      elements.actionDialogInput.focus();
+      return;
+    }
   }
   closeActionDialog(value);
 });
@@ -708,7 +722,8 @@ document.querySelector("#delete-line").addEventListener("click", async () => {
     confirmLabel: "删除产线",
     danger: true,
     expectedValue: line.deviceId,
-    expectedLabel: "deviceId"
+    expectedLabel: "deviceId",
+    ignoreCase: true
   });
   if (confirmation === null) return;
   const result = await runBusy("正在删除产线", () => window.reinloop.deleteProductionLine({
@@ -734,7 +749,8 @@ document.querySelector("#delete-company").addEventListener("click", async () =>
     confirmLabel: "删除公司",
     danger: true,
     expectedValue: company.code,
-    expectedLabel: "公司编码"
+    expectedLabel: "公司编码",
+    ignoreCase: true
   });
   if (confirmation === null) return;
   const result = await runBusy("正在删除公司", () => window.reinloop.deleteCompany({
@@ -797,12 +813,13 @@ elements.licenseList.addEventListener("click", async (event) => {
   if (deleteId) {
     const confirmation = await requestModelName({
       title: "确认删除许可证",
-      message: "已撤销许可证才能删除。请输入许可证 ID 以确认永久删除。",
+      message: `已撤销许可证才能删除。请输入许可证 ID 以确认永久删除。\n\n当前许可证 ID：${deleteId}`,
       value: "",
       confirmLabel: "永久删除",
       danger: true,
       expectedValue: deleteId,
-      expectedLabel: "许可证ID"
+      expectedLabel: "许可证ID",
+      ignoreCase: true
     });
     if (confirmation === null) return;
     button.disabled = true;
diff --git a/server/src/app.js b/server/src/app.js
index 8289722..289b463 100644
--- a/server/src/app.js
+++ b/server/src/app.js
@@ -371,6 +371,28 @@ function createApp({
     return before - database.fileRecords.length;
   }
 
+  async function removeDeviceDirectories(deviceId) {
+    const segments = String(deviceId || "").split("/");
+    if (segments.length !== 2 || !segments[0] || !segments[1]) return 0;
+    const [companyCode, lineCode] = segments;
+    const targets = [
+      path.join(store.modelsDirectory, companyCode, lineCode),
+      path.join(store.filesDirectory, "ReinLoop_GUI", companyCode, lineCode)
+    ];
+    let removed = 0;
+    for (const directory of targets) {
+      try {
+        const stat = await fs.promises.stat(directory);
+        if (!stat.isDirectory()) continue;
+      } catch (_error) {
+        continue;
+      }
+      await fs.promises.rm(directory, { recursive: true, force: true });
+      removed += 1;
+    }
+    return removed;
+  }
+
   function backfillIdentificationFiles(database) {
     for (const record of database.fileRecords) {
       if (!record.folder.endsWith("/ind_data") || ![".csv", ".json"].includes(path.extname(record.fileName).toLowerCase())) continue;
@@ -549,12 +571,14 @@ function createApp({
             !(item.companyId === companyId && item.productionLineId === productionLineId)
           );
 
+          const deletedDirectories = await removeDeviceDirectories(deviceId);
           database.productionLines = database.productionLines.filter((item) => item.id !== productionLineId);
 
           return {
             success: true,
             deletedProductionLineId: productionLineId,
             deletedFiles: deletedFileCount,
+            deletedDirectories,
             deletedLicenses: revokedLicenses,
             deletedFeedback,
             deletedVolumeRequests: deletedRequests,
diff --git a/server/test/server.test.js b/server/test/server.test.js
index 0a1dfdd..0ddc9c9 100644
--- a/server/test/server.test.js
+++ b/server/test/server.test.js
@@ -877,6 +877,14 @@ test("deleteProductionLine blocks active licenses and removes revoked data", asy
   assert.equal(blocked.errCode, "ACTIVE_LICENSES_PRESENT");
 
   await post({ type: "revokeLicense", licenseId, reason: "产线删除", adminToken: "test-token" });
+
+  const orphanModelDir = path.join(dataDirectory, "models", line.productionLine.deviceId);
+  const orphanFileDir = path.join(dataDirectory, "files", "ReinLoop_GUI", line.productionLine.deviceId);
+  await fs.promises.mkdir(orphanModelDir, { recursive: true });
+  await fs.promises.mkdir(orphanFileDir, { recursive: true });
+  await fs.promises.writeFile(path.join(orphanModelDir, "orphan.bin"), "orphan-model");
+  await fs.promises.writeFile(path.join(orphanFileDir, "orphan.json"), "orphan-file");
+
   const deleted = await post({
     type: "deleteProductionLine",
     companyId: company.company.id,
@@ -886,6 +894,10 @@ test("deleteProductionLine blocks active licenses and removes revoked data", asy
   assert.equal(deleted.success, true);
   assert.ok(deleted.deletedFiles >= 1);
   assert.ok(deleted.deletedLicenses >= 1);
+  assert.ok(deleted.deletedDirectories >= 1);
+
+  await assert.rejects(fs.promises.access(orphanModelDir));
+  await assert.rejects(fs.promises.access(orphanFileDir));
 
   const organizations = await post({ type: "listOrganizations", adminToken: "test-token" });
   const listedCompany = organizations.companies.find((item) => item.id === company.company.id);