diff --git a/.opencode/agents/instruction.md b/.opencode/agents/instruction.md
index a715de8..16a53f7 100644
--- a/.opencode/agents/instruction.md
+++ b/.opencode/agents/instruction.md
@@ -32,8 +32,8 @@ Agent 负责：
 1. `render_scada_analysis` 只能在分析结论已经完成后调用，不得让前端计算、猜测或修改高中低等级。
 2. 每次普通工具调用必须填写具体 `reason`。
 3. 不生成 JS、JSX、HTML、CSS 或可执行前端代码。
-4. SCADA 地图结果只允许使用可信 `sensor_id` 和 `high | medium | low | unrated` 等级，不得传入自定义标签、颜色或 HTML。
-5. 同一批结果不得包含重复 `sensor_id`，每次最多 100 个点位。
+4. SCADA 地图结果只允许使用后端 API 返回的可信 `device_id` 和 `high | medium | low | unrated` 等级，不得传入自定义标签、颜色或 HTML。
+5. 同一批结果不得包含重复 `device_id`，每次最多 100 个点位。
 6. 只有 SCADA 地图工具返回浏览器的成功结果后，才能声称已渲染或已清除；工具报错、超时或无活跃浏览器连接时，必须明确告知用户动作失败，不得伪造已渲染的点位、编号或等级。
 
 ## 执行约束
diff --git a/.opencode/tools/render_scada_analysis.ts b/.opencode/tools/render_scada_analysis.ts
index 6165040..d77a8dd 100644
--- a/.opencode/tools/render_scada_analysis.ts
+++ b/.opencode/tools/render_scada_analysis.ts
@@ -2,7 +2,7 @@ import { tool } from "@opencode-ai/plugin";
 
 import { executeFrontendAction } from "./frontend_action.js";
 
-const sensorId = tool.schema.string().trim().min(1).max(128);
+const deviceId = tool.schema.string().trim().min(1).max(128);
 
 export default tool({
   description:
@@ -16,7 +16,7 @@ export default tool({
     items: tool.schema
       .array(
         tool.schema.object({
-          sensor_id: sensorId.describe("Trusted SCADA sensor identifier."),
+          device_id: deviceId.describe("Trusted SCADA device identifier from the backend API."),
           level: tool.schema
             .enum(["high", "medium", "low", "unrated"])
             .describe("Completed analysis level; use unrated only when no level was concluded."),
@@ -25,8 +25,8 @@ export default tool({
       .min(1)
       .max(100)
       .refine(
-        (items) => new Set(items.map((item) => item.sensor_id)).size === items.length,
-        "sensor_id values must be unique",
+        (items) => new Set(items.map((item) => item.device_id)).size === items.length,
+        "device_id values must be unique",
       )
       .describe("One to one hundred unique SCADA analysis results."),
   },
diff --git a/src/frontendAction/registry.ts b/src/frontendAction/registry.ts
index 535e689..0c7cb64 100644
--- a/src/frontendAction/registry.ts
+++ b/src/frontendAction/registry.ts
@@ -2,7 +2,7 @@ import { z } from "zod";
 import type { FrontendActionManifest } from "./types.js";
 
 type Definition = { manifest: FrontendActionManifest; inputSchema: z.ZodTypeAny; outputSchema: z.ZodTypeAny };
-const sensorId = z.string().trim().min(1).max(128);
+const deviceId = z.string().trim().min(1).max(128);
 const scadaLevel = z.enum(["high", "medium", "low", "unrated"]);
 const levelCounts = z.object({
   high: z.number().int().nonnegative(),
@@ -11,18 +11,18 @@ const levelCounts = z.object({
   unrated: z.number().int().nonnegative(),
 }).strict();
 const renderScadaAnalysisInput = z.object({
-  items: z.array(z.object({ sensor_id: sensorId, level: scadaLevel }).strict()).min(1).max(100),
+  items: z.array(z.object({ device_id: deviceId, level: scadaLevel }).strict()).min(1).max(100),
 }).strict().superRefine((value, context) => {
   const seen = new Set<string>();
   value.items.forEach((item, index) => {
-    if (seen.has(item.sensor_id)) {
+    if (seen.has(item.device_id)) {
       context.addIssue({
         code: z.ZodIssueCode.custom,
-        message: "sensor_id values must be unique",
-        path: ["items", index, "sensor_id"],
+        message: "device_id values must be unique",
+        path: ["items", index, "device_id"],
       });
     }
-    seen.add(item.sensor_id);
+    seen.add(item.device_id);
   });
 });
 const definitions: Definition[] = [
@@ -36,8 +36,8 @@ const definitions: Definition[] = [
     },
     inputSchema: renderScadaAnalysisInput,
     outputSchema: z.object({
-      rendered_ids: z.array(sensorId),
-      missing_ids: z.array(sensorId),
+      rendered_ids: z.array(deviceId),
+      missing_ids: z.array(deviceId),
       level_counts: levelCounts,
       fitted: z.literal(true),
     }).strict(),
diff --git a/tests/frontendAction/coordinator.test.ts b/tests/frontendAction/coordinator.test.ts
index cb61808..81527fa 100644
--- a/tests/frontendAction/coordinator.test.ts
+++ b/tests/frontendAction/coordinator.test.ts
@@ -8,8 +8,8 @@ import { frontendActionRegistry } from "../../src/frontendAction/registry.js";
 import type { FrontendActionRequest } from "../../src/frontendAction/types.js";
 
 const items = [
-  { sensor_id: "MP01", level: "high" },
-  { sensor_id: "MP02", level: "medium" },
+  { device_id: "MP01", level: "high" },
+  { device_id: "MP02", level: "medium" },
 ] as const;
 
 const start = (
@@ -119,10 +119,10 @@ describe("FrontendActionCoordinator", () => {
       params: value,
     });
     expect(() => request({ items: [] })).toThrow(FrontendActionError);
-    expect(() => request({ items: Array.from({ length: 101 }, (_, index) => ({ sensor_id: `MP${index}`, level: "low" })) })).toThrow("invalid frontend action params");
-    expect(() => request({ items: [{ sensor_id: "MP01", level: "high" }, { sensor_id: "MP01", level: "low" }] })).toThrow("invalid frontend action params");
-    expect(() => request({ items: [{ sensor_id: "x".repeat(129), level: "low" }] })).toThrow("invalid frontend action params");
-    expect(() => request({ items: [{ sensor_id: "MP01", level: "critical" }] })).toThrow("invalid frontend action params");
+    expect(() => request({ items: Array.from({ length: 101 }, (_, index) => ({ device_id: `MP${index}`, level: "low" })) })).toThrow("invalid frontend action params");
+    expect(() => request({ items: [{ device_id: "MP01", level: "high" }, { device_id: "MP01", level: "low" }] })).toThrow("invalid frontend action params");
+    expect(() => request({ items: [{ device_id: "x".repeat(129), level: "low" }] })).toThrow("invalid frontend action params");
+    expect(() => request({ items: [{ device_id: "MP01", level: "critical" }] })).toThrow("invalid frontend action params");
   });
 
   it("keeps terminal results idempotent and rejects conflicts", async () => {
diff --git a/tests/routes/chatUiState.test.ts b/tests/routes/chatUiState.test.ts
index c774033..47923d1 100644
--- a/tests/routes/chatUiState.test.ts
+++ b/tests/routes/chatUiState.test.ts
@@ -12,7 +12,7 @@ describe("appendBackendToolArtifact", () => {
     const artifacts = appendBackendToolArtifact([], {
       tool: "render_scada_analysis",
       reason: "显示已完成的分级结论",
-      params: { items: [{ sensor_id: "MP01", level: "high" }] },
+      params: { items: [{ device_id: "MP01", level: "high" }] },
     }) as Array<Record<string, unknown>>;
 
     expect(artifacts[0]).toMatchObject({
diff --git a/tests/uiEnvelope/fromToolCall.test.ts b/tests/uiEnvelope/fromToolCall.test.ts
index e1739d7..20682c8 100644
--- a/tests/uiEnvelope/fromToolCall.test.ts
+++ b/tests/uiEnvelope/fromToolCall.test.ts
@@ -12,7 +12,7 @@ describe("toUiEnvelopeFromToolCall", () => {
   it("does not generate duplicate UIEnvelopes for SCADA frontend actions", () => {
     expect(toUiEnvelopeFromToolCall({
       tool: "render_scada_analysis",
-      params: { items: [{ sensor_id: "MP01", level: "high" }] },
+      params: { items: [{ device_id: "MP01", level: "high" }] },
     })).toBeNull();
     expect(toUiEnvelopeFromToolCall({
       tool: "clear_scada_analysis",