diff --git a/docs/agent-deploy-cloudflare.md b/docs/agent-deploy-cloudflare.md
index deb1d9a2..4c262038 100644
--- a/docs/agent-deploy-cloudflare.md
+++ b/docs/agent-deploy-cloudflare.md
@@ -36,7 +36,7 @@ This document defines the standard operating specifications and conventions for
      Deploy command: bun run deploy:cloudflare-builds
      ```
 
-   - The deploy command automatically resolves the D1 UUID from the `edgeever` database name and writes it only to a temporary generated Wrangler configuration. Users do not need to edit `wrangler.toml` or copy a D1 ID into a build variable.
+   - The deploy command automatically resolves the D1 UUID from the `edgeever` database name and writes it only to a temporary generated Wrangler configuration. The tracked `wrangler.toml` must keep its all-zero `database_id` placeholder; deployment rejects an instance-specific ID committed there so a Fork cannot diverge on local infrastructure configuration.
    - Ensure the Workers Builds API token can read and edit D1. An advanced deployment that uses a differently named database must set the build variable `EDGE_EVER_D1_DATABASE_ID` explicitly.
 
 6. **Start Initial Build & Verify Service**
diff --git a/docs/agent-deploy-cloudflare.zh-CN.md b/docs/agent-deploy-cloudflare.zh-CN.md
index 534d9c31..0e489adf 100644
--- a/docs/agent-deploy-cloudflare.zh-CN.md
+++ b/docs/agent-deploy-cloudflare.zh-CN.md
@@ -36,7 +36,7 @@
      Deploy command: bun run deploy:cloudflare-builds
      ```
 
-   - 部署命令会根据 `edgeever` 数据库名称自动查询 D1 UUID，并且只写入临时生成的 Wrangler 配置。用户无需修改 `wrangler.toml`，也无需手工把 D1 ID 复制到构建变量。
+   - 部署命令会根据 `edgeever` 数据库名称自动查询 D1 UUID，并且只写入临时生成的 Wrangler 配置。受版本控制的 `wrangler.toml` 必须保留全零 `database_id` 占位符；若把实例专属 ID 提交到该文件，部署会直接拒绝，避免 Fork 因本地基础设施配置产生分叉。
    - 请确保 Workers Builds API Token 具有 D1 读取和编辑权限。使用其他数据库名称的高级部署需要显式设置构建变量 `EDGE_EVER_D1_DATABASE_ID`。
 
 6. **启动首次构建与服务验证**
diff --git a/docs/deploy-cloudflare-button.md b/docs/deploy-cloudflare-button.md
index afb77e1e..4ce1dab2 100644
--- a/docs/deploy-cloudflare-button.md
+++ b/docs/deploy-cloudflare-button.md
@@ -69,7 +69,7 @@ Deploy command: bun run deploy:cloudflare-builds
 
 Click **Save and Deploy** to trigger the initial build.
 
-The deploy command automatically looks up the D1 UUID by the `edgeever` database name. Do not edit `wrangler.toml` or manually copy the D1 ID. The Workers Builds API token must have D1 read/edit permission.
+The deploy command automatically looks up the D1 UUID by the `edgeever` database name. Keep the tracked `wrangler.toml` on its all-zero `database_id` placeholder; deployment rejects an instance-specific ID committed there. The Workers Builds API token must have D1 read/edit permission.
 
 After publishing, the CI deployment records the actual public target reported by Wrangler and requests its `/api/health` endpoint. The build fails if the live Worker is missing its `DB` binding, uses an unprepared D1 database, or does not return a healthy response.
 
diff --git a/docs/deploy-cloudflare-button.zh-CN.md b/docs/deploy-cloudflare-button.zh-CN.md
index 33cd8ba9..e0d5ead3 100644
--- a/docs/deploy-cloudflare-button.zh-CN.md
+++ b/docs/deploy-cloudflare-button.zh-CN.md
@@ -69,7 +69,7 @@ Deploy command: bun run deploy:cloudflare-builds
 
 点击 **Save and Deploy** 启动首次构建部署。
 
-部署命令会根据 `edgeever` 数据库名称自动查询 D1 UUID。无需修改 `wrangler.toml`，也无需手工复制 D1 ID。Workers Builds API Token 必须具有 D1 读取和编辑权限。
+部署命令会根据 `edgeever` 数据库名称自动查询 D1 UUID。受版本控制的 `wrangler.toml` 必须保留全零 `database_id` 占位符；若把实例专属 ID 提交到该文件，部署会直接拒绝。Workers Builds API Token 必须具有 D1 读取和编辑权限。
 
 发布完成后，CI 部署会记录 Wrangler 返回的实际公网入口，并请求该入口的 `/api/health`。如果线上 Worker 缺少 `DB` binding、绑定了未初始化的 D1，或没有返回健康状态，构建会直接失败。
 
diff --git a/scripts/run-wrangler.mjs b/scripts/run-wrangler.mjs
index f73b5a60..186c68a2 100644
--- a/scripts/run-wrangler.mjs
+++ b/scripts/run-wrangler.mjs
@@ -4,6 +4,7 @@ import {
   readFileSync,
   readdirSync,
   rmSync,
+  writeSync,
   writeFileSync,
 } from "node:fs";
 import { dirname, resolve } from "node:path";
@@ -13,12 +14,13 @@ import {
   findD1DatabaseIdByName,
   normalizeD1MigrationSql,
   parseWranglerDeploymentUrls,
+  PLACEHOLDER_D1_ID,
+  repositoryD1ConfigError,
   runWranglerSync,
   shouldCaptureDeploymentTargets,
 } from "./wrangler-runner.mjs";
 import { writeWranglerNotice } from "./wrangler-output.mjs";
 
-const PLACEHOLDER_D1_ID = "00000000-0000-0000-0000-000000000000";
 const UUID_PATTERN =
   /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
 
@@ -72,7 +74,9 @@ if (requestedInstance !== undefined) {
   process.env.EDGE_EVER_INSTANCE = requestedInstance;
 }
 
-const baseConfigPath = resolve(process.env.WRANGLER_CONFIG ?? "wrangler.toml");
+const repositoryConfigPath = resolve("wrangler.toml");
+const baseConfigPath = resolve(process.env.WRANGLER_CONFIG ?? repositoryConfigPath);
+const usesRepositoryConfig = baseConfigPath === repositoryConfigPath;
 const baseConfigDirectory = dirname(baseConfigPath);
 const instance = process.env.EDGE_EVER_INSTANCE?.trim();
 const instanceKey = instance?.replace(/[^a-zA-Z0-9]/g, "_").toUpperCase();
@@ -90,6 +94,12 @@ const generatedLocalDevEnvPath = resolve(".env.wrangler.generated.local");
 let config = readFileSync(baseConfigPath, "utf8");
 let changed = false;
 
+const d1ConfigError = repositoryD1ConfigError(config, usesRepositoryConfig);
+if (d1ConfigError) {
+  writeSync(2, `${d1ConfigError}\n`);
+  process.exit(1);
+}
+
 const migrationCommand =
   wranglerArgs[0] === "d1"
   && wranglerArgs[1] === "migrations"
@@ -306,7 +316,7 @@ if (isRemoteCommand && config.includes(`database_id = "${PLACEHOLDER_D1_ID}"`))
       instanceKey
         ? `Set EDGE_EVER_${instanceKey}_D1_DATABASE_ID or EDGE_EVER_D1_DATABASE_ID,`
         : "Set EDGE_EVER_D1_DATABASE_ID,",
-      "or replace the database_id placeholder in wrangler.toml / WRANGLER_CONFIG.",
+      "or point WRANGLER_CONFIG at an external configuration file with the required binding.",
     ].join(" "),
   );
   process.exit(1);
diff --git a/scripts/wrangler-runner.mjs b/scripts/wrangler-runner.mjs
index 6d3b4b06..c5d747f1 100644
--- a/scripts/wrangler-runner.mjs
+++ b/scripts/wrangler-runner.mjs
@@ -2,6 +2,22 @@ import { spawnSync } from "node:child_process";
 import { existsSync, readFileSync } from "node:fs";
 import { resolve } from "node:path";
 
+export const PLACEHOLDER_D1_ID = "00000000-0000-0000-0000-000000000000";
+
+export const repositoryD1ConfigError = (config, usesRepositoryConfig) => {
+  if (!usesRepositoryConfig) return undefined;
+
+  const configuredId = config.match(/^database_id\s*=\s*"([^"]+)"/m)?.[1];
+  if (configuredId === PLACEHOLDER_D1_ID) return undefined;
+
+  return [
+    "Refusing to use an instance-specific D1 database id from the repository wrangler.toml.",
+    `Restore database_id to "${PLACEHOLDER_D1_ID}".`,
+    "Provide the real id through EDGE_EVER_D1_DATABASE_ID, let deployment resolve it by database name,",
+    "or point WRANGLER_CONFIG at an external configuration file.",
+  ].join(" ");
+};
+
 export const resolveWranglerCliPath = (cwd = resolve(".")) =>
   resolve(cwd, "node_modules", "wrangler", "bin", "wrangler.js");
 
diff --git a/tests/deployment-entrypoints.test.ts b/tests/deployment-entrypoints.test.ts
index b3aeeae8..e0e0af34 100644
--- a/tests/deployment-entrypoints.test.ts
+++ b/tests/deployment-entrypoints.test.ts
@@ -15,6 +15,7 @@ import {
   manualDeploymentCopy,
 } from "../apps/site/src/deployment-prompts";
 import { decideUpstreamSync } from "../scripts/upstream-sync-plan.mjs";
+import { repositoryD1ConfigError } from "../scripts/wrangler-runner.mjs";
 
 const repositoryRoot = resolve(import.meta.dir, "..");
 const normalizeLineEndings = (value: string) => value.replace(/\r\n/g, "\n");
@@ -123,15 +124,43 @@ describe("Cloudflare deployment entrypoints", () => {
 
   test("online deployment resolves the D1 id without editing the repository config", () => {
     const runner = readRepositoryFile("scripts/run-wrangler.mjs");
+    const wranglerConfig = readRepositoryFile("wrangler.toml");
     const englishAgentDoc = readRepositoryFile("docs/agent-deploy-cloudflare.md");
     const chineseAgentDoc = readRepositoryFile("docs/agent-deploy-cloudflare.zh-CN.md");
 
+    expect(wranglerConfig).toContain(
+      'database_id = "00000000-0000-0000-0000-000000000000"',
+    );
     expect(runner).toContain('"d1", "list", "--json"');
     expect(runner).toContain("findD1DatabaseIdByName");
+    expect(runner).toContain("repositoryD1ConfigError(config, usesRepositoryConfig)");
+    expect(runner).not.toContain("replace the database_id placeholder");
     expect(englishAgentDoc).toContain("automatically resolves the D1 UUID");
     expect(chineseAgentDoc).toContain("自动查询 D1 UUID");
   });
 
+  test("rejects an instance-specific D1 id in the repository Wrangler config", () => {
+    const instanceConfig = [
+      'name = "edgeever"',
+      'database_name = "edgeever"',
+      'database_id = "11111111-1111-1111-1111-111111111111"',
+      "",
+    ].join("\n");
+    const placeholderConfig = instanceConfig.replace(
+      "11111111-1111-1111-1111-111111111111",
+      "00000000-0000-0000-0000-000000000000",
+    );
+
+    const error = repositoryD1ConfigError(instanceConfig, true);
+    expect(error).toContain(
+      "Refusing to use an instance-specific D1 database id from the repository wrangler.toml",
+    );
+    expect(error).toContain("EDGE_EVER_D1_DATABASE_ID");
+    expect(error).toContain("WRANGLER_CONFIG");
+    expect(repositoryD1ConfigError(placeholderConfig, true)).toBeUndefined();
+    expect(repositoryD1ConfigError(instanceConfig, false)).toBeUndefined();
+  });
+
   test("keeps D1 resolver diagnostics out of Wrangler JSON stdout", () => {
     const workingDirectory = mkdtempSync(resolve(tmpdir(), "edgeever-wrangler-output-"));
     const wranglerBinDirectory = resolve(
@@ -149,13 +178,13 @@ describe("Cloudflare deployment entrypoints", () => {
     const environment = {
       ...inheritedEnvironment,
       EDGE_EVER_INSTANCE: "",
-      WRANGLER_CONFIG: resolve(workingDirectory, "wrangler.toml"),
+      WRANGLER_CONFIG: resolve(workingDirectory, "wrangler.external.toml"),
     };
 
     try {
       mkdirSync(wranglerBinDirectory, { recursive: true });
       writeFileSync(
-        resolve(workingDirectory, "wrangler.toml"),
+        resolve(workingDirectory, "wrangler.external.toml"),
         [
           'name = "edgeever"',
           'database_name = "edgeever"',
@@ -255,7 +284,7 @@ describe("Cloudflare deployment entrypoints", () => {
     try {
       mkdirSync(wranglerBinDirectory, { recursive: true });
       writeFileSync(
-        resolve(workingDirectory, "wrangler.toml"),
+        resolve(workingDirectory, "wrangler.external.toml"),
         [
           'name = "edgeever"',
           "workers_dev = true",
@@ -288,7 +317,7 @@ describe("Cloudflare deployment entrypoints", () => {
             CI: "true",
             EDGE_EVER_AUTH_PASSWORD: "test-password",
             EDGE_EVER_INSTANCE: "",
-            WRANGLER_CONFIG: resolve(workingDirectory, "wrangler.toml"),
+            WRANGLER_CONFIG: resolve(workingDirectory, "wrangler.external.toml"),
           },
         },
       );