diff --git a/src-tauri/src/commands/onboarding.rs b/src-tauri/src/commands/onboarding.rs
index 4a6704a..fb36662 100644
--- a/src-tauri/src/commands/onboarding.rs
+++ b/src-tauri/src/commands/onboarding.rs
@@ -379,7 +379,13 @@ fn check_project_context(
                 .get("schema_version")
                 .and_then(|value| value.as_u64());
             let project_id = context.get("project_id").and_then(|value| value.as_str());
-            if version != Some(PROJECT_CONTEXT_SCHEMA_VERSION) {
+            if project_id != Some(expected_project_id) {
+                VerifyCheck::with_state(
+                    "项目身份上下文",
+                    VerifyState::Unavailable,
+                    "`.lian-jing/context.json` 的 project_id 与炼境登记不一致——停止使用并重新 inject_mcp",
+                )
+            } else if version != Some(PROJECT_CONTEXT_SCHEMA_VERSION) {
                 VerifyCheck::with_state(
                     "项目身份上下文",
                     VerifyState::VersionMismatch,
@@ -388,18 +394,12 @@ fn check_project_context(
                         version, PROJECT_CONTEXT_SCHEMA_VERSION
                     ),
                 )
-            } else if project_id == Some(expected_project_id) {
+            } else {
                 VerifyCheck::with_state(
                     "项目身份上下文",
                     VerifyState::Ready,
                     "`.lian-jing/context.json` 与已登记 project_id 一致",
                 )
-            } else {
-                VerifyCheck::with_state(
-                    "项目身份上下文",
-                    VerifyState::Unavailable,
-                    "`.lian-jing/context.json` 的 project_id 与炼境登记不一致——停止使用并重新 inject_mcp",
-                )
             }
         }
         None if legacy
@@ -989,6 +989,14 @@ mod tests {
         );
         assert_eq!(mismatch.state, VerifyState::VersionMismatch);
 
+        let identity_mismatch = check_project_context(
+            Some(r#"{"schema_version":0,"project_id":"another-project"}"#),
+            None,
+            "p1",
+        );
+        assert_eq!(identity_mismatch.state, VerifyState::Unavailable);
+        assert!(identity_mismatch.detail.contains("停止使用"));
+
         let missing = check_project_context(None, None, "p1");
         assert_eq!(missing.state, VerifyState::Missing);