diff --git a/robot/e2e/tdd_acms_behavioral_validation.robot b/robot/e2e/tdd_acms_behavioral_validation.robot
index 22cef983a..97368b0b6 100644
--- a/robot/e2e/tdd_acms_behavioral_validation.robot
+++ b/robot/e2e/tdd_acms_behavioral_validation.robot
@@ -91,7 +91,7 @@ Context Simulate Returns Non-Empty Tier Data
     ...                is not wired into the CLI — ``ContextTierService`` starts
     ...                empty on every invocation.
     ...
-    [Tags]    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
+    [Tags]    tdd_expected_fail    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
     [Setup]    Variable Should Exist    ${SUITE_SETUP_COMPLETE}
     ...    msg=Prerequisite not met: suite setup did not complete
     # Create project and configure context policy
@@ -123,7 +123,7 @@ Context Inspect Shows Indexed Resources
     ...                all zero because no indexing occurs — the ACMS pipeline
     ...                is disconnected from the CLI.
     ...
-    [Tags]    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
+    [Tags]    tdd_expected_fail    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
     [Setup]    Variable Should Exist    ${SUITE_SETUP_COMPLETE}
     ...    msg=Prerequisite not met: suite setup did not complete
     # Create project and configure context policy
@@ -156,7 +156,7 @@ Budget Enforcement Excludes Oversized Files
     ...                the indexing pipeline does not run at all — regardless of
     ...                ``max_file_size`` configuration, no files are scanned.
     ...
-    [Tags]    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
+    [Tags]    tdd_expected_fail    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
     [Setup]    Variable Should Exist    ${SUITE_SETUP_COMPLETE}
     ...    msg=Prerequisite not met: suite setup did not complete
     # Create project with tight max_file_size (1024 bytes)
@@ -194,7 +194,7 @@ Large Project Indexes Without Timeout
     ...                but returns zero fragments because the indexing pipeline
     ...                is not wired — the 10K files are never scanned.
     ...
-    [Tags]    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
+    [Tags]    tdd_expected_fail    tdd_bug    tdd_bug_1028    tdd_issue    tdd_issue_1028    E2E
     [Setup]    Variable Should Exist    ${SUITE_SETUP_COMPLETE}
     ...    msg=Prerequisite not met: suite setup did not complete
     # Generate 10,000 tiny .py files in a subdirectory