diff --git a/backend/src/api/routes/__tests__/test_reports_api.py b/backend/src/api/routes/__tests__/test_reports_api.py
index 90595b2..d40c905 100644
--- a/backend/src/api/routes/__tests__/test_reports_api.py
+++ b/backend/src/api/routes/__tests__/test_reports_api.py
@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_reports_api:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @SEMANTICS: tests, reports, api, contract, pagination, filtering
 # @PURPOSE: Contract tests for GET /api/reports defaults, pagination, and filtering behavior.
 # @LAYER: Domain (Tests)
diff --git a/backend/src/api/routes/__tests__/test_reports_detail_api.py b/backend/src/api/routes/__tests__/test_reports_detail_api.py
index 7e4d993..6ae9576 100644
--- a/backend/src/api/routes/__tests__/test_reports_detail_api.py
+++ b/backend/src/api/routes/__tests__/test_reports_detail_api.py
@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_reports_detail_api:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @SEMANTICS: tests, reports, api, detail, diagnostics
 # @PURPOSE: Contract tests for GET /api/reports/{report_id} detail endpoint behavior.
 # @LAYER: Domain (Tests)
diff --git a/backend/src/api/routes/__tests__/test_reports_openapi_conformance.py b/backend/src/api/routes/__tests__/test_reports_openapi_conformance.py
index 2c11ae7..07755bd 100644
--- a/backend/src/api/routes/__tests__/test_reports_openapi_conformance.py
+++ b/backend/src/api/routes/__tests__/test_reports_openapi_conformance.py
@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_reports_openapi_conformance:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @SEMANTICS: tests, reports, openapi, conformance
 # @PURPOSE: Validate implemented reports payload shape against OpenAPI-required top-level contract fields.
 # @LAYER: Domain (Tests)
diff --git a/backend/src/models/__tests__/test_report_models.py b/backend/src/models/__tests__/test_report_models.py
index 9605333..e3ce0e9 100644
--- a/backend/src/models/__tests__/test_report_models.py
+++ b/backend/src/models/__tests__/test_report_models.py
@@ -1,5 +1,5 @@
 # [DEF:test_report_models:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @PURPOSE: Unit tests for report Pydantic models and their validators
 # @LAYER: Domain
 # @RELATION: TESTS -> backend.src.models.report
diff --git a/backend/src/services/__tests__/test_encryption_manager.py b/backend/src/services/__tests__/test_encryption_manager.py
index 77bcc2a..6deb64f 100644
--- a/backend/src/services/__tests__/test_encryption_manager.py
+++ b/backend/src/services/__tests__/test_encryption_manager.py
@@ -1,5 +1,5 @@
 # [DEF:test_encryption_manager:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @SEMANTICS: encryption, security, fernet, api-keys, tests
 # @PURPOSE: Unit tests for EncryptionManager encrypt/decrypt functionality.
 # @LAYER: Domain
diff --git a/backend/src/services/reports/__tests__/test_report_normalizer.py b/backend/src/services/reports/__tests__/test_report_normalizer.py
index 98d3681..3a16801 100644
--- a/backend/src/services/reports/__tests__/test_report_normalizer.py
+++ b/backend/src/services/reports/__tests__/test_report_normalizer.py
@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_report_normalizer:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @SEMANTICS: tests, reports, normalizer, fallback
 # @PURPOSE: Validate unknown task type fallback and partial payload normalization behavior.
 # @LAYER: Domain (Tests)
diff --git a/backend/src/services/reports/__tests__/test_report_service.py b/backend/src/services/reports/__tests__/test_report_service.py
index 5d8b969..6663d4d 100644
--- a/backend/src/services/reports/__tests__/test_report_service.py
+++ b/backend/src/services/reports/__tests__/test_report_service.py
@@ -1,5 +1,5 @@
 # [DEF:test_report_service:Module]
-# @TIER: CRITICAL
+# @TIER: STANDARD
 # @PURPOSE: Unit tests for ReportsService list/detail operations
 # @LAYER: Domain
 # @RELATION: TESTS -> backend.src.services.reports.report_service.ReportsService
diff --git a/frontend/src/components/__tests__/task_log_viewer.test.js b/frontend/src/components/__tests__/task_log_viewer.test.js
index d28aa79..8096569 100644
--- a/frontend/src/components/__tests__/task_log_viewer.test.js
+++ b/frontend/src/components/__tests__/task_log_viewer.test.js
@@ -1,5 +1,5 @@
 // [DEF:frontend.src.components.__tests__.task_log_viewer:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: tests, task-log, viewer, mount, components
 // @PURPOSE: Unit tests for TaskLogViewer component by mounting it and observing the DOM.
 // @LAYER: UI (Tests)
diff --git a/frontend/src/lib/api/__tests__/reports_api.test.js b/frontend/src/lib/api/__tests__/reports_api.test.js
index 3be14a8..aebc2cb 100644
--- a/frontend/src/lib/api/__tests__/reports_api.test.js
+++ b/frontend/src/lib/api/__tests__/reports_api.test.js
@@ -1,5 +1,5 @@
 // [DEF:frontend.src.lib.api.__tests__.reports_api:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: tests, reports, api-client, query-string, error-normalization
 // @PURPOSE: Unit tests for reports API client functions: query string building, error normalization, and fetch wrappers.
 // @LAYER: Infra (Tests)
diff --git a/frontend/src/lib/components/assistant/__tests__/assistant_chat.integration.test.js b/frontend/src/lib/components/assistant/__tests__/assistant_chat.integration.test.js
index eae1f36..5156d2e 100644
--- a/frontend/src/lib/components/assistant/__tests__/assistant_chat.integration.test.js
+++ b/frontend/src/lib/components/assistant/__tests__/assistant_chat.integration.test.js
@@ -41,7 +41,7 @@ describe('AssistantChatPanel integration contract', () => {
     const source = fs.readFileSync(COMPONENT_PATH, 'utf-8');
 
     expect(source).toContain('<!-- [DEF' + ':AssistantChatPanel:Component] -->');
-    expect(source).toContain('@TIER: CRITICAL');
+    expect(source).toContain('@TIER: STANDARD');
     expect(source).toContain('@UX_STATE: LoadingHistory');
     expect(source).toContain('@UX_STATE: Sending');
     expect(source).toContain('@UX_STATE: Error');
diff --git a/frontend/src/lib/components/layout/__tests__/test_sidebar.svelte.js b/frontend/src/lib/components/layout/__tests__/test_sidebar.svelte.js
index af81fa4..81cfa45 100644
--- a/frontend/src/lib/components/layout/__tests__/test_sidebar.svelte.js
+++ b/frontend/src/lib/components/layout/__tests__/test_sidebar.svelte.js
@@ -1,5 +1,5 @@
 // [DEF:__tests__/test_sidebar:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @PURPOSE: Unit tests for Sidebar.svelte component
 // @LAYER: UI
 // @RELATION: VERIFIES -> frontend/src/lib/components/layout/Sidebar.svelte
diff --git a/frontend/src/lib/components/layout/__tests__/test_taskDrawer.svelte.js b/frontend/src/lib/components/layout/__tests__/test_taskDrawer.svelte.js
index e40ba99..7183bc1 100644
--- a/frontend/src/lib/components/layout/__tests__/test_taskDrawer.svelte.js
+++ b/frontend/src/lib/components/layout/__tests__/test_taskDrawer.svelte.js
@@ -1,5 +1,5 @@
 // [DEF:__tests__/test_taskDrawer:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @PURPOSE: Unit tests for TaskDrawer.svelte component
 // @LAYER: UI
 // @RELATION: VERIFIES -> frontend/src/lib/components/layout/TaskDrawer.svelte
diff --git a/frontend/src/lib/components/layout/__tests__/test_topNavbar.svelte.js b/frontend/src/lib/components/layout/__tests__/test_topNavbar.svelte.js
index d2920bc..31939bb 100644
--- a/frontend/src/lib/components/layout/__tests__/test_topNavbar.svelte.js
+++ b/frontend/src/lib/components/layout/__tests__/test_topNavbar.svelte.js
@@ -1,5 +1,5 @@
 // [DEF:__tests__/test_topNavbar:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @PURPOSE: Unit tests for TopNavbar.svelte component
 // @LAYER: UI
 // @RELATION: VERIFIES -> frontend/src/lib/components/layout/TopNavbar.svelte
diff --git a/frontend/src/lib/components/reports/__tests__/report_card.ux.test.js b/frontend/src/lib/components/reports/__tests__/report_card.ux.test.js
index 7273c5b..e79bd6f 100644
--- a/frontend/src/lib/components/reports/__tests__/report_card.ux.test.js
+++ b/frontend/src/lib/components/reports/__tests__/report_card.ux.test.js
@@ -2,7 +2,7 @@
  * @vitest-environment jsdom
  */
 // [DEF:frontend.src.lib.components.reports.__tests__.report_card.ux:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: reports, ux-tests, card, states, recovery
 // @PURPOSE: Test UX states and transitions for ReportCard component
 // @LAYER: UI
diff --git a/frontend/src/lib/components/reports/__tests__/report_detail.integration.test.js b/frontend/src/lib/components/reports/__tests__/report_detail.integration.test.js
index 5d2bdf0..9b65507 100644
--- a/frontend/src/lib/components/reports/__tests__/report_detail.integration.test.js
+++ b/frontend/src/lib/components/reports/__tests__/report_detail.integration.test.js
@@ -1,5 +1,5 @@
 // [DEF:frontend.src.lib.components.reports.__tests__.report_detail.integration:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: tests, reports, detail, recovery-guidance, integration
 // @PURPOSE: Validate detail-panel behavior for failed reports and recovery guidance visibility.
 // @LAYER: UI (Tests)
diff --git a/frontend/src/lib/components/reports/__tests__/report_detail.ux.test.js b/frontend/src/lib/components/reports/__tests__/report_detail.ux.test.js
index eafbdde..1489136 100644
--- a/frontend/src/lib/components/reports/__tests__/report_detail.ux.test.js
+++ b/frontend/src/lib/components/reports/__tests__/report_detail.ux.test.js
@@ -2,7 +2,7 @@
  * @vitest-environment jsdom
  */
 // [DEF:frontend.src.lib.components.reports.__tests__.report_detail.ux:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: reports, ux-tests, detail, diagnostics, recovery
 // @PURPOSE: Test UX states and recovery for ReportDetailPanel component
 // @LAYER: UI
diff --git a/frontend/src/lib/components/reports/__tests__/report_type_profiles.test.js b/frontend/src/lib/components/reports/__tests__/report_type_profiles.test.js
index d239e77..390d7a0 100644
--- a/frontend/src/lib/components/reports/__tests__/report_type_profiles.test.js
+++ b/frontend/src/lib/components/reports/__tests__/report_type_profiles.test.js
@@ -1,5 +1,5 @@
 // [DEF:frontend.src.lib.components.reports.__tests__.report_type_profiles:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: tests, reports, type-profiles, fallback
 // @PURPOSE: Validate report type profile mapping and unknown fallback behavior.
 // @LAYER: UI (Tests)
diff --git a/frontend/src/lib/components/reports/__tests__/reports_page.integration.test.js b/frontend/src/lib/components/reports/__tests__/reports_page.integration.test.js
index 02601b1..cb65eba 100644
--- a/frontend/src/lib/components/reports/__tests__/reports_page.integration.test.js
+++ b/frontend/src/lib/components/reports/__tests__/reports_page.integration.test.js
@@ -1,5 +1,5 @@
 // [DEF:frontend.src.lib.components.reports.__tests__.reports_page.integration:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: tests, reports, integration, mixed-types, rendering
 // @PURPOSE: Integration-style checks for unified mixed-type reports rendering expectations.
 // @LAYER: UI (Tests)
diff --git a/frontend/src/lib/stores/__tests__/test_taskDrawer.js b/frontend/src/lib/stores/__tests__/test_taskDrawer.js
index 7fd1186..3ac8092 100644
--- a/frontend/src/lib/stores/__tests__/test_taskDrawer.js
+++ b/frontend/src/lib/stores/__tests__/test_taskDrawer.js
@@ -1,5 +1,5 @@
 // [DEF:frontend.src.lib.stores.__tests__.test_taskDrawer:Module]
-// @TIER: CRITICAL
+// @TIER: STANDARD
 // @SEMANTICS: task-drawer, store, mapping, tests
 // @PURPOSE: Unit tests for task drawer store
 // @LAYER: UI