feat: add E2E coverage flags for overlay cross-repo uploads (#2997)

* feat: add E2E coverage flags for overlay cross-repo uploads

Add 6 e2e-* flags to codecov.yml for workspaces that have E2E tests
in rhdh-plugin-export-overlays. These flags receive Istanbul coverage
from instrumented dynamic plugin builds running on real RHDH/K8s
deployments.

Flags: e2e-adoption-insights, e2e-global-header, e2e-homepage,
e2e-quickstart, e2e-scorecard, e2e-theme

They inherit carryforward and status rules from default_rules.
Coverage is uploaded with --slug and --sha from source.json,
attributing it to the correct commit in this repo.

Ref: RHIDP-13411

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* refactor(coverage): sort E2E flags alphabetically and condense comment

Move e2e-* flags to their correct alphabetical position in
individual_flags (between dcm and extensions) instead of appending
at the end, maintaining consistent ordering. Condense the 3-line
comment block to a single line with Jira reference.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: gustavolira

codecov.yml

@@ -90,6 +90,25 @@ flag_management:
     - name: dcm
       paths:
         - workspaces/dcm/
+    # E2E coverage flags — cross-repo uploads from overlay E2E pipeline (RHIDP-13411)
+    - name: e2e-adoption-insights
+      paths:
+        - workspaces/adoption-insights/
+    - name: e2e-global-header
+      paths:
+        - workspaces/global-header/
+    - name: e2e-homepage
+      paths:
+        - workspaces/homepage/
+    - name: e2e-quickstart
+      paths:
+        - workspaces/quickstart/
+    - name: e2e-scorecard
+      paths:
+        - workspaces/scorecard/
+    - name: e2e-theme
+      paths:
+        - workspaces/theme/
     - name: extensions
       paths:
         - workspaces/extensions/