Allow configuring Announcement banner by admin

[sudo87]

Description

This PR enables Admin to configure UI Announcement banner containing message through config.json. HTML based message is supported apart from regular text

It can be configured by defining following section in config.json:

"announcementBanner": {
    "enabled": true,
    "showIcon": true,
    "closable": true,
    "persistDismissal": true,
    "type": "warning",
    "message": "<strong>Performance Notice:</strong> We're experiencing high load. Some operations may be slower than usual.",
    "startDate": "2025-06-01T00:00:00Z",
    "endDate": "2025-07-16T00:00:00Z"
}

Following types are supported:

1. info
2. warning
3. error

To ensure banner is shown only once, enable the following config:

persistDismissal: true

Doc PR: https://github.com/apache/cloudstack-documentation/pull/517

Types of changes

• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Enhancement (improves an existing feature and functionality)
• [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
• [ ] build/CI
• [ ] test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• [ ] Major
• [ ] Minor

Bug Severity

• [ ] BLOCKER
• [ ] Critical
• [ ] Major
• [x] Minor
• [ ] Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

New npm dep (dompurify) is included to sanitize the html.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 16.57%. Comparing base (2d669db) to head (106757e). :warning: Report is 225 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #10951      +/-   ##
============================================
- Coverage     16.60%   16.57%   -0.04%     
- Complexity    13924    13969      +45     
============================================
  Files          5730     5744      +14     
  Lines        508082   510698    +2616     
  Branches      61770    62118     +348     
============================================
+ Hits          84388    84647     +259     
- Misses       414259   416580    +2321     
- Partials       9435     9471      +36     

Flag	Coverage Δ
uitests	3.90% <ø> (-0.04%)	:arrow_down:
unittests	17.47% <ø> (-0.03%)	:arrow_down:

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[sudo87]

@blueorangutan ui

[blueorangutan]

@sudo87 a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: :heavy_check_mark: Live QA URL: https://qa.cloudstack.cloud/simulator/pr/10951 (QA-JID-637)

[sudo87]

@blueorangutan package

[blueorangutan]

@sudo87 a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13635

[sudo87]

@blueorangutan package

[blueorangutan]

@sudo87 a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13670

[shwstppr]

@blueorangutan ui

[blueorangutan]

@shwstppr a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: :heavy_check_mark: Live QA URL: https://qa.cloudstack.cloud/simulator/pr/10951 (QA-JID-643)

[vishesh92]

@sudo87 Found an issue. When the banner is not closed,

1. Open a list view (e.g. projects) or details page (e.g. Public IP Address)
2. On scrolling down, there is a gray area on top.

[github-actions[bot]]

This pull request has merge conflicts. Dear author, please fix the conflicts and sync your branch with the base branch.

[vishesh92]

@blueorangutan package

[blueorangutan]

@vishesh92 a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✖️ el8 ✖️ el9 ✔️ debian ✖️ suse15. SL-JID 13744

[vishesh92]

@blueorangutan package @blueorangutan ui

[blueorangutan]

@vishesh92 a [SL] Jenkins job has been kicked to build packages. It will be bundled with@blueorangutan ui SystemVM template(s). I'll keep you posted as I make progress.

[blueorangutan]

@vishesh92 a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: :heavy_check_mark: Live QA URL: https://qa.cloudstack.cloud/simulator/pr/10951 (QA-JID-646)

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13748

[vladimirpetrov]

@blueorangutan package

[blueorangutan]

@vladimirpetrov a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13936

[sudo87]

@blueorangutan package

[blueorangutan]

@sudo87 a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 14003

[rohityadavcloud]

LGTM, thanks.