[MessengerBundle] Add auto-refresh and chart tooltip

[Copilot]

Optimizes the MessengerBundle UI with auto-refresh capability and improved chart interactivity.

Changes Made

Auto-Refresh Feature

• Added dropdown in toolbar with refresh intervals: 5s, 10s, 30s, or disabled
• Displays "Refreshed: YYYY-MM-DD HH:mm:ss" timestamp on the right side of the toolbar
• Timer cleanup on panel destroy

Chart Improvements

• Added tooltip on bar hover showing full queue name and message count
• Added bar highlighting on hover for better interactivity

Translations

• Added EN/DE translations for new UI elements (refresh intervals, messages label)

Testing

• ✅ Code review passed
• ✅ Security scan (CodeQL) passed

Original prompt

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This section details on the original issue you should resolve

<issue_title>[MessengerBundle] Feature Request: Optimize UI</issue_title>
<issue_description># Auto-Refresh Interval
It would be cool, if one could activate a auto-refresh feature on the messenger overview page. Similar to what's available in the RabbitMQ management UI.

Queue Names

Furthermore, if you have many queues (10+) some of the names are hidden in the bar chart. If we could rotate the text (45/90deg) it would create more space, so that all queue/transport names are visible.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [MessengerBundle] Feature Request: Optimize UI #2909

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[dpfaffenbauer]

@copilot this messes up the design and the chart is not seeable anymore, change it to trim the labels but also show them on hover on the bar

[Copilot]

Changed in f58485a. Labels longer than 15 characters are now trimmed with ellipsis, and hovering over a bar shows a tooltip with the full queue name and message count.

[dpfaffenbauer]

@copilot there is still an issue with queues that have 0 messages, I sometimes cannot see what queue it is

[Copilot]

Fixed in a40e747. For queues with 0 messages, the label above the bar now shows the truncated queue name followed by "(0)" (e.g., "async_priority_high (0)"). This makes it easy to identify which queue has 0 messages without needing to hover. Queues with messages still show just the count number as before.

[dpfaffenbauer]

@copilot now you completely messed it up :O

[Copilot]

Reverted to the original clean chart design in 1b15e2c. The chart now shows:

• Count labels inside bars (original design)
• Tooltip on bar hover showing full queue name + count
• Highlight effect on bar hover

The complex label modifications that broke the design have been removed.

[github-actions]

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[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud