fix(ui): add missing aria-labels and alt attributes for better accessibility

[NotxNoodles]

Description

Added missing aria-label attributes to icon-only buttons (theme toggle, transaction actions) and alt tags to decorative profile images. This improves accessibility (a11y) and screen-reader compatibility across the application.

Note: I am making this small contribution to familiarize myself with the Angular codebase and contribution workflow in preparation for my GSoC 2026 proposal for the MCP AI Assistant project!

Related issues and discussion

N/A - Spotted these missing attributes during a codebase review.

Screenshots, if any

N/A (These are underlying HTML attributes for screen readers, so there are no visual UI changes).

Checklist

Please make sure these boxes are checked before submitting your pull request - thanks!

• If you have multiple commits please combine them into one commit by squashing them.
• Read and understood the contribution guidelines at web-app/.github/CONTRIBUTING.md.

Summary by CodeRabbit

• Bug Fixes
  • Enhanced accessibility throughout the application with aria-labels on interactive elements like the theme toggle and transaction action buttons.
  • Improved image element accessibility with appropriate alt text and presentation attributes.
  • Added translation support for new accessibility labels across multiple components.

[coderabbitai]

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 532e934e-fa86-4ca0-9a74-3c5509e34cb9

📥 Commits

Reviewing files that changed from the base of the PR and between d5c35a6 and cebf558.

📒 Files selected for processing (4)

• src/app/groups/groups-view/groups-view.component.html
• src/app/savings/savings-account-view/transactions-tab/transactions-tab.component.html
• src/app/shared/theme-toggle/theme-toggle.component.html
• src/assets/translations/en-US.json

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Walkthrough

The pull request adds accessibility attributes across multiple UI components. Aria-labels with theme-state binding and translation keys are introduced to the theme-toggle and transaction actions button. A group image element receives accessibility attributes, and three new translation entries support these enhancements.

Changes

Cohort / File(s)	Summary
Accessibility Attributes in Components src/app/groups/groups-view/groups-view.component.html, src/app/savings/savings-account-view/transactions-tab/transactions-tab.component.html, src/app/shared/theme-toggle/theme-toggle.component.html	Added aria-label bindings with dynamic translation text and alt/role attributes. Theme toggle button aria-label switches between dark and light mode labels based on state.
Translation Entries src/assets/translations/en-US.json	Added three new translation keys: "Transaction Actions", "Switch to Dark Mode", and "Switch to Light Mode" to support aria-label bindings in components.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• IOhacker
• alberto-art3ch

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly summarizes the main change: adding aria-labels and alt attributes for accessibility improvements across multiple components.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

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• Post copyable unit tests in a comment

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[alberto-art3ch]

Please see my comment

[alberto-art3ch]

Please add the translation in the other languages

[IOhacker]

Pending Jira ticket and translation files