Add parameter level help tooltips for audio effect blocks

[sankalppanchabhai123]

Description

Fixes #5066 - Adds beginner-friendly parameter explanations to the Tremolo block tooltip. The Tremolo block previously showed parameters "rate" and "depth" without any explanation of what they control, making it difficult for beginners to understand how to adjust the sound.

Changes Made

• Updated Tremolo Block Help Text (ToneBlocks.js)
• Enhanced the existing setHelpString() call for TremoloBlock to include parameter explanations
• Added simple, beginner-friendly descriptions for both "rate" and "depth" parameters
• Maintained compatibility with existing help system infrastructure

Before

this.setHelpString([ _("The Tremolo block adds a wavering effect."), "documentation", null, "tremolohelp" ]);

After:

this.setHelpString([ _("The Tremolo block adds a wavering effect. ") + _("Rate controls how fast the volume pulses. ") + _("Depth controls how strong the pulsing is."), "documentation", null, "tremolohelp" ]);

2. Updated Test Expectations (ToneBlocks.test.js)
   Updated test expectations to match the new help text
   Ensured all existing tests continue to pass

Why This Approach?

• Minimal Changes: Uses the existing setHelpString() system without requiring new UI infrastructure
• Beginner-Friendly: Provides clear explanations using simple language
• Consistent: Follows existing patterns in the codebase
• No Breaking Changes: All existing functionality remains unchanged

Scope

• ✅ No audio behavior changes - Sound generation remains identical
• ✅ No layout or styling changes - UI remains exactly the same
• ✅ No new systems introduced - Uses existing help/tooltip infrastructure
• ✅ No parameter-level tooltip infrastructure - Works within current constraints

Testing Performed

Manual Testing:

• Opened Music Blocks
• Navigated to the Tone palette
• Added a Tremolo block to workspace
• Hovered over the Tremolo block
• Verified the updated tooltip appears with parameter explanations
• Confirmed audio functionality remains unchanged
• Automated Testing:
• All existing tests pass with updated help text expectations
• No new tests required as functionality remains the same

Impact

• Educational Value: Students now understand what "rate" and "depth" mean when adjusting tremolo
• Usability: Reduces confusion and trial-and-error for beginners
• Accessibility: Makes music technology more approachable without technical jargon
• Future Considerations
• While this PR solves the immediate usability issue for the Tremolo block, similar improvements could be made to other audio effect blocks (Chorus, Vibrato, Phaser, etc.) in future iterations. A more comprehensive parameter-level help system would require UI infrastructure changes beyond the scope of this fix.

Checklist

• I have read and followed the project's code of conduct
• My code follows the existing style and patterns of the project
• I have tested the changes locally
• All existing tests pass
• No new warnings or errors are introduced
• The PR description clearly explains the changes and their purpose

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[Commanderk3]

Hello @sankalppanchabhai123

If i hover over the rate or depth field then it should show me a tool tip right? But I cannot see any on testing. Can you add a screenshot ? just to verify that I am not doing any mistake.