Refactor header

[OpenSauce]

No description provided.

[Copilot]

Pull Request Overview

This PR centralizes widget header logic by introducing a shared stage_header helper and replacing inline header construction in each stage widget.

• Add stage_header function to mod.rs and import it into each widget.
• Define a module-level HEADER_TEXT constant in each widget and remove duplicated icon_button logic.
• Simplify containers and layouts across tone stack, preamp, power amp, filter, and compressor widgets.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/gui/widgets/tonestack.rs	Imported stage_header and replaced inline header code.
src/gui/widgets/preamp.rs	Ditto, plus added a TODO for background color.
src/gui/widgets/poweramp.rs	Ditto, simplified container layout.
src/gui/widgets/filter.rs	Ditto.
src/gui/widgets/compressor.rs	Ditto, cleaned up imports.
src/gui/widgets/mod.rs	Introduced the new stage_header helper function.

Comments suppressed due to low confidence (4)

src/gui/widgets/mod.rs:52

• [nitpick] Consider adding a doc comment for stage_header to describe its purpose, parameters, and return value for clearer code maintenance.

pub fn stage_header(stage_name: &str, idx: usize, total_stages: usize) -> Element<Message> {

src/gui/widgets/tonestack.rs:7

• [nitpick] The constant name HEADER_TEXT is quite generic. You might rename it to STAGE_LABEL or STAGE_NAME to better convey its purpose and avoid potential confusion.

const HEADER_TEXT: &str = "ToneStack";

src/gui/widgets/mod.rs:82

• The original headers placed the stage title before the buttons. The new order shows buttons first then text, which may unintentionally alter the UI layout. Confirm this change is intentional or revert to text followed by the icon buttons.

row![move_up_btn, move_down_btn, remove_btn, text(header_text)]

src/gui/widgets/preamp.rs:50

• [nitpick] Add a tracking issue or remove this TODO to ensure the background color improvement isn’t forgotten or left without follow-up.

// TODO: Use a better background colour