Double-click binding name to rename

[xal3xhx]

Summary

• Double-clicking a binding's name opens the inline rename editor
• Matches the behavior of the pencil button for button bindings, and bypasses the fader config modal so the name is always what gets edited
• Cursor and tooltip hint the affordance; user-select: none prevents the text-selection flash on double-click

Implementation

• src/features/bindings/bindings.js — dblclick listener on the .binding-name label calls beginBindingEdit(binding.id, true) (forceInline = true so faders also rename inline)
• src/styles/bindings-and-panels.css — .binding-name gets cursor: text and user-select: none

Test plan

• Double-click a button binding's name — input appears, rename commits on blur/enter
• Double-click a fader binding's name — same inline rename (no fader config modal)
• Single-click still does nothing / does not enter edit mode
• Pencil button still works as before (fader → config modal, button → rename)
• No text-selection flash on double-click