[jazzstack]

Problem

On a Logitech mouse that G HUB has never linked, the profiles section showed an empty list with no explanation — the report in issue #516. G HUB only writes the per-device profile files the first time it links a mouse, so OpenMouse had nothing to read and the user had no idea why the list was empty or what to do.

What was already there

PR c0764ae (two days after the issue) added a "Set up profiles" button that writes the captured Logitech factory profiles into the mouse without G HUB, offered whenever the list is empty and a complete factory image exists for the profile format. That covered the main path, but two gaps remained:

• The list itself still explained nothing. The Set up button sat unlabelled next to a mysterious empty section, and the standing hint ("Click a profile to edit it…") pointed at profiles that did not exist.
• Profile formats without a captured factory image (hasCapturedFactoryProfiles is false for formats 6 and 7, per logitech-factory.test.ts) never get a Set up button, so those users were still left with a silent empty list and no path forward.

Fix

• When the stored-profile list is empty, the section now explains the state directly in the list: no onboard profiles are stored yet because G HUB writes them on first link.
• The same note routes the user to the next action:
  • with a captured factory image: "Set up writes the factory profiles into the mouse's memory right now." (the existing Set up button is right there)
  • without one: "Open G HUB once and link the mouse, then reload profiles here." (the reload button is in the section header)
• The "Click a profile to edit it" hint now renders only when there are profiles to click.
• .profile-empty-note styling in src/styles/areas/library.css, using existing tokens.

Checks

• npm run build ✓
• npm test ✓ (0 failures)
• npm run size ✓ (CSS 92%, JS 99% of budget)

Fixes #516

Note

Add empty-state explanation to the onboard profiles list

The Profiles screen now shows a note when no onboard profiles exist. The note explains why the list is empty and picks between setup guidance and G HUB guidance, depending on whether setup profiles are available. The existing profile-list hint shows only when profiles exist. Adds the three new translation keys to all locale files in src/i18n/locales/, plus styling in library.css.

^{Macroscope summarized 90699c4.}

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