#46 Route silent Rust failures through tauri-plugin-log; add Reveal-log button

[Anonymous]

Originally created by: kristofferR

`tauri-plugin-log` is already a dependency but there are ~2 `log::` calls versus ~46 `let _ =` discards and 8 `eprintln!` in `lib.rs`. Meaningful failures (settings save, webview-data clearing, tray rebuild) should go through `log::warn!/error!` so release builds capture them.

Add a "Reveal log file" button under Settings → Advanced to complete the diagnostics story.

[Anonymous]

Originally posted by: kristofferR

Done in [#62]: tauri-plugin-log configured with stdout + log-dir targets (deps capped at Warn), every eprintln! converted to log::warn!/error! (including the hotkey/zoom code that landed mid-flight), page diagnostics logged sanitized + session-capped, and an "Open log folder" button under Settings → Advanced.

[Anonymous]

Ticket changed by: kristofferR

• status: open --> closed