Get native indicator style from config

[poodle64]

Description

src-tauri/src/recording_indicator.rs:428 has a TODO to read the indicator style from config rather than hardcoding CursorDot.

Currently:

let style = native::IndicatorStyle::CursorDot; // TODO: Get from config

Should read from config.general.indicator_style or similar config field.

Acceptance Criteria

• Indicator style read from user config
• Falls back to CursorDot if not set