feat: 将 command.rs 中的 ffmpeg 相关代码抽离到 helper/ffmp.rs 中, 同时将转发的Commad 改为异步

[Copilot]

The previous refactor moved ffmpeg logic into helper/ffmp.rs but left #[command] attributes there too, mixing Tauri command layer concerns with implementation logic.

Changes

• helper/ffmp.rs — Removed use tauri::command and all #[command] attributes; functions are now plain pub fn implementations
• command.rs — Replaced pub use ffmp::{...} re-exports with explicit #[command] wrappers that delegate to ffmp:::

#[command]
pub fn check_ffmpeg() -> bool { ffmp::check_ffmpeg() }

#[command]
pub fn convert_video_to_hls(path: &str) -> Result<String, String> { ffmp::convert_video_to_hls(path) }

#[command]
pub fn cancel_video_conversion() { ffmp::cancel_video_conversion() }

lib.rs and the invoke_handler registration are unchanged.

[Copilot]

Pull request overview

This PR separates Tauri command-layer concerns from the ffmpeg implementation by moving #[command]-annotated entrypoints back into command.rs, while keeping helper/ffmp.rs as a plain Rust implementation module.

Changes:

• Exposed helper::ffmp from helper/mod.rs.
• Refactored helper/ffmp.rs to contain only pure pub fn implementations (no tauri::command usage).
• Added #[command] wrappers in command.rs that delegate to helper::ffmp, and updated clear_cache to call ffmp::clear_ffmpeg_cache().

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src-tauri/src/helper/mod.rs	Exposes the new ffmp helper module.
src-tauri/src/helper/ffmp.rs	Holds ffmpeg/HLS implementation logic without Tauri command attributes.
src-tauri/src/command.rs	Adds Tauri #[command] wrappers delegating to helper::ffmp and updates cache clearing call site.

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