feat(tauri): persist unpack logs and clean sidecar output

Unpack logs lived only in memory, so closing the app dropped history.
Unrar progress also flooded stdout with carriage-return redraws, which
made the log viewer noisy and hard to search.

Persist the last twenty entries to unpack-logs.json under the app data
directory, load them on startup, and rewrite stdout/stderr through a
small terminal-sequence cleaner (CR/LF, backspace, control chars) before
storage and display. Sort the unpack-logs window newest-first by finish
or start time.

Test plan:
- cargo test -p lanspread-tauri-deno-ts -- terminal_log unpack_log
- Run an unpack, restart the app, open unpack logs: prior entries remain
- Confirm progress lines collapse to final text instead of spam

Co-authored-by: Cursor <cursoragent@cursor.com>

crates/lanspread-tauri-deno-ts/src-tauri/Cargo.toml

@@ -37,6 +37,7 @@ eyre = { workspace = true }
 log = { workspace = true }
 mimalloc = { workspace = true }
 serde = { workspace = true }
+serde_json = { workspace = true }
 tauri = { workspace = true }
 tauri-plugin-log = { workspace = true }
 tauri-plugin-shell = { workspace = true }