Add backup file history

[Commanderx-code]

Summary

Backup & Restore → File history finds every saved copy of a file across all Restic snapshots and restores the version you choose.

• Search: a file name (matches in any folder), an exact path (/… or ~/…) or a */? pattern, with optional Ignore case. It's one reviewed, read-only job: a fixed sh -c script runs restic snapshots --json, then restic find --json -- <pattern>, and wraps both into one JSON document. find output has no snapshot times, so this keeps it to one review and one unlock. The pattern is passed as a positional argument and never spliced into the script, and it's rejected if empty, multi-line, over 1024 characters or starting with -.
• Results: grouped by path, newest first. Each copy shows the snapshot time, ID, host, modification time and size, marked First saved, Changed (size or mtime differs from the next older copy) or Same as previous. Show only versions that changed is on by default. If newer snapshots of the same host and backup path lack the file, a notice says it may have been deleted or moved.
• Restore this version fills the existing restore form with that snapshot and exact path. The restore still goes through review and never overwrites.

Tests

• Rust: pattern validation, plus a check that a malicious pattern ($(touch x); *.kdbx) is passed literally as an argument. The real temporary-repository Restic test now runs the search too: exact path, case-insensitive name, and no match.
• JS: the parser against a realistic fixture (change detection, deletion detection that ignores another host's snapshots, unreadable output), byte formatting, and an end-to-end UI test: request fields, review, HTML-escaped paths, the changes-only toggle, and restore prefill through to the reviewed restore request.
• Locally: 67 Rust, 76 JS, clippy -D warnings, build.

Not yet verified

Visual layout in the desktop app and a search against a large real repository. Worth one manual try before release.

🤖 Generated with Claude Code

https://claude.ai/code/session_01FV3o3TZ5zZ2ACWD2S7EZdc