chore: release v0.4.19

[MagicalTux]

🤖 New release

• fstool: 0.4.18 -> 0.4.19

Changelog

0.4.19 - 2026-07-12

Added

• (web) in-browser WebAssembly UI + in-memory inspect/convert API

Fixed

• (hfs+) restore create_file_streaming override clobbered in merge
• (web) keep [hidden] elements hidden over author display rules

Other

• de-link private intra-doc references (rustdoc -D warnings)
• (f2fs) use map values()/keys() to satisfy clippy for_kv_map
• (fs) sequential archives hold no index — forward-scan on read
• (fs) honest per-file read seekability — no RAM-faked Seek
• (fs) finish write-path streaming; add AccessMode capability
• (fs) stream file bodies on write; drop tempfile dependency
• (web) rebuild UI in Vue 3 + Vite; fold wasm bindings into fstool crate
• link the live web demo in the README
• lower MSRV to 1.88 (purecrypto 0.6.14)

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This PR was generated with release-plz.