Update dependencies and refactor SHA256 hash encoding

- Updated `crossterm` from version 0.28 to 0.29.
- Upgraded `reqwest` from version 0.12 to 0.13 and added "form" feature.
- Bumped `serde_yaml_ng` from version 0.9 to 0.10.
- Increased `dirs` version from 5 to 6.
- Updated `rusqlite` from version 0.32 to 0.40.
- Upgraded `infer` from version 0.16 to 0.19.
- Bumped `sha2` from version 0.10 to 0.11.
- Updated `rmcp` from version 1.8 to 2.2.
- Refactored SHA256 hash encoding in `rewind.rs`, `mod.rs`, and `rest.rs` to use `hex::encode` instead of formatting with `{:x}` for better clarity and consistency.

src/app/mode/rewind.rs

@@ -99,7 +99,7 @@ pub fn rewind_to(state: &mut AppStateRest, index: usize) {
         tool: "rewind".to_string(),
         path: restore_path.to_string_lossy().to_string(),
         reason: format!("rewind_to({index})"),
-        content_sha256: format!("{:x}", sha2::Sha256::digest(&bytes)),
+        content_sha256: hex::encode(sha2::Sha256::digest(&bytes)),
         bytes_delta: bytes.len() as i64,
         origin: crate::app::state::types::Origin::Main.tag(),
         session_id: state.session_id.clone(),