chore: switch internal deps to published versions and track Cargo.lock

Pin nodedb-client and nodedb-types to version 0.3.0 in the workspace
manifest instead of machine-specific path dependencies; local checkout
overrides stay in a gitignored .cargo/config.toml patch. Commit Cargo.lock
so builds are reproducible. Bump MSRV to 1.96 and upgrade Dioxus 0.6 → 0.7
in the manifest (code-side call-site fixes follow in a subsequent commit).

Author: farhan-syah

.gitignore

@@ -6,7 +6,6 @@
 /nodedb-data/
 **/*.rs.bk
 *.pdb
-Cargo.lock
 
 # IDE and Editor files
 .vscode/