optimize git2 for good measure, and enable them from tauri and cli

crates/gitbutler-cli/src/main.rs

@@ -9,6 +9,7 @@ mod command;
 
 fn main() -> Result<()> {
     let args: Args = clap::Parser::parse();
+    gitbutler_project::configure_git2();
 
     match args.cmd {
         args::Subcommands::Branch(vbranch::Platform { cmd }) => {

crates/gitbutler-project/src/lib.rs

@@ -7,3 +7,14 @@ mod storage;
 pub use controller::Controller;
 pub use project::{ApiProject, AuthKey, CodePushState, FetchResult, Project, ProjectId};
 pub use storage::UpdateRequest;
+
+/// A utility to be used from applications to optimize `git2` configuration.
+/// See comments for details.
+pub fn configure_git2() {
+    // Do not re-hash each decoded objects for quite a significant performance gain.
+    // This delegates object validation to `git fsck`, which seems fair.
+    git2::opts::strict_hash_verification(false);
+    // Thus far, no broken object was created, and if that would be the case, tests should catch it.
+    // These settings are only changed from `main` of applications.
+    git2::opts::strict_object_creation(false);
+}

crates/gitbutler-tauri/src/main.rs

@@ -20,6 +20,7 @@ use tauri::{generate_context, Manager};
 use tauri_plugin_log::LogTarget;
 
 fn main() {
+    gitbutler_project::configure_git2();
     let tauri_context = generate_context!();
     gitbutler_secret::secret::set_application_namespace(
         &tauri_context.config().tauri.bundle.identifier,