feat: instance sharing thru shared-instances service (#6569)

* feat: implement instance share page + search_users backend call

* feat: invite players modal

* feat: use tanstack queries for friends sync across app pages

* feat: base shared instances implementation

* fix: admon style

* feat: impl instance admonitions like server panel

* fix: impl get + del usage

* feat: support modpack links

* feat: invite notif accepting

* fix: lint + fmt

* feat: impl install to play

* feat: impl usage of UpdateToPlayModal

* feat: warnings on deleting/disabling shared-instance version content

* fix: send instance name

* feat: align with backend

* feat: shared instances qa

* feat: wrong account protection

* feat: qa

* fix: smartly apply updates

* fix: install bug

* fix: 401/404 differentiation

* fix: fmt+prepr

* feat: qa

* feat: qa

* fix: signing out messes up revoke/deleted checks

* feat: qa

* fix: fmt + lint

* feat: lock content if part of shared instance

* fix: lint

* [do not merge] feat: rough invite links impl temp (#6666)

* fix: wrong cmd

* feat: invite page

* fix: server-manager DTO mismatch

* fix: drop anonymous invite link acceptance

* refactor: structured shared-instance unavailable errors

* refactor: centralise error presentations

* refactor: dedupe shared instance diff detection

* fix: logging in reqwests

* refactor: move app.vue shared instances into handler

* refactor: break up Share.vue

* refactor: split up shared instances state outside of instance index

* refactor: dedicated shared instances install/update modals + split up page

* refactor: centralized managed content

* refactor: split up install shared to own runner + shared.rs split up

* refactor: dedupe sql for instance metadata enrichmnt

* refactor: friends composable + dedupe friends logic across usages

* chore: reduced unused code

* fix: align with backend

* fix: lint

* fix: file sha changes

* fix: invite links not working due to icon signed

* feat: qa

* feat: reporting frontend dummy

* fix: try use header

* remove: file hash field

* fix: pin box

* feat: malware warning for shared instances

* fix: cache rule

* feat: config files syncing

* feat: disable config sharing

* fix: header

* fix: use mark ready

* fix: dont cause push update for configs

* fix: lint

* feat: sharing page in settings

* feat: move config + change flow

* fix: qa

* fix: lint prepr

* feat: proxy file upload thru shared instances backend

* fix: use collapisible

* fix: push config

* fix: config

* feat: swap out sign in modal for new one

* fix: report flow

* fix: exclude configs.zip from external warnings

* fix: nuxi init

* fix: config bundle downloading

* fix: error notif

* fix: polling

* fix: qa

* fix: lint + prepr

* feat: shared instances moderation frontend + hook up report flow

* fix: report copy

* fix: lint

* fix: lint

* fix: modrinth ids being undefined

* feat: instance quarantining

* fix: prepr + fmt

* fix: quarantined -> locked terminology

* fix: missing endpoint impls + fmt

* fix: missing api in build.rs

* fix: share tab jittery

* fix: fmt

*PT bug

* fix: invites count as users even if pending

* fix: prepr

* fix: invite page owner in users list

* fix: lint

* fix: qa

* fix: lint

* fix: members stale not clearing

* fix: invite use joined_at field

* fix: lint

* fix: qa

---------

Co-authored-by: sychic <47618543+Sychic@users.noreply.github.com>

packages/app-lib/src/launcher/mod.rs

@@ -290,6 +290,7 @@ pub async fn install_minecraft_with_reporter(
     };
 
     let state = State::get().await?;
+    let previous_install_stage = instance.install_stage;
 
     crate::state::instances::commands::set_instance_install_stage(
         &instance.id,
@@ -299,6 +300,7 @@ pub async fn install_minecraft_with_reporter(
     .await?;
     emit_instance(&instance.id, InstancePayloadType::Edited).await?;
 
+    let result = async {
     let instance_path = get_instance_full_path(&instance.path).await?;
     if let Some(reporter) = &reporter {
         reporter
@@ -618,7 +620,34 @@ pub async fn install_minecraft_with_reporter(
         emit_loading(loading_bar, 1.0, Some("Finished installing"))?;
     }
 
-    Ok(())
+    Ok::<(), crate::Error>(())
+    }
+    .await;
+
+    if result.is_err() {
+        if let Err(error) =
+            crate::state::instances::commands::set_instance_install_stage(
+                &instance.id,
+                previous_install_stage,
+                &state.pool,
+            )
+            .await
+        {
+            tracing::error!(
+                "Failed to restore install stage for instance {}: {error}",
+                instance.id
+            );
+        } else if let Err(error) =
+            emit_instance(&instance.id, InstancePayloadType::Edited).await
+        {
+            tracing::error!(
+                "Failed to emit restored install stage for instance {}: {error}",
+                instance.id
+            );
+        }
+    }
+
+    result
 }
 
 pub async fn install_minecraft_for_instance_id_with_reporter(