feat(git): tag management with restore for deleted tags and branches

macos/Sources/Lithe/Core/Rust/RustCoreBridge.swift

@@ -818,6 +818,18 @@ struct RustCoreBridge: Sendable {
             let conflictedPaths: [String]
         }
 
+        struct TagDeletion: Decodable, Sendable {
+            let name: String
+            let deletedTarget: String
+            let kind: GitTagKind
+            let message: String?
+        }
+
+        struct BranchDeletion: Decodable, Sendable {
+            let name: String
+            let deletedTarget: String
+        }
+
         let arguments: [String]?
         let output: String
         let stdout: String?
@@ -826,6 +838,8 @@ struct RustCoreBridge: Sendable {
         let invocations: [Invocation]?
         let operationError: OperationError?
         let stashRestore: StashRestore?
+        let tagDeletion: TagDeletion?
+        let branchDeletion: BranchDeletion?
     }
 
     struct GitDiffPayload: Decodable, Sendable {

macos/Sources/Lithe/Core/Rust/RustGitOperations.swift

@@ -30,6 +30,20 @@ struct RustGitOperations: GitOperations, Sendable {
                     stashReference: $0.stashReference,
                     conflictedPaths: $0.conflictedPaths
                 )
+            },
+            tagDeletion: response.tagDeletion.map {
+                GitTagDeletion(
+                    name: $0.name,
+                    deletedTarget: $0.deletedTarget,
+                    kind: $0.kind,
+                    message: $0.message
+                )
+            },
+            branchDeletion: response.branchDeletion.map {
+                GitBranchDeletion(
+                    name: $0.name,
+                    deletedTarget: $0.deletedTarget
+                )
             }
         )
     }
@@ -310,6 +324,25 @@ struct RustGitOperations: GitOperations, Sendable {
         write(at: rootURL, operation: "stageAll")
     }
 
+    func createTag(
+        named name: String,
+        at revision: String,
+        message: String?,
+        rootURL: URL
+    ) -> GitProcessResult? {
+        write(
+            at: rootURL,
+            operation: "createTag",
+            revision: revision,
+            name: name,
+            message: message
+        )
+    }
+
+    func deleteTag(named name: String, rootURL: URL) -> GitProcessResult? {
+        write(at: rootURL, operation: "deleteTag", name: name)
+    }
+
     func snapshot(at rootURL: URL) -> GitSnapshot? {
         core.gitStatus(at: rootURL)?.makeSnapshot(at: rootURL)
     }

macos/Sources/Lithe/Models/AppModel/AppModel+FeatureState.swift

@@ -216,6 +216,12 @@ extension AppModel {
     var requestedStashReference: String? {
         gitFeatureIfActive?.requestedStashReference
     }
+    var recentlyDeletedTag: GitTagDeletion? {
+        gitFeatureIfActive?.recentlyDeletedTag
+    }
+    var recentlyDeletedBranch: GitBranchDeletion? {
+        gitFeatureIfActive?.recentlyDeletedBranch
+    }
     var isCommitting: Bool { gitFeatureIfActive?.isCommitting ?? false }
     var gitBlameLines: [URL: [GitBlameLine]] { gitFeatureIfActive?.gitBlameLines ?? [:] }
     var gitReferences: [GitReference] { gitFeatureIfActive?.gitReferences ?? [] }

macos/Sources/Lithe/Models/AppModel/AppModel.swift

@@ -1658,6 +1658,37 @@ final class AppModel: ObservableObject, Identifiable {
         await gitFeature.deleteBranch(reference)
     }
 
+    func restoreRecentlyDeletedBranch() async {
+        guard let gitFeature = await activateGitModule() else { return }
+        await gitFeature.restoreRecentlyDeletedBranch()
+    }
+
+    func dismissDeletedBranchBanner() {
+        gitFeatureIfActive?.dismissDeletedBranchBanner()
+    }
+
+    /// Returns nil on success, otherwise the error message a tag dialog
+    /// should show where the user typed.
+    @discardableResult
+    func createTag(at commit: GitCommit, name: String, message: String) async -> String? {
+        guard let gitFeature = await activateGitModule() else { return "No Git repository is open" }
+        return await gitFeature.createTag(at: commit, name: name, message: message)
+    }
+
+    func deleteTag(_ reference: GitReference) async {
+        guard let gitFeature = await activateGitModule() else { return }
+        await gitFeature.deleteTag(reference)
+    }
+
+    func restoreRecentlyDeletedTag() async {
+        guard let gitFeature = await activateGitModule() else { return }
+        await gitFeature.restoreRecentlyDeletedTag()
+    }
+
+    func dismissDeletedTagBanner() {
+        gitFeatureIfActive?.dismissDeletedTagBanner()
+    }
+
     func mergeBranch(_ reference: GitReference) async {
         guard let gitFeature = await activateGitModule() else { return }
         await gitFeature.mergeBranch(reference)

macos/Sources/Lithe/Views/Git/GitGraphView.swift

@@ -11,6 +11,7 @@ struct GitGraphRowActions {
     let onCherryPick: (GitCommit) -> Void
     let onRevert: (GitCommit) -> Void
     let onReset: (GitCommit) -> Void
+    let onCreateTag: (GitCommit) -> Void
 }
 
 struct GitGraphView: View {
@@ -136,6 +137,7 @@ private struct GitGraphRowView: View, Equatable {
                 NSPasteboard.general.setString(row.commit.shortHash, forType: .string)
             }
             Divider()
+            Button("New Tag…") { actions.onCreateTag(row.commit) }
             Button("Cherry-pick Commit…") { actions.onCherryPick(row.commit) }
             Button("Revert Commit…") { actions.onRevert(row.commit) }
             Button("Reset Current Branch to Here…") { actions.onReset(row.commit) }