Add "Push Current Commit Tags" action to Remotes menu

[NikKovIos]

Summary

Adds a new Remotes → Push Current Commit Tags menu item (shortcut ⌃⇧⌘T, Cmd+Shift+Ctrl+T) that pushes the tags pointing at the current commit to all remotes.

• Current commit is resolved as the commit selected in the graph, or HEAD when nothing is selected — mirroring the "current" semantics of the neighbouring Push Current Branch item.
• Tags are force-pushed, consistent with GitUp's existing tag-push behavior (_pushTag:toRemote: / pushAllTagsToAllRemotes), and pushed to all remotes by looping over listRemotes: inside a single background operation, following the existing deleteTagFromAllRemotes: pattern.
• The menu item is disabled when the current commit has no tags.
• A single confirmation dialog (suppressible via the shared kUserDefaultsKey_SkipPushTagWarning) lists the tags before pushing, and a success/error overlay is shown on completion.

Implementation

• GIMapViewController+Operations.{h,m} — new -pushTagsToAllRemotes: operation (confirm → background loop over remotes × tags → overlay), modeled on deleteTagFromAllRemotes: and pushAllTagsToAllRemotes.
• GIMapViewController.{h,m} — new -pushCurrentCommitTags: IBAction and a validation branch in validateUserInterfaceItem: (placed before the selected-commit guard so it works without a graph selection).
• MainMenu.xib — new menu item under Remotes, wired to First Responder with the ⌃⇧⌘T key equivalent (no conflict: ⇧⌘T = Fetch All Tags, ⌥⌘T = Fetch and Prune).

Testing

• Builds cleanly (Application scheme, Debug); the item, title and selector are present in the compiled MainMenu.nib.
• Note: exercising the actual network push requires a configured remote with credentials.

[greptile-apps]

Greptile Summary

This PR adds a Remotes → Push Current Commit Tags menu item (⌃⇧⌘T) that force-pushes all tags on the selected (or HEAD) commit to every configured remote. The implementation closely mirrors the existing deleteTagFromAllRemotes: and pushTag:toRemote: patterns: a confirmation dialog (with its own suppression key kUserDefaultsKey_SkipPushCurrentCommitTagsWarning) → main-thread listRemotes: → background loop over remotes × tags → success/error overlay.

• GIMapViewController+Operations.m adds pushTagsToAllRemotes:, fetches remotes inside the confirmation block, and runs the push loop in a background operation consistent with existing all-remote operations.
• GIMapViewController.m adds the IBAction and a validateUserInterfaceItem: branch placed before the selected-commit guard so it works when no commit is selected (falls back to HEAD).
• MainMenu.xib wires the new menu item to First Responder with ⌃⇧⌘T (no conflict with existing bindings).

Confidence Score: 5/5

Safe to merge — the new action correctly follows the established all-remotes background-loop pattern with a distinct suppression key and proper enable/disable validation.

The implementation is a faithful application of existing patterns: confirmation dialog with its own suppression key, main-thread remote enumeration, background-threaded push loop with early-exit on error, and a success/error overlay. Edge cases (no selection, unborn HEAD, empty tag list, no remotes, remote list error) are all handled correctly through nil-messaging safety and explicit guards. The only finding is a minor alert-type inconsistency that does not affect correctness.

Files Needing Attention: No files require special attention.

Important Files Changed

Filename	Overview
GitUpKit/Views/GIMapViewController+Operations.m	Adds pushTagsToAllRemotes: implementing force-push of commit tags to all remotes; uses a distinct suppression key and follows the deleteTagFromAllRemotes: background-loop pattern, but uses kGIAlertType_Caution where other all-remotes operations use _AlertTypeForDangerousRemoteOperations().
GitUpKit/Views/GIMapViewController.m	Adds pushCurrentCommitTags: IBAction and the corresponding validateUserInterfaceItem: branch; correctly placed before the selected-commit guard so it works on HEAD when nothing is selected.
GitUpKit/Views/GIMapViewController+Operations.h	Declares pushTagsToAllRemotes: with an untyped NSArray* parameter; every adjacent method in this file uses Objective-C lightweight generics (GCHistoryTag*, etc.).
GitUpKit/Views/GIMapViewController.h	Adds pushCurrentCommitTags: IBAction declaration; straightforward one-liner addition consistent with adjacent declarations.
GitUp/Application/Base.lproj/MainMenu.xib	Adds the new menu item under Remotes with ⌃⇧⌘T shortcut wired to pushCurrentCommitTags: on First Responder; shortcut does not conflict with existing bindings (⇧⌘T / ⌥⌘T).

Sequence Diagram

sequenceDiagram
    participant User
    participant Menu as MainMenu
    participant MVC as GIMapViewController
    participant Ops as GIMapViewController+Operations
    participant Repo as GCRepository
    participant Remote as GCRemote(s)

    User->>Menu: Click Push Current Commit Tags
    Menu->>MVC: validateUserInterfaceItem:
    MVC->>MVC: selectedCommit ?: HEADCommit
    MVC-->>Menu: "enabled if commit.tags.count > 0"

    User->>MVC: pushCurrentCommitTags:
    MVC->>MVC: selectedCommit ?: HEADCommit
    MVC->>Ops: pushTagsToAllRemotes:(commit.tags)
    Ops->>User: confirmUserActionWithAlertType
    User-->>Ops: Confirm

    Ops->>Repo: listRemotes:
    Repo-->>Ops: NSArray of GCRemote

    Ops->>Repo: performOperationInBackground
    loop for each remote x tag
        Repo->>Remote: pushTag toRemote force YES
        Remote-->>Repo: success or error
    end
    Repo-->>Ops: completionBlock(success, error)
    alt success
        Ops->>User: showOverlay tags pushed successfully
    else error
        Ops->>User: presentError
    end

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_{Reviews (2): Last reviewed commit: "Use a dedicated suppression key for push..." | Re-trigger Greptile}