Fetch the team's code review rules from a remote server via SSH.

IMPORTANT: You should call this tool BEFORE reviewing any merge requests or code changes
to understand the team's code review standards and guidelines.

Returns:
    str: The code review rules content on success, or a simple message if SSH is not configured
    Dict: Error information only on connection failures

Fetch a GitLab merge request and its contents.

IMPORTANT: You MUST call fetch_code_review_rules BEFORE using this tool to understand 
the team's code review standards and guidelines.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
Returns:
    XML string containing the merge request information

Compare two commits/branches/tags to see the differences between them.

Args:
    project_id: The GitLab project ID or URL-encoded path
    from_sha: The source commit/branch/tag
    to_sha: The target commit/branch/tag
Returns:
    Dict containing the comparison information

Add a general comment to a merge request.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    body: The comment text
Returns:
    Dict containing the created comment information

Add a discussion to a merge request at a specific position in a file.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    body: The discussion text
    position: Position data for the discussion.
        Example:
        {
            "position_type": "text", // Required, Type of the position reference. Allowed values: text, image, or file. file introduced in GitLab 16.4.
            "base_sha": "...", // Required, Base commit SHA in the source branch.
            "start_sha": "...", // Required, SHA referencing commit in target branch.
            "head_sha": "...", // Required, SHA referencing HEAD of this merge request.
            "old_path": "path/to/file.py", // Required, File path before change.
            "new_path": "path/to/file.py", // Required, File path after change.
            "new_line": 15, // For text diff notes, the line number after change.
            "old_line": 10 // For text diff notes, the line number before change.
        }
Returns:
    Dict containing the created discussion information

Reply to a merge request discussion.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    discussion_id: The ID of the discussion to reply to
    body: The reply text
Returns:
    Dict containing the created note information

Resolve or unresolve a merge request discussion.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    discussion_id: The ID of the discussion
    resolved: True to resolve, False to unresolve
Returns:
    Dict containing the updated discussion information

Delete a merge request discussion.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    discussion_id: The ID of the discussion to delete
Returns:
    Dict containing the status of the deletion

Approve a merge request.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    approvals_required: Optional number of required approvals to set
Returns:
    Dict containing the approval information

Unapprove a merge request.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
Returns:
    Dict containing the unapproval information

Get all merge requests for a project.

Args:
    project_id: The GitLab project ID or URL-encoded path
    state: Filter merge requests by state (all, opened, closed, merged, or locked)
    limit: Maximum number of merge requests to return
Returns:
    List of merge request objects

Search for GitLab projects by name.

Args:
    project_name: The name of the project to search for. If None, returns all projects.
Returns:
    A list of projects matching the search criteria.