0569c5ff23
Add GET /api/audit/tree endpoint that accepts executionId query param, authenticates via HTTP Basic + LDAP (OperationalAudit permission), calls IAuditLogRepository.GetExecutionTreeAsync, and returns a JSON array of ExecutionTreeNode. Returns 400 for missing/invalid GUID, 401/403 as normal. Add `scadabridge audit tree --execution-id <guid> [--format table|json]` CLI subcommand in AuditCommands.Build(). Adds AuditTreeHelpers with: - BuildUrl: constructs the relative URL + query string - RunTreeAsync: calls the endpoint, dispatches to table or JSON renderer - WriteTable: indented ASCII tree (root → children, [*] marks queried node) - WriteJson: pretty-printed JSON array pass-through Tests: 7 new ManagementService endpoint tests (valid id, empty, 400, 401, 403, Viewer allowed, wrong role), 18 new CLI tests (parse, render, HTTP error codes, JSON output, multi-level indentation, queried-node marker).