* Standardize CLI error handling and deprecate cli.Fatal
- Updated `pkg/cli/output.go` to send error and warning output to `os.Stderr`.
- Added `ErrorWrap`, `ErrorWrapVerb`, and `ErrorWrapAction` helpers to `pkg/cli/output.go`.
- Deprecated `cli.Fatal` family of functions in `pkg/cli/errors.go`.
- Introduced `cli.ExitError` and `cli.Exit` helper to allow commands to return specific exit codes.
- Updated `pkg/cli/app.go` to silence Cobra errors and handle error printing and process exit in `Main`.
- Refactored multiple commands (QA, SDK, CI, Updater) to return errors instead of exiting abruptly.
- Replaced direct `os.Stderr` writes with standardized CLI or log helpers across the codebase.
- Updated tests to accommodate changes in output destination.
* Fix CI failure: remove unused fmt import in pkg/mcp/transport_tcp.go
- Removed unused "fmt" import in `pkg/mcp/transport_tcp.go` that was causing CI failure.
- Verified build and relevant tests pass.
* Standardize CLI error handling and fix formatting issues
- Updated `pkg/cli/output.go` to send error and warning output to `os.Stderr`.
- Added `ErrorWrap`, `ErrorWrapVerb`, and `ErrorWrapAction` helpers to `pkg/cli/output.go`.
- Deprecated `cli.Fatal` family of functions in `pkg/cli/errors.go`.
- Introduced `cli.ExitError` and `cli.Exit` helper to allow commands to return specific exit codes.
- Updated `pkg/cli/app.go` to silence Cobra errors and handle error printing and process exit in `Main`.
- Refactored multiple commands (QA, SDK, CI, Updater) to return errors instead of exiting abruptly.
- Replaced direct `os.Stderr` writes with standardized CLI or log helpers across the codebase.
- Updated tests to accommodate changes in output destination.
- Fixed formatting in `pkg/io/local/client.go`.
- Removed unused `fmt` import in `pkg/mcp/transport_tcp.go`.
* Standardize CLI error handling and fix CI issues
- Updated `pkg/cli/output.go` to send error and warning output to `os.Stderr`.
- Added `ErrorWrap`, `ErrorWrapVerb`, and `ErrorWrapAction` helpers to `pkg/cli/output.go`.
- Deprecated `cli.Fatal` family of functions in `pkg/cli/errors.go`.
- Introduced `cli.ExitError` and `cli.Exit` helper to allow commands to return specific exit codes.
- Updated `pkg/cli/app.go` to silence Cobra errors and handle error printing and process exit in `Main`.
- Refactored multiple commands (QA, SDK, CI, Updater) to return errors instead of exiting abruptly.
- Replaced direct `os.Stderr` writes with standardized CLI or log helpers across the codebase.
- Updated tests to accommodate changes in output destination.
- Fixed formatting in `pkg/io/local/client.go`.
- Removed unused `fmt` import in `pkg/mcp/transport_tcp.go`.
- Fixed potential `gh` context issue in `.github/workflows/auto-merge.yml` by providing `GH_REPO`.
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Co-authored-by: Claude <developers@lethean.io>
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