test(ansible): Phase 1 Steps 1.0-1.1 — SSH mock + command module tests
Step 1.0: MockSSHClient with command registry, file system simulation,
become state tracking, execution log, upload log, and assertion helpers.
Module shims via sshRunner interface for testability.
Step 1.1: 48 tests for command/shell/raw/script modules verifying:
- command uses Run(), shell uses RunScript()
- chdir wrapping, non-zero RC, SSH error propagation
- raw passes through without shell wrapping
- script reads local file content, sends via RunScript()
- Cross-module dispatch differentiation
- Template variable resolution in args
Co-Authored-By: Virgil <virgil@lethean.io>
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