Unify production and test invocation and restore native Click option syntax

[codeforester]

Parent: #50

Train position: 3 of 22
Phase: P0 — Trustworthy lifecycle

Problem

base_cli.testing.invoke() bypasses the production invocation boundary, logs the wrong argv, and the framework rejects legal Click syntax such as --option=value.

Acceptance criteria

• CLI entry points and base_cli.testing.invoke() exercise the same framework invocation boundary.
• Effective/logged argv, exit codes, errors, lifecycle behavior, and subcommand behavior match between tests and production.
• The pre-parser rejection is removed and Click-native --option=value works, including sensitive option values.
• Parity regressions cover success, usage errors, unexpected exceptions, and command groups.

Dependencies

• Make lifecycle teardown failure-safe #51
• Finalize run metadata and normalize every invocation outcome #52