Fix Docker image smoke-test failure caused by Typer/Click CLI incompatibility

[Copilot]

The Build Docker Image job failed at runtime when executing python -m erreetool.cli --help inside the built container. The failure came from a Typer/Click option parsing incompatibility that raised TypeError: Secondary flag is not valid for non-boolean flag.

• CLI option declaration cleanup

  • Reworked the memory import mode toggle to avoid Typer generating an invalid secondary flag for Click.
  • Replaced the dual-flag merge/replace declaration with an explicit --replace switch while preserving default merge behavior.

• Dependency compatibility pin

  • Added an explicit Click constraint (>=8.1.7,<8.2) alongside typer==0.12.3 in both packaging and runtime dependency manifests to prevent known incompatibilities in command/help rendering.

• Regression guard for CLI construction

  • Added a focused CLI test that builds the Typer command tree to catch this class of startup/parsing breakage early.

# erreetool/commands/memory.py
def run(
    ...,
    replace: bool = typer.Option(
        False, "--replace", help="Replace existing memory instead of merging"
    ),
) -> None:
    ...
    elif subcommand == "import":
        _import_memory(input_file, not replace)