fix(rollback): prevent dangerous blanket destroy and add rollback safety tests - #50

unformatted: File would be reformatted
   --> src/deploydiff/cli.py:76:15
    |
75  | )
76  + @click.option("-v", "--verbose", is_flag=True, help="Show before/after details for each change")
77  | @click.option(
    -     "-v", "--verbose", is_flag=True, help="Show before/after details for each change"
    - )
    - @click.option(
78  |     "--exit-on-destroy",
79  |     is_flag=True,
80  |     help="Exit with code 1 if the plan contains destructive changes (deletes or replaces)",
81  | )
    - def preview(
    -     terraform_file, cloudformation_file, pulumi_file, verbose, exit_on_destroy
    - ) -> None:
82  + def preview(terraform_file, cloudformation_file, pulumi_file, verbose, exit_on_destroy) -> None:
83  |     """Preview infrastructure changes from a plan file."""
--------------------------------------------------------------------------------
129 | )
    - def cost(
    -     terraform_file, cloudformation_file, pulumi_file, pricing_file, threshold
    - ) -> None:
130 + def cost(terraform_file, cloudformation_file, pulumi_file, pricing_file, threshold) -> None:
131 |     """Estimate monthly cost impact of infrastructure changes. (Pro feature)"""
--------------------------------------------------------------------------------
199 |     if len(provided) > 1:
    -         console.print(
    -             "[red]Error: Provide only one source file (--tf, --cfn, or --pulumi)[/red]"
    -         )

 AGENTS.md                     |    3 +-
 package-lock.json             | 1106 +++++++++++++++++++++++++++++++++++++++++
 src/deploydiff/rollback.py    |   43 +-
 tests/test_edge_cases.py      |    5 +-
 tests/test_rollback_safety.py |   50 ++
 5 files changed, 1195 insertions(+), 12 deletions(-)