Add installability verification for .deb packages

[embtom]

Added verification steps to ensure .deb packages are installable with dpkg on a clean Debian image.

[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	86 ran	86 passed	0 skipped	0 failed	27s 704ms

Test	Result	Time ⏱
JUnit Test Report
pytest
test_apt.test_add_key_writes_gpg_file	✅ passed	40ms
test_apt.test_add_key_path_is_in_keyrings_dir	✅ passed	2ms
test_apt.test_add_key_file_is_not_armored	✅ passed	2ms
test_apt.test_add_key_binary_input_also_accepted	✅ passed	3ms
test_apt.test_add_repo_creates_sources_file	✅ passed	35ms
test_apt.test_add_repo_sources_file_has_correct_content	✅ passed	2ms
test_apt.test_add_repo_is_idempotent	✅ passed	61ms
test_apt.test_add_repo_without_keyring	✅ passed	30ms
test_apt.test_add_repo_components_as_list	✅ passed	30ms
test_apt.test_apt_cache_update_success	✅ passed	9ms
test_apt.test_apt_cache_update_failure	✅ passed	6ms
test_apt.test_install_dependencies_not_in_cache	✅ passed	4ms
test_apt.test_install_dependencies_success	✅ passed	5ms
test_apt.test_install_dependencies_commit_error	✅ passed	5ms
test_apt.test_install_dependencies_source_host[versions0-my-apt.example.com-True]	✅ passed	5ms
test_apt.test_install_dependencies_source_host[versions1-my-apt.example.com-False]	✅ passed	5ms
test_apt.test_install_dependencies_source_host[versions2-my-apt.example.com-True]	✅ passed	5ms
test_apt.test_package_exists_true_without_source_host	✅ passed	4ms
test_apt.test_upstream_package_exists_true_for_matching_host	✅ passed	4ms
test_apt.test_upstream_package_exists_false_for_non_matching_host	✅ passed	4ms
test_apt.test_dearmor_ascii_armored_key	✅ passed	3ms
test_apt.test_dearmor_invalid_base64	✅ passed	4ms
test_apt.test_parse_deb_file_missing_file	✅ passed	6ms
test_apt.test_parse_deb_file_success	✅ passed	5ms
test_apt.test_parse_deb_file_invalid	✅ passed	5ms
test_aptly.test_upload_marks_changed_when_new_package_added	✅ passed	3ms
test_aptly.test_upload_batches_add_after_all_files_uploaded	✅ passed	4ms
test_cli.test_resolve_aptly_credentials_from_test_file	✅ passed	2ms
test_cli.test_resolve_aptly_credentials_from_file	✅ passed	3ms
test_cli.test_resolve_aptly_credentials_ignores_comments	✅ passed	3ms
test_cli.test_resolve_aptly_credentials_requires_both_entries	✅ passed	3ms
test_cli.test_parse_args_accepts_credentials_file	✅ passed	3ms
test_cli.test_parse_args_force_upload_default_disabled	✅ passed	2ms
test_cli.test_parse_args_force_upload_enabled_when_flag_present	✅ passed	2ms
test_cmd.test_arg	✅ passed	2ms
test_deb_source.test_is_quilt_format_true	✅ passed	4ms
test_deb_source.test_is_quilt_format_native	✅ passed	4ms
test_deb_source.test_source_name_and_version	✅ passed	4ms
test_deb_source.test_orig_tarball_exists_ignores_asc	✅ passed	5ms
test_deb_source.test_remove_existing_orig	✅ passed	5ms
test_deb_source.test_branch_exists_local	✅ passed	45ms
test_deb_source.test_repo_none_for_non_git_tree	✅ passed	3ms
test_deb_source.test_repo_does_not_climb_to_parent	✅ passed	16ms
test_deb_source.test_reset_source_tree_cleans_untracked	✅ passed	45ms
test_deb_source.test_reset_source_tree_noop_when_native	✅ passed	39ms
test_deb_source.test_export_orig_invokes_gbp	✅ passed	40ms
test_debsign	✅ passed	15s 967ms
test_debuild.test_deb_control_file	✅ passed	3ms
test_debuild.test_build_debpackage	✅ passed	10s 954ms
test_debuild.test_deb_changes	✅ passed	3ms
test_debuild.test_deb_changes_files	✅ passed	3ms
test_debuild.test_deb_changes_name	✅ passed	2ms
test_debuild.test_deb_changes_version	✅ passed	2ms
test_debuild.test_deb_changes_arch	✅ passed	2ms
test_debuild.test_deb_changes_file_fallback_to_any_changes	✅ passed	4ms
test_debuild.test_deb_changes_file_prefers_newest_arch_match	✅ passed	14ms
test_debuild.test_install_build_dependencies_raises_when_mk_build_deps_missing	✅ passed	4ms
test_debuild.test_install_build_dependencies_builds_correct_command	✅ passed	4ms
test_debuild.test_install_build_dependencies_raises_on_nonzero_exit	✅ passed	4ms
test_gpg.test_create_gpg	✅ passed	8ms
test_gpg.test_list_keys	✅ passed	22ms
test_gpg.test_create_and_set_new_keyring	✅ passed	11ms
test_gpg.test_import_key	✅ passed	60ms
test_gpg.test_signing_key	✅ passed	47ms
test_logging.test_debug_logged	✅ passed	2ms
test_logging.test_info_logged	✅ passed	2ms
test_logging.test_warning_logged	✅ passed	2ms
test_logging.test_critical_logged	✅ passed	2ms
test_logging.test_max_level_filter_accepts_info	✅ passed	1ms
test_logging.test_max_level_filter_rejects_warning	✅ passed	1ms
test_logging.test_handler_wiring_uses_max_level_filter	✅ passed	1ms
test_logging.test_stream_routing_with_caplog	✅ passed	2ms
test_logging.test_debug_suppressed_at_info_verbosity	✅ passed	2ms
test_logging.test_debug_visible_at_debug_verbosity	✅ passed	2ms
test_logging.test_warning_suppressed_at_warning_verbosity	✅ passed	2ms
test_utils.test_run_subprocess_success	✅ passed	5ms
test_utils.test_run_subprocess_failure	✅ passed	4ms
test_utils.test_run_streamed_logs_output	✅ passed	4ms
test_utils.test_run_subprocess_writes_stdin	✅ passed	4ms
test_utils.test_run_subprocess_stream	✅ passed	5ms
test_utils.test_run_subprocess_capture	✅ passed	4ms
test_utils.test_run_subprocess_silent	✅ passed	4ms
test_utils.test_run_subprocess_stdin	✅ passed	4ms
test_utils.test_run_subprocess_empty_stdin_still_opens_pipe	✅ passed	4ms
test_utils.test_run_subprocess_handles_broken_pipe_and_raises_calledprocesserror	✅ passed	4ms
test_utils.test_run_subprocess_forwards_sigint_on_keyboardinterrupt	✅ passed	8ms

• View JUnit Test Report

[github-actions]

☂️ Code Coverage

current status: ✅

Overall Coverage

Statements	Covered	Coverage	Threshold	Status
1718	1380	80%	0%	🟢

New Files

No new covered files...

Modified Files

No covered modified files...

updated for commit: 98923ad by action🐍

[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %	⏱️ Duration
7	0	0	7	100	27.743592999s

Passed Tests

Name	⏱️ Duration	Suite
Debhello Quilt Build	16.674 s	Debhello Quilt
Binary Packages Are Valid	0.543 s	Debhello Quilt
Changes File Is Signed	0.207 s	Debhello Quilt
Binary Package Is Installable	2.786 s	Debhello Quilt
Source Package Is Valid	0.428 s	Debhello Quilt
DSC File Is Signed	0.199 s	Debhello Quilt
Source Package Is Installable	6.907 s	Debhello Quilt