v1.11.6

Test coverage for custom preset flow

Adds comprehensive E2E and Go integration tests for the --preset custom installation flow that was previously untested.

E2E tests (bash, Docker)

• test_dry_run_preset_custom — dry-run shows custom preset
• test_preset_custom_no_components — no components with custom + no flags
• test_preset_custom_explicit_components — explicit --component flags work
• test_cc_custom_skills_with_flag — --skills flag installs only specified skills
• test_cc_custom_no_skills_flag_installs_nothing — skills component without --skills = SDD deps only
• test_cc_custom_sdd_plus_skills — SDD + explicit skills coexist correctly

Go integration tests

• TestRunInstallCustomPresetNoComponentsIsNoop
• TestRunInstallCustomPresetExplicitSkillsFlagPopulatesSelection
• TestRunInstallCustomPresetSkillsNoFlagInstallsNothing
• TestRunInstallCustomPresetDryRunShowsCustomPreset
• TestRunInstallCustomPresetExplicitComponentsResolveCorrectly