# Preset: implement_feature

For agents implementing a new feature into `./src`, `./simulation`, or `./tests`. Adds the full testing set + the APP-subsystem directives (imgui, app-controller, architecture, rag-memory, mcp) on top of baseline. The agent loads the union; if the feature touches only one subsystem, the irrelevant APP directives are still useful as context.

## Inherits
baseline

## Directives to warm
Read each file below before any action.

- tdd_red_green_required: conductor/directives/tdd_red_green_required/v1.md
- test_must_fail_for_believed_reason: conductor/directives/test_must_fail_for_believed_reason/v1.md
- test_passing_immediately_proves_nothing: conductor/directives/test_passing_immediately_proves_nothing/v1.md
- test_narrow_not_kitchen_sink: conductor/directives/test_narrow_not_kitchen_sink/v1.md
- batch_verification_not_isolation: conductor/directives/batch_verification_not_isolation/v1.md
- fragile_test_in_batch_is_failing_test: conductor/directives/fragile_test_in_batch_is_failing_test/v1.md
- no_skip_markers_as_avoidance: conductor/directives/no_skip_markers_as_avoidance/v1.md
- ban_arbitrary_core_mocking: conductor/directives/ban_arbitrary_core_mocking/v1.md
- test_instantiation_not_mock_away: conductor/directives/test_instantiation_not_mock_away/v1.md
- adapt_test_mocks_to_production_api_change: conductor/directives/adapt_test_mocks_to_production_api_change/v1.md
- live_gui_poll_not_sleep: conductor/directives/live_gui_poll_not_sleep/v1.md
- live_gui_session_scoped_no_restart: conductor/directives/live_gui_session_scoped_no_restart/v1.md
- no_real_io_during_tests: conductor/directives/no_real_io_during_tests/v1.md
- enforce_no_real_toml_in_tests: conductor/directives/enforce_no_real_toml_in_tests/v1.md
- test_sandbox: conductor/directives/test_sandbox/v1.md
- workspace_paths: conductor/directives/workspace_paths/v1.md
- opt_in_integration_test_via_env_var_marker: conductor/directives/opt_in_integration_test_via_env_var_marker/v1.md
- deterministic_signal_endpoint_pattern: conductor/directives/deterministic_signal_endpoint_pattern/v1.md
- failure_message_actionable_not_vague: conductor/directives/failure_message_actionable_not_vague/v1.md
- three_tier_test_strategy_for_fragile_subsystems: conductor/directives/three_tier_test_strategy_for_fragile_subsystems/v1.md
- test_classification_via_import_presence: conductor/directives/test_classification_via_import_presence/v1.md
- surface_dirty_state_in_test_runner: conductor/directives/surface_dirty_state_in_test_runner/v1.md
- imscope_tuple_return_per_scope_override: conductor/directives/imscope_tuple_return_per_scope_override/v1.md
- imgui_scope_verification: conductor/directives/imgui_scope_verification/v1.md
- imgui_scope_entered_flag_for_no_op_return: conductor/directives/imgui_scope_entered_flag_for_no_op_return/v1.md
- ui_delegation_for_hot_reload: conductor/directives/ui_delegation_for_hot_reload/v1.md
- modal_explicit_opened_list_for_lifecycle: conductor/directives/modal_explicit_opened_list_for_lifecycle/v1.md
- view_composes_does_not_leak_into_theme_get_color: conductor/directives/view_composes_does_not_leak_into_theme_get_color/v1.md
- float_only_math_for_visual_transforms: conductor/directives/float_only_math_for_visual_transforms/v1.md
- controller_property_delegation_no_dual_state: conductor/directives/controller_property_delegation_no_dual_state/v1.md
- config_state_owner: conductor/directives/config_state_owner/v1.md
- reset_session_preserves_project_path: conductor/directives/reset_session_preserves_project_path/v1.md
- defer_heavy_sdk_imports_to_subprocess: conductor/directives/defer_heavy_sdk_imports_to_subprocess/v1.md
- defer_not_catch_for_native_crashes: conductor/directives/defer_not_catch_for_native_crashes/v1.md
- graceful_optional_dependency_degradation: conductor/directives/graceful_optional_dependency_degradation/v1.md
- submit_io_lazy_pool_recreation: conductor/directives/submit_io_lazy_pool_recreation/v1.md
- log_pruner_backoff_for_locked_files: conductor/directives/log_pruner_backoff_for_locked_files/v1.md
- undo_redo_100_snapshot_capacity: conductor/directives/undo_redo_100_snapshot_capacity/v1.md
- feature_flag_delete_to_turn_off: conductor/directives/feature_flag_delete_to_turn_off/v1.md
- runtime_config_flag_vs_test_env_var_gate: conductor/directives/runtime_config_flag_vs_test_env_var_gate/v1.md
- interceptor_activates_only_on_matching_shape: conductor/directives/interceptor_activates_only_on_matching_shape/v1.md
- quarantine_flag_the_engine_not_shared_types: conductor/directives/quarantine_flag_the_engine_not_shared_types/v1.md
- profile_first_optimize_second: conductor/directives/profile_first_optimize_second/v1.md
- state_visible_at_the_right_layer: conductor/directives/state_visible_at_the_right_layer/v1.md
- per_dimension_pick_dim_not_tool: conductor/directives/per_dimension_pick_dim_not_tool/v1.md
- cache_stable_to_volatile: conductor/directives/cache_stable_to_volatile/v1.md
- rag_six_rules: conductor/directives/rag_six_rules/v1.md
- knowledge_harvest_pattern: conductor/directives/knowledge_harvest_pattern/v1.md
- chroma_cache_path: conductor/directives/chroma_cache_path/v1.md
- per_conversation_scratch_dir: conductor/directives/per_conversation_scratch_dir/v1.md
- file_id_stable_across_rename: conductor/directives/file_id_stable_across_rename/v1.md
- meta_tooling_app_boundary_check: conductor/directives/meta_tooling_app_boundary_check/v1.md

## Notes
Engagement preset for the "implementing a new feature into ./src, ./simulation, or ./tests" op. Inherits baseline (57) + adds 23 TARGETED:testing + 14 APP:architecture + 6 APP:imgui + 3 APP:app-controller + 5 APP:rag-memory + 1 APP:mcp. Total: 109 directives + 4 non-directive context files (inherited). If the blob is too large for the context window, pass a smaller op-specific subset via `max_chars`.