# AD-468 Build Report

**Date:** 2026-05-01
**Status:** Complete

## Files Changed

- `src/probos/runtime_config_service.py` (new, 175 lines, stdlib JSON only)
- `src/probos/runtime.py` (+5, public `data_dir` property)
- `src/probos/proactive.py` (+9, public `set_cycle_interval` + `set_cooldown` setters)
- `src/probos/events.py` (+1, CONFIG_CHANGED)
- `src/probos/config.py` (+8, RuntimeOverridesConfig)
- `src/probos/startup/finalize.py` (+30, wiring + override application)
- `src/probos/experience/commands/commands_config.py` (new, 65 lines)
- `src/probos/experience/shell.py` (+2, import + handler)
- `tests/test_ad468_runtime_configuration.py` (new, 14 tests)
- `PROGRESS.md` (+2)
- `docs/development/roadmap.md` (status flip + .toml→.json fix)

## Sections Implemented

- Section 0: CONFIG_CHANGED EventType ✓
- Section 1a: `runtime.data_dir` public property ✓
- Section 1b: `set_cycle_interval` + `set_cooldown` setters ✓
- Section 1: RuntimeConfigService (stdlib JSON) ✓
- Section 2: EventType added ✓
- Section 3: RuntimeOverridesConfig + SystemConfig wiring ✓
- Section 4: finalize.py wiring with public-setter overrides ✓
- Section 5: /config slash command + shell handler wiring ✓

## Engineering Principles Compliance

- ✓ Demeter: public `data_dir` property, public setters on ProactiveCognitiveLoop, public `runtime_config_service`
- ✓ Stdlib only — no `tomli-w` dependency added
- ✓ Type annotations on all public methods
- ✓ Pydantic config field with default
- ✓ emit-failure log-and-degrade pattern

## Test Results

`pytest tests/test_ad468_runtime_configuration.py -v -n 0` → 14 passed in 0.42s.
