# Agent Guardrails (NDC_1C)

## Scope
This repository has two assistant lanes:
- `address_query` for fast factual MCP lookups.
- deep/canonical normalizer lane for heavy analysis.

Do not route plain address lookups to deep lane when an address fallback is possible.

## Encoding Policy (Mandatory)
To prevent recurring mojibake (`Р...`, `С...`) issues:

1. Use UTF-8 for all source and exported text artifacts.
2. When reading or writing text in PowerShell, always set encoding explicitly (`-Encoding utf8`).
3. For MCP/live payloads, normalize potentially broken UTF-8/CP1251 strings before matching/filtering.
4. Never store business-specific names in static normalization dictionaries.
   - Use runtime anchor resolution from live rows.
5. Before finishing a change touching assistant text/debug/export:
   - run tests that cover conversation export and address runtime,
   - verify no new mojibake markers in changed files.

## Address Runtime Rules
1. MSP/MCP-first. Snapshots are fallback only.
2. `false_factual_rate` must remain `0`.
3. For short follow-ups with loose anchor form (`по <anchor>`), keep in address lane.
4. If factual result is unavailable, return operational limited reason, never hallucinate.