Architecture Decision Records (ADRs)

Compact records of significant design choices. Full rationale lives in DESIGN.md; each ADR captures the decision, consequences, and references.

Index

ADR	Title	Status
ADR-001	Provider registry (AWS / Azure / mock)	Accepted
ADR-002	Dual RAG engines: chain vs langgraph	Accepted
ADR-003	Opt-in web research	Accepted
ADR-004	RAGAS eval gating policy	Accepted

Template

New ADRs should follow this shape:

# ADR-NNN: Title

**Status:** Proposed | Accepted | Superseded
**Date:** YYYY-MM-DD

## Context
What problem or constraint drove the decision?

## Decision
What we chose.

## Consequences
Positive and negative outcomes.

## Alternatives considered
What we did not choose and why.

## References
Links to code and docs.