Architect

Evaluate the architecture: $ARGUMENTS

Step 1 — Read Current Architecture

Read every layer of the codebase (see Layers table in project config for the complete file list).

Step 2 — Evaluate Layer Boundaries

Check the dependency graph (see Layers in project config for layer → path mapping):

• Does any lower layer import from a higher layer?
• Are there circular imports?
• Is business logic leaking into route handlers?
• Is core/device logic leaking into the service layer?
• Are there god objects (classes doing too much)?

Step 3 — Evaluate Design Patterns

Review patterns in use and their appropriateness (see Design Patterns in project config):

• Is the primary protocol/interface sufficient? Does it need extending?
• Is the DI chain clean? Any circular dependencies?
• Is the current state storage sufficient? Need persistence?
• Is middleware the right layer for cross-cutting concerns?
• Is the factory pattern extensible for new implementations?
• Should state changes notify external systems?

Step 4 — Evaluate Scalability Concerns

• Multi-resource: Can the architecture support multiple external resources?
• Multi-user: Can it handle concurrent users with different permissions?
• Multi-instance: Can multiple API instances share state?
• Event-driven: Can it push state changes (WebSocket, SSE)?
• Persistence: Should state survive restarts?

Step 5 — Identify Technical Debt

• Code that works but is in the wrong layer
• Abstractions that are too tight or too loose
• Missing abstractions (repeated patterns not extracted)
• Configuration that should be dynamic but is static
• Tests that test implementation instead of behavior

Step 6 — Propose Improvements

For each improvement, evaluate:

• Impact: How much does this improve the codebase?
• Effort: How much work is required?
• Risk: What could break?
• Priority: Must-do / Should-do / Nice-to-have

Format:

### Proposal: <title>
**Impact:** High/Medium/Low
**Effort:** Small/Medium/Large
**Risk:** Low/Medium/High
**Priority:** Must/Should/Nice

**Current state:** <what exists now>
**Proposed state:** <what it should become>
**Migration path:** <how to get there safely>
**Files affected:** <list>

Step 7 — Architecture Decision Record

If a significant change is proposed, document it:

# ADR-<number>: <title>

## Status: Proposed / Accepted / Rejected

## Context
<why this decision is needed>

## Decision
<what we decided>

## Consequences
<positive and negative effects>

Rules

• Architecture changes MUST maintain backwards compatibility
• Never propose changes without migration paths
• Evaluate trade-offs explicitly — no "this is just better"
• Consider the team's current capacity and skill level
• Prefer incremental evolution over big-bang rewrites