Reference: Single-User Coding Pair Programmer

Architectural notes

Reference architecture for a single engineer using Claude Code as their
daily pair programmer.

Why these picks:
- Claude Code provides the harness primitives (skills, hooks, subagents,
  plugins) out of the box; no custom orchestration needed.
- Sonnet 4.6 as default; Opus 4.7 invoked via /fast or subagent for
  hard reasoning.
- pgvector keeps embeddings next to other project data in Postgres.
- promptfoo for CI-gated prompt regression tests.
- E2B for sandboxed execution of agent-written code.

Common gotchas:
- Skill spam: too many skills load too much context; curate aggressively.
- Hook misconfiguration can silently block tool calls.