developer-experience

name	developer-experience
description	Improve contributor inner loops, onboarding, local setup ergonomics, and fast feedback without absorbing CI, deployment, or runtime operations.

Developer Experience

Use this pack as a bounded planned adjacent surface after ../../reference/routing-matrix.md points here for contributor-facing workflow work: onboarding, local setup contracts, repo ergonomics, package and workspace conventions, fast feedback loops, and review norms that shape the pre-merge inner loop.

This pack keeps the local developer path explicit, fast, and debuggable once the dominant route is already chosen. It is not the primary place to discover adjacent-pack routing, helper fit, or support posture, so send that first pass back to ../../reference/routing-matrix.md. Use the overlays in reference/package-managers-monorepos.md and reference/local-dev-environments.md when workspace shape, toolchain constraints, local services, or environment setup details dominate the task, and keep CI, deployment, and runtime ownership with devops-platform.

For setup posture, prefer refining an existing project in place. Treat direct create / init / new flows as greenfield-only and use them only when explicitly requested. Defer the full setup policy to ../../reference/project-setup-policy.md.

Core focus

• Reduce time from clone to first successful local change.
• Make setup prerequisites, toolchain versions, scripts, and environment expectations explicit.
• Keep workspace, dependency, and task-runner behavior readable across repos and monorepos.
• Optimize pre-merge feedback loops for lint, typecheck, tests, local preview, and debugging.
• Improve review handoff, contributor guidance, and friction reporting without inventing a separate ops layer.

Shared standards

• Treat the local dev contract as a product surface: required versions, bootstrap commands, environment files, and local services should be easy to discover and repeat.
• Prefer one clear package-manager and lockfile story per repo or workspace; mixed installers and hidden fallbacks create support debt fast.
• Keep root scripts, package scripts, workspace tasks, and cache behavior predictable so contributors know where to run checks and why.
• Make feedback loops incremental when possible: narrow tasks, fast smoke checks, and reusable setup steps should come before heavyweight full-repo commands.
• Capture setup friction in docs or scripts while it is fresh instead of relying on reviewer memory or tribal knowledge.

Default workflow

1. Read ../../reference/routing-matrix.md first so planned-adjacent routing, helper discovery, and non-primary positioning come from the matrix instead of this pack.
2. Inspect current contributor friction: prerequisites, setup steps, workspace layout, local services, and slow feedback loops.
3. Choose the relevant overlay: reference/package-managers-monorepos.md for workspace and toolchain shape, or reference/local-dev-environments.md for environment bootstrap and parity concerns.
4. Make the local contract explicit through scripts, version managers, environment examples, and contributor-facing instructions before optimizing edge cases.
5. Shorten the inner loop for the highest-frequency tasks first: install, run, test, lint, typecheck, and basic debugging.
6. Run review-work after substantial developer-experience changes.

Collaboration in this repo

• Use Explore before editing so local setup scripts, workspace rules, and contributor docs match existing repo conventions.
• Use Librarian or Context7 when package-manager, workspace, or local environment tooling details need a source-of-truth check.
• Treat this pack as planned and non-primary for routing discovery, and defer adjacent-pack choice or helper selection back to ../../reference/routing-matrix.md.
• Pair with devops-platform when local development depends on containers, seeded services, or environment parity, but keep contributor ergonomics as the primary outcome.
• Pair with documentation-sdk when onboarding, command docs, or examples need to become durable reference material.

Overlays

• reference/package-managers-monorepos.md for workspace boundaries, lockfile and package-manager choices, task orchestration, and monorepo ergonomics.
• reference/local-dev-environments.md for prerequisites, environment files, local services, containerized dev setups, seeded data, and cross-platform setup friction.

Guardrails

• Do not let this pack absorb CI, deployment, or runtime-operations ownership.
• Do not hide setup rules in tribal knowledge, one-off shell steps, or reviewer folklore.
• Do not let this planned adjacent pack read like a primary routing or support surface.
• Do not optimize one local machine shape while leaving the repo-wide contributor contract implicit.