dx-harness

Developer-experience friction auditing and fixing — slow onboarding, repeated manual setup steps, missing bootstrap/reset/seed scripts, undiscoverable conventions. Audits the repo, scores findings, scaffolds canonical fixes (bootstrap.sh, reset.sh, seed.sh, AGENTS.md, task-runner entries), then verifies the harness end-to-end in a scratch worktree against a 60-second time-to-first-commit target. Triggers on phrases like "audit dx", "fix dev friction", "time to first commit", "set up the harness", "I keep doing X manually", "every time I reset the db I have to...", and on new-repo bootstrapping. Even if the user doesn't say "DX" — if they describe a repeated manual chore in their dev loop, this skill applies.

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Repository: pproenca/dot-skills
Letzte Quellaktivität: 5. Juli 2026 um 07:23
Erkannte Sprache von SKILL.md: Englisch
Sterne: 193
Forks: 17

Installationsoptionen

Standardmäßig ist der Prompt ausgewählt, der zuerst die Quelle prüft. Sie können zu einem direkten Befehl wechseln oder eine lokale Kopie herunterladen.

Mit Codex oder Claude installieren Kopieren Sie diesen Prompt, fügen Sie ihn in Codex, Claude oder einen anderen Assistant ein und lassen Sie die Skill-Seite prüfen und installieren.

Ein direkter Befehl überspringt den Prüf-Prompt. Prüfen Sie die Quelle, bevor Sie ihn ausführen.

npx skills add https://github.com/pproenca/dot-skills --skill dx-harness

Der Befehl bleibt in einer Zeile. Scrollen Sie horizontal, um ihn vor dem Kopieren vollständig zu prüfen.

Sie bevorzugen eine lokale Kopie? Laden Sie die Dateien herunter, die SkillsMP derzeit vorliegen.

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Lesen Sie SKILL.md und alle von SkillsMP angezeigten Begleitdateien, bevor Sie sich für eine Installation entscheiden.

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27 Dateien

SKILL.md

Quellanweisungen · Schreibgeschützte Vorschau

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drizzle-nextjs-postgres

Drizzle ORM against PostgreSQL inside a Next.js App Router app. Covers client construction (globalThis singleton across HMR, serverless pool sizing, `prepare:false` behind PgBouncer/Supavisor, driver choice when you need interactive transactions, `server-only`), reads in Server Components under Next.js 16 Cache Components (`use cache` superseding `unstable_cache` and the `revalidate`/`dynamic` segment configs, Suspense boundaries, React `cache()` dedupe), Server Actions (authorization inside the action, `updateTag` vs `revalidateTag`, `after()`), Postgres schema types (timestamptz, identity vs serial, jsonb, numeric-as-string, bigint modes), drizzle-kit migrations (generate vs push, CONCURRENTLY outside the migrator, NOT VALID constraints, rename prompts), transactions and pooled connections, and Postgres query traps (keyset pagination, count cost, driver-dependent `db.execute()` shape, NOT IN nulls, prepared statements). Use when writing or reviewing Drizzle + Postgres code in Next.js.

2026-07-24

relational-data-modeling

Corrects the wrong defaults a model has when designing a relational schema — the DDL decisions an experienced engineer makes differently. Use when creating or reviewing tables, migrations, ER models, or ORM schema definitions. Covers identity and keys (surrogate vs natural, identity vs serial, uuidv7, composite keys that make cross-tenant references impossible), relationships (polymorphic foreign keys the database cannot enforce, referential actions, unindexed FK columns, disjoint subtypes), invariants the engine can prove instead of application code (EXCLUDE, partial unique indexes, CHECK limits, deferrable cycles, NOT VALID), types (timestamptz, exact money, range types, enum vs lookup table), derived and encoded data (generated columns, JSONB as an escape hatch), and time (events vs in-place updates, soft-delete flags that silently disable constraints, temporal keys). NOT for query tuning, index selection for read paths, or connection pooling.

2026-07-23

relational-database-design

Distills a logical relational-database design methodology into rules an agent applies while designing or reviewing a schema. Covers the design sequence (mission → tables → fields → keys → relationships → business rules → views → integrity review), one-subject-per-table decomposition, atomic single-valued fields, candidate/primary/foreign keys, relationship types with deletion rules and participation, the four levels of data integrity, database-vs-application business rules, validation tables, views for derived data, and the flat-file / spreadsheet / RDBMS-driven antipatterns to avoid. The structure is logical and RDBMS-agnostic, and normalized by construction. Use when designing a new relational schema, reviewing or refactoring an existing one, resolving redundant or repeating data, choosing keys, modeling relationships, or deciding where a constraint belongs.

2026-07-23

Alle aus diesem Repository ansehen

DX Harness

Audits, scaffolds, and maintains the developer-experience harness of a repository. The harness is the meta-tooling that makes a dev loop fast: one-command bootstrap, one-command reset, one-command seed, discoverable conventions, agent-friendly entry points.

This skill exists because dev-experience attrition is real: harnesses rot, manual steps creep back in, conventions drift, and the cost is paid in micro-friction every day. The skill detects attrition systematically and applies canonical fixes.

When to Apply

Trigger this skill when:

A user describes a repeated manual chore ("every time I reset the db I have to re-register", "I always run these three commands before working")

A user mentions slow onboarding or asks "how do I get this running"

A new repo is being bootstrapped and needs a harness from day one

A user explicitly asks to audit DX or measure time-to-first-commit (TTFC)

A user asks to fix missing bootstrap/reset/seed scripts or AGENTS.md

A periodic maintenance pass is needed (e.g., after a release, after onboarding a new engineer)

Workflow Overview

┌────────────────────────────────────────────────────────────┐ │ 1. DISCOVER scripts/discover.sh → repo-fingerprint │ │ 2. AUDIT scripts/audit.sh → dx-audit.json │ │ 3. PRIORITIZE scripts/prioritize.sh → ranked findings │ │ 4. SCAFFOLD scripts/scaffold-*.sh → scratch dir │ │ 5. CONFIRM show diff to user; user picks what to apply│ │ 6. VERIFY scripts/verify.sh → assertions + timing │ │ 7. TRACK scripts/track-attrition.sh → audit log │ └────────────────────────────────────────────────────────────┘

DX Harness

When to Apply

Trigger this skill when:

A user describes a repeated manual chore ("every time I reset the db I have to re-register", "I always run these three commands before working")

A user mentions slow onboarding or asks "how do I get this running"

A new repo is being bootstrapped and needs a harness from day one

A user explicitly asks to audit DX or measure time-to-first-commit (TTFC)

A user asks to fix missing bootstrap/reset/seed scripts or AGENTS.md

A periodic maintenance pass is needed (e.g., after a release, after onboarding a new engineer)

Workflow Overview

Toolchain	Detection signal
npm/pnpm/yarn/bun	`package.json`, `pnpm-lock.yaml`, `yarn.lock`, `bun.lockb`
cargo	`Cargo.toml`
go modules	`go.mod`
Python (uv/poetry/pip)	`pyproject.toml`, `uv.lock`, `poetry.lock`, `requirements.txt`
just	`Justfile` or `justfile`
make	`Makefile`
docker compose	`docker-compose.yml`, `compose.yaml`
database (postgres)	`docker-compose.yml` services, `DATABASE_URL` env reference

File	Read When
references/workflow.md	Executing the workflow (always start here)
references/audit-checklist.md	Understanding what `audit.sh` checks and why
references/fix-recipes.md	Choosing which scaffold script applies for a finding
references/attrition-patterns.md	Reading git history for DX-rot signals

dx-harness

Installationsoptionen

Quelldateien prüfen

DX Harness

When to Apply

Workflow Overview

DX Harness

When to Apply

Workflow Overview

Tool Requirements

Risk Level

Setup

Quick Reference

Run a full audit + scaffold pass

Scaffold one specific harness piece

Verify the harness works end-to-end

Track attrition over time

How to Use

Gotchas

Related Skills

dx-harness

Quellinformationen

Installationsoptionen

Quelldateien prüfen

Mehr aus diesem Repository

Mehr aus diesem Repository

DX Harness

When to Apply

Workflow Overview

DX Harness

When to Apply

Workflow Overview

Tool Requirements

Risk Level

Setup

Quick Reference

Run a full audit + scaffold pass

Scaffold one specific harness piece

Verify the harness works end-to-end

Track attrition over time

How to Use

Gotchas

Related Skills