Skill Library (mmap-guard)#

This repo is a pure Rust library crate (the safe mmap boundary). Only a lean
DAILY set of ECC skills loads by default; everything else is turned OFF in
.claude/settings.local.json to keep context clean.

OFF does not mean deleted. Every skill below is still installed and can be
invoked on demand with the Skill tool (e.g. Skill(skill="ecc:docker-patterns")).
This router exists so those skills remain discoverable by keyword.

DAILY (already loaded — no router needed)#

• rust-patterns, rust-testing — the crate itself
• git-workflow, github-ops — commits, PRs, mergify, release-plz, gh
• security-review — the unsafe boundary this crate encapsulates

LIBRARY — invoke on demand by keyword#

Rust adjacent (ordered by relevance to this crate)#

• memory safety / the unsafe boundary → systems-programming:memory-safety-patterns — the crate's whole reason to exist; reach for it before touching the single unsafe block in src/map.rs
• error handling on the failure paths → ecc:error-handling — the value proposition is returning io::Error gracefully instead of crashing: empty file, concurrent truncation (SIGBUS), permission denied, advisory-lock WouldBlock
• TDD discipline → ecc:tdd-workflow — the repo mandates write-tests-first; the proptest suites and fuzz/ targets that harden the boundary live under the DAILY rust-testing
• security audit / bounty → ecc:security-bounty-hunter, ecc:security-scan, ecc:safety-guard
• benchmark / perf → ecc:benchmark, ecc:benchmark-methodology, ecc:latency-critical-systems, ecc:data-throughput-accelerator
• architecture decisions → ecc:architecture-decision-records
• codebase onboarding / tour → ecc:codebase-onboarding, ecc:code-tour, ecc:repo-scan
• coding standards → ecc:coding-standards (marginal — the pedantic/nursery clippy config in Cargo.toml already enforces most of this in-repo)

No serde, clap, tokio, thiserror, or async in this crate (deps are just
memmap2 + fs4), so the Rust library skills for those are noise here.

Other languages (not present here, but installed)#

python, django, fastapi, laravel/php, golang, java/springboot/quarkus, kotlin,
swift/swiftui, cpp, csharp/dotnet, fsharp, perl, ruby, react/vue/nuxt/angular,
dart/flutter → ecc:<lang>-patterns, ecc:<lang>-testing, ecc:<lang>-security.

Web / frontend / design#

ecc:frontend-patterns, ecc:frontend-a11y, ecc:design-system,
ecc:motion-foundations / ecc:motion-advanced, ecc:accessibility,
ecc:make-interfaces-feel-better, ecc:taste.

Data / infra / cloud#

ecc:postgres-patterns, ecc:mysql-patterns, ecc:redis-patterns,
ecc:mongodb, ecc:prisma-patterns, ecc:database-migrations,
ecc:docker-patterns, ecc:kubernetes-patterns, ecc:deployment-patterns,
ecc:clickhouse-io.

Networking / homelab#

ecc:cisco-ios-patterns, ecc:netmiko-ssh-automation,
ecc:network-bgp-diagnostics, ecc:network-config-validation,
ecc:homelab-*.

Agent / harness / meta (ECC internals)#

ecc:configure-ecc, ecc:ecc-guide, ecc:skill-scout, ecc:skill-stocktake,
ecc:agent-sort, ecc:continuous-learning-v2, ecc:context-budget,
ecc:strategic-compact, ecc:eval-harness, ecc:autonomous-loops.

Domain / business ops#

healthcare, finance/billing, logistics/ito/carrier, marketing/brand/seo,
scientific databases, blockchain/defi, video/media — search the OFF list in
.claude/settings.local.json and invoke ecc:<name> directly.

Re-promoting a skill to DAILY#

If a LIBRARY skill becomes routine, flip its value from "off" to "on"
(or remove the entry) in .claude/settings.local.json → skillOverrides.