feat: vendorizar as 10 skills do pilar de seguranca em skills/

Copia local (nao fork, nao submodule) de safedeps, sca-audit,
secrets-scan, code-review-security, api-security-review,
web-security-review, cve-triage, patch-prioritization,
dependency-scanning e hermaguard -- commit exato de origem e licenca
de cada uma em skills/NOTICE.md. Elimina o passo de clone externo
pro pilar de seguranca do wf-security-review: git clone deste repo
ja traz tudo funcional.

Corrige tambem o comando de instalacao pro Claude Code nos dois
READMEs e no docs/SKILLS.md: Claude Code exige um diretorio por
skill (skills/<nome>/SKILL.md), nao aceita os .md soltos que o
comando antigo copiava -- confirmado testando a instalacao real.

skills/hermaguard/hermaguard_tools/__init__.py

@@ -0,0 +1,8 @@
+"""hermaguard_tools — package shim that exposes the flat hermaguard tools as
+importable modules with console-script entry points.
+
+The tools live as standalone scripts under tools/ (each is self-contained,
+stdlib-only, runnable without install). This package locates them at runtime
+— from the source checkout, or from the package-data copy when installed via
+pip — and exposes each tool's `main` function as a clean console script.
+"""