fix: integrate recent hook and docs PRs (#1905)

Integrates useful changes from #1882, #1884, #1889, #1893, #1898, #1899, and #1903:
- fix rule install docs to preserve language directories
- correct Ruby security command examples
- harden dev-server hook command-substitution parsing
- add Prisma patterns skill and catalog/package surfaces
- allow first-time protected config creation while blocking existing configs
- read cost metrics from Stop hook transcripts
- emit suggest-compact additionalContext on stdout

Co-authored-by: Jamkris <dltmdgus1412@gmail.com>
Co-authored-by: Levi-Evan <levishantz@gmail.com>
Co-authored-by: gaurav0107 <gauravdubey0107@gmail.com>
Co-authored-by: richm-spp <richard.millar@salarypackagingplus.com.au>
Co-authored-by: zomia <zomians@outlook.jp>
Co-authored-by: donghyeun02 <donghyeun02@gmail.com>

AGENTS.md

@@ -1,6 +1,6 @@
 # Everything Claude Code (ECC) — Agent Instructions
 
-This is a **production-ready AI coding plugin** providing 60 specialized agents, 228 skills, 75 commands, and automated hook workflows for software development.
+This is a **production-ready AI coding plugin** providing 60 specialized agents, 229 skills, 75 commands, and automated hook workflows for software development.
 
 **Version:** 2.0.0-rc.1
 
@@ -150,7 +150,7 @@ Troubleshoot failures: check test isolation → verify mocks → fix implementat
 
 ```
 agents/          — 60 specialized subagents
-skills/          — 228 workflow skills and domain knowledge
+skills/          — 229 workflow skills and domain knowledge
 commands/        — 75 slash commands
 hooks/           — Trigger-based automations
 rules/           — Always-follow guidelines (common + per-language)