feat(security): add security plugin for container vulnerability analysis

Add security plugin that integrates with container-grade-reporter tool
to provide vulnerability grade assessment for Red Hat container images.

Features:
- /security:image-grades: Generate CVE vulnerability grade reports
- /security:set-image-grade-tool-path: Configure tool location
- Multi-architecture support (amd64, arm64, ppc64le, s390x)
- Grade filtering and email reporting capabilities
- Integration with Red Hat Pyxis API via Kerberos authentication

New files:
- plugins/security/commands/image-grades.md
- plugins/security/commands/set-image-grade-tool-path.md
- plugins/security/skills/container-grade-reporter/SKILL.md
- plugins/security/README.md
- plugins/security/.claude-plugin/plugin.json

Bug fixes:
- Fix synopsis extraction regex in build-website.py

Assisted-by: Claude

Author: rafaelvzago

.claude-plugin/marketplace.json

@@ -39,6 +39,11 @@
       "source": "./plugins/session",
       "description": "A plugin for Claude session management and persistence"
     },
+    {
+      "name": "security",
+      "source": "./plugins/security",
+      "description": "CVE analysis and container image vulnerability scanning for Red Hat ecosystem"
+    },
     {
       "name": "utils",
       "source": "./plugins/utils",

PLUGINS.md

@@ -14,6 +14,7 @@ This document lists all available Claude Code plugins and their commands in the
 - [Olm](#olm-plugin)
 - [Openshift](#openshift-plugin)
 - [Prow Job](#prow-job-plugin)
+- [Security](#security-plugin)
 - [Session](#session-plugin)
 - [Utils](#utils-plugin)
 - [Yaml](#yaml-plugin)
@@ -164,6 +165,16 @@ A plugin to analyze and inspect Prow CI job results
 
 See [plugins/prow-job/README.md](plugins/prow-job/README.md) for detailed documentation.
 
+### Security Plugin
+
+Container vulnerability grade reporting using container-grade-reporter tool
+
+**Commands:**
+- **`/security:image-grades` `<config.yaml> [--grade <grades>] [--email]`** - Generate container vulnerability grade report using container-grade-reporter
+- **`/security:set-image-grade-tool-path` `<path>`** - Configure the path to container-grade-reporter tool
+
+See [plugins/security/README.md](plugins/security/README.md) for detailed documentation.
+
 ### Session Plugin
 
 A plugin to save and resume conversation sessions across long time intervals

docs/data.json

@@ -289,6 +289,33 @@
       "skills": [],
       "has_readme": true
     },
+    {
+      "name": "security",
+      "description": "CVE analysis and container image vulnerability scanning for Red Hat ecosystem",
+      "version": "0.1.0",
+      "commands": [
+        {
+          "name": "image-grades",
+          "description": "Generate container vulnerability grade report using container-grade-reporter",
+          "synopsis": "/security:image-grades <config.yaml> [--grade <grades>] [--email]",
+          "argument_hint": "<config.yaml> [--grade <grades>] [--email]"
+        },
+        {
+          "name": "set-image-grade-tool-path",
+          "description": "Configure the path to container-grade-reporter tool",
+          "synopsis": "/security:set-image-grade-tool-path <path>",
+          "argument_hint": "<path>"
+        }
+      ],
+      "skills": [
+        {
+          "name": "Container Grade Reporter Integration",
+          "id": "container-grade-reporter",
+          "description": "Integration guide for using the container-grade-reporter tool to fetch and process container vulnerability grades"
+        }
+      ],
+      "has_readme": true
+    },
     {
       "name": "utils",
       "description": "A generic utilities plugin serving as a catch-all for various helper commands",

plugins/security/.claude-plugin/plugin.json

@@ -0,0 +1,9 @@
+{
+  "_comment": "Generated by Claude",
+  "name": "security",
+  "description": "Container vulnerability grade reporting using container-grade-reporter tool",
+  "version": "0.1.0",
+  "author": {
+    "name": "github.com/openshift-eng"
+  }
+}