feat(marketplace): add 6 missing standalone plugins — total 22→28

Added to marketplace:
- a11y-audit (WCAG 2.2 accessibility audit)
- executive-mentor (adversarial thinking partner)
- docker-development (Dockerfile, compose, multi-stage)
- helm-chart-builder (Helm chart scaffolding)
- terraform-patterns (IaC module design)
- research-summarizer (structured research synthesis)

Also fixed version 1.0.0 → 2.1.2 on 4 plugin.json files
(executive-mentor, docker-development, helm-chart-builder, research-summarizer)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -441,6 +441,111 @@
         "optimization"
       ],
       "category": "development"
+    },
+    {
+      "name": "a11y-audit",
+      "source": "./engineering-team/a11y-audit",
+      "description": "WCAG 2.2 accessibility audit and fix for React, Next.js, Vue, Angular, Svelte, and HTML. Static scanner detecting 20+ violation types, contrast checker with suggest mode, framework-specific fix patterns, /a11y-audit slash command.",
+      "version": "2.1.2",
+      "author": {
+        "name": "Alireza Rezvani"
+      },
+      "keywords": [
+        "accessibility",
+        "a11y",
+        "wcag",
+        "aria",
+        "screen-reader",
+        "contrast",
+        "keyboard-navigation"
+      ],
+      "category": "development"
+    },
+    {
+      "name": "executive-mentor",
+      "source": "./c-level-advisor/executive-mentor",
+      "description": "Adversarial thinking partner for founders and executives. Stress-tests plans, prepares for board meetings, navigates hard calls, runs postmortems. 5 sub-skills with slash commands.",
+      "version": "2.1.2",
+      "author": {
+        "name": "Alireza Rezvani"
+      },
+      "keywords": [
+        "executive",
+        "mentor",
+        "stress-test",
+        "board-prep",
+        "founder",
+        "leadership"
+      ],
+      "category": "leadership"
+    },
+    {
+      "name": "docker-development",
+      "source": "./engineering/docker-development",
+      "description": "Docker and container development — Dockerfile optimization, docker-compose orchestration, multi-stage builds, security hardening, and CI/CD container pipelines.",
+      "version": "2.1.2",
+      "author": {
+        "name": "Alireza Rezvani"
+      },
+      "keywords": [
+        "docker",
+        "container",
+        "dockerfile",
+        "docker-compose",
+        "devops"
+      ],
+      "category": "development"
+    },
+    {
+      "name": "helm-chart-builder",
+      "source": "./engineering/helm-chart-builder",
+      "description": "Helm chart development — chart scaffolding, values design, template patterns, dependency management, and Kubernetes deployment strategies.",
+      "version": "2.1.2",
+      "author": {
+        "name": "Alireza Rezvani"
+      },
+      "keywords": [
+        "helm",
+        "kubernetes",
+        "k8s",
+        "chart",
+        "deployment"
+      ],
+      "category": "development"
+    },
+    {
+      "name": "terraform-patterns",
+      "source": "./engineering/terraform-patterns",
+      "description": "Terraform infrastructure-as-code — module design patterns, state management, provider configuration, CI/CD integration, and multi-environment strategies.",
+      "version": "2.1.2",
+      "author": {
+        "name": "Alireza Rezvani"
+      },
+      "keywords": [
+        "terraform",
+        "iac",
+        "infrastructure",
+        "devops",
+        "cloud"
+      ],
+      "category": "development"
+    },
+    {
+      "name": "research-summarizer",
+      "source": "./product-team/research-summarizer",
+      "description": "Structured research summarization — summarize academic papers, market research, user interviews, and competitive analysis into actionable insights.",
+      "version": "2.1.2",
+      "author": {
+        "name": "Alireza Rezvani"
+      },
+      "keywords": [
+        "research",
+        "summarization",
+        "analysis",
+        "insights",
+        "product"
+      ],
+      "category": "product"
     }
   ]
 }

c-level-advisor/executive-mentor/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "executive-mentor",
   "description": "Adversarial thinking partner for founders and executives. Stress-tests plans, prepares for board meetings, navigates hard decisions, and forces honest post-mortems.",
-  "version": "1.0.0",
+  "version": "2.1.2",
   "author": {
     "name": "Alireza Rezvani"
   },

engineering/docker-development/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "docker-development",
   "description": "Docker and container development agent skill and plugin for Dockerfile optimization, docker-compose orchestration, multi-stage builds, and container security hardening. Covers build performance, layer caching, and production-ready container patterns.",
-  "version": "1.0.0",
+  "version": "2.1.2",
   "author": {
     "name": "Alireza Rezvani",
     "url": "https://alirezarezvani.com"

engineering/helm-chart-builder/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "helm-chart-builder",
-  "description": "Helm chart development agent skill and plugin for Claude Code, Codex, Gemini CLI, Cursor, OpenClaw — chart scaffolding, values design, template patterns, dependency management, security hardening, and chart testing.",
-  "version": "1.0.0",
+  "description": "Helm chart development agent skill and plugin for Claude Code, Codex, Gemini CLI, Cursor, OpenClaw \u2014 chart scaffolding, values design, template patterns, dependency management, security hardening, and chart testing.",
+  "version": "2.1.2",
   "author": {
     "name": "Alireza Rezvani",
     "url": "https://alirezarezvani.com"

product-team/research-summarizer/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "research-summarizer",
   "description": "Structured research summarization agent skill and plugin for Claude Code, Codex, and Gemini CLI. Summarize academic papers, compare web articles, extract citations, and produce actionable research briefs.",
-  "version": "1.0.0",
+  "version": "2.1.2",
   "author": {
     "name": "Alireza Rezvani",
     "url": "https://alirezarezvani.com"