chore: sync indexes, update marketplace and docs for 4 new community skills

- Codex CLI: 182 skills, 4 new symlinks
- Gemini CLI: 274 items, 4 new
- engineering plugin.json: 36→38
- finance plugin.json: 2→3
- marketing plugin.json: 43→44
- marketplace.json: updated 3 bundle descriptions
- mkdocs.yml: 4 new nav entries
- docs/index.md + getting-started.md: domain counts updated
- 273 docs pages generated

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

.gemini/skills-index.json

@@ -1,7 +1,7 @@
 {
   "version": "1.0.0",
   "name": "gemini-cli-skills",
-  "total_skills": 270,
+  "total_skills": 274,
   "skills": [
     {
       "name": "README",
@@ -528,6 +528,11 @@
       "category": "engineering",
       "description": "Use when a security incident has been detected or declared and needs classification, triage, escalation path determination, and forensic evidence collection. Covers SEV1-SEV4 classification, false positive filtering, incident taxonomy, and NIST SP 800-61 lifecycle."
     },
+    {
+      "name": "init",
+      "category": "engineering",
+      "description": ">-"
+    },
     {
       "name": "migrate",
       "category": "engineering",
@@ -643,26 +648,21 @@
       "category": "engineering",
       "description": "Security engineering toolkit for threat modeling, vulnerability analysis, secure architecture, and penetration testing. Includes STRIDE analysis, OWASP guidance, cryptography patterns, and security scanning tools. Use when the user asks about security reviews, threat analysis, vulnerability assessments, secure coding practices, security audits, attack surface analysis, CVE remediation, or security best practices."
     },
-    {
-      "name": "skills-init",
-      "category": "engineering",
-      "description": ">-"
-    },
     {
       "name": "skills-review",
       "category": "engineering",
       "description": ">-"
     },
-    {
-      "name": "skills-status",
-      "category": "engineering",
-      "description": "Memory health dashboard showing line counts, topic files, capacity, stale entries, and recommendations."
-    },
     {
       "name": "snowflake-development",
       "category": "engineering",
       "description": "Use when writing Snowflake SQL, building data pipelines with Dynamic Tables or Streams/Tasks, using Cortex AI functions, creating Cortex Agents, writing Snowpark Python, configuring dbt for Snowflake, or troubleshooting Snowflake errors."
     },
+    {
+      "name": "status",
+      "category": "engineering",
+      "description": "Memory health dashboard showing line counts, topic files, capacity, stale entries, and recommendations."
+    },
     {
       "name": "stripe-integration-expert",
       "category": "engineering",
@@ -793,16 +793,16 @@
       "category": "engineering-advanced",
       "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. Use when: user wants to create or improve Helm charts, design values.yaml files, implement template helpers, audit chart security (RBAC, network policies, pod security), manage subcharts, or run helm lint/test."
     },
-    {
-      "name": "init",
-      "category": "engineering-advanced",
-      "description": "Create a new AgentHub collaboration session with task, agent count, and evaluation criteria."
-    },
     {
       "name": "interview-system-designer",
       "category": "engineering-advanced",
       "description": "This skill should be used when the user asks to \"design interview processes\", \"create hiring pipelines\", \"calibrate interview loops\", \"generate interview questions\", \"design competency matrices\", \"analyze interviewer bias\", \"create scoring rubrics\", \"build question banks\", or \"optimize hiring systems\". Use for designing role-specific interview loops, competency assessments, and hiring calibration systems."
     },
+    {
+      "name": "llm-cost-optimizer",
+      "category": "engineering-advanced",
+      "description": "Use when you need to reduce LLM API spend, control token usage, route between models by cost/quality, implement prompt caching, or build cost observability for AI features. Triggers: 'my AI costs are too high', 'optimize token usage', 'which model should I use', 'LLM spend is out of control', 'implement prompt caching'. NOT for RAG pipeline design (use rag-architect). NOT for prompt writing quality (use senior-prompt-engineer)."
+    },
     {
       "name": "loop",
       "category": "engineering-advanced",
@@ -843,6 +843,11 @@
       "category": "engineering-advanced",
       "description": "Use when the user asks to review pull requests, analyze code changes, check for security issues in PRs, or assess code quality of diffs."
     },
+    {
+      "name": "prompt-governance",
+      "category": "engineering-advanced",
+      "description": "Use when managing prompts in production at scale: versioning prompts, running A/B tests on prompts, building prompt registries, preventing prompt regressions, or creating eval pipelines for production AI features. Triggers: 'manage prompts in production', 'prompt versioning', 'prompt regression', 'prompt A/B test', 'prompt registry', 'eval pipeline'. NOT for writing or improving individual prompts (use senior-prompt-engineer). NOT for RAG pipeline design (use rag-architect). NOT for LLM cost reduction (use llm-cost-optimizer)."
+    },
     {
       "name": "rag-architect",
       "category": "engineering-advanced",
@@ -861,7 +866,7 @@
     {
       "name": "run",
       "category": "engineering-advanced",
-      "description": "Run a single experiment iteration. Edit the target file, evaluate, keep or discard."
+      "description": "One-shot lifecycle command that chains init \u2192 baseline \u2192 spawn \u2192 eval \u2192 merge in a single invocation."
     },
     {
       "name": "runbook-generator",
@@ -898,16 +903,26 @@
       "category": "engineering-advanced",
       "description": "Skill Tester"
     },
+    {
+      "name": "skills-init",
+      "category": "engineering-advanced",
+      "description": "Create a new AgentHub collaboration session with task, agent count, and evaluation criteria."
+    },
     {
       "name": "skills-run",
       "category": "engineering-advanced",
-      "description": "One-shot lifecycle command that chains init \u2192 baseline \u2192 spawn \u2192 eval \u2192 merge in a single invocation."
+      "description": "Run a single experiment iteration. Edit the target file, evaluate, keep or discard."
     },
     {
       "name": "skills-status",
       "category": "engineering-advanced",
       "description": "Show DAG state, agent progress, and branch status for an AgentHub session."
     },
+    {
+      "name": "skills-status",
+      "category": "engineering-advanced",
+      "description": "Show experiment dashboard with results, active loops, and progress."
+    },
     {
       "name": "spawn",
       "category": "engineering-advanced",
@@ -923,11 +938,6 @@
       "category": "engineering-advanced",
       "description": "Use when the user asks to write SQL queries, optimize database performance, generate migrations, explore database schemas, or work with ORMs like Prisma, Drizzle, TypeORM, or SQLAlchemy."
     },
-    {
-      "name": "status",
-      "category": "engineering-advanced",
-      "description": "Show experiment dashboard with results, active loops, and progress."
-    },
     {
       "name": "tech-debt-tracker",
       "category": "engineering-advanced",
@@ -938,6 +948,11 @@
       "category": "engineering-advanced",
       "description": "Terraform infrastructure-as-code agent skill and plugin for Claude Code, Codex, Gemini CLI, Cursor, OpenClaw. Covers module design patterns, state management strategies, provider configuration, security hardening, policy-as-code with Sentinel/OPA, and CI/CD plan/apply workflows. Use when: user wants to design Terraform modules, manage state backends, review Terraform security, implement multi-region deployments, or follow IaC best practices."
     },
+    {
+      "name": "business-investment-advisor",
+      "category": "finance",
+      "description": "Business investment analysis and capital allocation advisor. Use when evaluating whether to invest in equipment, real estate, a new business, hiring, technology, or any capital expenditure. Also use for ROI calculations, IRR, NPV, payback period, build vs buy decisions, lease vs buy analysis, vendor evaluation, or deciding where to allocate limited budget for maximum return."
+    },
     {
       "name": "finance-bundle",
       "category": "finance",
@@ -1168,6 +1183,11 @@
       "category": "marketing",
       "description": "When the user wants to develop social media strategy, plan content calendars, manage community engagement, or grow their social presence across platforms. Also use when the user mentions 'social media strategy,' 'social calendar,' 'community management,' 'social media plan,' 'grow followers,' 'engagement rate,' 'social media audit,' or 'which platforms should I use.' For writing individual social posts, see social-content. For analyzing social performance data, see social-media-analyzer."
     },
+    {
+      "name": "video-content-strategist",
+      "category": "marketing",
+      "description": "Use when planning video content strategy, writing video scripts, optimizing YouTube channels, building short-form video pipelines (Reels, TikTok, Shorts), or repurposing long-form content into video. Triggers: 'start a YouTube channel', 'video content strategy', 'write a video script', 'repurpose into video', 'YouTube SEO', 'short-form video'. NOT for written blog content (use content-production). NOT for social captions without video (use social-media-manager)."
+    },
     {
       "name": "x-twitter-growth",
       "category": "marketing",
@@ -1376,15 +1396,15 @@
       "description": "Engineering resources"
     },
     "engineering-advanced": {
-      "count": 50,
+      "count": 52,
       "description": "Engineering-advanced resources"
     },
     "finance": {
-      "count": 3,
+      "count": 4,
       "description": "Finance resources"
     },
     "marketing": {
-      "count": 44,
+      "count": 45,
       "description": "Marketing resources"
     },
     "product": {

.gemini/skills/business-investment-advisor/SKILL.md

@@ -0,0 +1 @@
+../../../finance/business-investment-advisor/SKILL.md

.gemini/skills/init/SKILL.md

@@ -1 +1 @@
-../../../engineering/agenthub/skills/init/SKILL.md
+../../../engineering-team/playwright-pro/skills/init/SKILL.md

.gemini/skills/llm-cost-optimizer/SKILL.md

@@ -0,0 +1 @@
+../../../engineering/llm-cost-optimizer/SKILL.md

.gemini/skills/prompt-governance/SKILL.md

@@ -0,0 +1 @@
+../../../engineering/prompt-governance/SKILL.md

.gemini/skills/run/SKILL.md

@@ -1 +1 @@
-../../../engineering/autoresearch-agent/skills/run/SKILL.md
+../../../engineering/agenthub/skills/run/SKILL.md

.gemini/skills/skills-init/SKILL.md

@@ -1 +1 @@
-../../../engineering-team/playwright-pro/skills/init/SKILL.md
+../../../engineering/agenthub/skills/init/SKILL.md

.gemini/skills/skills-run/SKILL.md

@@ -1 +1 @@
-../../../engineering/agenthub/skills/run/SKILL.md
+../../../engineering/autoresearch-agent/skills/run/SKILL.md

.gemini/skills/skills-status/SKILL.md

@@ -1 +1 @@
-../../../engineering/agenthub/skills/status/SKILL.md
+../../../engineering/autoresearch-agent/skills/status/SKILL.md

.gemini/skills/status/SKILL.md

@@ -1 +1 @@
-../../../engineering/autoresearch-agent/skills/status/SKILL.md
+../../../engineering-team/self-improving-agent/skills/status/SKILL.md

.gemini/skills/video-content-strategist/SKILL.md

@@ -0,0 +1 @@
+../../../marketing-skill/video-content-strategist/SKILL.md