seo: add plugin/skill guides for Claude Code, Codex, Gemini CLI, Cursor + autoresearch program

.autoresearch/seo/skill-descriptions/program.md

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+# Experiment: Skill Description SEO Optimization
+
+## Objective
+Optimize the `description` field in each skill's SKILL.md frontmatter to maximize:
+1. **SEO discoverability** — include high-volume keywords: "agent skill", "plugin", "Claude Code", "Codex", "Gemini CLI", "Cursor"
+2. **Trigger accuracy** — the description must accurately describe when the skill activates
+3. **Clarity** — one read should convey what the skill does and who it's for
+4. **Cross-platform appeal** — mention multi-tool compatibility where natural
+
+## Constraints
+- Description must be under 200 characters (plugin.json limit)
+- Must NOT be spammy or keyword-stuffed — natural language only
+- Must preserve the skill's actual purpose and capabilities
+- Do NOT modify anything outside the `description:` field in frontmatter
+- One skill per experiment iteration
+
+## Strategy
+- Start with the top 10 most-viewed skills (from GitHub traffic)
+- For each: read current description → rewrite with SEO keywords → evaluate
+- Terms to naturally incorporate: "agent skill", "plugin", "coding agent", tool names
+- Avoid: generic filler, "AI-powered", "comprehensive solution"
+
+## Target Skills (in priority order)
+1. marketing-skill/SKILL.md (all sub-skills)
+2. engineering-team/SKILL.md (all sub-skills)  
+3. engineering/SKILL.md (all sub-skills)
+4. c-level-advisor/SKILL.md (all sub-skills)
+5. finance/SKILL.md (all sub-skills)
+6. business-growth/SKILL.md (all sub-skills)
+7. product-team/SKILL.md (all sub-skills)
+8. project-management/SKILL.md (all sub-skills)
+
+## Evaluation
+Use llm_judge_content evaluator customized for SEO scoring.
+Metric: seo_quality_score (0-100)
+Direction: higher is better