feat: viral-readiness pass — plugin manifest, AGENTS.md, llms.txt, examples, issue templates

[Aboudjem]

Summary

• Score: 60 → 92 (Tier 3 → Tier 1) — only remaining gap is has_tests (pure-Markdown skill, no executable code; not faked)
• Adds .claude-plugin/plugin.json + marketplace.json so the skill is installable via claude plugin marketplace add Aboudjem/humanizer-skill
• Adds AGENTS.md (universal harness context, auto-discovered by 23 AI editors: Cursor, Copilot, Codex CLI, Windsurf, Gemini CLI, etc.)
• Adds llms.txt (LLM-citeability / RAG discoverability, H1 + blockquote + keyword-first sections)
• Adds examples/blog-post/ — annotated before/after reference case (score 87 → 11, 11 patterns documented)
• Adds .github/ISSUE_TEMPLATE/bug_report.md + feature_request.md
• Adds docs/VIRAL-AUDIT.md — engine score/tier/gap report with honest has_tests note
• Adds docs/LAUNCH-PLAN.md — June 2026 channel-sequenced launch plan (borrowed-reach-first, 13:00–16:00 UTC, r/ClaudeAI lead + X thread + dev.to)
• Sets GitHub topics (claude-code, claude-code-plugin, humanizer, ai-writing, writing-tools) and keyword-first description (≤160 chars)

Files added

.claude-plugin/plugin.json
.claude-plugin/marketplace.json
AGENTS.md
llms.txt
examples/blog-post/before.md
examples/blog-post/after.md
.github/ISSUE_TEMPLATE/bug_report.md
.github/ISSUE_TEMPLATE/feature_request.md
docs/VIRAL-AUDIT.md
docs/LAUNCH-PLAN.md

Engine feedback (for iteration log)

• Type detection (skill) and packaging recommendation (skill+plugin) are correct.
• One candidate false gap: has_tests is flagged HIGH for a pure-Markdown skill with no executable code. The rubric should conditionally skip or downweight this signal when repoType === "skill", or substitute a skill-specific check (e.g. presence of annotated examples/). The examples/blog-post/ added here is the closest functional equivalent.
• No other false gaps observed.

Test plan

• Re-run node /Users/adamboudj/projects/supernova/server/cli.js /path/to/humanizer-skill --json — confirm score ≥ 85 (Tier 1)
• Confirm claude plugin marketplace add Aboudjem/humanizer-skill resolves correctly
• Verify AGENTS.md is picked up by Claude Code on fresh project load
• Review docs/LAUNCH-PLAN.md before executing any launch steps