docs: add full-depth plugin review (2026-06-20)

Grade A — no attack surface, no findings. Part of the marketplace-wide review (config-audit v5.4.0 + llm-security + structure + version). Read-only; this file is the only artifact.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ter3E2JSi1Khgmuf2kady8

docs/review-2026-06-20.md

@@ -0,0 +1,29 @@
+# Plugin review — human-friendly-style (2026-06-20)
+
+> Full-depth review (part of the marketplace-wide sweep; pilot was okr). Tooling: config-audit
+> v5.4.0 scanners (from source) + llm-security posture assessor + structure/version checks.
+> Read-only; this file is the only artifact.
+
+## Verdict
+
+**Clean, grade A — essentially no attack surface.** A metadata-only manifest plus one output-style
+markdown; no commands, agents, skills, hooks, MCP, or dependencies. Nothing actionable.
+
+## Results by dimension
+
+| Dimension | Result |
+|-----------|--------|
+| config-audit posture | **A** (Feature Coverage F 17 — expected: an output-style uses almost no CC features; opportunity, not a defect) |
+| config-audit plugin-health | **0 findings** |
+| llm-security posture | **A** — no findings (1 INFO). The only real vector (an output-style edits the system prompt) was reviewed line-by-line + byte-scanned: tone-only, `keep-coding-instructions: true`, no hidden/encoded/scope-expanding directives. Hidden-char scan clean (only em-dashes). |
+| structure / hygiene | README ✓, CHANGELOG ✓, CLAUDE.md ✓, LICENSE ✓ |
+| version consistency | **OK** (gate) |
+
+## Findings
+
+- **INFO** — `output-styles/human-friendly.md:21-27` — hide-by-default directives reduce visibility
+  into routine tool output. This is the stated purpose, reversible on request (L29), and carved out
+  for irreversible actions (L32-33). Not a defect; no remediation.
+
+The irreversible-action carve-out (forces verbatim display of destructive commands) is a net
+security positive.