feat: add submitted skills review desk

skills/skill-rewriter/SKILL.md

@@ -0,0 +1,19 @@
+---
+name: skill-rewriter
+description: Rewrite an existing Agent Skill into a concise, safer, and more discoverable package while preserving its intended capability. Use after a skill review or when the user asks to improve a SKILL.md; do not alter original submissions in place without explicit approval.
+---
+
+# Skill rewriter
+
+Create a separate revised package so the author can compare it with the original. Retain domain-specific facts that are supported by the source; replace generic filler with decisions the agent would otherwise miss.
+
+## Rewrite flow
+
+1. Read the original package and any review brief. Keep its intended job and remove only unsupported assumptions, unsafe commands, or instructions that conflict with the requested boundary.
+2. Write valid frontmatter: a lowercase hyphenated name matching the folder and a description that states capability plus trigger terms.
+3. Use a short, friendly structure: Purpose, When to use, Inputs, Workflow, Rules, Output, and Verification. Omit headings that add no decision-making value.
+4. Move conditional detail to `references/`; add a script only for deterministic repeated work and name its prerequisites. Use paths relative to the skill root.
+5. Add concrete safety gates for mutation, credentials, and external systems. Never preserve a secret in the rewritten package.
+6. Validate the new package and give the author an end-to-end explanation of the changes and one next evaluation step.
+
+Read [the rewrite checklist](references/rewrite-checklist.md) for final checks.