Add ThumbGate plugin — pre-action gates for AI coding agents

plugins/thumbgate/.claude-plugin/plugin.json

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+{
+  "name": "thumbgate",
+  "version": "1.5.0",
+  "description": "Pre-action gates for AI coding agents. Type 👎 on any agent action — ThumbGate captures it, distills a lesson, and blocks the pattern from repeating. 33 pre-action gates, budget enforcement, self-protection, and NIST/SOC2 compliance tags.",
+  "author": {
+    "name": "Igor Ganapolsky",
+    "url": "https://github.com/IgorGanapolsky"
+  },
+  "homepage": "https://thumbgate-production.up.railway.app",
+  "repository": "https://github.com/IgorGanapolsky/ThumbGate",
+  "license": "MIT",
+  "keywords": [
+    "pre-action-gates",
+    "ai-agent-safety",
+    "guardrails",
+    "mcp",
+    "memory",
+    "workflow-hardening",
+    "claude-code",
+    "cursor",
+    "copilot",
+    "destructive-action-prevention"
+  ],
+  "skills": "./skills/",
+  "mcpServers": {
+    "thumbgate": {
+      "command": "npx",
+      "args": ["--yes", "--package", "thumbgate", "thumbgate", "serve"]
+    }
+  }
+}

plugins/thumbgate/README.md

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+# ThumbGate
+
+Pre-action gates for AI coding agents. Catches destructive operations before they hit your codebase.
+
+- 33 pre-action gates
+- Thumbs up/down feedback loop
+- Budget enforcement
+- NIST/SOC2 compliance tags
+- Works with Claude Code, Cursor, Copilot
+
+## Install
+
+```bash
+npx thumbgate
+```
+
+## Links
+- [GitHub](https://github.com/IgorGanapolsky/ThumbGate)
+- [Website](https://thumbgate-production.up.railway.app)

plugins/thumbgate/skills/thumbgate/SKILL.md

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+# ThumbGate — Pre-Action Gates for AI Coding Agents
+
+## What it does
+ThumbGate adds deterministic pre-action gates to AI coding agents. Before any destructive operation executes, ThumbGate checks it against enforceable rules.
+
+## Key features
+- **33 pre-action gates** — block destructive actions (force-push, mass delete, destructive SQL) before they execute
+- **Thumbs up/down feedback** — type "thumbs down" and the mistake becomes a prevention rule
+- **Budget enforcement** — action count + time limits prevent runaway sessions
+- **Self-protection** — agent cannot disable its own governance
+- **NIST/SOC2 compliance tags** — enterprise-ready gate rules
+
+## Installation
+```
+npx thumbgate
+```
+
+## Usage
+Start a Claude Code session with ThumbGate installed. When the agent does something wrong, type "thumbs down" — ThumbGate captures the mistake, distills a lesson, and creates a prevention rule that blocks the pattern from repeating.