feat(llm-security-copilot): port llm-security v5.1.0 to GitHub Copilot CLI

Full port of llm-security plugin for internal use on Windows with GitHub
Copilot CLI. Protocol translation layer (copilot-hook-runner.mjs)
normalizes Copilot camelCase I/O to Claude Code snake_case format — all
original hook scripts run unmodified.

- 8 hooks with protocol translation (stdin/stdout/exit code)
- 18 SKILL.md skills (Agent Skills Open Standard)
- 6 .agent.md agent definitions
- 20 scanners + 14 scanner lib modules (unchanged)
- 14 knowledge files (unchanged)
- 39 test files including copilot-port-verify.mjs (17 tests)
- Windows-ready: node:path, os.tmpdir(), process.execPath, no bash

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/llm-security-copilot/hooks/hooks.json

@@ -0,0 +1,79 @@
+{
+  "version": 1,
+  "hooks": {
+    "userPromptSubmitted": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs pre-prompt-inject-scan.mjs"
+          }
+        ]
+      },
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs update-check.mjs"
+          }
+        ]
+      }
+    ],
+    "preToolUse": [
+      {
+        "matcher": "edit|create",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs pre-edit-secrets.mjs"
+          }
+        ]
+      },
+      {
+        "matcher": "bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs pre-bash-destructive.mjs"
+          }
+        ]
+      },
+      {
+        "matcher": "bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs pre-install-supply-chain.mjs"
+          }
+        ]
+      },
+      {
+        "matcher": "create",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs pre-write-pathguard.mjs"
+          }
+        ]
+      }
+    ],
+    "postToolUse": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs post-mcp-verify.mjs"
+          }
+        ]
+      },
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node hooks/scripts/copilot-hook-runner.mjs post-session-guard.mjs"
+          }
+        ]
+      }
+    ]
+  }
+}