Reorganize: Move all skills to skills/ folder

- Created skills/ directory
- Moved 272 skills to skills/ subfolder
- Kept agents/ at root level
- Kept installation scripts and docs at root level

Repository structure:
- skills/           - All 272 skills from skills.sh
- agents/           - Agent definitions
- *.sh, *.ps1       - Installation scripts
- README.md, etc.   - Documentation

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

skills/plugins/claude-code-safety-net/assets/cc-safety-net.schema.json

@@ -0,0 +1,70 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://raw.githubusercontent.com/kenryu42/claude-code-safety-net/main/assets/cc-safety-net.schema.json",
+  "title": "Safety Net Configuration",
+  "description": "Configuration file for cc-safety-net plugin custom rules",
+  "type": "object",
+  "properties": {
+    "$schema": {
+      "description": "JSON Schema reference for IDE support",
+      "type": "string"
+    },
+    "version": {
+      "type": "number",
+      "const": 1,
+      "description": "Schema version (must be 1)"
+    },
+    "rules": {
+      "default": [],
+      "description": "Custom blocking rules",
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "pattern": "^[a-zA-Z][a-zA-Z0-9_-]{0,63}$",
+            "description": "Unique identifier for the rule (case-insensitive for duplicate detection)"
+          },
+          "command": {
+            "type": "string",
+            "pattern": "^[a-zA-Z][a-zA-Z0-9_-]*$",
+            "description": "Base command to match (e.g., 'git', 'npm', 'docker'). Paths are normalized to basename."
+          },
+          "subcommand": {
+            "description": "Optional subcommand to match (e.g., 'add', 'install'). If omitted, matches any subcommand.",
+            "type": "string",
+            "pattern": "^[a-zA-Z][a-zA-Z0-9_-]*$"
+          },
+          "block_args": {
+            "minItems": 1,
+            "type": "array",
+            "items": {
+              "type": "string",
+              "minLength": 1
+            },
+            "description": "Arguments that trigger the block. Command is blocked if ANY of these are present."
+          },
+          "reason": {
+            "type": "string",
+            "minLength": 1,
+            "maxLength": 256,
+            "description": "Message shown when the command is blocked"
+          }
+        },
+        "required": [
+          "name",
+          "command",
+          "block_args",
+          "reason"
+        ],
+        "additionalProperties": false,
+        "description": "A custom rule that blocks specific command patterns"
+      }
+    }
+  },
+  "required": [
+    "version"
+  ],
+  "additionalProperties": false
+}