feat: add block-no-verify hook for Claude Code and Cursor (#649)

Adds npx block-no-verify@1.1.2 as a PreToolUse Bash hook in hooks/hooks.json
and a beforeShellExecution hook in .cursor/hooks.json to prevent AI agents
from bypassing git hooks via the hook-bypass flag.

This closes the last enforcement gap in the ECC security stack — the bypass
flag silently skips pre-commit, commit-msg, and pre-push hooks.

Closes #648

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

hooks/hooks.json

@@ -2,6 +2,16 @@
   "$schema": "https://json.schemastore.org/claude-code-settings.json",
   "hooks": {
     "PreToolUse": [
+      {
+        "matcher": "Bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "npx block-no-verify@1.1.2"
+          }
+        ],
+        "description": "Block git hook-bypass flag to protect pre-commit, commit-msg, and pre-push hooks from being skipped"
+      },
       {
         "matcher": "Bash",
         "hooks": [