fix: wire up enforcement hooks in plugin hooks.json

The plugin ships three enforcement scripts in scripts/ but hooks.json
was empty, meaning marketplace-only installs got zero hook enforcement.
Users who installed via 'plugin install' received agents, commands, and
CLAUDE.md but not the edit-gate that blocks UI file changes without
accessibility-lead review.

Add all three hooks to hooks.json:
- UserPromptSubmit: a11y-team-eval.sh (web project detection)
- PreToolUse (Edit|Write): a11y-enforce-edit.sh (UI file gate)
- PostToolUse (Agent): a11y-mark-reviewed.sh (session marker)

All paths use ${CLAUDE_PLUGIN_ROOT} per the official plugin hooks spec.

Bump plugin version from 1.0.0 to 3.0.1 to align with the published
3.0.0 release and indicate a patch fix.

Author: tesles

claude-code-plugin/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "accessibility-agents",
   "description": "WCAG AA accessibility enforcement for Claude Code. 55 specialist agents, 17 commands, and enforcement hooks that delegate to accessibility-lead for UI code review.",
-  "version": "1.0.0",
+  "version": "3.0.1",
   "author": {
     "name": "Taylor Arndt"
   }

claude-code-plugin/hooks/hooks.json

@@ -1,3 +1,39 @@
 {
-  "hooks": {}
+  "hooks": {
+    "UserPromptSubmit": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/scripts/a11y-team-eval.sh",
+            "timeout": 10
+          }
+        ]
+      }
+    ],
+    "PreToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/scripts/a11y-enforce-edit.sh",
+            "timeout": 10
+          }
+        ]
+      }
+    ],
+    "PostToolUse": [
+      {
+        "matcher": "Agent",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/scripts/a11y-mark-reviewed.sh",
+            "timeout": 5
+          }
+        ]
+      }
+    ]
+  }
 }