diff --git a/.changeset/sharp-cranes-hum.md b/.changeset/sharp-cranes-hum.md
new file mode 100644
index 000000000..733e53353
--- /dev/null
+++ b/.changeset/sharp-cranes-hum.md
@@ -0,0 +1,5 @@
+---
+type: Fixed
+pr: 3113
+---
+**Claude Code plugin installs no longer silently disable all hooks** — the plugin manifest (`.claude-plugin/plugin.json`) explicitly declared `hooks/hooks.json`, which Claude Code also auto-loads by default, causing a duplicate-declaration rejection that silently disabled every hook (security guards, monitors, injection scanners). The redundant declaration is removed; Claude Code's auto-load path handles it. (#3029)
diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index dd0925945..f6ebd3714 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -19,6 +19,5 @@
     "gsd"
   ],
   "commands": "./commands/gsd/",
-  "skills": "./skills/",
-  "hooks": "./hooks/hooks.json"
+  "skills": "./skills/"
 }
diff --git a/tests/fixtures/plugin-manifest-schema.json b/tests/fixtures/plugin-manifest-schema.json
index 886e9497a..e7dddd8d4 100644
--- a/tests/fixtures/plugin-manifest-schema.json
+++ b/tests/fixtures/plugin-manifest-schema.json
@@ -11,8 +11,7 @@
     "repository",
     "homepage",
     "license",
-    "commands",
-    "hooks"
+    "commands"
   ],
   "additionalProperties": true,
   "properties": {
diff --git a/tests/issue-766-plugin-manifest.test.cjs b/tests/issue-766-plugin-manifest.test.cjs
index 80a94124f..329e29a9f 100644
--- a/tests/issue-766-plugin-manifest.test.cjs
+++ b/tests/issue-766-plugin-manifest.test.cjs
@@ -92,11 +92,12 @@ describe('A: .claude-plugin/plugin.json', () => {
     assert.ok(mdFiles.length > 0, `commands dir must contain at least one .md file`);
   });
 
-  test('hooks field is "./hooks/hooks.json" and that file exists', (t) => {
+  test('#3029: hooks field is ABSENT — Claude Code auto-loads hooks/hooks.json (explicit declaration caused duplicate-rejection)', (t) => {
     if (!manifest) { t.skip('manifest could not be parsed'); return; }
-    assert.equal(manifest.hooks, './hooks/hooks.json', 'hooks must be "./hooks/hooks.json"');
-    const resolvedHooks = path.resolve(path.dirname(PLUGIN_JSON_PATH), '..', manifest.hooks);
-    assert.ok(fs.existsSync(resolvedHooks), `resolved hooks file must exist: ${resolvedHooks}`);
+    assert.ok(!manifest.hooks, 'plugin.json must NOT declare hooks — Claude Code auto-loads hooks/hooks.json; an explicit declaration causes a duplicate-rejection that silently disables all hooks (#3029)');
+    // The auto-loaded hooks file must still exist on disk.
+    const resolvedHooks = path.resolve(path.dirname(PLUGIN_JSON_PATH), '..', 'hooks', 'hooks.json');
+    assert.ok(fs.existsSync(resolvedHooks), `hooks/hooks.json must exist for auto-loading: ${resolvedHooks}`);
   });
 
   test('no "$schema" key (intentionally omitted)', (t) => {