diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..98500ff
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,66 @@
+# Changelog
+
+All notable changes to **A-WP-Notes** are documented here.
+Format: [Keep a Changelog 1.1.0](https://keepachangelog.com/en/1.1.0/) — versioning: [SemVer](https://semver.org/).
+
+---
+
+## [Unreleased]
+
+### Fixed
+- **"Add New Note" sidebar submenu opening the WordPress post editor.**
+  The plugin registered a `wp_note` custom post type with
+  `show_ui => true` and `show_in_menu => 'wp-notes'`, which caused
+  WordPress to auto-inject "All Notes" and "Add New" submenus under
+  the WP Notes admin menu. The "Add New" submenu routed to
+  `post-new.php?post_type=wp_note` — the standard WordPress post
+  editor — but the live plugin stores notes in `wp_options`
+  (`get_option('wp_notes')`), not as CPT posts. Saving in the post
+  editor wrote to the wrong storage and the new note never appeared
+  in the WP Notes list. Discovered 2026-05-25.
+
+  Fixed by setting `show_ui` and `show_in_menu` to `false` on the
+  `wp_note` CPT, and `show_ui` / `show_admin_column` /
+  `show_in_rest` to `false` on the `wp_note_category` taxonomy. The
+  CPT and taxonomy remain registered so `wp_notes_migrate_to_cpt()`
+  can still use `wp_insert_post()` if/when the migration is run.
+  The form on the actual WP Notes page (the one that POSTs to the
+  same admin page) continues to work unchanged.
+
+### Notes
+- The plugin currently uses **two storage models**: the active one is
+  `wp_options` (key `wp_notes`, with completed notes in
+  `wp_done_notes`). The CPT + meta storage is the *target* of an
+  unfinished migration; the helper `wp_notes_migrate_to_cpt()` is
+  defined but unused by the live UI. Until that migration is
+  completed, hiding the CPT from the admin UI prevents users from
+  accidentally writing to the wrong store.
+
+---
+
+## [3.0.2] — 2025-05-10 (last released version, baseline)
+
+The v3 "without all the crap" release. Trimmed from the v1.1.5
+feature-creep era which had bolted on:
+
+- AI chat (multiple variants)
+- AI personalities
+- Journal mode
+- Speedtest
+- Tamagotchi (yes, really)
+- Backup
+- And more
+
+v3 strips back to the essentials:
+
+- Notes list (in `wp_options`)
+- Create note form (color, size, font, emoji)
+- Admin bar quick-access menu
+- Settings page
+- Import / Export
+- About page
+- Update checker
+
+This baseline entry exists for historical context; future releases
+should keep adding entries above and remove this note once a real
+changelog history accrues.
diff --git a/wp-notes.php b/wp-notes.php
index cfab3f8..06f15e8 100644
--- a/wp-notes.php
+++ b/wp-notes.php
@@ -1513,14 +1513,20 @@ function wp_notes_register_cpt() {
     $args = array(
         'labels'              => $labels,
         'public'              => false,
-        'show_ui'            => true,
-        'show_in_menu'       => 'wp-notes',
+        // show_ui=false: the live UI stores notes in wp_options, not as
+        // CPT posts. show_ui=true caused WordPress to auto-inject "All
+        // Notes" and "Add New" submenus that pointed at post-new.php and
+        // routed users into the standard post editor — which writes to
+        // the wrong storage. The CPT remains registered so the
+        // wp_notes_migrate_to_cpt() helper can still use wp_insert_post.
+        'show_ui'            => false,
+        'show_in_menu'       => false,
         'capability_type'    => 'post',
         'hierarchical'       => false,
         'supports'           => array('title', 'editor', 'author', 'custom-fields'),
         'has_archive'        => false,
         'menu_position'      => null,
-        'show_in_rest'       => true,
+        'show_in_rest'       => false,
     );
 
     register_post_type('wp_note', $args);
@@ -1543,10 +1549,13 @@ function wp_notes_register_cpt() {
     register_taxonomy('wp_note_category', 'wp_note', array(
         'hierarchical'      => true,
         'labels'            => $tax_labels,
-        'show_ui'           => true,
-        'show_admin_column' => true,
+        // Hidden alongside the parent CPT — live UI doesn't surface
+        // categories yet, and showing the taxonomy in admin with the
+        // parent hidden would just dead-link.
+        'show_ui'           => false,
+        'show_admin_column' => false,
         'query_var'         => true,
-        'show_in_rest'      => true,
+        'show_in_rest'      => false,
     ));
 }
 add_action('init', 'wp_notes_register_cpt');