ux: rename section headings on My Log page to match the logbook framing

The H1 says "WP Logbook" and the sidebar says "My Log" since the
v3.2.0 rebrand, but two section headings on the My Log page still
read "Add New Note" and "Notes Todo List:" — slightly jarring next
to the new identity.

CHANGES
- "Add New Note" (create form postbox) → "New Log Entry"
- "Notes Todo List:" (above active + completed lists) → "Log entries"

NOT CHANGED — intentionally
Row-level labels stay as "note" because that's the unit-of-work term
in the existing data model and the per-row UI:
- "Add Note" submit button
- "Mark as Done"
- "No active/completed notes found" empty-state notices
- Email subjects ("WP Logbook feedback…" stays, doesn't say note)

The headings are brand-y; the row-level strings are functional.
Different rename scope on purpose — minimises churn while still
making the page read consistently with its new name.

No version bump — too small to justify another release, lives in
[Unreleased] until the next phase bundles with it.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,16 @@ Format: [Keep a Changelog 1.1.0](https://keepachangelog.com/en/1.1.0/) — versi
 
 ## [Unreleased]
 
+### Changed — Section headings on My Log page renamed to match the logbook framing
+- `Add New Note` → **`New Log Entry`** on the create form postbox.
+- `Notes Todo List:` → **`Log entries`** above the active/completed
+  lists.
+- Row-level labels intentionally **unchanged** — buttons like *Add
+  Note* / *Mark as Done* / empty-state *No active notes found* still
+  say "note" because that's the unit-of-work term in the existing
+  data model and UI. The headings are brand-y; the row-level strings
+  are functional. Two different concerns, different rename scope.
+
 ---
 
 ## [3.2.0] — 2026-05-25

wp-notes.php

@@ -843,7 +843,7 @@ function wp_notes_page_callback() {
         <!-- Note Creation Form with WordPress Admin Styling -->
         <div class="postbox">
             <div class="postbox-header">
-                <h2 class="hndle">Add New Note</h2>
+                <h2 class="hndle">New Log Entry</h2>
             </div>
             <div class="inside">
                 <form method="post" class="wp-notes-form">
@@ -995,7 +995,7 @@ function wp_notes_page_callback() {
         </style>
 
         <!-- Notes List -->
-        <h2>Notes Todo List:</h2>
+        <h2>Log entries</h2>
         <!-- Active Notes List -->
         <div class="wp-notes-active" id="active-notes">
             <?php wp_notes_display_notes('active'); ?>