Preserve old panel anchors via injected HTML spans

Instead of excluding the renamed curses.panel.Panel.* IDs from the
check-html-ids.py check, keep the old URL fragments working by injecting
<span> anchors, as proposed by Stan Ulbrych and done elsewhere (gh-89554).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: serhiy-storchaka

Doc/library/curses.panel.rst

@@ -56,6 +56,22 @@ The module :mod:`!curses.panel` defines the following functions:
 Panel objects
 -------------
 
+.. raw:: html
+
+   <!-- Keep the old URL fragments working (see gh-89554) -->
+   <span id='curses.panel.Panel.above'></span>
+   <span id='curses.panel.Panel.below'></span>
+   <span id='curses.panel.Panel.bottom'></span>
+   <span id='curses.panel.Panel.hidden'></span>
+   <span id='curses.panel.Panel.hide'></span>
+   <span id='curses.panel.Panel.move'></span>
+   <span id='curses.panel.Panel.replace'></span>
+   <span id='curses.panel.Panel.set_userptr'></span>
+   <span id='curses.panel.Panel.show'></span>
+   <span id='curses.panel.Panel.top'></span>
+   <span id='curses.panel.Panel.userptr'></span>
+   <span id='curses.panel.Panel.window'></span>
+
 .. class:: panel
 
    Panel objects, as returned by :func:`new_panel` above, are windows with a

Doc/tools/removed-ids.txt

@@ -33,17 +33,3 @@ reference/expressions.html: grammar-token-python-grammar-set_display
 # Moved to a different page
 c-api/typeobj.html: c.Py_tp_base
 c-api/typeobj.html: c.Py_tp_bases
-
-# curses.panel.panel is the correct class name.
-library/curses.panel.html: curses.panel.Panel.above
-library/curses.panel.html: curses.panel.Panel.below
-library/curses.panel.html: curses.panel.Panel.bottom
-library/curses.panel.html: curses.panel.Panel.hidden
-library/curses.panel.html: curses.panel.Panel.hide
-library/curses.panel.html: curses.panel.Panel.move
-library/curses.panel.html: curses.panel.Panel.replace
-library/curses.panel.html: curses.panel.Panel.set_userptr
-library/curses.panel.html: curses.panel.Panel.show
-library/curses.panel.html: curses.panel.Panel.top
-library/curses.panel.html: curses.panel.Panel.userptr
-library/curses.panel.html: curses.panel.Panel.window