Cause: the click-to-edit fields (hot numbers and revolutions, the Timeline
time display and layer comments, Project rename/comment, the Render Queue
output path, Essential Graphics control names) opened a text edit with
egui's default caret at the end of the text, so typing appended to the old
value. The Timeline time display, layer comment and Essential Graphics name
editors also re-requested focus before checking `lost_focus()`, which hid
the loss, so Enter, Escape and clicking away never closed them.
Fix: a shared `widgets::keep_focus` keeps an open inline editor focused and
selects its whole text on the frame it opens (`widgets::select_all`, which
the layer rename now reuses). Those editors check for a lost focus first,
and Escape now cancels in the time display and the Essential Graphics
name editor.
Test: ui_angles `typing_replaces_the_clicked_value` (degrees and revolutions
in Effect Controls, Timeline and Properties, typed without Ctrl+A);
ui_inline_edit `project_rename_replaces_the_name` and
`timecode_field_replaces_commits_and_cancels`.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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