Section Analysis in the browser, with an eye to turn it off (#822) (#947)

A section stayed on with nothing in the browser to switch it off; only the
viewport's context menu had Remove Section. While there is one, the browser
now has an Analysis folder listing it. Its eye (and the folder's) hides the
section and shows it again on the same plane; a double-click or Edit Section
Analysis opens the dialog, and Delete removes it. Browser rows with an eye
publish an `eye:<label>` handle for automation.

Fixes #822

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

docs/i18n_catalog_ja.md

@@ -1,4 +1,4 @@
-# SolidCraft 英語・日本語 ローカライズ対照リスト (全 844 件)
+# SolidCraft 英語・日本語 ローカライズ対照リスト (全 846 件)
 
 | 英語 (English) | 日本語 (Japanese) | キー名 (Key) |
 | :--- | :--- | :--- |
@@ -50,6 +50,7 @@
 | All Sketch Points | すべてのスケッチ点 | `All Sketch Points` |
 | Allowed expressions, separated by semicolons | 使用可能な式（セミコロンで区切る） | `Allowed expressions, separated by semicolons` |
 | Also deletes | 同時に削除される要素: | `Also deletes` |
+| Analysis | 解析 | `ui.analysis` |
 | Angle | 角度 | `ui.angle` |
 | Angle 2 | 角度 2 | `Angle 2` |
 | Angle decimals | 角度の小数点以下の桁数 | `ui.angle_decimals` |
@@ -290,6 +291,7 @@
 | Edit Joint | ジョイントを編集 | `cmd.joint_edit` |
 | Edit Physical Material | 物理マテリアルを編集 | `cmd.material_edit` |
 | Edit Profile Sketch | プロファイルスケッチを編集 | `Edit Profile Sketch` |
+| Edit Section Analysis | 断面解析を編集 | `ui.edit_section_analysis` |
 | Edit Sketch | スケッチを編集 | `cmd.sketch_edit` |
 | Edit Text | テキストを編集 | `cmd.sketch_edit_text` |
 | Ellipse | 楕円 | `ui.ellipse` |