feat: restructure wiki and notes, enhance Viewer component

- Removed obsolete theme index and documentation files.
- Deleted unused images and canvas files.
- Added new images for notes and updated canvas files.
- Enhanced Viewer component with improved zoom and fullscreen functionalities.
- Updated wiki configuration with new navigation and sidebar structure.
- Created new index pages for notes and wiki with categorized content.
- Updated links and references in markdown files to reflect new structure.

notes/canvas.canvas

@@ -1,7 +0,0 @@
-{
-	"nodes":[
-		{"id":"860c29754b1b08bf","type":"text","text":"sdfasdf\nasdfasdfasdf\n# fsadfs fasdf asdf asdf ","x":8640,"y":-4480,"width":496,"height":293},
-		{"id":"ad3484c9e0322d05","type":"text","text":"发色粉撒而非","x":5200,"y":-1840,"width":1920,"height":4946}
-	],
-	"edges":[]
-}

notes/测试导出.md

@@ -2,6 +2,6 @@
 
 这是一个用于测试 Canvas 导出功能的笔记。
 
-![](Untitled.canvas)
+![](测试画板-2.canvas)
 
-![[canvas.canvas]]
+![[测试画板-1.canvas]]

notes/测试画板-1.canvas

@@ -0,0 +1,14 @@
+{
+	"nodes":[
+		{"id":"b42845a8ff7d51dc","x":6380,"y":-3440,"width":1330,"height":1418,"color":"3","type":"group","label":"Untitled group"},
+		{"id":"2780851064da9bdb","type":"file","file":"notes/assets/Untitled.png","x":6580,"y":-3160,"width":460,"height":460},
+		{"id":"596415dba7899135","type":"text","text":"发生的方式方式大幅\n\n撒地方士大夫三大发生的f\n\n的萨芬阿斯蒂芬撒地方\n\n\n撒地方撒地方啊色粉啊色粉\n\n啊色粉啊色粉啊色粉","x":7744,"y":-2649,"width":376,"height":313},
+		{"id":"860c29754b1b08bf","type":"text","text":"sdfasdf\nasdfasdfasdf\n# fsadfs fasdf asdf asdf ","x":6810,"y":-3310,"width":496,"height":300},
+		{"id":"ad3484c9e0322d05","type":"text","text":"发色粉撒而非","x":6360,"y":-2740,"width":500,"height":280},
+		{"id":"c494f34282f42d91","type":"file","file":"notes/assets/20260421-074743.png","x":7306,"y":-2938,"width":198,"height":198}
+	],
+	"edges":[
+		{"id":"a7a9eb1b8977f036","fromNode":"ad3484c9e0322d05","fromSide":"right","toNode":"c494f34282f42d91","toSide":"left"},
+		{"id":"fdb0bd6d9376876f","fromNode":"c494f34282f42d91","fromSide":"right","toNode":"596415dba7899135","toSide":"left"}
+	]
+}