Fix syntax highlighting by upgrading to Shiki v3 with all languages

- Upgrade shiki from ^1.0.0 to ^3.13.0
- Use shiki/bundle/full with all bundled languages (200+)
- Change getHighlighter to createHighlighter (v3 API)
- Fix CodeBlockInline to track reactive dependencies (theme, code, language)
- Add markdown code block detection in tool call outputs
- Render tool outputs with Markdown component when they contain code blocks
- Support syntax highlighting for bash, webfetch, and default tool outputs

src/lib/markdown.ts

@@ -1,5 +1,5 @@
 import { marked } from "marked"
-import { getHighlighter, type Highlighter } from "shiki"
+import { createHighlighter, type Highlighter, bundledLanguages } from "shiki/bundle/full"
 
 let highlighter: Highlighter | null = null
 let highlighterPromise: Promise<Highlighter> | null = null
@@ -15,9 +15,9 @@ async function getOrCreateHighlighter() {
     return highlighterPromise
   }
 
-  highlighterPromise = getHighlighter({
+  highlighterPromise = createHighlighter({
     themes: ["github-light", "github-dark"],
-    langs: [],
+    langs: Object.keys(bundledLanguages),
   })
 
   highlighter = await highlighterPromise