Frontend uudelleenrakennettu: Astro-komponentit, Wasm pääsäikeessä, ei Workeria

Vanha frontend siirretty temp/. Uusi rakenne:
- StatusBar.astro, Terminal.astro, Editor.astro, Guide.astro
- global.css erillinen
- Wasm pääsäikeessä (ei Worker — yksinkertainen, debugattava)
- Tab-completion, dropdown, projektikortti, Monaco, GUIDE.md
- Ei tokenisointia eikä koodilaboratoriota

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

network-poc/frontend/node_modules/prismjs/components/prism-antlr4.min.js

@@ -0,0 +1 @@
+Prism.languages.antlr4={comment:/\/\/.*|\/\*[\s\S]*?(?:\*\/|$)/,string:{pattern:/'(?:\\.|[^\\'\r\n])*'/,greedy:!0},"character-class":{pattern:/\[(?:\\.|[^\\\]\r\n])*\]/,greedy:!0,alias:"regex",inside:{range:{pattern:/([^[]|(?:^|[^\\])(?:\\\\)*\\\[)-(?!\])/,lookbehind:!0,alias:"punctuation"},escape:/\\(?:u(?:[a-fA-F\d]{4}|\{[a-fA-F\d]+\})|[pP]\{[=\w-]+\}|[^\r\nupP])/,punctuation:/[\[\]]/}},action:{pattern:/\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{[^{}]*\})*\})*\})*\}/,greedy:!0,inside:{content:{pattern:/(\{)[\s\S]+(?=\})/,lookbehind:!0},punctuation:/[{}]/}},command:{pattern:/(->\s*(?!\s))(?:\s*(?:,\s*)?\b[a-z]\w*(?:\s*\([^()\r\n]*\))?)+(?=\s*;)/i,lookbehind:!0,inside:{function:/\b\w+(?=\s*(?:[,(]|$))/,punctuation:/[,()]/}},annotation:{pattern:/@\w+(?:::\w+)*/,alias:"keyword"},label:{pattern:/#[ \t]*\w+/,alias:"punctuation"},keyword:/\b(?:catch|channels|finally|fragment|grammar|import|lexer|locals|mode|options|parser|returns|throws|tokens)\b/,definition:[{pattern:/\b[a-z]\w*(?=\s*:)/,alias:["rule","class-name"]},{pattern:/\b[A-Z]\w*(?=\s*:)/,alias:["token","constant"]}],constant:/\b[A-Z][A-Z_]*\b/,operator:/\.\.|->|[|~]|[*+?]\??/,punctuation:/[;:()=]/},Prism.languages.g4=Prism.languages.antlr4;