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-eiffel.min.js

@@ -0,0 +1 @@
+Prism.languages.eiffel={comment:/--.*/,string:[{pattern:/"([^[]*)\[[\s\S]*?\]\1"/,greedy:!0},{pattern:/"([^{]*)\{[\s\S]*?\}\1"/,greedy:!0},{pattern:/"(?:%(?:(?!\n)\s)*\n\s*%|%\S|[^%"\r\n])*"/,greedy:!0}],char:/'(?:%.|[^%'\r\n])+'/,keyword:/\b(?:across|agent|alias|all|and|as|assign|attached|attribute|check|class|convert|create|Current|debug|deferred|detachable|do|else|elseif|end|ensure|expanded|export|external|feature|from|frozen|if|implies|inherit|inspect|invariant|like|local|loop|not|note|obsolete|old|once|or|Precursor|redefine|rename|require|rescue|Result|retry|select|separate|some|then|undefine|until|variant|Void|when|xor)\b/i,boolean:/\b(?:False|True)\b/i,"class-name":/\b[A-Z][\dA-Z_]*\b/,number:[/\b0[xcb][\da-f](?:_*[\da-f])*\b/i,/(?:\b\d(?:_*\d)*)?\.(?:(?:\d(?:_*\d)*)?e[+-]?)?\d(?:_*\d)*\b|\b\d(?:_*\d)*\b\.?/i],punctuation:/:=|<<|>>|\(\||\|\)|->|\.(?=\w)|[{}[\];(),:?]/,operator:/\\\\|\|\.\.\||\.\.|\/[~\/=]?|[><]=?|[-+*^=~]/};