♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prismjs/components/prism-mermaid.min.js

@@ -1 +0,0 @@
-Prism.languages.mermaid={comment:{pattern:/%%.*/,greedy:!0},style:{pattern:/^([ \t]*(?:classDef|linkStyle|style)[ \t]+[\w$-]+[ \t]+)\w.*[^\s;]/m,lookbehind:!0,inside:{property:/\b\w[\w-]*(?=[ \t]*:)/,operator:/:/,punctuation:/,/}},"inter-arrow-label":{pattern:/([^<>ox.=-])(?:-[-.]|==)(?![<>ox.=-])[ \t]*(?:"[^"\r\n]*"|[^\s".=-](?:[^\r\n.=-]*[^\s.=-])?)[ \t]*(?:\.+->?|--+[->]|==+[=>])(?![<>ox.=-])/,lookbehind:!0,greedy:!0,inside:{arrow:{pattern:/(?:\.+->?|--+[->]|==+[=>])$/,alias:"operator"},label:{pattern:/^([\s\S]{2}[ \t]*)\S(?:[\s\S]*\S)?/,lookbehind:!0,alias:"property"},"arrow-head":{pattern:/^\S+/,alias:["arrow","operator"]}}},arrow:[{pattern:/(^|[^{}|o.-])[|}][|o](?:--|\.\.)[|o][|{](?![{}|o.-])/,lookbehind:!0,alias:"operator"},{pattern:/(^|[^<>ox.=-])(?:[<ox](?:==+|--+|-\.*-)[>ox]?|(?:==+|--+|-\.*-)[>ox]|===+|---+|-\.+-)(?![<>ox.=-])/,lookbehind:!0,alias:"operator"},{pattern:/(^|[^<>()x-])(?:--?(?:>>|[x>)])(?![<>()x])|(?:<<|[x<(])--?(?!-))/,lookbehind:!0,alias:"operator"},{pattern:/(^|[^<>|*o.-])(?:[*o]--|--[*o]|<\|?(?:--|\.\.)|(?:--|\.\.)\|?>|--|\.\.)(?![<>|*o.-])/,lookbehind:!0,alias:"operator"}],label:{pattern:/(^|[^|<])\|(?:[^\r\n"|]|"[^"\r\n]*")+\|/,lookbehind:!0,greedy:!0,alias:"property"},text:{pattern:/(?:[(\[{]+|\b>)(?:[^\r\n"()\[\]{}]|"[^"\r\n]*")+(?:[)\]}]+|>)/,alias:"string"},string:{pattern:/"[^"\r\n]*"/,greedy:!0},annotation:{pattern:/<<(?:abstract|choice|enumeration|fork|interface|join|service)>>|\[\[(?:choice|fork|join)\]\]/i,alias:"important"},keyword:[{pattern:/(^[ \t]*)(?:action|callback|class|classDef|classDiagram|click|direction|erDiagram|flowchart|gantt|gitGraph|graph|journey|link|linkStyle|pie|requirementDiagram|sequenceDiagram|stateDiagram|stateDiagram-v2|style|subgraph)(?![\w$-])/m,lookbehind:!0,greedy:!0},{pattern:/(^[ \t]*)(?:activate|alt|and|as|autonumber|deactivate|else|end(?:[ \t]+note)?|loop|opt|par|participant|rect|state|note[ \t]+(?:over|(?:left|right)[ \t]+of))(?![\w$-])/im,lookbehind:!0,greedy:!0}],entity:/#[a-z0-9]+;/,operator:{pattern:/(\w[ \t]*)&(?=[ \t]*\w)|:::|:/,lookbehind:!0},punctuation:/[(){};]/};