refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

frontend/components/ui/code-block.tsx

@@ -0,0 +1,61 @@
+"use client"
+
+import * as React from "react"
+import {Check, Copy} from "lucide-react"
+import {cn} from "@/lib/utils"
+
+interface CodeBlockProps extends React.HTMLAttributes<HTMLDivElement> {
+  code: string
+  language?: string
+  showLineNumbers?: boolean
+}
+
+export function CodeBlock({
+  code,
+  language = "bash",
+  className,
+  ...props
+}: CodeBlockProps) {
+  const [hasCopied, setHasCopied] = React.useState(false)
+
+  const onCopy = () => {
+    navigator.clipboard.writeText(code)
+    setHasCopied(true)
+    setTimeout(() => setHasCopied(false), 2000)
+  }
+
+  return (
+    <div
+      className={cn(
+        "relative rounded-xl overflow-hidden bg-[#1e1e1e] dark:bg-[#0d0d0d] border border-border/40 shadow-sm my-4",
+        className
+      )}
+      {...props}
+    >
+      <div className="flex items-center justify-between px-4 py-3 bg-[#1e1e1e] dark:bg-[#0d0d0d] border-b border-white/5">
+        <div className="flex items-center gap-1.5">
+          <div className="w-3 h-3 rounded-full bg-[#ff5f56] border border-[#e0443e]/50" />
+          <div className="w-3 h-3 rounded-full bg-[#ffbd2e] border border-[#dea123]/50" />
+          <div className="w-3 h-3 rounded-full bg-[#27c93f] border border-[#1aab29]/50" />
+        </div>
+        <button
+          onClick={onCopy}
+          className="text-muted-foreground hover:text-white transition-colors"
+        >
+          {hasCopied ? (
+            <Check className="w-3.5 h-3.5" />
+          ) : (
+            <Copy className="w-3.5 h-3.5" />
+          )}
+        </button>
+      </div>
+      <div className="p-4 overflow-x-auto bg-transparent">
+        <pre className="font-mono text-xs leading-relaxed text-[#e0e0e0] !bg-transparent !p-0 !m-0 !border-0 shadow-none whitespace-pre-wrap break-all">
+          <code className={cn("!bg-transparent !p-0 !m-0 !border-0 shadow-none font-mono", language && `language-${ language }`)}>
+            {code}
+          </code>
+        </pre>
+      </div>
+    </div>
+  )
+}