feat(dashboard): show build git SHA in header + profile page

The version label now renders 'v0.5.86 (<shortsha>)' when the flake build
injects NEXT_PUBLIC_GIT_SHA (git commit identity of the deployed artifact),
so any running dashboard traces to its exact source commit. Falls back to
semver-only when the env var is absent (local dev). Also fixes the profile
page repo link back to asepharyana/9router (MIBP merge target), replacing
the mhiqrambg fork label left over from the merge.

flake.nix

@@ -60,6 +60,9 @@
             bun install 2>&1
 
             echo "=== bun run build (next build --webpack) ==="
+            # Inline the git SHA into the client bundle so the dashboard header
+            # shows "v0.5.86 (<shortsha>)" — traceable build identity in the UI.
+            export NEXT_PUBLIC_GIT_SHA="${rev}"
             bun run build 2>&1
 
             echo "=== Build complete ==="

src/app/(dashboard)/dashboard/profile/page.js

@@ -1685,15 +1685,15 @@ export default function ProfilePage() {
 
         {/* App Info */}
         <div className="text-center text-xs sm:text-sm text-text-muted py-4">
-          <p>{APP_CONFIG.name} v{APP_CONFIG.version}</p>
+          <p>{APP_CONFIG.name} v{APP_CONFIG.version}{APP_CONFIG.gitSha ? ` (${APP_CONFIG.gitSha})` : ""}</p>
           <p className="mt-1">{isRemoteHost ? "Remote Mode" : "Local Mode - All data stored on your machine"}</p>
           <a
-            href="https://github.com/mhiqrambg/9router-mibp-version"
+            href="https://github.com/asepharyana/9router"
             target="_blank"
             rel="noreferrer"
             className="inline-block mt-1 text-[11px] hover:text-primary transition-colors"
           >
-            MIBP Edition
+            asepharyana/9router · MIBP merge
           </a>
         </div>
       </div>

src/shared/components/Sidebar.js

@@ -128,7 +128,7 @@ export default function Sidebar({ onClose }) {
               <h1 className="text-lg font-semibold tracking-tight text-text-main">
                 {APP_CONFIG.name}
               </h1>
-              <span className="text-xs text-text-muted">v{APP_CONFIG.version}</span>
+              <span className="text-xs text-text-muted">v{APP_CONFIG.version}{APP_CONFIG.gitSha ? ` (${APP_CONFIG.gitSha})` : ""}</span>
             </div>
           </Link>
           {updateInfo && (

src/shared/constants/config.js

@@ -5,6 +5,10 @@ export const APP_CONFIG = {
   name: "9Router Proxy",
   description: "AI Infrastructure Management",
   version: pkg.version,
+  // Build identity = git short SHA, injected at build time by the Nix flake
+  // (NEXT_PUBLIC_GIT_SHA). Falls back to "dirty"/undefined in dev where the
+  // env var is absent, so the dashboard shows just the semver.
+  gitSha: process.env.NEXT_PUBLIC_GIT_SHA || null,
 };
 
 // GitHub configuration