fix(web): honest fork-status notes on install paths, soften xbps claim

Install one-liners still fetch the upstream script, so each install
entry point now says so plainly (Nix-page precedent): upstream
installs Vocalinux, not Voculinux, and fork release artefacts are not
published yet. Homepage xbps card no longer claims signed repository
data ships with every release while the packaging pipeline (#29) is
open. Also 'VocaHQ remote' -> 'Flatpak remote' on the install page.

Refs #24

web/src/app/install/[distro]/page.tsx

@@ -534,6 +534,11 @@ export default async function DistroInstallPage({
               {config.installCommand}
             </code>
           </div>
+          <p className="mt-4 text-sm text-muted-foreground">
+            Fork status: this command fetches the upstream install script, so
+            it installs Vocalinux (upstream), not Voculinux. Fork release
+            artefacts are not published yet.
+          </p>
         </div>
       </section>
 

web/src/app/install/page.tsx

@@ -101,6 +101,11 @@ export default function InstallGuidesPage() {
         <p className="mt-4 text-sm text-muted-foreground">
           Then launch <code>voculinux</code>.
         </p>
+        <p className="mt-4 text-sm text-muted-foreground">
+          Fork status: this command fetches the upstream install script, so
+          it installs Vocalinux (upstream), not Voculinux. Fork release
+          artefacts are not published yet.
+        </p>
         <div className="install-alts">
           <a
             className="install-alt"
@@ -133,7 +138,7 @@ export default function InstallGuidesPage() {
             <p className="install-alt-kicker">Auto-updates</p>
             <h2>Flatpak</h2>
             <p>
-              Install once from the VocaHQ remote and{" "}
+              Install once from the Flatpak remote and{" "}
               <code>flatpak update</code> carries each stable release. Or
               sideload the .flatpak bundle.
             </p>

web/src/app/page.tsx

@@ -751,6 +751,11 @@ export default function HomePage() {
             label="install.sh --interactive"
           />
           <p className="section-lede">Then launch <code>voculinux</code>.</p>
+          <p className="mt-4 text-sm text-muted-foreground">
+            Fork status: this command fetches the upstream install script, so
+            it installs Vocalinux (upstream), not Voculinux. Fork release
+            artefacts are not published yet.
+          </p>
           <div className="install-alts">
             <a
               className="install-alt"
@@ -760,8 +765,9 @@ export default function HomePage() {
               <p className="install-alt-kicker">Void Linux</p>
               <h3>xbps repository</h3>
               <p>
-                Signed xbps repository data is attached to every release.
-                Install and update with the normal Void package tools.
+                Signed xbps repository data will ship with releases once the
+                packaging pipeline lands. Until then, use the install script
+                or build from source.
               </p>
             </a>
             <a