Add catatonit/nftables/docker-compose packages, fix CSRF/streaming/storage bugs found by live testing

- Package #9-11: catatonit (pod infra init), nftables (netavark firewall
  backend), docker-compose (external compose provider for `podman compose`)
  — all vendored prebuilt binaries, versions.env pinned, propagated through
  build-packages.sh/release.sh/podman.plg/verify+update-packages.sh.
- Fix WebUI: every POST action was silently failing (empty response body)
  because Unraid's own CSRF protection was never satisfied — app.js now
  sends the page's csrf_token as X-CSRF-Token.
- Fix WebUI: PodmanClient::pullImage() assumed a single JSON response, but
  /images/pull actually streams newline-delimited JSON — every successful
  pull was throwing "Expected a JSON object/array response".
- Fix WebUI: compose.php's up/down status detection had the same
  single-JSON-vs-NDJSON bug for `podman compose ps`, plus stderr was
  corrupting the parse.
- Add cache-busting (?v=<mtime>) to Podman.page's script/style tags so a
  redeployed JS/CSS fix isn't served stale from browser cache.
- Add a reusable modal dialog (app.js openFormModal) replacing
  prompt()/alert() for New Volume/Network/Pull Image.
- Add host-path (bind-mount) support when creating a named volume.
- Add Create Container (image, name, network mode incl. custom networks,
  ports, volumes, env, restart policy, privileged, start-after-create),
  auto-pulling the image on first use since /containers/create doesn't.

All fixes verified live against a real podman system service and, where
reachable, via the actual WebUI over the real socket — not just unit-level.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

webui/plugins/podman/javascript/networks.js

@@ -45,11 +45,16 @@
 
   function init() {
     P.el('networks-create-btn').addEventListener('click', function () {
-      const name = prompt('New network name:');
-      if (!name) return;
-      const subnet = prompt('Subnet (optional, e.g. 10.89.2.0/24):') || undefined;
-      P.post('networks', 'create', { name: name, driver: 'bridge', subnet: subnet }).then(load).catch(function (err) {
-        alert('Create failed: ' + err.message);
+      P.openFormModal({
+        title: 'New Network',
+        submitLabel: 'Create',
+        fields: [
+          { name: 'name', label: 'Network name', required: true, placeholder: 'my-network' },
+          { name: 'subnet', label: 'Subnet (optional)', placeholder: '10.89.2.0/24' },
+        ],
+        onSubmit: function (values) {
+          return P.post('networks', 'create', { name: values.name, driver: 'bridge', subnet: values.subnet || undefined }).then(load);
+        },
       });
     });