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/ajax/system.php

@@ -59,7 +59,10 @@ function system_summary(PodmanClient $client, PodmanConfig $config): array
     return [
         'reachable' => true,
         'socketPath' => $config->socketPath,
-        'podmanVersion' => $info['Version']['Version'] ?? null,
+        // libpod's /info nests the version block under lowercase "version"
+        // (unlike most other libpod endpoints, which are PascalCase
+        // throughout) — verified live against a real podman system service.
+        'podmanVersion' => $info['version']['Version'] ?? null,
         'containers' => [
             'total' => count($containers),
             'running' => $running,