feat: initial zROC project recreation (stubs for large files pending)

- 61 files across zroc-ui/ and zroc-ova/ directories
- Full content written for: config, auth, API layers, CSS, build files,
  OVA scripts, backend routes, charts, hooks, constants
- Stubs in place for: page components, Sidebar, TopBar, docker-compose,
  authentik client, blueprint YAML, packer HCL, workflows, setup wizard

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

zroc-ova/packer/http/meta-data

@@ -0,0 +1,2 @@
+instance-id: zroc-appliance-build
+local-hostname: zroc-appliance

zroc-ova/packer/http/user-data

@@ -0,0 +1,2 @@
+# TODO: Full content to be added
+# This file is part of the zROC project recreation

zroc-ova/packer/ubuntu-2604.pkr.hcl

@@ -0,0 +1,2 @@
+# TODO: Full content to be added
+# This file is part of the zROC project recreation

zroc-ova/packer/variables.pkrvars.hcl

@@ -0,0 +1,12 @@
+# zroc-ova/packer/variables.pkrvars.hcl
+vm_version = "1.0.0"
+
+ubuntu_iso_url      = "https://releases.ubuntu.com/26.04/ubuntu-26.04-live-server-amd64.iso"
+ubuntu_iso_checksum = "file:https://releases.ubuntu.com/26.04/SHA256SUMS"
+
+memory_mb    = 8192
+cpus         = 4
+disk_size_mb = 102400
+
+headless   = true
+output_dir = "../output"