Regenerate docs, update CHANGELOG for v1.0.0, clean up registry manifest

- Regenerated docs/ via tfplugindocs: 51 files covering all 20 resources
  and 30 data sources with auto-extracted schemas and examples
- Removed stale docs for old resources (build.md, ssh.md)
- CHANGELOG.md: added v1.0.0 entry with full feature list, breaking
  changes, and security notes
- terraform-registry-manifest.json: confirmed protocol_versions ["6.0"]
  is correct for Terraform Plugin Framework

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/resources/server_firewall.md

@@ -0,0 +1,40 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "virtfusion_server_firewall Resource - virtfusion"
+subcategory: ""
+description: |-
+  Manages a VirtFusion server firewall.
+---
+
+# virtfusion_server_firewall (Resource)
+
+Manages a VirtFusion server firewall.
+
+
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `server_id` (Number) The ID of the server.
+
+### Optional
+
+- `interface_name` (String) The network interface name. Defaults to `eth0`.
+- `rules` (Attributes List) The firewall rules. (see [below for nested schema](#nestedatt--rules))
+
+### Read-Only
+
+- `id` (String) Composite identifier in the format `server_id/interface_name`.
+
+<a id="nestedatt--rules"></a>
+### Nested Schema for `rules`
+
+Required:
+
+- `action` (String) The action for the rule (e.g. `accept`, `drop`).
+- `direction` (String) The direction for the rule (e.g. `in`, `out`).
+- `ip` (String) The IP address or CIDR for the rule.
+- `port` (String) The port or port range for the rule.
+- `protocol` (String) The protocol for the rule (e.g. `tcp`, `udp`).