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/user_auth_token.md

@@ -0,0 +1,30 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "virtfusion_user_auth_token Resource - virtfusion"
+subcategory: ""
+description: |-
+  Generates an authentication token for a VirtFusion user. This is a trigger-style resource — the token is generated on create and can be re-generated by changing the triggers attribute.
+---
+
+# virtfusion_user_auth_token (Resource)
+
+Generates an authentication token for a VirtFusion user. This is a trigger-style resource — the token is generated on create and can be re-generated by changing the `triggers` attribute.
+
+
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `ext_relation_id` (String) The external relation ID of the user to generate the auth token for.
+
+### Optional
+
+- `triggers` (Map of String) A map of arbitrary strings that, when changed, will cause the auth token to be re-generated. Works like `triggers` in `terraform_data`.
+
+### Read-Only
+
+- `id` (String) The identifier for this auth token generation.
+- `token` (String, Sensitive) The generated authentication token.
+- `url` (String, Sensitive) The authentication URL for the generated token.