refactor(cloud): unify cloud and serverless under single cloud namespace (#199)

* refactor(cloud): unify cloud and serverless under single `cloud` namespace

Partial revert of #131. Merges the top-level `serverless` command
back under `cloud` to match customer mental model where both Hosted
Deployments and Serverless Projects are offerings of the same
product (Elastic Cloud).

New command tree:
- `elastic cloud {account,authentication,organizations,user-role-assignments}`
  — cross-cutting APIs promoted to direct children.
- `elastic cloud hosted <namespace>` — Hosted deployments, templates,
  extensions, stack versions, trusted envs, billing.
- `elastic cloud serverless <...>` — Serverless projects (es, observability,
  security) plus regions, traffic-filters, linked-projects, etc.

Top-level `serverless` command is removed. Clean break, no aliases
(project is 0.1.0-alpha.1 and the old split landed in a recent PR).

Closes #193

* fix(test): replace any with typed CommandNode in alias-check

Replaces the inline `any[]` on the recursive visit helper with a local
CommandNode interface, so the test conforms to the repo's
@typescript-eslint/no-explicit-any rule.

Author: MattDevy

README.md

@@ -224,55 +224,69 @@ elastic es update --index my-index --id abc123
 
 Run `elastic es <command> --help` for all available options on any command.
 
-### `cloud` - Elastic Cloud (hosted)
+### `cloud` - Elastic Cloud
 
-Manage Elastic Cloud hosted deployments.
+Manage Elastic Cloud: Hosted deployments and Serverless projects.
 Requires a `cloud` service block in the active context.
 
-#### `cloud deployments`
+The tree has three kinds of children:
+
+- Cross-cutting namespaces as direct children of `cloud` (APIs that apply to
+  both Hosted and Serverless).
+- `cloud hosted …` for Hosted-Deployment APIs.
+- `cloud serverless …` for Serverless-Project APIs.
+
+#### Cross-cutting (account, auth, orgs, roles)
 
 ```bash
-elastic cloud deployments list-deployments
-elastic cloud deployments get-deployment --id <id>
-elastic cloud deployments shutdown-deployment --id <id>
-elastic cloud deployments create-deployment <<< '{"name":"my-deployment",...}'
+elastic cloud accounts get-current-account
+elastic cloud authentication get-api-keys
+elastic cloud organizations list-organizations
+elastic cloud organizations get-organization --organization-id <id>
+elastic cloud user-role-assignments add-role-assignments --user-id <id> <<< '{...}'
 ```
 
-Run `elastic cloud --help` for all available namespace groups (accounts,
-billing-costs-analysis, deployment-templates, extensions, organizations, etc.).
+#### `cloud hosted` - Hosted Deployments
 
-### `serverless` - Elastic Serverless
+```bash
+elastic cloud hosted deployments list-deployments
+elastic cloud hosted deployments get-deployment --id <id>
+elastic cloud hosted deployments shutdown-deployment --id <id>
+elastic cloud hosted deployments create-deployment <<< '{"name":"my-deployment",...}'
+elastic cloud hosted deployment-templates list-deployment-templates
+elastic cloud hosted extensions list-extensions
+elastic cloud hosted stack get-version-stacks
+```
 
-Manage Elastic Serverless projects and resources.
-Requires a `cloud` service block in the active context.
+Run `elastic cloud hosted --help` for all available namespace groups
+(billing-costs-analysis, deployment-templates, deployments, deployments-traffic-filter,
+extensions, stack, trusted-environments).
 
-#### `serverless es projects` - Elasticsearch projects
+#### `cloud serverless` - Serverless Projects
 
 ```bash
-elastic serverless es projects list
-elastic serverless es projects create <<< '{"name":"demo","region_id":"aws-us-east-1"}'
-elastic serverless es projects create --wait <<< '{"name":"demo","region_id":"aws-us-east-1"}'
-elastic serverless es projects get --id <id>
-elastic serverless es projects delete --id <id>
-elastic serverless es projects get-status --id <id>
-elastic serverless es projects get-roles --id <id>
-elastic serverless es projects reset-credentials --id <id>
+elastic cloud serverless es projects list
+elastic cloud serverless es projects create <<< '{"name":"demo","region_id":"aws-us-east-1"}'
+elastic cloud serverless es projects create --wait <<< '{"name":"demo","region_id":"aws-us-east-1"}'
+elastic cloud serverless es projects get --id <id>
+elastic cloud serverless es projects delete --id <id>
+elastic cloud serverless es projects get-status --id <id>
+elastic cloud serverless es projects get-roles --id <id>
+elastic cloud serverless es projects reset-credentials --id <id>
 ```
 
-#### `serverless observability projects` / `serverless security projects`
-
-Same commands as `es projects` but for Observability and Security project types:
+Same commands are available under `observability` and `security`:
 
 ```bash
-elastic serverless observability projects list
-elastic serverless security projects create --wait <<< '{"name":"demo","region_id":"aws-us-east-1"}'
+elastic cloud serverless observability projects list
+elastic cloud serverless security projects create --wait <<< '{"name":"demo","region_id":"aws-us-east-1"}'
 ```
 
-#### Other serverless resources
+Other serverless resources:
 
 ```bash
-elastic serverless regions list-regions
-elastic serverless traffic-filters list-traffic-filters
+elastic cloud serverless regions list-regions
+elastic cloud serverless traffic-filters list-traffic-filters
 ```
 
-Run `elastic serverless --help` for all available groups.
+Run `elastic cloud serverless --help` for all available groups.

src/cli.ts

@@ -71,14 +71,7 @@ if (firstArg === 'cloud') {
   const { registerCloudCommands } = await import('./cloud/register.ts')
   program.addCommand(registerCloudCommands())
 } else {
-  program.addCommand(defineGroup({ name: 'cloud', description: 'Manage Elastic Cloud deployments' }))
-}
-
-if (firstArg === 'serverless') {
-  const { registerServerlessCommands } = await import('./cloud/register.ts')
-  program.addCommand(registerServerlessCommands())
-} else {
-  program.addCommand(defineGroup({ name: 'serverless', description: 'Manage Elastic Serverless projects and resources' }))
+  program.addCommand(defineGroup({ name: 'cloud', description: 'Manage Elastic Cloud (hosted deployments and serverless projects)' }))
 }
 
 if (firstArg === 'docs') {