feat: add @clinebot/enterprise SDK package (#85)

* feat: add @clinebot/enterprise SDK package

Introduces @clinebot/enterprise, a new optional composition layer that adds enterprise capabilities on top of @clinebot/core and @clinebot/agents without leaking enterprise-specific concerns into lower-level packages.

The package handles the full enterprise sync lifecycle:

1. Identity resolution — pluggable IdentityAdapter interface (WorkOS adapter included)
2. Control plane sync — fetches remote config bundles via EnterpriseControlPlane
3. Policy materialization — writes managed rules, workflows, and skills to disk so @clinebot/core discovers them through its standard local file path (no special in-memory injection)
4. Telemetry configuration — maps bundle data to normalized OpenTelemetryClientConfig from @clinebot/shared
5. Runtime integration — exposes createEnterprisePlugin() and prepareEnterpriseRuntime() to wire everything into @clinebot/core as an AgentExtension

Design decisions
- Provider-agnostic contracts — IdentityAdapter, EnterpriseControlPlane, and EnterpriseTelemetryAdapter are thin interfaces; WorkOS is an included provider, not a hard dependency
- File-based materialization — enterprise-managed instructions land on disk and are loaded through the same path as any local instruction file, keeping prompt assembly consistent
- Shared RemoteConfig — EnterpriseConfigBundle normalizes into RemoteConfig from @clinebot/shared; no separate enterprise-only config contract
- Clean boundary — if a feature works without org identity, remote policy, or enterprise telemetry, it doesn't belong in this package

* clean up

* refactor: rpc/src/client.ts

* revert package.json

* autoload

* rename agents directory to extensions

* fix renamed path

* fix: use renamed extensions path

* fix checkpoint hooks

sdk/scripts/version.ts

@@ -81,6 +81,9 @@ for (const workspace of workspaces) {
 	try {
 		const raw = await readFile(pkgPath, "utf-8");
 		const pkg = JSON.parse(raw);
+		if (pkg.internal === true) {
+			continue;
+		}
 		const oldVersion = pkg.version;
 		pkg.version = version;