refactor(core): extract crewai-core for shared utilities and standalone CLI

- New lib/crewai-core/ package: version, paths, constants, lock_store, user_data,
  printer, telemetry. Pure leaf — depends only on appdirs/portalocker/rich/otel.
- crewai now depends on crewai-core; old crewai.utilities.{version,paths,printer,
  lock_store} and the user-data block of events/listeners/tracing/utils.py become
  one-shot DeprecationWarning shims that re-export from crewai_core.
- crewai-cli drops its hard dep on crewai and depends only on crewai-core. CLI
  imports for telemetry/version/printer/constants now point at crewai_core.
- tools/main.py lazy-imports project_utils + get_user_id; the publish/login
  subcommands print a friendly "requires crewai" error if it's missing.
- crewai-cli is now genuinely standalone: 'crewai --help', 'version', 'login',
  'config', 'traces', 'create', 'template' all work without crewai installed.
- 351 CLI tests + 9 crewai-core smoke tests + crewai's full mypy (471 files) clean.

uv.lock

@@ -19,6 +19,7 @@ exclude-newer = "2026-04-27T16:00:00Z"
 members = [
     "crewai",
     "crewai-cli",
+    "crewai-core",
     "crewai-devtools",
     "crewai-files",
     "crewai-tools",
@@ -1280,6 +1281,7 @@ dependencies = [
     { name = "appdirs" },
     { name = "chromadb" },
     { name = "click" },
+    { name = "crewai-core" },
     { name = "httpx" },
     { name = "instructor" },
     { name = "json-repair" },
@@ -1387,6 +1389,7 @@ requires-dist = [
     { name = "chromadb", specifier = "~=1.1.0" },
     { name = "click", specifier = "~=8.1.7" },
     { name = "crewai-cli", marker = "extra == 'cli'", editable = "lib/cli" },
+    { name = "crewai-core", editable = "lib/crewai-core" },
     { name = "crewai-files", marker = "extra == 'file-processing'", editable = "lib/crewai-files" },
     { name = "crewai-tools", marker = "extra == 'tools'", editable = "lib/crewai-tools" },
     { name = "docling", marker = "extra == 'docling'", specifier = "~=2.84.0" },
@@ -1436,11 +1439,10 @@ source = { editable = "lib/cli" }
 dependencies = [
     { name = "appdirs" },
     { name = "click" },
-    { name = "crewai" },
+    { name = "crewai-core" },
     { name = "cryptography" },
     { name = "httpx" },
     { name = "packaging" },
-    { name = "portalocker" },
     { name = "pydantic" },
     { name = "pydantic-settings" },
     { name = "pyjwt" },
@@ -1455,11 +1457,10 @@ dependencies = [
 requires-dist = [
     { name = "appdirs", specifier = "~=1.4.4" },
     { name = "click", specifier = "~=8.1.7" },
-    { name = "crewai", editable = "lib/crewai" },
+    { name = "crewai-core", editable = "lib/crewai-core" },
     { name = "cryptography", specifier = ">=42.0" },
     { name = "httpx", specifier = "~=0.28.1" },
     { name = "packaging", specifier = ">=23.0" },
-    { name = "portalocker", specifier = "~=2.7.0" },
     { name = "pydantic", specifier = ">=2.11.9,<2.13" },
     { name = "pydantic-settings", specifier = "~=2.10.1" },
     { name = "pyjwt", specifier = ">=2.9.0,<3" },
@@ -1470,6 +1471,28 @@ requires-dist = [
     { name = "uv", specifier = "~=0.9.13" },
 ]
 
+[[package]]
+name = "crewai-core"
+source = { editable = "lib/crewai-core" }
+dependencies = [
+    { name = "appdirs" },
+    { name = "opentelemetry-api" },
+    { name = "opentelemetry-exporter-otlp-proto-http" },
+    { name = "opentelemetry-sdk" },
+    { name = "portalocker" },
+    { name = "rich" },
+]
+
+[package.metadata]
+requires-dist = [
+    { name = "appdirs", specifier = "~=1.4.4" },
+    { name = "opentelemetry-api", specifier = "~=1.34.0" },
+    { name = "opentelemetry-exporter-otlp-proto-http", specifier = "~=1.34.0" },
+    { name = "opentelemetry-sdk", specifier = "~=1.34.0" },
+    { name = "portalocker", specifier = "~=2.7.0" },
+    { name = "rich", specifier = ">=13.7.1" },
+]
+
 [[package]]
 name = "crewai-devtools"
 source = { editable = "lib/devtools" }