♻️ refactor(deepfreeze): update re-export layers for external deepfreeze-core

Update curator to import deepfreeze functionality from the external
deepfreeze-core package instead of local implementation files.

Changes:
- curator/actions/deepfreeze/__init__.py: re-export from deepfreeze_core
- curator/s3client.py: re-export S3 client from deepfreeze_core
- curator/cli_singletons/deepfreeze.py: add porcelain flags to CLI
- pyproject.toml: declare deepfreeze-core>=1.0.0 dependency

The deepfreeze-core package is installed from:
github.com/elastic/deepfreeze (packages/deepfreeze-core)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: Bret Wortman

curator/actions/deepfreeze/__init__.py

@@ -1,21 +1,34 @@
-"""Deepfreeze actions module"""
+"""
+Deepfreeze actions module
 
-from .constants import PROVIDERS, SETTINGS_ID, STATUS_INDEX
-from .exceptions import (
+This module re-exports from the deepfreeze-core package.
+The canonical implementation lives in the 'deepfreeze_core' package.
+"""
+
+# Re-export everything from the deepfreeze-core package
+from deepfreeze_core import (
+    # Constants
+    PROVIDERS,
+    SETTINGS_ID,
+    STATUS_INDEX,
+    # Exceptions
     ActionException,
     DeepfreezeException,
     MissingIndexError,
     MissingSettingsError,
-)
-from .cleanup import Cleanup
-from .helpers import Deepfreeze, Repository, Settings
-from .refreeze import Refreeze
-from .repair_metadata import RepairMetadata
-from .rotate import Rotate
-from .setup import Setup
-from .status import Status
-from .thaw import Thaw
-from .utilities import (
+    # Actions
+    Cleanup,
+    Refreeze,
+    RepairMetadata,
+    Rotate,
+    Setup,
+    Status,
+    Thaw,
+    # Helpers
+    Deepfreeze,
+    Repository,
+    Settings,
+    # Utilities
     check_restore_status,
     create_repo,
     decode_date,

curator/cli_singletons/deepfreeze.py

@@ -246,12 +246,20 @@ def setup(
     default=6,
     help="How many repositories should remain mounted?",
 )
+@click.option(
+    "-p",
+    "--porcelain",
+    is_flag=True,
+    default=False,
+    help="Machine-readable output (no formatting)",
+)
 @click.pass_context
 def rotate(
     ctx,
     year,
     month,
     keep,
+    porcelain,
 ):
     """
     Deepfreeze rotation (add a new repo and age oldest off)
@@ -260,6 +268,7 @@ def rotate(
         "year": year,
         "month": month,
         "keep": keep,
+        "porcelain": porcelain,
     }
     action = CLIAction(
         ctx.info_name,
@@ -365,16 +374,25 @@ def status(
     default=None,
     help="Override retention period for refrozen thaw requests (default: from config, typically 35 days)",
 )
+@click.option(
+    "-p",
+    "--porcelain",
+    is_flag=True,
+    default=False,
+    help="Machine-readable output (no formatting)",
+)
 @click.pass_context
 def cleanup(
     ctx,
     refrozen_retention_days,
+    porcelain,
 ):
     """
     Clean up expired thawed repositories
     """
     manual_options = {
         "refrozen_retention_days": refrozen_retention_days,
+        "porcelain": porcelain,
     }
     action = CLIAction(
         ctx.info_name,