Migrate from internal modules to emcd-appcore package.

Replace internal application core modules (application, distribution,
preparation, state) with emcd-appcore~=1.0 dependency. Remove corresponding
internal module files and tests. Update imports throughout codebase to use
appcore instead of internal implementations.

This removes duplicate code and leverages the extracted appcore library for
common application infrastructure while preserving project-specific
functionality in nomina and imports modules.

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: emcd

pyproject.toml

@@ -18,13 +18,10 @@ dependencies = [
   'Jinja2',
   'absence~=1.1',
   'defusedxml',
+  'emcd-appcore~=1.0',
   'frigid~=4.1',
   'icecream-truck~=1.4',
-  'importlib-metadata', # TODO: Drop once we have separate appcore package.
-  'importlib-resources', # TODO: Drop once we have separate appcore package.
   'packaging',
-  'platformdirs', # TODO: Drop once we have separate appcore package.
-  'tomli', # TODO: Drop once we have separate appcore package.
   'typing-extensions',
   # --- BEGIN: Injected by Copier ---
   'tyro',

sources/emcdproj/__/__init__.py

@@ -21,9 +21,5 @@
 ''' Common constants, imports, and utilities. '''
 
 
-from .application import Information as ApplicationInformation
-from .distribution import Information as DistributionInformation
 from .imports import *
 from .nomina import *
-from .preparation import *
-from .state import Globals

sources/emcdproj/__/application.py

@@ -39,14 +39,15 @@
 
 from pathlib import Path
 
+import                      appcore
 import frigid as            immut
 import typing_extensions as typx
 # --- BEGIN: Injected by Copier ---
 import tyro
 # --- END: Injected by Copier ---
 
 from absence import Absential, absent, is_absent
-from platformdirs import PlatformDirs
+from appcore.state import Globals
 
 
 simple_tyro_class = tyro.conf.configure( )

sources/emcdproj/__/distribution.py

@@ -47,7 +47,7 @@ class Cli(
 ):
     ''' Various utilities for projects by Github user '@emcd'. '''
 
-    application: __.ApplicationInformation
+    application: __.appcore.ApplicationInformation
     # configfile: __.typx.Optional[ str ] = None
     display: _interfaces.ConsoleDisplay
     command: __.typx.Union[
@@ -103,7 +103,7 @@ def execute( ) -> None:
 
 
 async def _prepare(
-    application: __.ApplicationInformation,
+    application: __.appcore.ApplicationInformation,
     # configedits: __.DictionaryEdits,
     # environment: bool,
     exits: __.ctxl.AsyncExitStack,
@@ -112,7 +112,7 @@ async def _prepare(
     import ictruck
     # TODO: Finetune Icecream truck installation from CLI arguments.
     ictruck.install( trace_levels = 9 )
-    return await __.prepare(
+    return await __.appcore.prepare(
         application = application,
         # configedits = configedits,
         # environment = environment,