Initial commit: doujinshi-dl generic plugin framework

History reset as part of DMCA compliance. The project has been
refactored into a generic, site-agnostic download framework.
Site-specific logic lives in separate plugin packages.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

doujinshi_dl/core/config.py

@@ -0,0 +1,16 @@
+# coding: utf-8
+"""Runtime configuration store for the main package.
+
+Plugins write their paths and settings here so that generic utilities
+(e.g. db.py) can read them without hard-coding any plugin name.
+"""
+
+_runtime: dict = {}
+
+
+def set(key: str, value) -> None:
+    _runtime[key] = value
+
+
+def get(key: str, default=None):
+    return _runtime.get(key, default)