Lightweight caching and incremental processing

src/markitect_tool/__init__.py

@@ -20,6 +20,18 @@ from markitect_tool.contract import (
     validate_contract,
     validate_contract_file,
 )
+from markitect_tool.cache import (
+    CacheEntry,
+    CacheManifest,
+    CacheStatus,
+    build_cache,
+    cache_path_for,
+    detect_changes,
+    fingerprint_file,
+    load_cache,
+    save_cache,
+    scan_markdown_files,
+)
 from markitect_tool.diagnostics import Diagnostic, SourceLocation
 from markitect_tool.generation import (
     GeneratedDocument,
@@ -87,6 +99,16 @@ __all__ = [
     "load_contract_file",
     "validate_contract",
     "validate_contract_file",
+    "CacheEntry",
+    "CacheManifest",
+    "CacheStatus",
+    "build_cache",
+    "cache_path_for",
+    "detect_changes",
+    "fingerprint_file",
+    "load_cache",
+    "save_cache",
+    "scan_markdown_files",
     "Diagnostic",
     "SourceLocation",
     "GeneratedDocument",