docs: add context composition redesign spec

config.toml

@@ -13,6 +13,7 @@ use_default_base_prompt = true
 [projects]
 paths = [
     "C:/projects/gencpp/.ai/gencpp_sloppy.toml",
+    "C:/projects/manual_slop/manual_slop.toml",
 ]
 active = "C:/projects/gencpp/.ai/gencpp_sloppy.toml"
 
@@ -55,7 +56,7 @@ Theme = true
 Diagnostics = false
 "External Tools" = false
 "Shader Editor" = false
-"Undo/Redo History" = false
+"Undo/Redo History" = true
 
 [theme]
 palette = "Nord Dark"
@@ -77,7 +78,7 @@ logs_dir = "C:\\projects\\manual_slop\\logs"
 scripts_dir = "C:\\projects\\manual_slop\\scripts"
 
 [rag]
-enabled = false
+enabled = true
 embedding_provider = "local"
 chunk_size = 1000
 chunk_overlap = 200