Clean up root files: gitignore, favicon, pyproject (#222)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: natolambert

.gitignore

@@ -18,6 +18,7 @@ arxiv_check_results.json
 .claude
 
 # Python/uv
+.python-version
 uv.lock
 code/uv.lock
 __pycache__/

.python-version

@@ -207,14 +207,14 @@ $(BUILD)/pdf/$(OUTPUT_FILENAME).pdf:	$(PDF_DEPENDENCIES)
 	$(CONTENT) | $(CONTENT_FILTERS) | $(PANDOC_COMMAND) $(ARGS) $(PDF_ARGS) --resource-path=book -o $@
 	$(ECHO_BUILT)
 
-# copy faveicon.ico to build/ and into  build/c/ with bash commands
+# copy favicon.ico to build/ and into build/c/ with bash commands
 # also copy from build/pdf/book.pdf into build/html/
 # then copy images dir to build/html/chapters/
 files:
-	test -f favicon.ico || (echo "favicon.ico not found" && exit 1)
+	test -f book/favicon.ico || (echo "book/favicon.ico not found" && exit 1)
 	mkdir -p $(BUILD)/html/c/
-	cp favicon.ico $(BUILD)/html/ || echo "Failed to copy to $(BUILD)/html/"
-	cp favicon.ico $(BUILD)/html/c/ || echo "Failed to copy to $(BUILD)/html/c/"
+	cp book/favicon.ico $(BUILD)/html/ || echo "Failed to copy to $(BUILD)/html/"
+	cp book/favicon.ico $(BUILD)/html/c/ || echo "Failed to copy to $(BUILD)/html/c/"
 	cp -R book/preorder $(BUILD)/html/ || echo "Failed to copy preorder static pages"
 	cp $(BUILD)/pdf/book.pdf $(BUILD)/html/ || echo "Failed to copy to $(BUILD)/html/"
 	cp $(BUILD)/epub/book.epub $(BUILD)/html/ || echo "Failed to copy EPUB to $(BUILD)/html/"

Makefile

@@ -1,10 +1,15 @@
+# Root pyproject.toml - for diagram generation and book build scripts
+# Note: code/ has its own pyproject.toml for ML dependencies
 [project]
 name = "rlhf-book"
 version = "0.1.0"
-description = "RLHF Book build scripts"
+description = "RLHF Book - diagrams and build scripts"
 requires-python = ">=3.11,<3.14"
 dependencies = [
+    # Diagram generation (diagrams/)
     "google-generativeai>=0.8.6",
     "matplotlib>=3.10.8",
     "transformers>=4.57.5",
+    # Library data generation (book/scripts/generate_library.py)
+    "datasets>=2.19.0",
 ]