add: upload new research files

[mayuxi987]

No description provided.

[gemini-code-assist]

Code Review

This pull request introduces a comprehensive set of demo and tutorial materials for a Claude Code engineering lecture, including a mock training script, configuration files (CLAUDE.md, settings.json), custom skills, presentation slides, and speaker notes. The review feedback highlights several robust improvements for the Python script and configuration: initializing the loss variable in train.py to avoid a potential NameError when epochs is non-positive, separating imports to adhere to PEP 8, explicitly defining the UTF-8 encoding when writing JSON files, and quoting the $CLAUDE_TOOL_INPUT shell variable in settings.json to prevent shell-splitting bugs.

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[gemini-code-assist]

If epochs is set to 0 or a negative value, the training loop will not execute, and the variable loss will never be defined. This will result in a NameError when attempting to round and log loss after the loop. Initializing loss beforehand prevents this potential runtime crash.

Suggested change

	best_acc = 0.0
	for ep in range(1, epochs + 1):
	best_acc = 0.0
	loss = 0.0
	for ep in range(1, epochs + 1):

[gemini-code-assist]

According to PEP 8, imports should be on separate lines rather than grouped on a single line. This improves readability and makes tracking changes easier.

import argparse
import json
import random
import time

References

1. PEP 8: Imports should usually be on separate lines. ^(link)

[gemini-code-assist]

When writing text files, it is highly recommended to specify an explicit encoding (such as 'utf-8') rather than relying on the platform's default encoding. This prevents potential encoding issues on different operating systems (e.g., Windows).

Suggested change

	out.write_text(json.dumps(results, indent=2))
	out.write_text(json.dumps(results, indent=2), encoding="utf-8")

[gemini-code-assist]

The shell variable $CLAUDE_TOOL_INPUT is unquoted inside the subshell. If the JSON input contains spaces, wildcards, or other shell-active characters, the shell will perform word splitting and globbing, which can lead to syntax errors or unexpected behavior. Wrapping it in double quotes ensures robust execution.

Suggested change

	"command": "echo '[hook] File modified: checking Python syntax...' && python3 -m py_compile \"$(echo $CLAUDE_TOOL_INPUT | python3 -c \"import sys,json; d=json.load(sys.stdin); print(d.get('file_path',''))\" 2>/dev/null || echo '')\" 2>&1 | head -5 || true"
	"command": "echo '[hook] File modified: checking Python syntax...' && python3 -m py_compile \"$(echo \\\"$CLAUDE_TOOL_INPUT\\\" | python3 -c \"import sys,json; d=json.load(sys.stdin); print(d.get('file_path',''))\" 2>/dev/null || echo '')\" 2>&1 | head -5 || true"