Add Claude Code configuration and documentation (#2152)

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

.claude/CLAUDE.md

@@ -1,9 +1,5 @@
 # CLAUDE.md
 
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
-
-## Project Overview
-
 WrenAI is an open-source GenBI (Generative BI) agent that converts natural language questions into SQL queries and charts. It uses a semantic layer (MDL - Metadata Definition Language) to guide LLM-powered text-to-SQL generation via retrieval-augmented generation (RAG).
 
 ## Repository Structure

.claude/settings.json

@@ -0,0 +1,19 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(cd wren-ui && yarn:*)",
+      "Bash(cd wren-ai-service && just:*)",
+      "Bash(cd wren-ai-service && poetry run:*)",
+      "Bash(cd wren-ai-service && poetry install:*)",
+      "Bash(cd wren-launcher && make:*)",
+      "Bash(git status:*)",
+      "Bash(git diff:*)",
+      "Bash(git log:*)",
+      "Bash(git branch:*)",
+      "Bash(gh pr:*)",
+      "Bash(gh run:*)",
+      "Bash(ls:*)",
+      "Bash(wc:*)"
+    ]
+  }
+}