Initial commit, porting over some existing code from tributarydb

Author: zfarrell

.cargo/config.toml

@@ -0,0 +1,2 @@
+[build]
+rustc-wrapper = "sccache"

.dockerignore

@@ -0,0 +1,12 @@
+target/
+!target/release/
+!target/release/server
+.git/
+.gitignore
+*.db
+cache/
+state/
+venv/
+__pycache__/
+*.pyc
+.DS_Store

.gitignore

@@ -0,0 +1,19 @@
+# Worktrees
+.worktrees/
+
+# Rust
+/target/
+
+# IDE
+.idea/
+*.iml
+.vscode/
+
+# OS
+.DS_Store
+
+# Project-specific
+catalog.db*
+cache/
+state/
+

CLAUDE.md

@@ -0,0 +1,19 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+A federated query engine built with Rust/DataFusion that provides on-demand caching of remote databases. The engine discovers remote tables, syncs them to local Parquet cache, and executes SQL queries through DataFusion.
+
+## Git Commits
+
+Use conventional format: `<type>(<scope>): <subject>` where type = feat|fix|docs|style|refactor|test|chore|perf. Subject: 50 chars max, imperative mood ("add" not "added"), no period. For small changes: one-line commit only. For complex changes: add body explaining what/why (72-char lines) and reference issues. Keep commits atomic (one logical change) and self-explanatory. Split into multiple commits if addressing different concerns. Don't mention anthropic or claude (no co-author).
+
+## Tools
+
+Use `rg` not grep, `fd` not find, `tree` is installed
+
+## Tests
+
+Implement comprehensive tests. Design tests that are meaningful and accurately reflect real usage.