Initial commit: repo-vis — 3D codebase visualization

Rust (axum) backend with git clone / zip upload / SQLite cache.
Three.js frontend with D3 treemap layout and semantic zoom.
Docker deployment with musl static binary.

server/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "repo-vis-server"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+axum = { version = "0.8", features = ["multipart"] }
+tokio = { version = "1", features = ["full"] }
+tower-http = { version = "0.6", features = ["fs", "cors"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+rusqlite = { version = "0.32", features = ["bundled"] }
+walkdir = "2"
+sha2 = "0.10"
+hex = "0.4"
+zip = "2"
+tempfile = "3"
+tracing = "0.1"
+tracing-subscriber = "0.3"