init: archlens — architecture diagram generator

Hex arch + DDD, tree-sitter parsing, Mermaid/ASCII output.
Supports Rust + Python. 92 tests. CI, diff, --check for staleness detection.

Cargo.toml

@@ -0,0 +1,59 @@
+[workspace]
+resolver = "2"
+members = [
+    "crates/domain",
+    "crates/application",
+    "crates/presentation",
+    "crates/adapters/tree-sitter",
+    "crates/adapters/walkdir",
+    "crates/adapters/mermaid",
+    "crates/adapters/ascii",
+    "crates/adapters/file-writer",
+    "crates/adapters/stdout-writer",
+    "crates/adapters/toml-config",
+    "crates/adapters/cargo-workspace",
+]
+
+[workspace.dependencies]
+# Internal crates
+archlens-domain = { path = "crates/domain" }
+archlens-application = { path = "crates/application" }
+archlens-tree-sitter = { path = "crates/adapters/tree-sitter" }
+archlens-walkdir = { path = "crates/adapters/walkdir" }
+archlens-mermaid = { path = "crates/adapters/mermaid" }
+archlens-ascii = { path = "crates/adapters/ascii" }
+archlens-file-writer = { path = "crates/adapters/file-writer" }
+archlens-stdout-writer = { path = "crates/adapters/stdout-writer" }
+archlens-toml-config = { path = "crates/adapters/toml-config" }
+archlens-cargo-workspace = { path = "crates/adapters/cargo-workspace" }
+
+# Error handling
+thiserror = "2"
+anyhow = "1"
+
+# Parsing
+tree-sitter = "0.24"
+tree-sitter-rust = "0.23"
+tree-sitter-python = "0.23"
+tree-sitter-c-sharp = "0.23"
+
+# File discovery
+walkdir = "2"
+ignore = "0.4"
+
+# Config
+toml = "0.8"
+serde = { version = "1", features = ["derive"] }
+
+# CLI
+clap = { version = "4", features = ["derive"] }
+
+# Observability
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+# Parallelism
+rayon = "1"
+
+# Testing
+tempfile = "3"