Canadian cities labeler over Bluesky DMs

Users DM @cities.pds.cosocial.ca their city and get a signed account label.
Serves com.atproto.label.queryLabels and subscribeLabels, built on jacquard.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "cities-labeler"
+version = "0.1.0"
+edition = "2024"
+publish = false
+default-run = "cities-labeler"
+
+[dependencies]
+anyhow = "1"
+axum = { version = "0.8", features = ["ws"] }
+dotenvy = "0.15"
+hex = "0.4"
+jacquard = { version = "=0.12.2", default-features = false, features = ["api_bluesky", "streaming"] }
+jacquard-axum = "=0.12.2"
+k256 = { version = "0.13", features = ["ecdsa"] }
+rand_core = { version = "0.6", features = ["getrandom"] }
+rusqlite = { version = "0.37", features = ["bundled"] }
+serde = { version = "1", features = ["derive"] }
+serde_ipld_dagcbor = "0.6"
+serde_json = "1"
+tokio = { version = "1", features = ["full"] }
+unicode-normalization = "0.1"