chore: sync repository to current working state

Brings azcomputerguru/guru-connect up to the authoritative working copy that
had been maintained in the claudetools monorepo: Phase 1 security and
infrastructure (middleware, metrics, utils, token blacklist, deployment
scripts, security audits) plus the native-remote-control integration spec.
Preserves the repo .gitignore, .cargo, and server/static/downloads.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

server/Cargo.toml

@@ -13,6 +13,7 @@ tokio = { version = "1", features = ["full", "sync", "time", "rt-multi-thread",
 axum = { version = "0.7", features = ["ws", "macros"] }
 tower = "0.5"
 tower-http = { version = "0.6", features = ["cors", "trace", "compression-gzip", "fs"] }
+tower_governor = { version = "0.4", features = ["axum"] }
 
 # WebSocket
 futures-util = "0.3"
@@ -54,6 +55,9 @@ uuid = { version = "1", features = ["v4", "serde"] }
 chrono = { version = "0.4", features = ["serde"] }
 rand = "0.8"
 
+# Monitoring
+prometheus-client = "0.22"
+
 [build-dependencies]
 prost-build = "0.13"