deps: replace tracing with log+env_logger, drop console-subscriber

Switch all tracing::{info,warn,error} to log::{info,warn,error}.
Replace tracing_subscriber::fmt::init() with env_logger::init().
Drop tracing, tracing-subscriber, tracing-appender as direct deps.
Drop console feature from jobkit (was pulling in console-subscriber
which pulled in tracing-subscriber).

tracing still compiled as transitive dep of reqwest and tui-markdown,
but our code no longer depends on it.

Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>

src/claude/rpc.rs

@@ -11,7 +11,7 @@ use daemon_capnp::daemon;
 use capnp::capability::Promise;
 use std::cell::RefCell;
 use std::rc::Rc;
-use tracing::info;
+use log::info;
 
 pub struct DaemonImpl {
     state: Rc<RefCell<idle::State>>,