channel architecture: wire protocol, daemons, supervisor

Design and implement the channel system for external communications:

- schema/channel.capnp: wire protocol for channel daemons
  (recv with all_new/min_count, send, subscribe, list)
- channels/irc/: standalone IRC daemon crate (consciousness-channel-irc)
- channels/telegram/: standalone Telegram daemon crate
  (consciousness-channel-telegram)
- src/thalamus/channels.rs: client connecting to daemon sockets
- src/thalamus/supervisor.rs: daemon lifecycle with file locking
  for multi-instance safety

Channel daemons listen on ~/.consciousness/channels/*.sock,
configs in *.json5, supervisor discovers and starts them.
IRC/Telegram modules removed from thalamus core — they're
now independent daemons that survive consciousness restarts.

Also: delete standalone tui.rs (moved to consciousness F4/F5),
fix build warnings, add F5 thalamus screen with channel status.

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

Cargo.lock

@@ -583,6 +583,46 @@ dependencies = [
  "static_assertions",
 ]
 
+[[package]]
+name = "consciousness-channel-irc"
+version = "0.4.0"
+dependencies = [
+ "capnp",
+ "capnp-rpc",
+ "dirs",
+ "futures",
+ "json5",
+ "libc",
+ "poc-memory",
+ "rustls",
+ "serde",
+ "serde_json",
+ "tokio",
+ "tokio-rustls",
+ "tokio-util",
+ "tracing",
+ "tracing-subscriber",
+ "webpki-roots",
+]
+
+[[package]]
+name = "consciousness-channel-telegram"
+version = "0.4.0"
+dependencies = [
+ "capnp",
+ "capnp-rpc",
+ "dirs",
+ "futures",
+ "poc-memory",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "tokio",
+ "tokio-util",
+ "tracing",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "console-api"
 version = "0.8.1"