Pre-0.1 cleanup: fmt, docs, licenses, AUR-ready packaging

- cargo fmt across the workspace (the CI gate the last push tripped).
- varde-daemon: drop the now-unused bytes dependency.
- varde-ctl(1): document push; gc reflects the continuous-sweep
  reality; subscribe mentions push events.
- config.toml example: gc_interval_secs, and an honest note that
  max_download_bytes_per_sec is currently unenforced.
- LICENSE-MIT + LICENSE-APACHE at the root (the declared license now
  ships as files), bundled into release tarballs and installed by the
  PKGBUILD.
- PKGBUILD: real maintainer, AUR pre-flight note (updpkgsums), license
  installation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

dist/varde-ctl.1.scd

@@ -67,12 +67,21 @@ subcommand maps 1:1 onto a request.
 *peer list*
 	Trusted peers and whether they are currently present on the LAN.
 
+*push* _HASH_ _NODE-ID_
+	Hand fully-present content to a trusted peer, unprompted. Consent
+	is mutual: the sender pushes only to trusted peers, and the
+	receiver accepts only from peers it trusts, pinning what it
+	accepted. The reply confirms verified delivery.
+
 *gc*
-	Drop all blobs not reachable from a pin. Never runs implicitly.
+	Reports unimplemented since the move to iroh-blobs 0.103: garbage
+	collection runs continuously inside the store (see
+	*gc_interval_secs* in the config), protecting pins, tags and
+	in-flight imports on every sweep.
 
 *subscribe*
 	Stream daemon events (transfer progress, peer presence, pin
-	completion) as JSON lines until interrupted.
+	completion, received pushes) as JSON lines until interrupted.
 
 # EXIT STATUS