refactor(stdlib): de-abbreviate namespaces (Mem/Sys/Net/Collide)

Expand the abbreviated public namespaces to full words, part of the
language-wide de-abbreviation pass:
  Mem -> Memory, Sys -> System, Net -> Network, Collide -> Collision

Math stays (universally accepted, like int/bool). Renames the dispatch
strings, LSP signatures, docs (dirs, files, frontmatter), and the
inventory manifest; behavior is byte-identical (the bare rt_ targets are
unchanged). Reseeded; C-free bootstrap fixpoint holds; all suites green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/language/network/_section.md

@@ -0,0 +1,7 @@
+---
+id: network
+title: Network
+order: 6
+---
+
+The low-level networking seam — send and poll datagrams, serialize and apply entity state, and read ownership and role. Offline these collapse to single-player defaults.

docs/language/network/network-apply.md

@@ -0,0 +1,14 @@
+---
+id: network-apply
+name: Network.apply
+category: network
+kind: namespace-method
+tokens: Network.apply
+sig: Network.apply(entity, buf) -> int
+tip: Apply serialized state to an entity.
+order: 3
+ns: Network
+member: apply
+---
+
+Reads synced fields from <code>buf</code> into <code>entity</code> — the inverse of <code>Network.serialize</code>.

docs/language/network/network-is_owner.md

@@ -0,0 +1,14 @@
+---
+id: network-is_owner
+name: Network.is_owner
+category: network
+kind: namespace-method
+tokens: Network.is_owner
+sig: Network.is_owner(entity) -> bool
+tip: Does this peer own the entity?
+order: 7
+ns: Network
+member: is_owner
+---
+
+Returns true when this peer owns <code>entity</code> — <code>owner(entity) == local_id()</code>.

docs/language/network/network-is_server.md

@@ -0,0 +1,14 @@
+---
+id: network-is_server
+name: Network.is_server
+category: network
+kind: namespace-method
+tokens: Network.is_server
+sig: Network.is_server() -> bool
+tip: Is this peer the server?
+order: 6
+ns: Network
+member: is_server
+---
+
+Returns true on the authoritative peer. Offline it is true, so server-only guards run in single-player.

docs/language/network/network-local_id.md

@@ -0,0 +1,14 @@
+---
+id: network-local_id
+name: Network.local_id
+category: network
+kind: namespace-method
+tokens: Network.local_id
+sig: Network.local_id() -> int
+tip: This peer's own id.
+order: 8
+ns: Network
+member: local_id
+---
+
+Returns the network id of the local peer.

docs/language/network/network-owner.md

@@ -0,0 +1,14 @@
+---
+id: network-owner
+name: Network.owner
+category: network
+kind: namespace-method
+tokens: Network.owner
+sig: Network.owner(entity) -> int
+tip: The peer that owns an entity.
+order: 4
+ns: Network
+member: owner
+---
+
+Returns the peer id that owns <code>entity</code>'s <code>@Owned</code> state.

docs/language/network/network-poll.md

@@ -0,0 +1,14 @@
+---
+id: network-poll
+name: Network.poll
+category: network
+kind: namespace-method
+tokens: Network.poll
+sig: Network.poll(buf, cap) -> int
+tip: Read an inbound datagram.
+order: 1
+ns: Network
+member: poll
+---
+
+Reads up to <code>cap</code> bytes of the next inbound datagram into <code>buf</code> and returns the byte count, or zero when none is waiting.

docs/language/network/network-send.md

@@ -0,0 +1,14 @@
+---
+id: network-send
+name: Network.send
+category: network
+kind: namespace-method
+tokens: Network.send
+sig: Network.send(peer, buf, len) -> void
+tip: Put a datagram on the wire.
+order: 0
+ns: Network
+member: send
+---
+
+Sends the first <code>len</code> bytes of <code>buf</code> to <code>peer</code>. Absent a real socket it uses the built-in loopback, so offline code still runs.

docs/language/network/network-serialize.md

@@ -0,0 +1,14 @@
+---
+id: network-serialize
+name: Network.serialize
+category: network
+kind: namespace-method
+tokens: Network.serialize
+sig: Network.serialize(entity, buf) -> int
+tip: Serialize an entity's synced state.
+order: 2
+ns: Network
+member: serialize
+---
+
+Writes the <code>@Sync</code> fields of <code>entity</code> into <code>buf</code> and returns the byte count, for sending over the wire.

docs/language/network/network-set_owner.md

@@ -0,0 +1,14 @@
+---
+id: network-set_owner
+name: Network.set_owner
+category: network
+kind: namespace-method
+tokens: Network.set_owner
+sig: Network.set_owner(entity, peer) -> void
+tip: Assign ownership of an entity.
+order: 5
+ns: Network
+member: set_owner
+---
+
+Sets the owning peer of <code>entity</code> to <code>peer</code>.