refactor(#2464): rename hive-ag3nt crate to hive-agent, collapse lib into main

nix/packages/assets.nix

@@ -19,16 +19,16 @@
 stdenv.mkDerivation {
   pname = "hyperhive-assets";
   version = "0.1.0";
-  # Narrow `srcs` (branding/ + hive-ag3nt/prompts/) is what decouples
+  # Narrow `srcs` (branding/ + hive-agent/prompts/) is what decouples
   # this derivation's input hash from the rest of the tree.
   srcs = [
     ../../branding
-    ../../hive-ag3nt/prompts
+    ../../hive-agent/prompts
   ];
   unpackPhase = ''
     runHook preUnpack
     cp -r ${../../branding} branding
-    cp -r ${../../hive-ag3nt/prompts} prompts
+    cp -r ${../../hive-agent/prompts} prompts
     chmod -R u+w branding prompts
     runHook postUnpack
   '';

nix/packages/default.nix

@@ -43,7 +43,7 @@ let
   #
   # Tests are kept in the separate `checks.cargo-test` derivation
   # (carries the hyperhive-assets build input for the prompt-template
-  # assertions in hive-ag3nt::prompt::tests). Keeping them out of this
+  # assertions in hive-agent::prompt::tests). Keeping them out of this
   # derivation means a prompt edit doesn't bust the cargo cache.
   workspaceBuild = craneLib.buildPackage {
     src = cleanSrc;
@@ -160,7 +160,7 @@ in
   # `preBuildAgentTemplates` option on the hive-c0re module —
   # see nix/host-modules/hive-c0re.nix). Speeds up the first agent
   # spawn dramatically because the heavy lifting (nixpkgs +
-  # claude-code + hive-ag3nt binary) is already in the store
+  # claude-code + hive-agent binary) is already in the store
   # when the meta evaluator goes to build the container.
   #
   # nixosConfigurations are pinned to x86_64-linux (nixos-

nix/packages/hive-xdg-icons.nix

@@ -14,7 +14,7 @@
 #   $out/share/icons/hicolor/<N>x<N>/apps/hyperhive.png  (N = 16,32,48,64,128,256)
 #   $out/share/pixmaps/hyperhive.png                     (48px fallback)
 #   $out/share/applications/hive-c0re.desktop
-#   $out/share/applications/hive-ag3nt.desktop
+#   $out/share/applications/hive-agent.desktop
 stdenv.mkDerivation {
   pname = "hive-xdg-icons";
   version = "0.1.0";
@@ -62,11 +62,11 @@ stdenv.mkDerivation {
     NoDisplay=true
     StartupNotify=false
     EOF
-        cat > "$out/share/applications/hive-ag3nt.desktop" <<EOF
+        cat > "$out/share/applications/hive-agent.desktop" <<EOF
     [Desktop Entry]
     Type=Application
     Name=hyperhive agent
-    GenericName=hive-ag3nt
+    GenericName=hive-agent
     Comment=hyperhive per-agent harness (claude turn loop + MCP server)
     Exec=hive serve
     Icon=hyperhive