cli: the binary is syn

It was built as syn-cli while every message it prints, and the daemon's,
tells the user to run `syn …`. The [[bin]] is now syn (the package stays
syn-cli, so -p syn-cli still selects it), and the justfile recipes, the
integration tests' CARGO_BIN_EXE lookup and the flake's package follow —
nix's default package is now .#syn.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

flake.nix

@@ -115,7 +115,7 @@
           doInstallCargoArtifacts = false;
         } // extraArgs);
 
-        syn-cli = mkBin "syn-cli" {};
+        syn = mkBin "syn" {};
         syn-tui = mkBin "syn-tui" {};
         syn-gui = mkBin "syn-gui" {
           # gui-app is excluded from the workspace's `default-members` (see
@@ -192,8 +192,8 @@
         '';
       in {
         packages = {
-          inherit syn-cli syn-tui syn-gui;
-          default = syn-cli;
+          inherit syn syn-tui syn-gui;
+          default = syn;
         };
 
         devShells.default = pkgs.mkShell {

justfile

@@ -181,7 +181,7 @@ build-gui:
 [group: "run-cli"]
 [env("RUST_LOG", "info")]
 cli *args:
-    cargo run --manifest-path rust/Cargo.toml --bin syn-cli -- {{args}}
+    cargo run --manifest-path rust/Cargo.toml --bin syn -- {{args}}
 
 # test/store-dirs/ is gitignored and not created by any recipe — run
 # `just init-test-ensemble-cli test/store-dirs/canonical` once beforehand.
@@ -518,8 +518,8 @@ test-env-daemon-b dir="test-nodes":
 test-env-daemon-b-skewed dir="test-nodes" offset="+3 days":
     #!/usr/bin/env bash
     set -euo pipefail
-    cd rust && cargo build --bin syn-cli && cd ..
-    run=(faketime -m "{{offset}}" rust/target/debug/syn-cli --store "{{dir}}/node_b" daemon start --foreground)
+    cd rust && cargo build --bin syn && cd ..
+    run=(faketime -m "{{offset}}" rust/target/debug/syn --store "{{dir}}/node_b" daemon start --foreground)
     export FAKETIME_DONT_FAKE_MONOTONIC=1
     if command -v faketime >/dev/null 2>&1; then
         exec "${run[@]}"

rust/cli-app/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [[bin]]
-name = "syn-cli"
+name = "syn"
 path = "src/main.rs"
 
 [dependencies]

rust/cli-app/tests/common.rs

@@ -124,7 +124,7 @@ pub fn setup_shared_ensemble(paths: &[&Path]) {
 
 /// Build a `syn` command pointing at the given store path.
 pub fn syn_cmd(store_path: &Path) -> Command {
-    let mut cmd = Command::new(env!("CARGO_BIN_EXE_syn-cli"));
+    let mut cmd = Command::new(env!("CARGO_BIN_EXE_syn"));
     cmd.arg("--store").arg(store_path);
     cmd
 }