feat(cli): graph register / --params accept the op-script form (fieldtest 0107 F5)

Both verbs now route through the same composite_from_any shape
discrimination file-mode --content-id shipped with (op-script array ->
one-build tail; envelope object -> loader), so the three on-ramp verbs
agree on accepted shapes and an op-script registers under the same
shape-invariant content id as its built envelope — no more raw serde
refusal ('invalid type: map, expected u32') hiding the graph build
bridge.

RED-first (tdd-author handoff): two same-seam behavioural pins
(register stores the envelope id for an op-script; --params matches
the envelope's axis lines) observed failing on the serde refusal, then
the two call sites rerouted.

Gates: workspace 990/0, clippy -D warnings clean.

closes #202

crates/aura-cli/tests/graph_construct.rs

@@ -605,3 +605,64 @@ fn graph_register_rejects_an_unknown_node_type_with_prose() {
         "names the unknown node type: {stderr}"
     );
 }
+
+/// Property (#202 headline, the on-ramp is shape-invariant): `aura graph register`
+/// accepts an op-script document (a JSON array) exactly as it accepts a #155
+/// blueprint envelope (a JSON object) — it shape-discriminates the array form,
+/// builds it through the same one-build tail, and stores it under the SAME content
+/// id it stores that op-script's `graph build` envelope under. The content id is
+/// shape-invariant (an op-script and its built envelope hash identically), so the
+/// two on-ramp shapes must agree on the store key; `register` must not reject the
+/// op-script with the raw serde `invalid type: map, expected u32` message the
+/// direct-`blueprint_from_json` path currently leaks.
+#[test]
+fn graph_register_accepts_an_op_script_and_stores_the_envelope_content_id() {
+    let dir = temp_cwd("register-op-script");
+    // The op-script form (a JSON array of ops), written to a file.
+    let op_script = dir.join("op-script.json");
+    std::fs::write(&op_script, SIGNAL_DOC).expect("write op-script fixture");
+    // Its `graph build` envelope (a JSON object), the shape `register` already accepts.
+    let (envelope_bytes, _e, built) = run(&["graph", "build"], SIGNAL_DOC);
+    assert!(built, "graph build produces the envelope");
+    let envelope = dir.join("envelope.json");
+    std::fs::write(&envelope, &envelope_bytes).expect("write envelope fixture");
+
+    // The envelope shape registers today (green sibling); the op-script must too.
+    let (env_out, env_err, env_code) =
+        run_in(&dir, &["graph", "register", envelope.to_str().unwrap()]);
+    assert_eq!(env_code, Some(0), "register envelope: {env_out} {env_err}");
+    let (op_out, op_err, op_code) =
+        run_in(&dir, &["graph", "register", op_script.to_str().unwrap()]);
+    assert_eq!(op_code, Some(0), "register op-script exits 0: {op_out} {op_err}");
+
+    assert_eq!(
+        registered_id(&op_out),
+        registered_id(&env_out),
+        "op-script and its built envelope register to the same content id"
+    );
+}
+
+/// Property (#202, the same on-ramp seam at the sibling verb): `aura graph
+/// introspect --params` accepts an op-script exactly as it accepts a blueprint
+/// envelope — the raw axis namespace it prints for the op-script equals the one it
+/// prints for that op-script's built envelope, both exit 0. Currently `--params`
+/// rejects the op-script with the same raw serde `invalid type: map, expected u32`
+/// message `register` does (both route through the direct `blueprint_from_json`).
+#[test]
+fn graph_params_accepts_an_op_script_matching_its_envelope() {
+    let dir = temp_cwd("params-op-script");
+    let op_script = dir.join("op-script.json");
+    std::fs::write(&op_script, SIGNAL_DOC).expect("write op-script fixture");
+    let (envelope_bytes, _e, built) = run(&["graph", "build"], SIGNAL_DOC);
+    assert!(built, "graph build produces the envelope");
+    let envelope = dir.join("envelope.json");
+    std::fs::write(&envelope, &envelope_bytes).expect("write envelope fixture");
+
+    let (env_out, env_err, env_code) =
+        run_in(&dir, &["graph", "introspect", "--params", envelope.to_str().unwrap()]);
+    assert_eq!(env_code, Some(0), "params on envelope: {env_out} {env_err}");
+    let (op_out, op_err, op_code) =
+        run_in(&dir, &["graph", "introspect", "--params", op_script.to_str().unwrap()]);
+    assert_eq!(op_code, Some(0), "params on op-script exits 0: {op_out} {op_err}");
+    assert_eq!(op_out, env_out, "op-script and envelope agree on the raw axis namespace");
+}