chore(v1.1.9): clippy clean — workspace -D warnings

Surfaced + fixed during the F3 attestation:

- executor-core/sdk/queue.rs: drop redundant .map(|()| ()) call sites;
  enqueue_blocking discards QueueMessageId via .map(|_id| ()) (intentional)
- executor-core/sdk/retry.rs: hoist use std::collections::hash_map::DefaultHasher
  + use std::hash::Hasher to the top of the file (clippy::items_after_statements);
  replace `as i64` casts with i64::try_from + clear comment about jitter
  bound (clippy::cast_possible_wrap)
- executor-core/sdk/invoke.rs: move _LIMITS_IS_COPY const before #[cfg(test)]
  mod tests (clippy::items_after_test_module)
- manager-core/dispatcher.rs: dispatch_one_queue gains #[allow(too_many_lines)]
  (it's the queue tick's whole logic — split makes it less readable than
  the lint); .map(...).unwrap_or(default) → .map_or(default, ...)
- picloud/lib.rs: Limits { trigger_depth_max, ..Limits::default() } via
  struct-update instead of let-mut-assign (clippy::field_reassign_with_default)
- tests: r#"..."# → r"..." where there are no `"` inside (clippy::needless_raw_string_hashes);
  combine InvokeTarget::Name | InvokeTarget::Path arms with identical bodies
  in sdk_invoke.rs (clippy::match_same_arms)

cargo fmt --all -- --check 2>&1 | tail -3: no output (exit 0)
cargo clippy --workspace --all-targets --all-features -- -D warnings:
  Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
Workspace lib smoke: 432 passing (306 manager-core + 74 executor-core + 34 shared + 18 orchestrator-core).
DB-gated E2E (against docker compose postgres on localhost:15432):
  queue_e2e: 4 ok / invoke_e2e: 4 ok / retry_e2e: 3 ok / migration_queue_messages: 4 ok / schema_snapshot: 1 ok

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/executor-core/src/sdk/invoke.rs

@@ -257,7 +257,9 @@ fn args_to_json(value: &Dynamic) -> Result<Json, Box<EvalAltResult>> {
         return Ok(serde_json::Number::from_f64(f).map_or(Json::Null, Json::Number));
     }
     if value.is_string() {
-        return Ok(Json::String(value.clone().into_string().unwrap_or_default()));
+        return Ok(Json::String(
+            value.clone().into_string().unwrap_or_default(),
+        ));
     }
     if let Some(arr) = value.clone().try_cast::<Array>() {
         let mut out = Vec::with_capacity(arr.len());
@@ -276,6 +278,14 @@ fn args_to_json(value: &Dynamic) -> Result<Json, Box<EvalAltResult>> {
     Ok(Json::String(value.to_string()))
 }
 
+/// `Limits` is `Copy`; passed by value into `register` so closures take
+/// owned copies. Hint for readers wondering why it doesn't need `Arc`.
+#[allow(dead_code)]
+const _LIMITS_IS_COPY: fn() = || {
+    fn assert_copy<T: Copy>() {}
+    assert_copy::<Limits>();
+};
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -320,11 +330,3 @@ mod tests {
         assert_eq!(j, serde_json::json!({ "x": 42 }));
     }
 }
-
-/// `Limits` is `Copy`; passed by value into `register` so closures take
-/// owned copies. Hint for readers wondering why it doesn't need `Arc`.
-#[allow(dead_code)]
-const _LIMITS_IS_COPY: fn() = || {
-    fn assert_copy<T: Copy>() {}
-    assert_copy::<Limits>();
-};