feat: add typed search attributes API

crates/client/src/lib.rs

@@ -1149,7 +1149,7 @@ where
                         .and_then(|d| d.try_into().ok()),
                     workflow_run_timeout: options.run_timeout.and_then(|d| d.try_into().ok()),
                     workflow_task_timeout: options.task_timeout.and_then(|d| d.try_into().ok()),
-                    search_attributes: options.search_attributes.map(|d| d.into()),
+                    search_attributes: options.search_attributes.map(|t| t.into_proto()),
                     cron_schedule: options.cron_schedule.unwrap_or_default(),
                     header: options.header.or(start_signal.header),
                     user_metadata,
@@ -1185,7 +1185,7 @@ where
                             .and_then(|d| d.try_into().ok()),
                         workflow_run_timeout: options.run_timeout.and_then(|d| d.try_into().ok()),
                         workflow_task_timeout: options.task_timeout.and_then(|d| d.try_into().ok()),
-                        search_attributes: options.search_attributes.map(|d| d.into()),
+                        search_attributes: options.search_attributes.map(|t| t.into_proto()),
                         cron_schedule: options.cron_schedule.unwrap_or_default(),
                         request_eager_execution: options.enable_eager_workflow_start,
                         retry_policy: options.retry_policy,

crates/client/src/options_structs.rs

@@ -6,7 +6,7 @@ use temporalio_common::{
     protos::temporal::api::{
         common::{
             self,
-            v1::{Header, Payload, Payloads},
+            v1::{Header, Payloads},
         },
         enums::v1::{
             ArchivalState, HistoryEventFilterType, QueryRejectCondition, WorkflowIdConflictPolicy,
@@ -15,6 +15,7 @@ use temporalio_common::{
         replication::v1::ClusterReplicationConfig,
         workflowservice::v1::RegisterNamespaceRequest,
     },
+    search_attributes::SearchAttributes,
     telemetry::metrics::TemporalMeter,
 };
 use tokio_rustls::rustls::client::danger::ServerCertVerifier;
@@ -286,8 +287,8 @@ pub struct WorkflowStartOptions {
     /// Optionally set a cron schedule for the workflow
     pub cron_schedule: Option<String>,
 
-    /// Optionally associate extra search attributes with a workflow
-    pub search_attributes: Option<HashMap<String, Payload>>,
+    /// Additional search attributes for the workflow.
+    pub search_attributes: Option<SearchAttributes>,
 
     /// Optionally enable Eager Workflow Start, a latency optimization using local workers
     /// NOTE: Experimental

crates/common-wasm/Cargo.toml

@@ -23,9 +23,14 @@ bon = { workspace = true }
 crc32fast = "1"
 derive_more = { workspace = true }
 erased-serde = "0.4"
+# Only the `alloc` feature is needed for RFC3339 formatting. Do NOT use
+# Utc::now() or other clock functions — they are unavailable in
+# wasm32-unknown-unknown without the `wasmbind` feature.
+chrono = { version = "0.4", default-features = false, features = ["alloc"] }
 futures = { version = "0.3", default-features = false, features = ["alloc"] }
 parking_lot = { version = "0.12" }
 prost = { workspace = true }
+prost-types = { workspace = true }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { workspace = true }
 thiserror = { workspace = true }

crates/common-wasm/src/lib.rs

@@ -16,11 +16,16 @@ pub mod protos {
 
     pub use temporalio_protos::*;
 }
+pub mod search_attributes;
 pub mod worker;
 mod workflow_definition;
 
 pub use activity_definition::{ActivityDefinition, ActivityError};
 pub use priority::Priority;
+pub use search_attributes::{
+    SearchAttributeError, SearchAttributeKey, SearchAttributeUpdate, SearchAttributeValue,
+    SearchAttributes, Timestamp,
+};
 pub use worker::WorkerDeploymentVersion;
 pub use workflow_definition::{
     HasWorkflowDefinition, QueryDefinition, SignalDefinition, UntypedWorkflow, UpdateDefinition,