feat(core): add session metadata support (#23068)

Co-authored-by: Aiden Cline <aidenpcline@gmail.com>

packages/opencode/src/server/routes/instance/httpapi/groups/session.ts

@@ -45,6 +45,7 @@ export const MessagesQuery = Schema.Struct({
 export const StatusMap = Schema.Record(Schema.String, SessionStatus.Info)
 export const UpdatePayload = Schema.Struct({
   title: Schema.optional(Schema.String),
+  metadata: Schema.optional(Session.Metadata),
   permission: Schema.optional(Permission.Ruleset),
   time: Schema.optional(
     Schema.Struct({

packages/opencode/src/server/routes/instance/httpapi/handlers/session.ts

@@ -185,6 +185,9 @@ export const sessionHandlers = HttpApiBuilder.group(InstanceHttpApi, "session",
       if (ctx.payload.title !== undefined) {
         yield* session.setTitle({ sessionID: ctx.params.sessionID, title: ctx.payload.title })
       }
+      if (ctx.payload.metadata !== undefined) {
+        yield* session.setMetadata({ sessionID: ctx.params.sessionID, metadata: ctx.payload.metadata })
+      }
       if (ctx.payload.permission !== undefined) {
         yield* session.setPermission({
           sessionID: ctx.params.sessionID,
@@ -202,7 +205,10 @@ export const sessionHandlers = HttpApiBuilder.group(InstanceHttpApi, "session",
       payload?: typeof ForkPayload.Type
     }) {
       return yield* SessionError.mapStorageNotFound(
-        session.fork({ sessionID: ctx.params.sessionID, messageID: ctx.payload?.messageID }),
+        session.fork({
+          sessionID: ctx.params.sessionID,
+          messageID: ctx.payload?.messageID,
+        }),
       )
     })