Remove redundant event type exclusion now it's handled on the runtime side

Co-Authored-By: SteveSandersonMS <1101362+SteveSandersonMS@users.noreply.github.com>

Author: SteveSandersonMS

scripts/codegen/csharp.ts

@@ -18,7 +18,6 @@ import {
     getSessionEventsSchemaPath,
     isNodeFullyExperimental,
     isRpcMethod,
-    EXCLUDED_EVENT_TYPES,
     REPO_ROOT,
     writeGeneratedFile,
     type ApiSchema,
@@ -240,8 +239,7 @@ function extractEventVariants(schema: JSONSchema7): EventVariant[] {
                 dataSchema,
                 dataDescription: dataSchema?.description,
             };
-        })
-        .filter((v) => !EXCLUDED_EVENT_TYPES.has(v.typeName));
+        });
 }
 
 /**

scripts/codegen/go.ts

@@ -13,7 +13,6 @@ import { FetchingJSONSchemaStore, InputData, JSONSchemaInput, quicktype } from "
 import { promisify } from "util";
 import {
     applyTitleSuggestions,
-    EXCLUDED_EVENT_TYPES,
     getApiSchemaPath,
     getRpcSchemaTypeName,
     getSessionEventsSchemaPath,
@@ -181,8 +180,7 @@ function extractGoEventVariants(schema: JSONSchema7): GoEventVariant[] {
                 dataSchema,
                 dataDescription: dataSchema.description,
             };
-        })
-        .filter((v) => !EXCLUDED_EVENT_TYPES.has(v.typeName));
+        });
 }
 
 /**

scripts/codegen/utils.ts

@@ -21,9 +21,6 @@ const __dirname = path.dirname(__filename);
 /** Root of the copilot-sdk repo */
 export const REPO_ROOT = path.resolve(__dirname, "../..");
 
-/** Event types to exclude from generation (internal/legacy types) */
-export const EXCLUDED_EVENT_TYPES = new Set(["session.import_legacy"]);
-
 // ── Schema paths ────────────────────────────────────────────────────────────
 
 export async function getSessionEventsSchemaPath(): Promise<string> {
@@ -49,7 +46,7 @@ export async function getApiSchemaPath(cliArg?: string): Promise<string> {
 
 /**
  * Post-process JSON Schema for quicktype compatibility.
- * Converts boolean const values to enum, filters excluded event types.
+ * Converts boolean const values to enum.
  */
 export function postProcessSchema(schema: JSONSchema7): JSONSchema7 {
     if (typeof schema !== "object" || schema === null) return schema;
@@ -81,18 +78,9 @@ export function postProcessSchema(schema: JSONSchema7): JSONSchema7 {
 
     for (const combiner of ["anyOf", "allOf", "oneOf"] as const) {
         if (processed[combiner]) {
-            processed[combiner] = processed[combiner]!
-                .filter((item) => {
-                    if (typeof item !== "object") return true;
-                    const typeConst = (item as JSONSchema7).properties?.type;
-                    if (typeof typeConst === "object" && "const" in typeConst) {
-                        return !EXCLUDED_EVENT_TYPES.has(typeConst.const as string);
-                    }
-                    return true;
-                })
-                .map((item) =>
-                    typeof item === "object" ? postProcessSchema(item as JSONSchema7) : item
-                ) as JSONSchema7Definition[];
+            processed[combiner] = processed[combiner]!.map((item) =>
+                typeof item === "object" ? postProcessSchema(item as JSONSchema7) : item
+            ) as JSONSchema7Definition[];
         }
     }