fix: normalize Forgejo 'label_updated' to 'labeled' in context

Forgejo sends eventAction 'label_updated' instead of 'labeled' for
issue label events. Add FORGEJO_EVENT_ACTION_MAP in context.ts to
normalize at parse time (same pattern as event name normalization),
so all downstream code (trigger.ts, create-prompt) works unchanged.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/github/context.ts

@@ -68,10 +68,23 @@ const FORGEJO_EVENT_NAME_MAP: Record<string, string> = {
   pull_request_comment: "pull_request_review_comment",
 };
 
+/**
+ * Forgejo uses different action names for some webhook event actions.
+ * Normalize to GitHub-canonical names so all downstream code works unchanged.
+ */
+const FORGEJO_EVENT_ACTION_MAP: Record<string, string> = {
+  label_updated: "labeled",
+};
+
 function normalizeEventName(eventName: string): string {
   return FORGEJO_EVENT_NAME_MAP[eventName] ?? eventName;
 }
 
+function normalizeEventAction(action: string | undefined): string | undefined {
+  if (!action) return action;
+  return FORGEJO_EVENT_ACTION_MAP[action] ?? action;
+}
+
 const AUTOMATION_EVENT_NAMES = [
   "workflow_dispatch",
   "repository_dispatch",
@@ -149,7 +162,7 @@ export function parseGitHubContext(): GitHubContext {
 
   const commonFields = {
     runId: process.env.GITHUB_RUN_ID!,
-    eventAction: context.payload.action,
+    eventAction: normalizeEventAction(context.payload.action),
     repository: {
       owner: context.repo.owner,
       repo: context.repo.repo,

src/github/validation/trigger.ts

@@ -36,12 +36,7 @@ export function checkContainsTrigger(context: ParsedGitHubContext): boolean {
   }
 
   // Check for label trigger
-  // Forgejo sends "label_updated" instead of "labeled" for issue label events
-  if (
-    isIssuesEvent(context) &&
-    (context.eventAction === "labeled" ||
-      context.eventAction === "label_updated")
-  ) {
+  if (isIssuesEvent(context) && context.eventAction === "labeled") {
     const labelName = (context.payload as any).label?.name || "";
 
     if (labelTrigger && labelName === labelTrigger) {