fix: expose dynamic provider profiles in backends list

src/common/backend-profiles.ts

@@ -70,6 +70,17 @@ export const backendProfileSpecs = builtinBackendProfileSpecs;
 
 export const backendProfiles = builtinBackendProfileSpecs.map((item) => item.profile) as readonly BackendProfile[];
 
+export function compareBackendProfiles(left: string, right: string): number {
+  const leftIndex = builtinBackendProfileSpecs.findIndex((item) => item.profile === left);
+  const rightIndex = builtinBackendProfileSpecs.findIndex((item) => item.profile === right);
+  if (leftIndex >= 0 || rightIndex >= 0) {
+    if (leftIndex < 0) return 1;
+    if (rightIndex < 0) return -1;
+    if (leftIndex !== rightIndex) return leftIndex - rightIndex;
+  }
+  return left.localeCompare(right);
+}
+
 export function defaultSecretNameForProfile(profile: string): string {
   return `agentrun-v01-provider-${profile}`;
 }
@@ -138,8 +149,14 @@ export function mergeBackendCapability(profile: string, storedCapabilities: Json
   };
 }
 
-export function backendCapabilities(): JsonRecord[] {
-  return builtinBackendProfileSpecs.map(backendCapability);
+export function backendCapabilities(profiles: readonly string[] = backendProfiles): JsonRecord[] {
+  const profileIds = new Set<BackendProfile>(backendProfiles);
+  for (const profile of profiles) {
+    if (isBackendProfileSlug(profile)) profileIds.add(profile as BackendProfile);
+  }
+  return [...profileIds]
+    .sort(compareBackendProfiles)
+    .map((profile) => backendCapability(backendProfileSpec(profile) as BackendProfileSpec));
 }
 
 export function backendCapabilitiesSqlValues(profiles?: readonly BackendProfile[], options: { requiredSecretKeysByProfile?: Record<string, readonly string[]> } = {}): string {