add deprecated model fallback chain resolution

models can now be marked `deprecated: true` with a `fallback` slug
pointing to a replacement. `resolveCliModel` follows the chain
recursively (with cycle detection) until it finds a non-deprecated
model. this keeps deprecated models in the registry for backward
compatibility instead of removing them.

marks opencode/mimo-v2-pro-free as deprecated with fallback to
opencode/nemotron-3-super-free.

Made-with: Cursor

post

@@ -37686,7 +37686,9 @@ var providers = {
         displayName: "MiMo V2 Pro",
         resolve: "opencode/mimo-v2-pro-free",
         envVars: [],
-        isFree: true
+        isFree: true,
+        deprecated: true,
+        fallback: "opencode/nemotron-3-super-free"
       },
       "minimax-m2.5-free": {
         displayName: "MiniMax M2.5",
@@ -37773,7 +37775,9 @@ var modelAliases = Object.entries(providers).flatMap(
     resolve: def.resolve,
     openRouterResolve: def.openRouterResolve,
     preferred: def.preferred ?? false,
-    isFree: def.isFree ?? false
+    isFree: def.isFree ?? false,
+    deprecated: def.deprecated ?? false,
+    fallback: def.fallback
   }))
 );
 
@@ -41557,7 +41561,7 @@ var core3 = __toESM(require_core(), 1);
 // package.json
 var package_default = {
   name: "@pullfrog/pullfrog",
-  version: "0.0.188",
+  version: "0.0.189",
   type: "module",
   files: [
     "index.js",