feat: allow read tool to handle images (#3052)

packages/opencode/src/provider/models.ts

@@ -28,6 +28,12 @@ export namespace ModelsDev {
         context: z.number(),
         output: z.number(),
       }),
+      modalities: z
+        .object({
+          input: z.array(z.enum(["text", "audio", "image", "video", "pdf"])),
+          output: z.array(z.enum(["text", "audio", "image", "video", "pdf"])),
+        })
+        .optional(),
       experimental: z.boolean().optional(),
       options: z.record(z.string(), z.any()),
       provider: z.object({ npm: z.string() }).optional(),

packages/opencode/src/provider/provider.ts

@@ -279,6 +279,11 @@ export namespace Provider {
               context: 0,
               output: 0,
             },
+          modalities: model.modalities ??
+            existing?.modalities ?? {
+              input: ["text"],
+              output: ["text"],
+            },
           provider: model.provider ?? existing?.provider,
         }
         parsed.models[modelID] = parsedModel