fix: clean up 49 unused variables, catch params, and stale imports (#22695)

packages/opencode/src/session/prompt.ts

@@ -1825,7 +1825,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
     onSuccess: (output: unknown) => void
   }): AITool {
     // Remove $schema property if present (not needed for tool input)
-    const { $schema, ...toolSchema } = input.schema
+    const { $schema: _, ...toolSchema } = input.schema
 
     return tool({
       id: "StructuredOutput" as any,