Phase 1 complete: Refactored API Protocol from Interface to Zod schemas

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

content/docs/references/api/index.mdx

@@ -16,6 +16,7 @@ This section contains all protocol schemas for the api layer of ObjectStack.
   <Card href="./errors" title="Errors" description="Source: packages/spec/src/api/errors.zod.ts" />
   <Card href="./graphql" title="Graphql" description="Source: packages/spec/src/api/graphql.zod.ts" />
   <Card href="./odata" title="Odata" description="Source: packages/spec/src/api/odata.zod.ts" />
+  <Card href="./protocol" title="Protocol" description="Source: packages/spec/src/api/protocol.zod.ts" />
   <Card href="./realtime" title="Realtime" description="Source: packages/spec/src/api/realtime.zod.ts" />
   <Card href="./router" title="Router" description="Source: packages/spec/src/api/router.zod.ts" />
   <Card href="./view-storage" title="View Storage" description="Source: packages/spec/src/api/view-storage.zod.ts" />

content/docs/references/api/meta.json

@@ -9,6 +9,7 @@
     "errors",
     "graphql",
     "odata",
+    "protocol",
     "realtime",
     "router",
     "view-storage",