Update Evolu Relay docs and improve local-first guide

Renamed 'evolu-relay' documentation to 'relay' across links, redirects, and file names for consistency. Enhanced the local-first documentation with clearer schema definition, usage examples, and added sections for soft deletes and data reset.

Author: steida

README.md

@@ -24,7 +24,7 @@ The Evolu Relay source along with the Docker files can be in the [/apps/relay](/
 
 Alternatively, a pre-built image `evoluhq/relay:latest` is hosted on [Docker Hub](https://hub.docker.com/r/evoluhq/relay).
 
-For more information, reference the [Evolu Relay](https://www.evolu.dev/docs/evolu-relay) documentation.
+For more information, reference the [Evolu Relay](https://www.evolu.dev/docs/relay) documentation.
 
 ## Developing
 

apps/web/next.config.mjs

@@ -33,7 +33,12 @@ const nextConfig = {
       },
       {
         source: "/docs/evolu-server",
-        destination: "/docs/evolu-relay",
+        destination: "/docs/relay",
+        permanent: true,
+      },
+      {
+        source: "/docs/evolu-relay",
+        destination: "/docs/relay",
         permanent: true,
       },
       {