tone down advertisey copy

- index.md: 'building and shipping with Rethink Studios' -> 'building and
  shipping on our network' (it's the network, not the company)
- workflow.md + its index card: 'how we actually work day to day' ->
  'get hands on with how we dev'
- deploy.md: drop the 'see the light / ready to host whatever you've built'
  pitch for a plain 'how a project gets onto rethink-net'; trim the now-
  duplicate eligibility tip

Signed-off-by: disqualifier <dev@disqualifier.me>

docs/index.md

@@ -1,7 +1,7 @@
 # rethink development
 
-The public reference for building and shipping with Rethink Studios: our shared
-libraries, our coding standards, and how to deploy a project on our network.
+The reference for building and shipping on our network: the shared libraries, the
+coding standards, and how to get a project deployed.
 
 This is a public site — it documents generic patterns and conventions. Real
 infrastructure specifics (hostnames, internal IPs, exact topology, secrets) stay
@@ -29,7 +29,7 @@ out of it; examples use placeholders like `<dev>`, `<project>`, and `/srv/...`.
 
     ---
 
-    How we actually work day to day — our Gitea, git habits, and the
+    Get hands on with how we dev — our Gitea, git habits, and the
     plan-in-chat / build-in-Claude-Code flow, plus shell setup.
 
 -   :material-language-python: __[Virtual environments](environments.md)__