rename <dev> path segment to <workspace>, unify /srv paths

Host paths now follow one shape: /srv/<kind>/<workspace>/<project>/ across
configs, logs, and mounts (mounts added as its own row; configs gains the
workspace segment it was missing).

- deploy.md: compose volumes, paths table, secrets path + rotation snippet
  all use <workspace>; add a yellow (warning) admonition ABOVE the table
  explaining it — individual dev = lowercase username (ricky, xattam),
  shared/official project = workspace (bots, web, apis) — so it stands out
  from the all-blue palette and reads before the table.
- index.md: placeholder example uses <workspace>.

Verified in-browser; mkdocs build --strict clean.

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

docs/index.md

@@ -5,7 +5,8 @@ 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
-out of it; examples use placeholders like `<dev>`, `<project>`, and `/srv/...`.
+out of it; examples use placeholders like `<workspace>`, `<project>`, and
+`/srv/...`.
 
 !!! tip "Point your coding agent here"
     Want your agent aware of our libraries, standards, and deploy rules before it