docs(installation): list every client that first shipped in 6.5.0 (#3465)

docs(installation): list every client missing from npm 6.4.0

The installation guide named only dsh, or dsh, kimi and workbuddy, as
needing a newer release. The rea-agents-6.4.0 tag also lacks droid,
qoder, trae and zcode, so setup against @latest rejects all seven as an
unsupported agent integration.

List all seven client IDs in both the registry-check note and the
supported-agents table note.

docs/installation.md

@@ -398,8 +398,9 @@ running server or its registration.
 The npm release checked on **2026-10-11** was **6.4.0**, published from
 [`a56f7bb6`](https://github.com/morluto/rea/commit/a56f7bb668ab23fec8d33f7af353ac7ed2fe1895).
 The actual registry package accepted dry-run setup plans for the 17 client IDs
-in that release, including Qwen Code, Pi and Hermes. DeepSeek Harness (`dsh`)
-is included from 6.5.0 and was absent from the checked npm 6.4.0 package.
+in that release, including Qwen Code, Pi and Hermes. Seven client IDs are
+included from 6.5.0 and were absent from the checked npm 6.4.0 package: `droid`,
+`dsh`, `kimi`, `qoder`, `trae`, `workbuddy` and `zcode`.
 The 6.4.0 registry check does not establish 6.5.0 publication or live DeepSeek
 API integration.
 OpenCode's plan selected
@@ -482,8 +483,8 @@ hosted connector; see [its configuration](client-configuration.md#other-client-s
 | ZCode              | `zcode`          |
 | DeepSeek Harness   | `dsh`            |
 
-`dsh`, `kimi`, and `workbuddy` require a release containing them. The registry
-check above does not cover them.
+`droid`, `dsh`, `kimi`, `qoder`, `trae`, `workbuddy`, and `zcode` require
+`rea-agents@6.5.0` or later. The 6.4.0 registry check above does not cover them.
 
 See [client configuration and troubleshooting](client-configuration.md) for
 configuration paths, profiles, trust policies, and schema-limit workarounds.