docs: update forge.rs entry for meta read access

added clarification that forge mirrors include meta read access for
agents as read-only collaborators on core/meta.

CLAUDE.md

@@ -74,9 +74,10 @@ hive-c0re/         host daemon + CLI (one binary, subcommand-dispatched)
   src/migrate.rs        startup auto-migration from pre-meta layout
                          (idempotent, marker-guarded phase 4)
   src/forge.rs          optional Forgejo wiring: per-agent users +
-                         tokens, the `agent-configs` org, and
-                         `push_config` — mirrors each applied repo
-                         into `agent-configs/<n>` on the local forge
+                         tokens, the `agent-configs` org (`push_config`),
+                         and meta read access; mirrors each applied repo
+                         into `agent-configs/<n>` (core-only); agents are
+                         read-only collaborators on `core/meta`
   src/dashboard.rs      axum HTTP: static shell + /api/state JSON + actions
                          + journald viewer + bind-with-retry (SO_REUSEADDR)
                          + deployed_sha chip per container +