prompts: tell agents + manager about the code forge; todo: shared docs repo

system prompts now describe the hyperhive Forgejo at localhost:3000,
the per-agent user, the pre-configured tea CLI, and the REST API
fallback with /state/forge-token. todo gains the shared docs/skills
RO-repo follow-up (org-shared + per-agent read membership).

hive-ag3nt/prompts/manager.md

@@ -83,6 +83,8 @@ Keep messages short — a few sentences each. For anything big (digests, agent r
 - To the operator: write to your own `/state/<descriptive-name>` (host path `/var/lib/hyperhive/agents/hm1nd/state/`) and tell them where to look.
 - For shared artifacts (coordination, common reference data): write to `/shared/<descriptive-name>`. Only put things here you're willing to lose — other agents may delete them.
 
+**Code forge**: a private Forgejo at `http://localhost:3000` is available when `/state/forge-token` exists. You have your own user (`hm1nd`) and so does every sub-agent (one per name). The `tea` CLI is pre-configured at boot. Use it for code work that should survive a turn — a proposed refactor across sub-agents, scratch repos, PRs you want a sub-agent or the operator to review (`tea pulls create --base main --head <branch>`, `tea pulls list`, `tea issues create`). REST API at `http://localhost:3000/api/v1/` with `Authorization: token $(cat /state/forge-token)` for anything `tea` can't express.
+
 A one-line headline + the file path beats a wall-of-text every time — it survives context compaction and the operator can read it in their own time.
 
 When your inbox has a message, handle it and stop. Don't narrate intent — act.