docs(reference): import Dune: Awakening server-manager references

Phase 2 references for the host-agent Dune adapter, moved out of volatile /tmp
into docs/reference-repos/ (per Commander). Three upstream projects, .git +
node_modules + compiled binaries stripped (16MB source). Nested AI-instruction
files (.claude/, CLAUDE.md) removed so they don't pollute Corrosion sessions.

- icehunter/    dune-admin (Go+React) — 4 control planes; SETUP_DOCKER.md is the
                closest analog to our agent's Dune docker control plane (compose
                lifecycle, docker logs, RabbitMQ-via-exec, dune Postgres schema)
- adainrivers/  Rust/Tauri desktop — SSH+k8s BattleGroup control, maintenance
                daemon, in-game admin console (Rust idiom reference)
- the4rchangel/ Node web UI replacing battlegroup.bat — matches the Commander's
                Hyper-V self-host path + game-config schema

See docs/reference-repos/README.md for the full index + how we use each.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/reference-repos/icehunter/db-routines/functions/battlegroup/get_battlegroup_close_date__0args.sql

@@ -0,0 +1,11 @@
+-- get_battlegroup_close_date() -> timestamp without time zone
+-- oid: 58286  kind: FUNCTION  category: battlegroup
+
+CREATE OR REPLACE FUNCTION dune.get_battlegroup_close_date()
+ RETURNS timestamp without time zone
+ LANGUAGE plpgsql
+AS $function$
+BEGIN
+	RETURN (SELECT farm_variables.battlegroup_close_date from farm_variables);
+END
+$function$

docs/reference-repos/icehunter/db-routines/functions/battlegroup/set_battlegroup_close_date__1args.sql

@@ -0,0 +1,13 @@
+-- set_battlegroup_close_date(in_close_date timestamp without time zone) -> timestamp without time zone
+-- oid: 58589  kind: FUNCTION  category: battlegroup
+
+CREATE OR REPLACE FUNCTION dune.set_battlegroup_close_date(in_close_date timestamp without time zone)
+ RETURNS timestamp without time zone
+ LANGUAGE plpgsql
+AS $function$
+BEGIN
+	INSERT INTO farm_variables (one_row, battlegroup_close_date) VALUES (true,in_close_date)
+	ON CONFLICT (one_row) DO UPDATE SET battlegroup_close_date = in_close_date;
+	RETURN (select * from get_battlegroup_close_date());
+END
+$function$