add satirrfrr as third admin; create AGENTS.md

AGENTS.md

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+# Tarna Minecraft Bedrock Server / Dragonfly
+
+## Run
+- `go run main.go` — start server (uses `config.toml`; auto-created if missing)
+- `go build -o mc_server main.go && ./mc_server` — build + run
+- `make lint` — run `golangci-lint` with `govet`, `staticcheck`, `ineffassign`, `gocritic`
+- `go test ./...` — all tests (only 2 test files exist; deterministic world tests use `world.Config{Synchronous: true}`)
+- CI runs `make lint` then `go test ./...` on every PR/push
+
+## Architecture
+- `main.go` — entry point; adds custom mob spawner (every 20s), item cleaner (every 15min), cooperative random spawn, admin-only commands (2 hardcoded admins)
+- `server/` — the Dragonfly library: `server.go` (core), `conf.go` (config), `session/` (network protocol), `cmd/` (command framework), `block/`, `entity/`, `world/` (world + generators + LevelDB storage)
+- `cmd/blockhash/` — standalone utility for block hash generation
+- `config.toml` — runtime config (TOML); network address, world folder, chunk radius, resource packs, etc.
+
+## Code conventions
+- Module: `github.com/df-mc/dragonfly` (Go 1.26)
+- British English in docs, symbols, variables
+- `gofmt` formatting; 3+ sequential vars grouped into `var()` block
+- Minimize exported symbols; conservative use of generics
+- `eol=lf` for all `.go` files (`.gitattributes`)
+
+## Generated files (DO NOT EDIT)
+- `server/session/enchantment_texts.go` — autogenerated by CI from GitHub contributor list
+
+## Deploy (push to master only)
+- Builds binary → SCPs to VPS → stops old server via `screen` → starts new binary in `screen -S dragonfly`
+- PRs deploy test server to `df-mc.dev/pullrequest/<PR#>` for review
+
+## Data / runtime
+- World data stored in `world/`, player data in `players/`, resource packs in `resources/` (all gitignored)
+- `bans.json` for multi-factor ban system by username/XUID/UUID/IP