完善分层 AGENTS.md，便于快速定位代码

go-gost/x/handler/AGENTS.md

@@ -0,0 +1,32 @@
+# GO-GOST/X HANDLERS KNOWLEDGE BASE
+
+## OVERVIEW
+Protocol handlers (server-side request handling) used by services defined in the GOST config.
+
+## STRUCTURE
+```
+go-gost/x/handler/
+├── http/     # handler.go + metadata.go (+ udp.go)
+├── socks/    # SOCKS variants
+├── tunnel/   # Tunnel forwarding
+├── relay/    # Relay forwarding
+├── redirect/ # TCP/UDP redirect handlers
+├── router/   # Routing/association entrypoints
+└── ...
+```
+
+## WHERE TO LOOK
+| Task | Location | Notes |
+|------|----------|-------|
+| Find a protocol handler | `go-gost/x/handler/` | Subdir per protocol (`http`, `socks`, `tunnel`, ...) |
+| HTTP specifics | `go-gost/x/handler/http/handler.go` | Implements HTTP proxy behavior |
+| SOCKS specifics | `go-gost/x/handler/socks/` | v4/v5 implementations |
+
+## CONVENTIONS
+- Handler implementations typically live in `handler.go` with a paired `metadata.go` (e.g. `go-gost/x/handler/http/`).
+
+## COMMANDS
+```bash
+cd go-gost/x
+go test ./...
+```