docs(ax): add codex conventions

Co-Authored-By: Virgil <virgil@lethean.io>

CODEX.md

@@ -0,0 +1,22 @@
+# CODEX.md
+
+This repository uses the same conventions as `CLAUDE.md`.
+
+## Source Of Truth
+
+- RFC: `docs/RFC.md`
+- AX principles: `.core/reference/RFC-025-AGENT-EXPERIENCE.md`
+- Package conventions: `CLAUDE.md`
+
+## Quick Commands
+
+```bash
+go test ./...
+go test -race ./...
+go vet ./...
+```
+
+## Commit Style
+
+- Use conventional commits: `type(scope): description`
+- Include `Co-Authored-By: Virgil <virgil@lethean.io>`

api/router.go

@@ -1,12 +1,6 @@
-// Package api implements the HTTP monitoring endpoints for the proxy.
+// Package api wires the monitoring endpoints onto an HTTP router.
 //
-// Registered routes:
-//
-//	GET /1/summary — aggregated proxy stats
-//	GET /1/workers — per-worker hashrate table
-//	GET /1/miners  — per-connection state table
-//
-//	proxyapi.RegisterRoutes(apiRouter, p)
+//	api.RegisterRoutes(http.NewServeMux(), p)
 package api
 
 import (
@@ -78,7 +72,7 @@ type ResultsResponse struct {
 	Best        [10]uint64 `json:"best"`
 }
 
-// RegisterRoutes mounts `/1/summary`, `/1/workers`, and `/1/miners` on a router.
+// RegisterRoutes mounts the monitoring endpoints on any router with HandleFunc.
 //
 //	api.RegisterRoutes(http.NewServeMux(), p)
 func RegisterRoutes(router Router, proxyValue *proxy.Proxy) {