feat: v3.0.0 — OCP CLI, plan usage monitoring, runtime settings, prompt guard

Major release: complete management interface for the Claude proxy.

- /ocp CLI with 10 subcommands (usage, status, health, settings, logs, models, sessions, clear, restart)
- Gateway plugin for /ocp as native Telegram/Discord slash command
- Plan usage monitoring via Anthropic API rate-limit headers (session %, weekly %, reset times)
- Per-model request stats (count, avg/max elapsed, avg/max prompt chars)
- Runtime settings via PATCH /settings (tune timeouts, concurrency, prompt limits without restart)
- Prompt truncation guard at 150K chars to prevent conversation history blowup
- Circuit breaker removed — caused cascading failures in CLI-proxy architecture
- Timeout increases: Opus 150s, Sonnet 120s, Haiku 45s base first-byte
- New endpoints: /usage, /status, /settings, /logs
- README fully rewritten with CLI examples and changelog

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -1,10 +1,11 @@
 {
   "name": "openclaw-claude-proxy",
-  "version": "2.5.0",
-  "description": "OpenAI-compatible proxy for Claude CLI v2 — sliding-window circuit breaker, adaptive first-byte timeout, structured logging",
+  "version": "3.0.0",
+  "description": "OpenAI-compatible proxy for Claude CLI — plan usage monitoring, runtime settings, prompt truncation, OCP CLI",
   "type": "module",
   "bin": {
-    "openclaw-claude-proxy": "./server.mjs"
+    "openclaw-claude-proxy": "./server.mjs",
+    "ocp": "./ocp"
   },
   "scripts": {
     "start": "node server.mjs",