feat: full service exposure with grammy bot + claudegram patterns

- Rewrote bot/index.js using grammy (@grammyjs/auto-retry + runner)
- Added deduplication.js (adapted from claudegram)
- Added request-queue.js (per-chat sequential processing)
- Added message-sender.js (chunking + Markdown fallback)
- Wired all JS-shim services: tools, skills, agents, config, RTK
- Added function calling support to ZAIProvider.chat()
- Added dynamic command routing (tools, skills, agents, model, stats)
- Added per-agent delegation commands (/agent_coder, /agent_architect, etc.)
- Added dedup + queue patterns from claudegram's battle-tested codebase
- Updated zcode.js to pass agents to initBot()
- Updated README feature comparison table to reflect real capabilities

package.json

@@ -11,6 +11,8 @@
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.81.0",
+    "@grammyjs/auto-retry": "^2.0.2",
+    "@grammyjs/runner": "^2.0.3",
     "axios": "^1.14.0",
     "chalk": "^5.4.0",
     "commander": "^12.0.0",
@@ -18,6 +20,7 @@
     "execa": "^9.6.1",
     "express": "^4.21.0",
     "fs-extra": "^11.2.0",
+    "grammy": "^1.42.0",
     "openai": "^4.77.0",
     "p-queue": "^8.0.1",
     "winston": "^3.13.0",