feat: Complete zCode CLI X with Telegram bot integration

- Add full Telegram bot functionality with Z.AI API integration
- Implement 4 tools: Bash, FileEdit, WebSearch, Git
- Add 3 agents: Code Reviewer, Architect, DevOps Engineer
- Add 6 skills for common coding tasks
- Add systemd service file for 24/7 operation
- Add nginx configuration for HTTPS webhook
- Add comprehensive documentation
- Implement WebSocket server for real-time updates
- Add logging system with Winston
- Add environment validation

🤖 zCode CLI X - Agentic coder with Z.AI + Telegram integration

~/.npm-cache/@smithy/signature-v4@3.1.2@@@1/dist-es/getCanonicalHeaders.js

@@ -0,0 +1,20 @@
+import { ALWAYS_UNSIGNABLE_HEADERS, PROXY_HEADER_PATTERN, SEC_HEADER_PATTERN } from "./constants";
+export const getCanonicalHeaders = ({ headers }, unsignableHeaders, signableHeaders) => {
+    const canonical = {};
+    for (const headerName of Object.keys(headers).sort()) {
+        if (headers[headerName] == undefined) {
+            continue;
+        }
+        const canonicalHeaderName = headerName.toLowerCase();
+        if (canonicalHeaderName in ALWAYS_UNSIGNABLE_HEADERS ||
+            unsignableHeaders?.has(canonicalHeaderName) ||
+            PROXY_HEADER_PATTERN.test(canonicalHeaderName) ||
+            SEC_HEADER_PATTERN.test(canonicalHeaderName)) {
+            if (!signableHeaders || (signableHeaders && !signableHeaders.has(canonicalHeaderName))) {
+                continue;
+            }
+        }
+        canonical[canonicalHeaderName] = headers[headerName].trim().replace(/\s+/g, " ");
+    }
+    return canonical;
+};