fix: add missing src/config.js to repository

The file was imported by src/index.js but never committed,
causing ERR_MODULE_NOT_FOUND on fresh clones.

Fixes #9

Author: bvisible

src/config.js

@@ -0,0 +1,70 @@
+// Configuration constants for MCP SSH Manager
+
+// Output limits to prevent Claude Code crashes
+export const OUTPUT_LIMITS = {
+  // Maximum length of stdout/stderr in responses (characters)
+  MAX_OUTPUT_LENGTH: process.env.MCP_SSH_MAX_OUTPUT_LENGTH
+    ? parseInt(process.env.MCP_SSH_MAX_OUTPUT_LENGTH)
+    : 10000,
+
+  // Maximum length for log file tailing
+  MAX_TAIL_LINES: process.env.MCP_SSH_MAX_TAIL_LINES
+    ? parseInt(process.env.MCP_SSH_MAX_TAIL_LINES)
+    : 100,
+
+  // Maximum length for rsync verbose output
+  MAX_RSYNC_OUTPUT: process.env.MCP_SSH_MAX_RSYNC_OUTPUT
+    ? parseInt(process.env.MCP_SSH_MAX_RSYNC_OUTPUT)
+    : 5000,
+};
+
+// Timeout configuration
+export const TIMEOUTS = {
+  // Default command execution timeout (milliseconds)
+  DEFAULT_COMMAND_TIMEOUT: process.env.MCP_SSH_DEFAULT_TIMEOUT
+    ? parseInt(process.env.MCP_SSH_DEFAULT_TIMEOUT)
+    : 120000, // 2 minutes
+
+  // Maximum allowed command timeout (milliseconds)
+  MAX_COMMAND_TIMEOUT: process.env.MCP_SSH_MAX_TIMEOUT
+    ? parseInt(process.env.MCP_SSH_MAX_TIMEOUT)
+    : 300000, // 5 minutes
+
+  // Connection timeout (milliseconds)
+  CONNECTION_TIMEOUT: process.env.MCP_SSH_CONNECTION_TIMEOUT
+    ? parseInt(process.env.MCP_SSH_CONNECTION_TIMEOUT)
+    : 1800000, // 30 minutes
+
+  // Keepalive interval (milliseconds)
+  KEEPALIVE_INTERVAL: process.env.MCP_SSH_KEEPALIVE_INTERVAL
+    ? parseInt(process.env.MCP_SSH_KEEPALIVE_INTERVAL)
+    : 60000, // 1 minute
+};
+
+// Response formatting
+export const RESPONSE_FORMAT = {
+  // Whether to use compact JSON (no formatting)
+  COMPACT_JSON: process.env.MCP_SSH_COMPACT_JSON === 'true',
+
+  // Whether to include debug information in responses
+  INCLUDE_DEBUG_INFO: process.env.MCP_SSH_DEBUG === 'true',
+};
+
+// Helper function to truncate output
+export function truncateOutput(text, maxLength = OUTPUT_LIMITS.MAX_OUTPUT_LENGTH) {
+  if (!text) return '';
+
+  if (text.length <= maxLength) return text;
+
+  const truncated = text.length - maxLength;
+  return text.substring(0, maxLength) + `\n\n... [${truncated} characters truncated]`;
+}
+
+// Helper function to format JSON response
+export function formatJSONResponse(data) {
+  return JSON.stringify(
+    data,
+    null,
+    RESPONSE_FORMAT.COMPACT_JSON ? 0 : 2
+  );
+}