docs(discovery): lead service + MCP descriptions with Private Watch

The /.well-known/x402 service blurb, the MCP server description, and the
MCP-registry manifest all led with DeFi/builder telemetry, so directory
crawlers (x402scout, CDP Bazaar semantic search, PulseMCP/Glama) surfaced
us as a generic DeFi feed and buried the flagship. Re-lead all three with
the differentiator: HMAC-signed Monero/Zcash payment webhooks (view-key
only, no node), with DeFi liquidation + builder stats following. Registry
description kept to 99 chars (<=100 limit).

Author: S. K. Rotwang MMMMMMMMM

server.json

@@ -2,7 +2,7 @@
   "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
   "name": "io.github.Rotwang9000/seneschal-data",
   "title": "Seneschal Data",
-  "description": "Live DeFi liquidation, Ethereum builder & Monero/Zcash data over MCP. Free, no key; x402 premium.",
+  "description": "Monero/Zcash payment webhooks + DeFi liquidation & Ethereum builder data over MCP. Free tier; x402.",
   "version": "0.1.0",
   "websiteUrl": "https://seneschal.space",
   "repository": {

src/mcp-server.js

@@ -117,7 +117,7 @@ export function buildMcpServer(options = {}) {
 		name: 'seneschal-data',
 		version: apiVersion,
 		title: 'Seneschal Data',
-		description: 'Free, public liquidation + builder telemetry for DeFi (Aave, Morpho, Spark, Compound). No authentication; rate-limited at the Caddy layer. Premium feed (per-call x402 micropayment in USDC on Base) exposes the uncapped at-risk catalogue plus realised market intel.'
+		description: 'Pay-per-call data tools over x402 (USDC on Base, no API key): Monero/Zcash payment-watching — create view-key webhooks, run historical note scans, derive a Zcash UFVK — plus live XMR/ZEC chain facts, DeFi liquidation telemetry (Aave, Morpho, Spark, Compound at-risk borrowers) and Ethereum builder bid-distribution stats. Free read tier; Private Watch and premium feeds settle via x402 micropayments.'
 	});
 
 	server.registerTool('seneschal_health', {

src/rest-server.js

@@ -1100,7 +1100,7 @@ export async function buildApp(options = {}) {
 			...paywallSummary,
 			service: {
 				name: 'Seneschal Data API',
-				description: 'On-chain DeFi liquidation + Ethereum builder telemetry and Monero/Zcash payment-watching, payable per call over x402. Free read tier, no API key.',
+				description: 'Monero & Zcash payment webhooks (HMAC-signed, view-key only, no node) plus on-chain DeFi liquidation and Ethereum builder telemetry — all payable per call over x402 on Base. Free read tier, no API key, no account.',
 				homepage: 'https://seneschal.space',
 				docs: 'https://docs.seneschal.space',
 				api_root: 'https://api.seneschal.space',