fix(etoro-trading): declare server placement for Grok Bot

[minupalaniappan]

What this fixes

eToro Trading (third_party/etoro-trading, added in #410) installs in Grok Bot but never shows a connect / sign-in card, so users cannot reach eToro's hosted MCP at https://mcp.public-api.etoro.com from Settings → Connectors.

Cause: Grok Bot dials only SERVER-placed hosted MCP rows. etoro-trading/mcp.json has no placement field, so its row stays UNDECIDED. This is the same gap #438 fixed for TinyFish, beehiiv, Trello, Buffer and Plaud.

Fix: add "placement": "server" to the etoro-trading server entry, bump the plugin to 1.0.1 so clients re-fetch the manifest, and add a CHANGELOG line. eToro's own developer plugin (etoro, the API docs listing) is untouched.

Verified

• node scripts/validate-plugins.mjs passes for all plugins.
• Field usage matches third_party/x-money/mcp.json and the third_party: declare server placement for TinyFish, beehiiv, Trello, Buffer, Plaud #438 plugins.
• eToro's dynamic client registration accepts the desktop redirect set (https://www.cursor.com/agents/mcp/oauth/callback + http://localhost:8787/callback), probed 2026-09-29.

Follow-ups

• After merge: re-index cursor-public with force re-pull and move etoro-trading from public-draft to public-listed.
• Grok Bot mobile sign-in still needs eToro to allow https://www.cursor.com/bot/mcp/oauth/callback and grokbot://mcp/oauth/callback on /api/sso/v1/register (currently 400 invalid_redirect_uri); requested from eToro separately.

---

Note

Low Risk
Manifest-only change (MCP placement + version bump); no runtime or auth logic modified.

Overview
Fixes Grok Bot so the eToro Trading connector can show a connect / sign-in card instead of staying in an undecided state.

Adds "placement": "server" to the hosted HTTP MCP entry in mcp.json (same pattern as other third-party hosted MCP plugins). Bumps the plugin to 1.0.1 and documents the change in CHANGELOG so clients pick up the updated manifest.

^{Reviewed by Cursor Bugbot for commit 0b38ff6. Bugbot is set up for automated code reviews on this repo. Configure here.}