revert: remove batch commands CHANGELOG entry and VERSION bump

The batch endpoint work belongs on the browser-batch-multitab branch
(port-louis), not this branch. Reverting VERSION to 0.15.14.0.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -1,18 +1,5 @@
 # Changelog
 
-## [0.15.15.0] - 2026-04-06 — Batch Commands: 20x Faster Remote Browsing
-
-Remote agents controlling your browser through a tunnel used to pay 2-5 seconds of latency per command. A 20-tab crawl meant 160 round-trips and ~8 minutes of waiting. The new `POST /batch` endpoint collapses N commands into a single HTTP round-trip — that same crawl now takes ~5 seconds.
-
-### Added
-
-- **`POST /batch` endpoint.** Send up to 50 commands in a single HTTP request, get all results back in one response. Each command can target a different tab via `tabId`. Sequential execution through the full security pipeline (scope, domain, tab ownership, content wrapping). Rate limiting counts the batch as 1 request.
-- **8 source-level security tests** for the batch endpoint covering auth gate placement, scoped token support, command limit, nested batch rejection, rate limiting, activity events, field validation, and tabId passthrough.
-
-### Changed
-
-- Hermes consolidated into the generic HTTP option in `/pair-agent` (was a separate menu choice with identical behavior).
-
 ## [0.15.14.0] - 2026-04-05
 
 ### Fixed

VERSION

@@ -1 +1 @@
-0.15.15.0
+0.15.14.0