chore(release): v2.0.0

Major bump — six commits since v1.0.0 change the JSON tool-output
contract in incompatible ways:

- 78cc7aa  drop `rethunkGitMcp` envelope (format v1 → v2)
- fe5cca4  drop `shortStatus` field from inventory entries
- 5b6134f  omit null/empty fields from inventory JSON (presence
           check, not null compare)
- bcaf89e  omit `upstream` object from inventory output in auto mode
- ca8b9f5  drop verbose `message` field from self-describing errors

Any consumer pinned on `^1.0.0` must migrate; see docs/mcp-tools.md
("v2 field omission") for the full spec.

Non-breaking work since v1.0.0 (refactors, markdown-frame collapse,
tool-description trimming, helper tightening) rides along.

Author: AlbinoGeek

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@rethunk/mcp-multi-root-git",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "MCP stdio server: multi-root git status, inventory, and HEAD parity checks. Generic tools usable by any workspace.",
   "type": "module",
   "private": false,