package.json is now the single source of truth for the plugin description
(as it already effectively is for version). sync-version.mjs propagates it
into manifest.json; mcpb/manifest.json keeps its Claude-Desktop-specific
description and is intentionally not synced.
Adds scripts/set-description.mjs + 'make set-description DESC=...' so neither
JSON file is hand-edited (250-char Obsidian limit enforced).
Rewrites the word-salad description to reality-based copy naming the actual
client and mechanism:
'Give Claude Desktop and other AI assistants semantic access to your notes
through a built-in Model Context Protocol (MCP) server.'
