feat(omo-claude): re-vendor MCP servers self-contained with CLAUDE_PLUGIN_ROOT

ast_grep + lsp servers vendored under plugin/mcp via sync-mcp.mjs; .mcp.json uses
${CLAUDE_PLUGIN_ROOT} (no ../). Both boot from a node_modules-free tree (verified
JSON-RPC initialize handshakes). lsp hook bundled to inline lsp-tools-mcp. mcp/
dist is gitignored (regenerated by build).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/omo-claude/plugin/.mcp.json

@@ -0,0 +1,12 @@
+{
+	"mcpServers": {
+		"ast_grep": {
+			"command": "node",
+			"args": ["${CLAUDE_PLUGIN_ROOT}/mcp/ast-grep/cli.js", "mcp"]
+		},
+		"lsp": {
+			"command": "node",
+			"args": ["${CLAUDE_PLUGIN_ROOT}/mcp/lsp/cli.js", "mcp"]
+		}
+	}
+}