A profile installs @deepseek-ai/dsh-experimental-browser-use-runtime from npm
beside the dsh installation, and that package declared @deepseek-ai/dsh-scope
and @deepseek-ai/dsh-mcp-client as dependencies, so the install carried its own
copy of both.
dsh-scope mints its scope-tag symbol per module instance, so the copy's
createScope tags a context the host's scopeOf cannot read. Every Agent's MCP
tools then registered in the global tool layer: the first Agent succeeded and
each later Agent's tool synchronization hit a name conflict, which
failOnStartupError turned into a failed creation.
Both are now peer dependencies (plus dev), which is how every other consumer of
ctx.tools and dsh-scope declares them and how a profile install reaches the
installation's single instance through the profiles module fallback.
schemastery stays a dependency: it carries no instance-local state.
Fixes#4573
Tianyi Cui