The harness checkout path and Web GUI URL now reach the model as runtime
context from the new dsh-harness-dev-context plugin, so a process started
on another port, checkout, or installation no longer rewrites a Session's
logged system prompt. A Session whose prompt already embeds the earlier
value-bearing paragraphs keeps them verbatim through a host-only session
projection.
dsh-host-webserver gains WebServer.origin and bindUrlHost(); web-app keeps
only DSH_WEB_URL, the startup URL, and the browser handoff, and its root
declares the webStartup service type. app-boot drops
addHarnessSourceSection and HARNESS_SOURCE_SECTION.