Server (src/http-server.ts, src/index.ts, src/selection.ts,
src/new-diagram.ts):
- overlapping get_selection calls take turns (readSelection, one slot per
session as the export slot) instead of replacing each other's request,
which left one of them with a false "tab not in front" timeout
- an answer is taken only while a request is pending (both ids undefined
compared equal)
- the tool sees the page start_session actually opens: with dist/shell
missing the classic page is in use, which never answers, so the tool
says so instead of timing out
- the result lists at most 100 cells and counts the rest: a whole large
diagram selected would fill the model's context
- every <diagram> the model sends without an id gets one, so the page id
the shell reports exists in the server's document
Shell (shell/mcp-sync-core.ts, shell/use-mcp-sync.ts,
contexts/diagram-context.tsx, lib/drawio/editor-bridge.ts):
- an answer whose POST failed is sent again at the next poll
- no answer while a full load has yet to reach the editor: it still shows
the previous document, whose cells and pages the answer would name
- a hidden tab (the same session open twice) answers a poll later, so the
tab in front answers first; alone, it still answers within the timeout
- a cell's container is reported by the model's isLayer, not by comparing
with the default parent, which is the group the user entered
dayuan.jiang
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