Grid detail (G6): replace the single row.notes blob with a NoteTimeline fed by
a new investor-level read, GET /api/communications?source_row_id=<grid row id>
(filter maps the grid row -> fundraising_investors.source_row_id ->
fundraising_contacts.contact_id -> communications, soft-delete-respecting;
cancelled-flag fetch + commsReload after a log). Note-logging now uses the
shared LogCommunicationSheet, retiring the bespoke noteForm select sheet and the
dead .fs-note-log style.
New MobileQuickLog: a shell mobile-top-bar pencil reachable from every tab —
two-step sheet (pick investor via search + recent-first pool -> inline log form)
writing through the one-row /api/fundraising/log-communication path.
source_row_id and contact_id are kept mutually exclusive in
handle_list_communications so a future caller passing both can't get the empty
intersection. Guarded by test_grid_comm_timeline.py (cross-contact aggregation,
investor isolation, soft-delete); 39/39 backend green.
Keysat
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