- shareContext: adds optional memberId param; when provided, upserts on
(meshId, memberId) instead of (meshId, presenceId) — prevents stale
context rows accumulating on every reconnect. Falls back to presenceId
for legacy/anonymous connections. Also refreshes presenceId on update
so it stays current.
- schema: adds member_id column + unique index context_mesh_member_idx
on mesh.context table; new migration 0013_context-stable-member-key.sql.
- index.ts call site updated to pass conn.memberId as the stable key.
- createStream: replaces SELECT-then-INSERT TOCTOU race with atomic
INSERT ... ON CONFLICT DO NOTHING RETURNING, followed by SELECT on miss.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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