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xarmian
416aea2d14
* fix(collab): reconnect catch-up only when this tab's frames can be missing (BUG-3523)
The provider sent the whole document as one update on every reconnect,
appending a full copy to the op-log on each laptop wake or network blip.
It now sends it only when an edit was made with no socket open, or a
local update went out on a socket that then closed and no barrier ack
cleared it.
The barrier: once local sends go quiet (2s), the client sends one
`barrier {n}`; the server answers `barrier_ack {n, ok}` in readLoop
order, after every earlier frame was persisted, with ok=false when an
op-log append on that conn failed since the last barrier. An ok ack
covering every local send clears the debt; ok=false keeps it and logs
the item; a server that never answers leaves the tab owed.
Also counts materializer give-ups (pad_materialize_giveup_total{kind}).
Claude-Session: https://claude.ai/code/session_01Q9WssCjFuHjSfLABoW4tmS
* fix(collab): a SyncStep2 answer is stored but not counted as content (BUG-3523)
A step2 is y-protocols' answer to a peer's step1 and repeats content other
rows carry: the answering tab's own edits went out as updates (and are
repaired with a full catch-up if they may be missing), and everything
else it holds came through the relay. Counting it kept items pending and
made the materializer replay a full copy of the document per joining tab.
Measured first: recorded multi-tab op-logs, across a dormancy prune,
materialize to identical text with and without their step2 rows.
Applied at append only. The startup backfill keeps the older rule for
legacy rows, written by clients with no failed-append repair.
Also: a barrier_ack with ok=false now resends the document on the live
socket at once (lead ruling), instead of only owing the next connection.
Claude-Session: https://claude.ai/code/session_01Q9WssCjFuHjSfLABoW4tmS
* docs(collab): say what the barrier ack's write deadline bounds (BUG-3523)
Claude-Session: https://claude.ai/code/session_01Q9WssCjFuHjSfLABoW4tmS
* test(e2e): take the server's data dir from one module (BUG-3523)
The step2 spec resolved .pad-e2e one level too shallow: it passed where
PAD_E2E_DATA_DIR was set and could not open the database in CI.
playwright.config.ts and the spec now read e2e/lib/data-dir.ts.
Claude-Session: https://claude.ai/code/session_01Q9WssCjFuHjSfLABoW4tmS