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* feat(items): add unparented filtering contract * fix(items): preserve unparented projection state * fix(views): preserve reserved filter on reset * fix(items): resync projection scope changes * fix(items): address PR 926 review findings - localIndex: fetch snapshot before clearing store/cache in resyncProjectionScope (no data-loss window on fetch failure) - items: degrade to committed item when post-parent-link readback fails instead of 500 - items: treat unparented=<non-true> as a field filter so a schema field named unparented still filters - persistence: delete dead persistCursor - mark validateUnparentedListRequest canonical; cross-reference the 3 early-feedback copies * fix(items): resync race + purge safety per Codex review (round 1) - resyncProjectionScope: merge-reconcile instead of blunt clear so a higher-seq upsert/delta racing the snapshot fetch is preserved (not erased) and the cursor never regresses below it - recheck generation after persistWipe so a sign-out/403 purge during the wipe can't resurrect purged rows via persistDelta - snapshot rows authoritatively replace local copies (drop is_unparented on downgrade); mergeRow's projection-preservation is bypassed for resync * fix(items): sanitize projection bit on preserved racing rows per Codex review (round 2) When a projection resync lands a restricted snapshot, strip is_unparented from any racing higher-seq row kept by the seq guards — the old scope no longer grants it. Keep the row itself (dropping it would reintroduce the racing-mutation data loss; server 403 enforces real visibility). * fix(items): transactional cache replace in resync per Codex review (round 3) Replace wipe()+persistDelta() in resyncProjectionScope with a single persistReplace() transaction (clear + write in one tx). Avoids the deleteDatabase() onblocked cross-tab hang where a pending delete stalls the following reopen+write indefinitely, wedging the resync promise. wipe() stays for the sign-out / schema-mismatch full-teardown paths. * fix(items): drop-and-replay resync reconciliation per Codex review (round 4) Rework resyncProjectionScope: drop every row absent from the authoritative snapshot (not just older-than-cursor ones) and pin the cursor to the snapshot cursor. A post-snapshot mutation the client can still see is re-fetched by the next /items-changes?since=cursor under the NEW scope, so visible rows return and old-scope-hidden rows stay gone — no old-scope row survives the resync, and nothing is permanently lost. Present-in-snapshot racing edits are still kept (is_unparented stripped under a restricted scope). * fix(items): continue delta poll after resync so replay actually fires (round 5) The drop-and-replay resync (round 4) pins the cursor to the snapshot cursor so post-snapshot mutations re-fetch under the new scope — but both poll loops broke out / returned immediately after the resync, so the replay never ran until an unrelated sync/reload. Both callers now continue the loop from the pinned cursor; resync already aligned the scope so the branch can't re-fire, and the existing 50-iteration cap bounds it. * fix(items): keep pendingResync set until replay catches up (round 6) resyncProjectionScope cleared pendingResync after installing the snapshot but before the pinned-cursor replay drained. If that replay later failed or hit the 50-page cap, pendingResync stayed false and the next bootstrap() no-opped with racing mutations still missing. Let the reconcile loop's caughtUp logic own the flag instead. * fix(items): set pendingResync when any resync begins (round 7) Round 6 removed the premature clear but only the bootstrap path pre-sets pendingResync; a page deltaSync resync ran with it false, so a failed/capped replay there wouldn't trigger a bootstrap resume. Set pendingResync=true at the start of resyncProjectionScope so any caller marks catch-up pending; the reconcile loop clears it on caughtUp. * fix(items): fence stale optimistic writes + epoch-guard resync catch-up (round 8) Adds a resync-epoch + fenced-id mechanism to close the last two race classes: - fencedIds: a resync records the ids it dropped (hidden under the new scope). upsert() refuses a fenced id, so a stale old-scope create/update response resolving after the resync can't resurrect a now-hidden row that no new-scope delta would evict (P1). An authoritative applyDelta re-add un-fences; the next resync recomputes the set (re-upgrade clears it). Self-contained in the store — no epoch threading through the optimistic callers. - scopeEpoch: bumped when a resync installs a new snapshot. Both reconcile loops capture it before each /items-changes and skip treating a response that raced a concurrent resync as caught-up, so a stale in-flight delta can't clear pendingResync without validating the pinned cursor (P2). Regression test covers fence → reject stale upsert → authoritative re-add un-fences → later edits accepted. * fix(items): bump scope epoch before resync fetch (round 9 P2) scopeEpoch advanced only after listIndex() returned, so a reconcile response racing the fetch saw the old epoch and could clear the pendingResync the resync set at start. Bump the epoch before the network await instead.