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xarmian
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MAX_FETCH was documented as a cap but only ever reached the fetch `limit`: the upload path prepended unconditionally and `pendingUploads` was itself unbounded, so a long paste session grew the in-memory list — and the lightbox set it feeds — without limit. Every growth path now runs through `capped()`: the load-time merge, the upload event, the pending buffer that rides on top of the merge, and the failed-delete rollback (PLAN-2392 DR-11). A failed list fetch used to render as "no attachments", making a broken strip and an empty one indistinguishable. It now shows a compact "Couldn't load attachments · Retry", and Retry invalidates the shared per-attachment HEAD-metadata cache before refetching — that cache latches `null` on failure for the page lifetime, so a naive retry would replay the cached failure on every surface that probed during the same outage (DR-10). Retry also keeps what the failure preserved (optimistic uploads, deletion tombstones) rather than clearing like an item switch. A delayed loading row makes loading, empty and failed three distinguishable states without flashing a block above the editor on the common un-attached item; empty still renders no section at all (DR-18). The header shows the true count, `50+` once rows exist past the bound, and the overflow continuation is now item-scoped: "View all (N)" links to `?attachment_item=<id>#storage`, the settings route passes it through and owns clearing it, and StorageTab seeds its existing `item_id` filter from it with a visible, clearable scope chip plus its own loading/error states. The count is tracked as a delta beyond the strip, anchored on the server's `total` and corrected for rows the page reported as deleted and for uploads the page predates — so local deletes and uploads keep it honest. Two residuals are deliberate and commented at the call site: a deletion of a row PAST the bound can't be attributed (the bus is workspace-wide) and may overstate by one until the next load, and uploads shed by the pending buffer during a single in-flight request are uncounted because counting them double-counts the ordinary case. The test asserting a failed fetch shows no visible error is deliberately falsified and replaced. Claude-Session: https://claude.ai/code/session_01LmbFxQFDjcYKBLcTnor6DC