The sixteen specs folded in last commit were folded because someone noticed
they had gone stale, not because anything said they should be. Without the rule
written down the directory drifts straight back to a mix of promises and
descriptions, and neither can be trusted: you cannot tell from a file whether it
describes the build or proposes a change to it.
So: docs/specs/ holds only unshipped work, there is no "Implemented" resting
state, and the fold-in and the deletion happen in the same commit.
The template now asks for the destination architecture doc **up front**, which
is a design check rather than bookkeeping — a feature that fits no existing doc
usually has an unclear layer assignment, and it is cheaper to find that out at
spec time. It also tells the author which half of what they are writing is
durable (invariants, rejected alternatives, the defect a decision prevents) and
which half dies with the file (phases, migration steps, acceptance criteria).
The review checklist gains a Lifecycle section, including the case that gets
lost otherwise: out-of-scope work worth doing has to be written where it will
still be found after the spec is gone.
The spec review checklist still asked for >= 50%, the figure the gate sat
at before it was found to be unreachable; traceability-ci.md carried 82%
throughout. Both now read 88%, matching the ratchet, and the checklist
points at `bun run traces:coverage` rather than inviting anyone to trust a
number written in a document.
Also refreshes the two stale coverage snapshots in traceability-ci.md
(~86% from July 2026, and targets of 70% and 90% that the current 90%
already passes) and records the 50 -> 82 -> 88 ratchet history.
Add specs for the account menu, downloads-as-offline-library, offline
downloaded-only filter, and scoped search (+ boundary revision). Add the
new UR/DR entries to requirements.md, update ux-flows, and regenerate the
traceability matrix.
TRACES: UR-049, UR-050, UR-052, UR-053, UR-054, UR-055, UR-056