* fix(#2570): parse leading date from last_activity so stale_activity fires with a description suffix templates/state.md prescribes `Last activity: [YYYY-MM-DD] — [What happened]`, and gsd-core's own STATE.md mirrors that suffix into frontmatter. Date.parse on the whole string returned NaN, and because staleActivity treats null as "not stale" (fails open), the only idle/staleness detector never fired on any project whose last_activity kept its description. parseActivityTimestamp now reads the leading ISO date/time token when a whole-string parse fails, validating the calendar date (ADR-227: reject an impossible date rather than let Date.parse roll it forward) and preferring the whole-string parse when it succeeds so a trailing zone name is not dropped. Composes with #3099 (LAST_ACTIVITY_UNPARSEABLE diagnostic), which merged to next after this branch: both key off parseActivityTimestamp === null, so a value whose leading date now parses takes the stale path and does NOT emit the diagnostic. A regression test in tests/smart-entry.unit.test.cjs asserts exactly that (stale true, emission count 0), guarding against two staleness signals on one field. Rebased onto next (flattened): resolved the add/add test conflict by keeping both the #2570 and #3099 describe blocks. Tests: unit + property, 80 pass. * fix(#2570): fail open when a named zone can't be reconstructed from the token (#2571 B1) The 2026-08-08 flatten dropped the zone handling earlier rounds built, so the fallback path -- reached only when a description suffix makes the whole-string parse fail, the #2570 case -- reconstructed `${date}${time}` WITHOUT any named zone. ISO_LEADING_RE's offset group captures only Z / +-HH:MM, so " GMT"/" EST" land in the un-captured suffix; Date.parse then read the reconstruction as LOCAL time, shifting the instant by the host's UTC offset -- a wrong, host-dependent value the diff's own comment warned against but guarded only on the other branch. Fix (the simpler of the two offered in review): when the remainder after the matched token begins with a letter (a named zone we cannot preserve), return null -- fail open to not-stale, matching the base's honest behaviour and ADR-227's "never propagate a wrong instant". The #2570 template suffix (" -- description") starts with a separator, so it still reconstructs and reads stale as intended. Tests (both fail-first, verified RED on the pre-fix head): - smart-entry.unit: a named-zone + description suffix (54 days old) enters the fallback and must read not-stale, not a still-old local instant. Host- independent by construction. - smart-entry.property (f): named-zone + suffix over 1-week..1-year ages and 8 zones stays total and fails open. Discloses the removal M2 flagged: TRAILING_ZONE_RE / UTC_ZONE_NAMES / timeCarriesOffset were dropped by the flatten; this restores the SAFETY (no wrong instant) via the simpler null contract rather than the allowlist. * fix(#2570): narrow the stale_activity fallback guard to a zone-designator shape The round-9 fail-open guard `/^\s*[A-Za-z]/` treated any letter-led remainder as an unpreservable named zone, so a leading real date followed by a bare space/tab/colon and an ordinary description (a hand-edited STATE.md that omits the template em dash) returned null and re-opened #2570 for exactly those shapes. Narrow the guard to ZONE_DESIGNATOR_RE -- a standalone short all-caps run -- and consult it ONLY when the leading token captured a time-of-day: a zone qualifies a clock time, so a bare date carries no zone hazard and always reconstructs to its UTC midnight. A plain description (including one that opens with a tech acronym like "CI green") reconstructs; a real named zone on a timed value (GMT/EST/...) still fails open (ADR-227: never propagate a wrong, host-dependent instant). Widen the property generator to the non-em-dash separators (space/tab/colon), the arm that structurally could not reach the fallback before, and add unit cases for whitespace/tab/colon-separated and bare-date+acronym descriptions. All fail-first on the prior guard; green across UTC/LA/Tokyo/Kiritimati. --------- Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
Changeset Fragments
This directory holds per-PR CHANGELOG fragments. Every PR with user-facing changes drops one (or more) <random-name>.md files here describing its CHANGELOG entry. Fragments are consolidated into the top-level CHANGELOG.md at release time.
Why
Two PRs that both edit the ### Fixed block of CHANGELOG.md always conflict on merge — git can't pick a serialization order without human input. Two PRs that each add a fresh .changeset/<unique-name>.md never conflict because they don't share lines.
See #2975 for the full rationale.
Adding a fragment
node scripts/changeset/new.cjs \
--type Fixed \
--pr 1234 \
--body "fix the thing — explain the user-visible change in one sentence"
This writes .changeset/<adjective>-<noun>-<noun>.md with frontmatter and a body. Three random words → concurrent PRs don't collide.
Format
---
type: Fixed
pr: 1234
---
**`/gsd-foo` no longer drops trailing slashes** — explain the user-visible change.
Allowed type: values follow Keep a Changelog: Added, Changed, Deprecated, Removed, Fixed, Security.
Opting out
PRs that legitimately have no user-facing impact can add the no-changelog label. CI honors it. When unsure, add the fragment.
At release time
Promotion is automatic. The release workflow's finalize job runs:
node scripts/changeset/cli.cjs render --version vX.Y.Z --date YYYY-MM-DD --allow-empty
This reads every fragment, groups bullets by type:, replaces ## [Unreleased] with a new ## [vX.Y.Z] - YYYY-MM-DD block, opens a fresh ## [Unreleased] above, and deletes consumed fragments. The --allow-empty flag ensures a no-change release still gets a dated heading (with a _No notable changes._ placeholder). A subsequent verify step confirms the promotion landed correctly. Maintainers do not run this by hand.
Archived fragments
.changeset/archived/ holds fragments for already-shipped releases (≤ 1.3.1), retained for provenance. Their content was hand-curated into the dated ## [1.x.y] sections of CHANGELOG.md during the #690 backfill — they were never consumed by render. All changeset tooling enumerates .changeset/ non-recursively, so archived fragments are never picked up or rendered. Do not move them back to the top level.