docs(timer): record verified 1.0.3 signatures and release drafts

docs(timer): record corrected 1.0.3 release candidate

fix(timer): preserve 1.0.1-1.0.3 changes and harden informer activation

Fix BSL Daily Content 1.3.1 package checksum

Release BSL Daily Content 1.3.1

Release BSL Daily Content 1.3.0

Release BSL-Timer 1.0.0 and BSL-Core 0.5.0

Document caching and midnight rollover

chore(timer): prepare 0.13.1 release

fix(timer): keep large event editor actions visible

fix(timer): refine font sizing and window layout

chore(timer): prepare 0.13.0 release

fix(timer): refine auxiliary window focus and layout

feat(desktop): add shared appearance and timer UI refinements

chore(timer): prepare 0.12.0 release

feat(timer): add date countdowns and compact event ribbon