v0.9.1

Release v0.9.1 — public release with ACKS II App License

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

v0.9.0

Renumber to family 0.x convention (1.3.2 -> 0.9.0)

Every other acks-* module releases on a 0.x line (henchmen 0.9.x,
equipment 0.13.x, formation 0.18.x, monsters 0.5.x); influence's 1.x was
an accident of the first release starting at 1.0.0, not an API-stability
statement — apiVersion has been churning (2->3->4). No functional changes
since v1.3.2. Old v1.x tags/releases are being purged; local installs
recorded as 1.x need a one-time uninstall/reinstall (world data persists).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>