Starting an encounter meant searching for each party member by name, one at a time. The management view now carries an "Add party to encounter" button that puts all of them on the board in one click and closes, so the initiative list is what you see next. Members already in the encounter are skipped. Matching is on playerCharacterId, not on name — otherwise a second click would hand you "Thorin 2" via the auto-numbering, and renaming a combatant to match a mini (the reason the rename feature exists) would break the check. Rows for those members show a muted swords icon, and the button disables once nothing is left to add, so the greyed-out state has a visible cause. The whole batch pushes a single undo entry rather than one per combatant: undoing a four-person party should not take four keystrokes. That is why the reducer loops internally instead of the UI dispatching N times, and why addOneFromPlayerCharacter is now split out of the single-add handler for both paths to share. Spec 005 gains story PC-8, FR-020..FR-023, SC-010/SC-011 and the edge cases around partial parties, renamed combatants and orphaned ones. The existing "multiple copies of the same PC are allowed" edge case is marked as still true for individual adds — the party button is the deliberate exception. Key Entities now documents the combatant/PC link the dedup relies on, which had never been written down. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>