Add per-NPC event history and injection

[RANGROO]

Summary

• add a final History tab to the DIALECTIC NPC editor for per-NPC narrative events
• support exact-NPC history lookup, saved Event Log visibility filters, optional additional recipients, off-scene inputtext injection, and guarded deletion
• keep profile rollback history distinct as Profile Versions
• use Fallout timestamps and DIALECTIC's Adventure Log event allow-list

Port of the applicable behavior from abeiro/HerikaServer#689.

Validation

• php -l lib/eventlog_helper.php
• php -l ui/api/dialectic_npc_manager.php
• php -l ui/core/npc_master.php
• php -l unittests/tests/HistoricContextTest.php
• node --check ui/js/npc_event_history.js
• php vendor/bin/phpunit --filter HistoricContextTest tests/HistoricContextTest.php (9 tests, 26 assertions)
• git diff --check

Notes

• The focused suite exits successfully but emits the repository's existing managed-settings seed warnings.
• No database migration or new event type is required; manual entries use the existing inputtext event type.
• Not deployed locally as part of this PR-only request.