Houmgaor 77e7969579 feat(campaign): implement Event Tent campaign system ...

Adds the full campaign/event-tent feature:

Packet layer:
- MsgMhfApplyCampaign: Unk0/Unk1/Unk2 → CampaignID/Code (null-terminated 16-byte string)
- MsgMhfAcquireItem: Unk0/Length/Unk1 → RewardIDs []uint32
- MsgMhfEnumerateItem: remove Unk0/Unk1 (RE'd: zeroed + always-2, ignored)
- MsgMhfStateCampaign: Unk1 → NullPadding (RE'd: always zero)
- MsgMhfTransferItem: Unk0/Unk1/Unk2 → QuestID/ItemType/Quantity (RE'd)

Handler layer (handlers_campaign.go):
- handleMsgMhfEnumerateCampaign: reads campaigns, categories, links from DB;
  prefix moved into pascal string slot 3 of each event entry (RE confirmed
  3-section response format — removes spurious intermediate section)
- handleMsgMhfStateCampaign: returns stamp count and redeemable flag
- handleMsgMhfApplyCampaign: validates and records code redemption
- handleMsgMhfEnumerateItem: lists rewards gated by stamp count
- handleMsgMhfAcquireItem: marks rewards as claimed
- handleMsgMhfTransferItem: records campaign quest completion (item_type=9)

Quest gating (handlers_quest.go):
- makeEventQuest: for QuestTypeSpecialTool, check campaign stamp count and
  deadline before allowing the quest (WriteBool true/false)

Database:
- 0010_campaign.sql: 8-table schema (campaigns, categories, links, rewards,
  claimed, state, codes, quest)
- CampaignDemo.sql: community-researched live game campaign data

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..

compression

feat(savedata): add tier 1 data integrity protections

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channel_isolation_test.go

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channel_registry_local.go

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channel_registry_test.go

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channel_registry.go

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char_save_locks.go

feat(savedata): add tier 2 integrity protections

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client_connection_simulation_test.go

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constants_quest.go

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constants_raviente.go

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constants_time.go

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doc.go

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guild_model.go

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handlers_achievement_test.go

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handlers_achievement.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_bbs_test.go

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handlers_bbs.go

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handlers_cafe_test.go

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handlers_cafe.go

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handlers_campaign_test.go

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handlers_campaign.go

feat(campaign): implement Event Tent campaign system

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handlers_caravan_test.go

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handlers_caravan.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_cast_binary_test.go

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handlers_cast_binary.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_character_test.go

feat(savedata): recover from rotating backups on hash mismatch

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handlers_character.go

feat(savedata): recover from rotating backups on hash mismatch

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handlers_clients_test.go

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handlers_clients.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_commands_test.go

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handlers_commands.go

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handlers_data_extended_test.go

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handlers_data_paper_tables.go

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handlers_data_paper_test.go

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handlers_data_paper.go

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handlers_data_test.go

feat(savedata): add tier 2 integrity protections

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handlers_data.go

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handlers_discord_test.go

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handlers_discord.go

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handlers_distitem_test.go

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handlers_distitem.go

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handlers_diva_test.go

feat(diva): implement Diva Defense point accumulation (#168)

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handlers_diva.go

feat(diva): implement Diva Defense point accumulation (#168)

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handlers_event_test.go

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handlers_event.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_festa_test.go

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handlers_festa.go

fix(festa): filter trials and rewards for Forward.5 compatibility (#156)

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handlers_gacha_test.go

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handlers_gacha.go

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handlers_goocoo_test.go

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handlers_goocoo.go

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handlers_guild_adventure_test.go

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handlers_guild_adventure.go

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handlers_guild_alliance_test.go

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handlers_guild_alliance.go

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handlers_guild_board_test.go

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handlers_guild_board.go

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handlers_guild_cooking_test.go

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handlers_guild_cooking.go

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handlers_guild_icon_test.go

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handlers_guild_info_test.go

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handlers_guild_info.go

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handlers_guild_member_test.go

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handlers_guild_member.go

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handlers_guild_mission_test.go

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handlers_guild_mission.go

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handlers_guild_ops_test.go

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handlers_guild_ops.go

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handlers_guild_scout_test.go

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handlers_guild_scout.go

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handlers_guild_test.go

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handlers_guild_tresure_test.go

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handlers_guild_tresure.go

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handlers_guild.go

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handlers_helpers_test.go

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handlers_helpers.go

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handlers_house_test.go

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handlers_house.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_items_tables.go

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handlers_items_test.go

fix(items): stop G-rank Workshop/Cog softlock on missing ACK

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handlers_items.go

feat(campaign): implement Event Tent campaign system

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handlers_kouryou_test.go

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handlers_kouryou.go

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handlers_mail_test.go

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handlers_mail.go

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handlers_mercenary_test.go

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handlers_mercenary.go

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handlers_misc_test.go

fix(items): stop G-rank Workshop/Cog softlock on missing ACK

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handlers_misc.go

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handlers_mutex_test.go

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handlers_mutex.go

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handlers_object_test.go

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handlers_object.go

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handlers_plate_test.go

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handlers_plate.go

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handlers_quest_backport_test.go

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handlers_quest_test.go

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handlers_quest.go

feat(campaign): implement Event Tent campaign system

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handlers_register_test.go

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handlers_register.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_rengoku_integration_test.go

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handlers_rengoku_test.go

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handlers_rengoku.go

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handlers_reserve_test.go

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handlers_reserve.go

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handlers_reward_test.go

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handlers_reward.go

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handlers_savedata_integration_test.go

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handlers_scenario_test.go

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handlers_scenario.go

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handlers_seibattle_test.go

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handlers_seibattle.go

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handlers_semaphore_test.go

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handlers_semaphore.go

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handlers_session_test.go

fix(items): stop G-rank Workshop/Cog softlock on missing ACK

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handlers_session.go

docs(stubs): annotate empty handlers and add unimplemented reference doc

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handlers_shop_gacha_test.go

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handlers_shop_test.go

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handlers_shop.go

docs(gacha): clarify G1-GG vs ZZ configuration to prevent client crashes (#175)

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handlers_simple_test.go

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handlers_stage_test.go

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handlers_stage.go

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handlers_table_test.go

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handlers_table.go

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handlers_tactics_test.go

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handlers_tactics.go

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handlers_test.go

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handlers_tournament_test.go

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handlers_tournament.go

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handlers_tower_test.go

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handlers_tower.go

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handlers_users_test.go

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handlers_users.go

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handlers_util_test.go

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integration_test.go

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minidata_store_test.go

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minidata_store.go

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model_character.go

feat(savedata): add tier 1 data integrity protections

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quest_cache_test.go

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quest_cache.go

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quest_json_parser.go

feat(quests): implement all remaining binary sections in JSON format

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quest_json_test.go

feat(quests): implement all remaining binary sections in JSON format

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quest_json.go

feat(quests): implement all remaining binary sections in JSON format

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raviente.go

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rengoku_binary_test.go

feat(rengoku): validate and log Hunting Road config on startup

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rengoku_binary.go

feat(rengoku): validate and log Hunting Road config on startup

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rengoku_build_test.go

feat(rengoku): support rengoku_data.json as editable config source

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rengoku_build.go

feat(rengoku): support rengoku_data.json as editable config source

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repo_achievement_test.go

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repo_achievement.go

fix(achievement): fix test failures from migration 0008 side effects

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repo_cafe_test.go

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repo_cafe.go

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repo_character_test.go

test(mercenary): cover SaveMercenary rastaID=0 guard (#163)

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repo_character.go

feat(savedata): recover from rotating backups on hash mismatch

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repo_distribution_test.go

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repo_distribution.go

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repo_diva_test.go

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repo_diva.go

feat(diva): implement Diva Defense point accumulation (#168)

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repo_event_test.go

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repo_event.go

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repo_festa_test.go

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repo_festa.go

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repo_gacha_test.go

fix(gacha): add items to reward pool test entries

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repo_gacha.go

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repo_goocoo_test.go

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repo_goocoo.go

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repo_guild_adventure.go

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repo_guild_alliance.go

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repo_guild_cooking.go

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repo_guild_hunt.go

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repo_guild_posts.go

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repo_guild_rp.go

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repo_guild_test.go

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repo_guild.go

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repo_house_test.go

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repo_house.go

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repo_interfaces.go

feat(savedata): recover from rotating backups on hash mismatch

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repo_mail_test.go

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repo_mail.go

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repo_mercenary_test.go

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repo_mercenary.go

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repo_misc_test.go

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repo_misc.go

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repo_mocks_test.go

feat(savedata): recover from rotating backups on hash mismatch

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repo_rengoku_test.go

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repo_rengoku.go

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repo_scenario_test.go

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repo_scenario.go

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repo_session_test.go

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repo_session.go

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repo_shop_test.go

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repo_shop.go

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repo_stamp_test.go

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repo_stamp.go

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repo_tower_test.go

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repo_tower.go

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repo_user_test.go

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repo_user.go

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savedata_lifecycle_monitoring_test.go

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session_lifecycle_integration_test.go

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svc_achievement_test.go

feat(achievement): add rank-up notifications (#165)

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svc_achievement.go

feat(achievement): add rank-up notifications (#165)

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svc_festa_test.go

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svc_festa.go

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svc_gacha_test.go

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svc_gacha.go

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svc_guild_test.go

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svc_guild.go

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svc_mail_test.go

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svc_mail.go

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svc_tower_test.go

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svc_tower.go

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sys_capture.go

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sys_channel_server_test.go

feat(rengoku): validate and log Hunting Road config on startup

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sys_channel_server.go

feat(rengoku): support rengoku_data.json as editable config source

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sys_language_test.go

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sys_language.go

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sys_object_test.go

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sys_semaphore_test.go

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sys_semaphore.go

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sys_session_test.go

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sys_session.go

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sys_stage_test.go

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sys_stage.go

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sys_time_test.go

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sys_time.go

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test_helpers_test.go

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testhelpers_db.go

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user_binary_store_test.go

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user_binary_store.go

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