Add !reset_story wizard command to restart story without server restart

[Copilot]

Story resets currently require a full server restart, disconnecting all players and losing session state.

Changes

Command Layer (tale/cmds/wizard.py)

• Added !reset_story wizard command with confirmation dialog
• Catches and reports exceptions during reset

Driver Layer (tale/driver.py)

• Implemented Driver.reset_story() method that:
  • Clears deferreds, items, NPCs, locations, exits from MudObjRegistry
  • Preserves player objects by filtering by vnum before registry clear
  • Reloads story module and zone modules via sys.modules removal + importlib.reload()
  • Resets game clock and re-registers periodicals
  • Moves players to starting locations

Tests (tests/test_reset_story.py)

• Unit tests for command registration, confirmation flow, and driver integration

Usage

# As wizard in-game
!reset_story
# Prompts: "Are you sure you want to reset the story? This will affect all players!"
# On confirmation: resets world, preserves player inventory/stats/connections

Preserved vs Reset

Preserved: Player objects, inventory, stats, privileges, active connections, server uptime

Reset: All NPCs/items/locations/exits, deferreds, game clock, zone state

The solution is general at the Driver level as requested, working with any story type.

Original prompt

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This section details on the original issue you should resolve

<issue_title>investigate restarting/resetting story</issue_title>
<issue_description>Currently, a story is started when the server is started, ie

python stories.my_story.story

investigate if it's possible to restart a story, without having to restart the server.

preferably a general solution, either in Story, or Driver level.

it should be a wizard command, like "reset_story".</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes investigate restarting/resetting story #127

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