metadata: include ids in current-group list field (fix "None" publisher chip)

[ajslater]

Summary

When viewing the metadata dialog for a top-level group (publisher, imprint, series, volume, folder, story arc), the current group's *_list field was emitted without ids. The frontend's toVuetifyItem requires ids (or pk) to build chip values; without them every entry collapsed into a single "None" chip.

Reproduced via /api/v3/p/25,102/metadata returning:

"publisherList": [
    {"name": "pow Studios"},
    {"name": "POW Studios"}
]

…which the metadata dialog rendered as one "None" chip.

Root cause

_highlight_current_group used a simplistic .values("name") query. The sibling helper _query_groups (which handles parent group lists) already had the right shape — group_by(name) + JsonGroupArray("id"). Only the current-group path was missing it.

Fix

Mirror the _query_groups shape: group_by(*only) + JsonGroupArray("id", distinct=True, order_by="id"), projected via .values("ids", *only). Each entry now carries its aggregated ids and the frontend renders proper clickable chips.

Latent bugs in the same code path, also fixed

While auditing for "similar components with similar data," three related defects shared the root cause and are resolved by the same edit:

1. Single-id chips were silently unclickable. MetadataText reads value.ids || [value.pk]; without ids, the link evaluated to [undefined] and clicking did nothing.
2. Volume number_to was never selected, so formattedVolumeName(name, numberTo) always rendered without the range suffix.
3. storyArcList was always empty — StoryArc.__name__.lower() produced storyarc_list, but the serializer reads story_arc_list. The data was being attached to an attribute nothing read. Mapped via _GROUP_LIST_FIELD_OVERRIDES.

Test plan

• make fix clean
• make lint Python: 0 errors, 0 warnings, 0 notes (the trailing remark markdown error is pre-existing on develop, verified by stashing)
• uv run pytest tests/ — 26 passed
• Manual: open metadata dialog for a multi-id publisher selection, confirm chips render with publisher names (not "None") and link to the correct filter
• Manual: open metadata for a single publisher, confirm clicking the name navigates
• Manual: open metadata for a Volume group, confirm the number range shows
• Manual: open metadata for a StoryArc group, confirm storyArcList is populated

🤖 Generated with Claude Code