feat: ability categories — migrate from flat 'datamachine' to semantic subcategories

[chubes4]

Context

Data Machine core is introducing ability categories (Extra-Chill/data-machine#1052) to solve pipeline tool bloat and align with the wp-ai-client migration (#1027). The flat 'datamachine' category is being replaced with 18+ semantic subcategories across core and extensions.

data-machine-events has 31 ability registrations across 20 files, all using 'category' => 'datamachine'. These need to migrate to extension-specific categories.

Proposed categories

Category	Abilities
datamachine-events/events	event-query, event-date-query, event-update, event-health, event-quality-audit, filter, calendar, upcoming-count, duplicate-detection, encoding-fix, batch-time-fix, ticket-url-resync, meta-sync
datamachine-events/venues	venue CRUD, venue-map, geocoding
datamachine-events/settings	events extension settings
datamachine-events/testing	ticketmaster-test, dice-fm-test, event-scraper-test

What needs to happen

1. Register the extension categories in data-machine-events.php bootstrap (on wp_abilities_api_categories_init)
2. Update all 31 'category' => 'datamachine' to the correct subcategory across 20 files
3. Add ability metadata to the 9 chat tool registerTool() calls in inc/Api/Chat/Tools/
4. The upsert_event handler tool (registered via chubes_ai_tools in EventUpsertFilters.php) doesn't need changes — handler tools bypass category filtering

Files to update

Abilities (category string replacement):

• inc/Abilities/EventQueryAbilities.php → datamachine-events/events
• inc/Abilities/EventDateQueryAbilities.php → datamachine-events/events
• inc/Abilities/EventUpdateAbilities.php → datamachine-events/events
• inc/Abilities/EventHealthAbilities.php → datamachine-events/events
• inc/Abilities/EventQualityAuditAbilities.php → datamachine-events/events
• inc/Abilities/FilterAbilities.php → datamachine-events/events
• inc/Abilities/CalendarAbilities.php → datamachine-events/events
• inc/Abilities/UpcomingCountAbilities.php → datamachine-events/events
• inc/Abilities/DuplicateDetectionAbilities.php → datamachine-events/events
• inc/Abilities/EncodingFixAbilities.php → datamachine-events/events
• inc/Abilities/BatchTimeFixAbilities.php → datamachine-events/events
• inc/Abilities/TicketUrlResyncAbilities.php → datamachine-events/events
• inc/Abilities/MetaSyncAbilities.php → datamachine-events/events
• inc/Abilities/TimezoneAbilities.php → datamachine-events/events
• inc/Abilities/VenueAbilities.php → datamachine-events/venues
• inc/Abilities/VenueMapAbilities.php → datamachine-events/venues
• inc/Abilities/GeocodingAbilities.php → datamachine-events/venues
• inc/Abilities/SettingsAbilities.php → datamachine-events/settings
• inc/Abilities/TicketmasterTest.php → datamachine-events/testing
• inc/Abilities/DiceFmTest.php → datamachine-events/testing
• inc/Abilities/EventScraperTest.php → datamachine-events/testing

Chat tools (add ability meta):

• inc/Api/Chat/Tools/UpdateEvent.php
• inc/Api/Chat/Tools/UpdateVenue.php
• inc/Api/Chat/Tools/GetVenueEvents.php
• inc/Api/Chat/Tools/EventHealthCheck.php
• inc/Api/Chat/Tools/EventQualityAudit.php
• inc/Api/Chat/Tools/VenueHealthCheck.php
• inc/Api/Chat/Tools/FindBrokenTimezoneEvents.php
• inc/Api/Chat/Tools/FixEventTimezone.php
• inc/Api/Chat/Tools/TestEventScraper.php

Reference

• Core PR: feat: ability categories and tool-ability linkage for pipeline tool scoping data-machine#1052
• Code extension PR: feat: ability categories and tool-ability linkage data-machine-code#17
• Architecture issue: arch: Ability-linked permission resolution across all interface layers (tools, REST, CLI) data-machine#924