fix: calendar query and taxonomy counts use start_datetime as primary

[chubes4]

Summary

Follow-up to #136 — the calendar query layer was still filtering exclusively by _datamachine_event_end_datetime, making 21k+ events without end meta invisible.

• EventQueryBuilder: Upcoming/past filter and past/future counts now use _datamachine_event_datetime as primary with _datamachine_event_end_datetime OR fallback
• Taxonomy_Helper: Filter bar term counts use same start-primary/end-fallback pattern
• PageBoundary: Already used LEFT JOIN on end_datetime — no change needed

Pattern everywhere: upcoming = start >= now OR end >= now, past = start < now AND (end < now OR no end meta)

[homeboy-ci]

Homeboy Results — data-machine-events

Homeboy

Failure Digest

Lint Failure Digest

• No structured lint details available.
• Full lint log: https://github.com/Extra-Chill/data-machine-events/actions/runs/23387166910

Test Failure Digest

• Failed tests: 30
• No structured test failure details available.
• Full test log: https://github.com/Extra-Chill/data-machine-events/actions/runs/23387166910

Audit Failure Digest

• Drift increased: no
• No structured audit findings available.
• Full audit log: https://github.com/Extra-Chill/data-machine-events/actions/runs/23387166910

Autofixability classification

• Overall: auto_fixable
• Autofix enabled: yes
• Autofix attempted this run: no
• Auto-fixable failed commands:
  • lint
  • test
• Failed commands with available automated fixes:
  • lint
  • test

Machine-readable artifacts

• homeboy-lint-summary.json
• homeboy-test-failures.json
• homeboy-audit-summary.json
• homeboy-autofixability.json

⚡ Scope: changed files only

✅ audit (changed files only)

• Drift increased: no

❌ lint (changed files only)

❌ test (changed files only)

Tooling versions

• Homeboy CLI: homeboy 0.85.0+c876a83
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: unknown
• Action: Extra-Chill/homeboy-action@v2

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Homeboy Action v1