- New Cost_Tracker class: logs every API call (model, tokens, cost), enforces
monthly budgets with hard-stop mode, provides aggregated reporting
- New llm_costs database table with indexes on created_at, model, operation
- Modified LLM class: call_openrouter_with_usage() extracts token usage from
OpenRouter responses; budget gate checks before each API call
- Admin settings: monthly budget (USD), enforcement mode (disabled/warn/hard-stop),
cost log retention period
- Admin cost dashboard: budget progress bar, daily cost chart (Chart.js),
per-model and per-operation breakdowns, recent API call log
- PHPUnit tests: 16 tests covering cost calculation, pricing lookups,
budget enforcement logic, and model validation
- Updated ARCHITECTURE.md with new table schema, data flow, and key decisions
- Updated CONVENTIONS.md with "how to add cost tracking for a new operation"
- Version bump to 2.4.0
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Introduces GitHub Actions workflows for continuous integration and
deployment. CI runs PHP linting (7.4, 8.1, 8.3), PHPCS with WordPress
coding standards, PHPUnit tests across PHP versions, and JS syntax
checks. Deployment to Hostinger via FTPS triggers on push to main
after all CI checks pass, with optional LiteSpeed cache purge.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
