peptiderepo ff6ad5eba1 Opik Wave 1 Commit 1: Client, Trace Context, and test infrastructure ...

Add the core Opik observability classes:

- class-opik-client.php: HTTP REST client for Comet Opik
  * POST traces and spans with exponential backoff (3 retries)
  * Batch endpoints support (max 100 items per batch)
  * Auth headers: Authorization + Comet-Workspace
  * Never logs secrets; errors logged with context

- class-opik-trace-context.php: Per-request trace singleton
  * Initialized at article generation start
  * Manages span stack: start_span(), end_span()
  * Finalizes complete trace with all child spans
  * Teardown clears context for next request

- class-opik-settings.php: WordPress Settings API integration
  * Toggle: 'Enable Opik tracing' (default off)
  * Text field: 'Opik project name' (default 'prautoblogger')
  * Checkbox: 'Capture full prompt text' (opt-in)
  * Read-only status: API key configured, last dispatch, queue depth
  * Never renders API key in admin HTML

- Unit tests: test-opik-client.php, test-opik-trace-context.php
  * Mock HTTP via Brain\Monkey
  * Verify batch size limits, auth headers, retry logic
  * Verify UUID generation, span stacking, context teardown

All files ≤ 300 LOC per 300-line rule.
Feature flag default OFF (PRAUTOBLOGGER_OPIK_ENABLED option).

Part of Wave 1 (observability skeleton).
Target: v0.12.0

2026-04-23 14:48:27 +00:00

7.2 KiB

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