User story
As a publisher operator, I want an opt-in, tab-local GPT runtime diagnostics overlay so that I can inspect GPT-observed slot lifecycles and exact DOM bindings without modifying publisher or auction behavior.
Scope
- Deployment-controlled and query-activated diagnostics runtime.
- Bounded GPT lifecycle capture with conservative correlation.
- Read-only API, local export, closed-shadow panel, and viewport badges.
- Automated browser, runtime, and privacy/non-interference coverage.
User story
As a publisher operator, I want an opt-in, tab-local GPT runtime diagnostics overlay so that I can inspect GPT-observed slot lifecycles and exact DOM bindings without modifying publisher or auction behavior.
Scope