[MMinasyan]

Changes

• Return a ready request or explicit interruption from Engine request sources; preserve callback errors unchanged instead of interpreting cancellation-shaped causes.
• Call the Engine directly from the Harness and remove the publication-error interception path.
• Carry explicit hook and strategy interruption through existing settlement, preserving execution knowledge, usage, recovery and resource disposal. HTTP and store schemas are unchanged.

Tests

• Baseline regressions for callback error identity and request-hook failure after cancellation failed before the correction and pass afterward.
• Coverage includes request-result validation, retained output, hook knowledge, automatic/manual strategy outcomes on memory and SQLite, publication failure and Wait retention, opening cancellation, disposal and input drain.
• Full Go and race suites, vet, frontend tests, protocol/Wails freshness, installer checks, tracked-package security checks and Wails build passed.