Go SDK v0.1.1

Go SDK v0.1.1 publishes the agent-readable timeline helpers added in commit dccdf88.\n\nHighlights:\n- Adds explicit app-owned product action and network milestone helpers.\n- Keeps primitive metadata only and strips query/hash/full URL text from route templates.\n- Preserves trace/session correlation without global net/http patching, payload capture, or header capture.\n\nVerification:\n- CI: https://github.com/LogBrewCo/sdk/actions/runs/27424484921\n- Public module tag: go/logbrew/v0.1.1\n- Public module verifier: scripts/check_registry_publication.py --target go --version 0.1.1