feat(http-recorder): sync recorder v0.3

[kitlangton]

Summary

• sync the in-sourced package with effect-http-recorder 0.3 behavior and its four public Layer APIs
• expose hasCassetteSync and removeCassetteSync for safe fixture gating and focused cassette refreshes
• remove the OpenCode-only internal export, compatibility alias, generic WebSocket executor, and private cassette seams
• migrate V2 and V1 recorded HTTP harnesses entirely onto the public recorder API
• remove the dormant WebSocket golden case that had no cassette while retaining mocked WebSocket transport coverage
• add atomic replay matching, stricter cassette validation, secure redaction, and dynamic Effect WebSocket recording

Validation

• full monorepo Turbo typecheck: 31 packages passed
• http-recorder: 47 tests passed
• LLM provider tests: 191 passed, 29 fixture-gated tests skipped
• V2 core recorded session test: passed
• V1 native recorded tests: 3 passed, 1 fixture-gated test skipped
• package build and clean-consumer tarball verification: passed
• targeted lint: 0 errors

Skipped provider tests

The 29 skips are recorded scenarios without cassettes at their currently derived paths: 27 golden scenarios, one Bedrock cache case, and one Anthropic malformed-order case. They are not skipped due to filters, credentials, or disabled implementation coverage.