Release v0.3.0

What's changed

Added

• migrations/migrate.sh — idempotent HTTP-based migration runner; uses curl against the ClickHouse HTTP interface (port 8123) so no clickhouse-client binary is required; tracks applied versions in <db>.schema_migrations using a ReplacingMergeTree table; splits multi-statement files on semicolons via awk and executes each statement individually
• migrate service in docker-compose.yml — runs on every docker compose up using alpine:3.21; applies only pending migrations; the proxy service starts only after the migrate service completes successfully

Fixed

• Compressed response body in raw field — the Claude Code VSCode extension (and TypeScript SDK) explicitly sets Accept-Encoding: gzip, deflate, br; when forwarded verbatim, Go's http.Transport treats compression as application-managed and does not decompress the response, causing the audit raw field to contain binary data and thinking/assistant_text to be empty; fixed by adding Accept-Encoding to the stripped headers list so http.Transport negotiates encoding itself and transparently decompresses before the TeeReader sees the body
• Agent detection for VSCode extension — detectAgent used a case-sensitive strings.Contains check; the Claude Code VSCode extension sends Claude-Code (capitalised) which fell through to "unknown"; fixed by applying strings.ToLower before comparison
• 003_request_capture.sql — both ALTER TABLE statements used unqualified table name audit_events; the old clickhouse-client --database=audit flag set an implicit database context that the HTTP-based migration runner does not; fixed by using fully qualified audit.audit_events