agent-sh/agnix v0.37.4 on GitHub

Issue batch: diagnostics, config UX, lifecycle, security taxonomy, and CI portability (closes #1151, #1159, #1160, #1161, #1162, #1163, #1164). CI now runs the workspace test suite on Linux, Windows, and macOS; Windows-sensitive tests normalize CRLF and canonical paths. Diagnostics now carry optional ranges, text output shows code frames, JSON/SARIF/LSP/WASM preserve spans, SARIF includes fixes, and --format github emits GitHub Actions annotations. Added agnix explain <RULE> with text/JSON output. .agnix.toml now supports extend, [rules.severity] per-rule overrides, and inline suppressions (agnix: noqa, agnix-disable-next-line). Rule lifecycle policy is documented, removed AS-* rule IDs warn in config, and 37 security-facing rules now carry CWE/OWASP/vulnerability-class metadata that SARIF exports as taxonomies.