Use make_initrd for functional tests and update nanvix version

[ppenna]

Summary

Refactor the build script to fix breaking changes when bumping Nanvix to v0.13.19. In standalone mode, nanvixd now requires an initrd image that bundles the application binary with system daemons, rather than accepting a raw ELF path directly.

Changes

z.py

• Remove subprocess usage; use self.run() with docker=False for all tool invocations (mkramfs, nanvixd).
• Split test() into standalone vs non-standalone paths: standalone mode runs smoke+integration via Makefile then delegates functional tests to new _run_functional_standalone() which uses self.make_initrd().
• Non-standalone modes continue to delegate entirely to the Makefile.
• Refactor _run_tests_windows() to use make_initrd for bundling test binaries with system daemons, catch SystemExit instead of checking return codes, and clean up initrd artifacts in finally blocks.

Makefile.nanvix

• test-functional now dispatches by PROCESS_MODE: standalone delegates to ./z.sh (Python handles initrd creation); non-standalone runs test_libxml2.elf via nanvixd.elf directly (Docker and native paths).
• This ensures test_libxml2.elf actually executes in all deployment modes, not just on Windows standalone.

Other files

• nanvix.toml: bump nanvix-version to 0.13.19.
• nanvix-ci.yml: bump zutil-version to v0.9.0.
• z.sh / z.ps1: add version-mismatch re-bootstrap logic.

Related PRs

• enhancement: use make_initrd for functional tests and update nanvix version zlib#203
• Use make_initrd for functional tests and update nanvix version bzip2#230
• enhancement: use make_initrd for functional tests and update nanvix version xz#47
• Use make_initrd for functional tests and update nanvix version libffi#194

[Copilot]

Pull request overview

Updates the libxml2 Nanvix build/test integration for Nanvix 0.13.19, whose standalone nanvixd now requires an initrd image bundling the test ELF with system daemons instead of a raw ELF path. Drives initrd creation through the shared make_initrd helper from nanvix-zutil 0.9.0 and reshapes the test pipeline so functional tests actually execute in every deployment mode.

Changes:

• Bump nanvix-version to 0.13.19 and nanvix-zutil to v0.9.0 across CI, nanvix.toml, and the z.sh/z.ps1 bootstrappers (with auto re-bootstrap on version mismatch).
• Refactor z.py to drop direct subprocess use, split test() into standalone vs. non-standalone paths, add _run_functional_standalone(), and rework _run_tests_windows() to use make_initrd + self.run.
• Update Makefile.nanvix:test-functional to dispatch by PROCESS_MODE: standalone delegates back to ./z.sh, while Docker/native non-standalone modes run test_libxml2.elf directly via nanvixd.elf.

Show a summary per file

File	Description
.nanvix/nanvix.toml	Bumps pinned nanvix-version to 0.13.19.
.github/workflows/nanvix-ci.yml	Bumps zutil-version to v0.9.0 in both CI job entries.
z.sh	Pins zutil 0.9.0 and re-bootstraps on version mismatch.
z.ps1	PowerShell counterpart: pins 0.9.0 and re-bootstraps with a venv-presence check.
.nanvix/Makefile.nanvix	Implements real functional test execution via nanvixd.elf + mkramfs.elf for Docker/native, delegates standalone to ./z.sh.
.nanvix/z.py	Routes tests through make_initrd, adds _run_functional_standalone, and replaces subprocess calls with self.run(..., docker=False).

Copilot's findings

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• Files reviewed: 6/6 changed files
• Comments generated: 6

[Copilot]

Copilot's findings

• Files reviewed: 6/6 changed files
• Comments generated: 1