node:net: deterministic inventory parity tail

[andrewtdiz]

Summary

test_parity_net is still listed as a module-inventory known failure on current origin/main, but the broad generated fixture now mostly probes deterministic value shapes for node:net: IP classifiers, default auto-select-family settings, BlockList, SocketAddress, and unconnected Server / Socket instance surfaces.

Proposed focused scope

Stabilize and/or implement the remaining deterministic node:net inventory tail so test_parity_net can become an exact Node/Perry parity probe instead of a skip-listed module-inventory gap.

Candidate surfaces:

• net.isIP, isIPv4, isIPv6 output and validation shape
• default auto-select-family getters/setters
• BlockList rule add/check/toJSON/rules/isBlockList behavior
• SocketAddress constructor/parse/accessors
• unconnected Server and Socket constructor/property/method shape
• stale known-failure, parity-threshold, and matrix-baseline entries if the probe passes after fixes

Non-goals

No live network server/client behavior, no external sockets, no IPC endpoint tests, no TLS/HTTP behavior, and no broad stream lifecycle rewrites. Live connection semantics should stay in focused net/socket issues.

[andrewtdiz]

I am taking this focused node:net inventory-tail cut from fresh origin/main branch codex/node-net-loopback-inventory-20260604.

Planned PR cut:

• establish Node 26 output for test_parity_net and focused fixtures if a specific runtime edge appears;
• reproduce current Perry output before changing code;
• fix or stabilize only deterministic node:net surfaces: IP classifiers, auto-select-family config, BlockList, SocketAddress, and unconnected Server / Socket shape;
• remove stale net known-failure / threshold / matrix-baseline entries only if the broad fixture is byte-for-byte clean.

Non-goals: live TCP connection behavior, IPC endpoints, TLS/HTTP behavior, and broad stream lifecycle rewrites.

[andrewtdiz]

Implemented in draft PR #4439: #4439

Validation summary:

• test-files/test_parity_net.ts now matches Node 26 byte-for-byte (75 stdout lines, empty diff).
• Focused net node-suite fixtures also match Node 26: classes/blocklist-socketaddress.ts, method-values/socket-server.ts, and method-values/server-async-dispose.ts.
• Final checks passed: cargo build -q -p perry, focused perry-codegen ext-registry unit test, cargo fmt --all -- --check, parity JSON validation, and ./scripts/check_file_size.sh.

[andrewtdiz]

Opened PR #4439: #4439

This completes the deterministic node:net inventory parity pass, including ext-net handle method/property dispatch, net native result typing for method-value binding, Server[Symbol.asyncDispose]() handling, unlistened-server liveness parity, and the small-handle Array.isArray guard.

Validated with cargo fmt/diff/file-size/JSON checks, modified-crate cargo check, full perry/perry-stdlib/perry-ext-net build, the targeted perry-codegen regression test, and Node 26 parity comparisons for the generated inventory plus focused net class, method-value, validation, export, and IP fixtures.