test(snapshots): migrate the command-* toolchain cases to the PTY snapshot suite

[fengmk2]

Migrates the ~112 toolchain command-* cases (cache, check, config, dev,
dlx, doc, env, exec, fmt, helper, info, init, lint, nested, node, pack,
pm, preview, rebuild, run, staged, upgrade, version, vp-alias, vpr, vpx)
from both legacy trees, and removes the legacy dirs. Same-name cases that
existed in both trees merge as vp = ["local", "global"].

Hand conversions follow the established idioms: redirects and
2>&1 | grep wrappers become plain steps the snapshot asserts,
rm -rf *.tgz globs become explicit deterministic tarball names,
printf/appends become vpt write-file, || chains become vpt
grep-file/stat-file, tool json-sort and shell pipelines become node -e
scripts (which may exec vp themselves), and vp exec -c/vp dlx -c
pass their shell commands through vp's own shell handling. Steps that hit
interactive prompts under a PTY (vp config agent updates, vp run
missing-script suggestions, the npm link hint) run with tty = false,
matching the legacy runner's piped stdio.

Runner changes: a ./-prefixed argv[0] resolves relative to the step
cwd so a case can run the executable it packed; the local-registry server
now starts from the case root instead of the staged workspace, so a
fixture's pinned old Node (a .node-version under test) cannot pick the
runtime executing the TypeScript helper. Registry-bound fixtures declare
local-registry = true. New redaction rules mask the proxy's ephemeral
port (http:// anchored so help-text hosts stay verbatim), npm's
timestamped debug-log name, live spinner frames, and pnpm's
nondeterministic progress lines.

command-env-setup-external-vp stays in the legacy tree: it rebinds
VP_HOME to a workspace-relative path via shell expansion, which static
step envs cannot express.

Part of #2116.

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[fengmk2]

• test(snapshots): remove the parked snap-tests-todo tree #2145
• test(snapshots): migrate the last blocked snap tests to the PTY suite #2143
• test(snapshots): migrate the command-* package-manager passthrough cases #2141
• test(snapshots): migrate the command-* toolchain cases to the PTY snapshot suite #2138 👈 (View in Graphite)
• main

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[graphite-app]

Merge activity

• Jul 10, 2:05 PM UTC: fengmk2 added this pull request to the Graphite merge queue.
• Jul 10, 2:13 PM UTC: Merged by the Graphite merge queue.