Eight declarations were kept in sync by hand with no parity assertion. The drift
was already in the tree: api-coverage-gate-e2e and representative-corpus declared
TERM_SESSION, but the real variable is TERM_SESSION_ID, so both scrubbed nothing
for that slot and leaked TERM_SESSION_ID into every child. Deleting the copies
removes the dead key with them -- there is no longer a second place to get wrong.
run-tests-harness keeps its local session-identity literal: that helper mirrors
the production runGsdTools to prove its CONTRACT, so it must not re-import what
it is testing. The config-LOCATION keys are a safety scrub rather than part of
that contract, so it spreads the canonical derived set and keeps the rest local.
Addresses review findings: Blocker 2, Blocker 3.
TEST_ENV_BASE blanks session-identity variables but none of the three that
decide WHERE a child process writes: CLAUDE_CONFIG_DIR, GSD_RUNTIME and
CODEX_HOME. The config-home resolver is env-first (runtime-homes.cts, the
dot-home case consults the env var before the home-derived fallback), so an
ambient CLAUDE_CONFIG_DIR in the developer's shell beats a call site that
sandboxes only HOME. The suite then writes into the developer's real config
directory -- including a registered skill under <configDir>/skills/ whose
body carries behavioural directives that load into later sessions.
Blank all three alongside the session-identity vars. `...env` still spreads
last, so the five call sites that already constrain these locally keep
winning with their explicit values.
TEST_ENV_BASE is re-declared in nine files, so the three lines are added
nine times rather than once. Consolidating the nine into a single exported
constant -- and fixing the TERM_SESSION / TERM_SESSION_ID drift between the
copies -- is deliberately left out of this change; see the PR body.
One call site needed adjusting. capability-state.test.cjs's
`capability state --runtime claude` CLI test passed no env at all and
compared the CHILD's resolved config dir against the PARENT process's
getGlobalConfigDir('claude'). That agreed only because the child inherited
the developer's ambient CLAUDE_CONFIG_DIR -- i.e. it passed *because of*
the leak. It now redirects both runtime homes into the sandbox and asserts
against values the test controls, so it is hermetic with the variable set
or unset.
Regression case folded into the owning module's test file rather than a new
bug-NNNN file, per scripts/lint-regression-test-names.cjs. It sets the
variable on the PARENT process, which is the actual vector; setting it in
the per-call env argument would exercise a path that was never broken.
