S00-026: Verify pinned Linux runtime and isolated locked dependency access

Changes: Add a bounded reproducible HTTPS/checksum/runtime probe under environment-access, vendor checksums, unchanged parent manifest/lock copies, strict npm settings, result and reproduction notes. Record evidence and QA handoff; submit S00-026 without completing parent tasks.
Validation: Run verify.py twice successfully: vendor Linux archive SHA256 matched, Node 24.21.0/npm 11.19.0 executed, fresh-cache npm ci installed eight integrity-locked packages with scripts disabled, parent bytes stayed unchanged and Stanza import passed. tasks.py validate, git diff --check and scoped file whitespace checks passed. No browser/WSS, detached signature or provenance audit performed.

Task: S00-026
Agent: auto-ci-cd-4255c34da227
Role: ci-cd
Action: claim
Status: review

Task title: Provide approved access to the pinned Linux experiment artifacts

planning/stages/S00.md

@@ -30,7 +30,7 @@
 - [S00-023](../tasks/S00-023.md): Устранить прерывание: Выбрать IndexedDB wrapper и migration policy — storage; blocked.
 - [S00-024](../tasks/S00-024.md): Устранить прерывание: Restore access to the pinned Linux XMPP experiment toolchain — ci-cd; blocked.
 - [S00-025](../tasks/S00-025.md): Устранить прерывание: Устранить прерывание: Выбрать IndexedDB wrapper и migration policy — storage; blocked.
-- [S00-026](../tasks/S00-026.md): Provide approved access to the pinned Linux experiment artifacts — ci-cd; todo.
+- [S00-026](../tasks/S00-026.md): Provide approved access to the pinned Linux experiment artifacts — ci-cd; review.
 - [S00-027](../tasks/S00-027.md): Restore approved npm registry connectivity for the OMEMO2 backend investigation — ci-cd; todo.
 - [S00-028](../tasks/S00-028.md): Repair conflicting Codex harness sandbox arguments — ci-cd; todo.
 - [S00-010](../tasks/S00-010.md): Gate: Профиль и проверка стека — qa; todo.