2 Commits

Author	SHA1	Message	Date
Garry Tan	4e0516031b	test(security): 4 new ensemble tests — 3-way agreement rule ... Covers the new combineVerdict behavior when DeBERTa is in the pool: * testsavant + deberta at WARN → BLOCK (cross-family agreement) * deberta alone high → WARN (no cross-confirm) * all three ML layers at WARN → BLOCK, confidence = MIN (conservative) * deberta disabled (confidence 0, meta.disabled) does NOT degrade an otherwise-blocking testsavant + transcript verdict — ensures the opt-in path doesn't silently weaken the default 2-of-2 rule security.test.ts: 29 tests / 71 expectations. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-20 04:55:23 +08:00
Garry Tan	1a1a182251	test(security): add security.ts unit tests (25 tests, 62 assertions) ... Covers the pure-string operations that must behave deterministically in both compiled and source-mode bun contexts: * THRESHOLDS ordering invariant (BLOCK > WARN > LOG_ONLY > 0) * combineVerdict ensemble rule — THE critical path: - Empty signals → safe - Canary leak always blocks (regardless of ML signals) - Both ML layers >= WARN → BLOCK (ensemble_agreement) - Single layer >= BLOCK → WARN (single_layer_high) — the Stack Overflow FP mitigation that prevents one classifier killing sessions alone - Max-across-duplicates when multiple signals reference the same layer * Canary generation + injection + recursive checking: - Unique CANARY-XXXXXXXXXXXX tokens (>= 48 bits entropy) - Recursive structure scan for tool_use inputs, nested URLs, commands - Null / primitive handling doesn't throw * Payload hashing (salted sha256) — deterministic per-device, differs across payloads, 64-char hex shape * logAttempt writes to ~/.gstack/security/attempts.jsonl * writeSessionState + readSessionState round-trip (cross-process) * getStatus returns valid SecurityStatus shape * extractDomain returns hostname only, empty string on bad input All 25 tests pass in 18ms — no ML, no network, no subprocess spawning. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-19 19:06:52 +08:00