feat: fail-closed envelope + Core-authoritative routing + proxy enforcement - #42
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…(gap5) Gap1: Default Core-authoritative routing - Added requireCoreDecision config option (default true = fail closed) - When true: missing Core decision returns 503, no heuristic fallback - When false: explicit compatibility opt-out enables heuristic routing - Heuristic routing (evaluateTier, buildDynamicLadder, Q-learning) isolated behind opt-out - Tests in tests/router.test.ts for missing/unavailable/malformed/denied/valid Core decisions Gap5: Proxy envelope enforcement - Import and compose enforceExecutionEnvelope() in LlmGateNode.proxy() - Validates Core execution envelope before any upstream fetch in both JSON and SSE paths - Enforcement only when envelope available (Core decision fetched) - When requireCoreDecision=false (compatibility), no envelope exists and enforcement is skipped - Reuses forwarder's enforcement logic, no duplication - Error codes: envelope_missing, envelope_invalid, envelope_expired, envelope_tampered, model_disallowed, tool_disallowed, budget_exceeded Verification: 190 tests pass, typecheck clean, format clean, build clean, package verified
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Summary
Combines fail-closed envelope enforcement with Core-authoritative routing and proxy envelope enforcement.
Changes
Fail-closed envelope enforcement:
Core-authoritative routing (gap1):
Proxy envelope enforcement (gap5):
Verification
All local gates pass: npm test (190 pass), typecheck, format:check, build, verify:package, pack:dry-run, git diff --check
Related
Addresses Node #30 gaps 1, 2, 3, 5. Gaps 4/6 blocked by Core #220.