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OmniRoute/stryker.conf.json
MumuTW c06cd83022 fix(sse): shallow per-target copy for the combo attempt body (#7847) (#8553) 
* fix(sse): shallow per-target copy for the combo attempt body (#7847)

combo.ts deep-cloned the request body for every target. On a 3.05 MiB agent request that
is 9.53 MiB at 3 targets, and it scales linearly:

  3 targets    9.53 MiB (3.12x wire)  ->  ~0.001 MiB
  5 targets   15.89 MiB (5.19x wire)  ->  ~0.000 MiB
 10 targets   31.78 MiB (10.39x wire) ->  ~0.001 MiB

The isolation it bought only ever needed to contain TOP-LEVEL SCALAR writes. The full
mutation surface on this path is two assignments:

  combo.ts     bodyRecord.max_tokens = ...   (reasoning buffer)
  chatCore.ts  body.model = model            (Background Task Redirection T41)

Nothing mutates the nested payload; applyCompression and injectUniversalHandoffBody both
return new objects (verified empirically -- neither touches its input, and both tolerate a
frozen one). So a fresh top-level object per target gives identical isolation while sharing
the expensive messages/tools arrays.

Also fixes a REAL cross-target leak in handleRoundRobinCombo. It already used a shallow
copy, but took it only when the reasoning buffer actually changed max_tokens -- every other
attempt shared the caller's object outright. The new test reproduces it on the unmodified
code: target 2 received model "mutated-by-openai/gpt-4o-mini". In production that is a
Background Task Redirection on one round-robin target rewriting body.model for the next.
The copy is now unconditional.

The invariant is pinned by tests rather than by a comment listing mutation sites, so the
clone strategy can change again without anyone re-deriving them by hand:
 - a target's in-place write must not leak into the next (priority / fill-first /
   round-robin; the stub reproduces chatCore's body.model write)
 - the caller's body is never mutated
 - the per-target copy stays shallow (targets share one messages array)
 - freeze probe: combo's own body handling performs no in-place writes

* test(sse): register the combo attempt-body isolation test in stryker tap.testFiles

The new test resets the circuit breaker in beforeEach, so it counts as a covering test
for src/shared/utils/circuitBreaker.ts. Without registering it,
check:mutation-test-coverage --strict reported a 4th drift entry that was not there on the
pristine tip -- new drift introduced by this PR. Registered in sorted position; the gate is
back to the 3 pre-existing entries (accountFallback.ts, error.ts, comboPredicates.ts) that
#8538 addresses.
2026-07-26 03:52:35 -03:00

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{
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"_comment": [
"Mutation testing for the ~8 critical modules (Task 11 — Fase 7).",
"NIGHTLY ONLY — DO NOT run on every PR. Mutation testing is expensive:",
" - Each mutant requires a full test suite execution.",
" - The 8 modules produce ~200–500 mutants; est. 30–90 min per run.",
" - Wired to the nightly CI workflow (.github/workflows/nightly-mutation.yml),",
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"",
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" only includes a small set of .test.tsx + open-sse/**/__tests__ files, so",
" the vitest-runner would find ZERO covering tests for these modules. The",
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"",
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"tests/unit/8200-perplexity-web-401-cooldown.test.ts",
"tests/unit/8247-accountfallback-model-unhealthy.test.ts",
"tests/unit/8248-accountfallback-nvidia-degraded.test.ts",
"tests/unit/8332-combo-vision-fallback.test.ts",
"tests/unit/8376-econnrefused-breaker.test.ts",
"tests/unit/8396-cooldown-429-cap.test.ts",
"tests/unit/account-fallback-anthropic-quota.test.ts",
"tests/unit/account-fallback-lockout-eviction.test.ts",
"tests/unit/account-fallback-retry-after-json.test.ts",
"tests/unit/account-fallback-route-restriction-403.test.ts",
"tests/unit/account-fallback-service.test.ts",
"tests/unit/accountfallback-ratelimit-400-4976.test.ts",
"tests/unit/adobe-firefly.test.ts",
"tests/unit/anthropic-thinking-signature-recovery.test.ts",
"tests/unit/antigravity-429-quota-tdd.test.ts",
"tests/unit/api-key-rotator-health.test.ts",
"tests/unit/appearance-widget-settings-schema.test.ts",
"tests/unit/auth-antigravity-account-retry-v2.test.ts",
"tests/unit/auth-clear-account-error.test.ts",
"tests/unit/auth-disable-cooling-2997.test.ts",
"tests/unit/auth-extract-api-key.test.ts",
"tests/unit/auth-noauth-fallback-loop-3061.test.ts",
"tests/unit/auth-ollama-cloud-per-model-403-3027.test.ts",
"tests/unit/auth-opencode-zen-noauth-fallback.test.ts",
"tests/unit/auth-terminal-status.test.ts",
"tests/unit/authz/discovery-routes-local-only.test.ts",
"tests/unit/authz/route-guard-local-prefix.test.ts",
"tests/unit/authz/route-guard-skills-collect.test.ts",
"tests/unit/authz/route-guard-version-get-exemption.test.ts",
"tests/unit/authz/route-guard-vnc-session-local-only.test.ts",
"tests/unit/authz/routeGuard.test.ts",
"tests/unit/auto-combo-context-advertising.test.ts",
"tests/unit/auto-combo-engine.test.ts",
"tests/unit/auto-combo-scoring-clamp.test.ts",
"tests/unit/bug-7940-gemini-retrydelay.test.ts",
"tests/unit/build/check-circular-deps.test.ts",
"tests/unit/cache-sweeps.test.ts",
"tests/unit/cc-bridge-openai-image-7777.test.ts",
"tests/unit/cc-compatible-provider.test.ts",
"tests/unit/chat-combo-live-test.test.ts",
"tests/unit/chat-context-relay.test.ts",
"tests/unit/chat-cooldown-aware-retry.test.ts",
"tests/unit/chat-helpers.test.ts",
"tests/unit/chat-route-coverage.test.ts",
"tests/unit/chat-route-edge-cases.test.ts",
"tests/unit/chatcore-compression-integration.test.ts",
"tests/unit/chatcore-executor-helpers.test.ts",
"tests/unit/chatcore-executor-proxy.test.ts",
"tests/unit/chatcore-extracted-modules-3821.test.ts",
"tests/unit/chatcore-headers.test.ts",
"tests/unit/chatcore-imports-cleanly.test.ts",
"tests/unit/chatcore-log-truncation.test.ts",
"tests/unit/chatcore-memory-extraction.test.ts",
"tests/unit/chatcore-memory-skills-injection.test.ts",
"tests/unit/chatcore-non-streaming-sse.test.ts",
"tests/unit/chatcore-passthrough-tool-names.test.ts",
"tests/unit/chatcore-request-format.test.ts",
"tests/unit/chatcore-sanitization.test.ts",
"tests/unit/chatcore-semantic-cache-store.test.ts",
"tests/unit/chatcore-semantic-cache.test.ts",
"tests/unit/chatcore-strip-stale-headers.test.ts",
"tests/unit/chatcore-telemetry-helpers.test.ts",
"tests/unit/chatcore-translation-paths.test.ts",
"tests/unit/chatcore-upstream-timeouts.test.ts",
"tests/unit/check-error-helper.test.ts",
"tests/unit/check-route-guard-membership.test.ts",
"tests/unit/check-test-discovery.test.ts",
"tests/unit/circuit-breaker-abort-provider-trip-7907.test.ts",
"tests/unit/circuit-breaker-client-abort.test.ts",
"tests/unit/circuit-breaker-failure-kind.test.ts",
"tests/unit/circuit-breaker-registry-cap.test.ts",
"tests/unit/circuit-breaker-stream-controller-4602.test.ts",
"tests/unit/claude-code-parity.test.ts",
"tests/unit/claude-effort-suffix-strip.test.ts",
"tests/unit/claude-oauth-provider.test.ts",
"tests/unit/claude-passthrough-stream-boolean.test.ts",
"tests/unit/claude-passthrough-thinking-2454.test.ts",
"tests/unit/cli-simulate.test.ts",
"tests/unit/cline-response-envelope.test.ts",
"tests/unit/clinepass-provider.test.ts",
"tests/unit/cliproxyapi-dedicated-credential-7645.test.ts",
"tests/unit/cliproxyapi-model-mapping-dispatch.test.ts",
"tests/unit/cliproxyapi-model-mapping-dispatch.test.ts",
"tests/unit/cliproxyapi-model-mapping-dispatch.test.ts",
"tests/unit/codex-failover.test.ts",
"tests/unit/codex-quota-selection-hydration.test.ts",
"tests/unit/codex-session-affinity-reset-aware-5903.test.ts",
"tests/unit/codex-stream-false.test.ts",
"tests/unit/collect-metrics-module-coverage.test.ts",
"tests/unit/combo-499-abort.test.ts",
"tests/unit/combo-account-allowlist-3266.test.ts",
"tests/unit/combo-attempt-body-isolation-7847.test.ts",
"tests/unit/combo-auto-candidate-expansion.test.ts",
"tests/unit/combo-breaker-429.test.ts",
"tests/unit/combo-cache-invalidation.test.ts",
"tests/unit/combo-config.test.ts",
"tests/unit/combo-context-relay.test.ts",
"tests/unit/combo-diagnostics-trace.test.ts",
"tests/unit/combo-headroom-strategy.test.ts",
"tests/unit/combo-health-dashboard.test.ts",
"tests/unit/combo-health-route.test.ts",
"tests/unit/combo-hedging.test.ts",
"tests/unit/combo-least-used-account.test.ts",
"tests/unit/combo-lockout-quota-reset-6863.test.ts",
"tests/unit/combo-max-depth-config.test.ts",
"tests/unit/combo-model-lockout-honors-reset-1308.test.ts",
"tests/unit/combo-omnimodel-tag-stripping.test.ts",
"tests/unit/combo-param-validation-fallback-4519.test.ts",
"tests/unit/combo-prescreen.test.ts",
"tests/unit/combo-priority-quota-exhaustion-cutoff-5923.test.ts",
"tests/unit/combo-provider-cooldown-sibling.test.ts",
"tests/unit/combo-provider-cooldown.test.ts",
"tests/unit/combo-provider-diversity-wiring.test.ts",
"tests/unit/combo-quality-validator-reasoning.test.ts",
"tests/unit/combo-quota-share-cooldown-wait.test.ts",
"tests/unit/combo-quota-soft-penalty.test.ts",
"tests/unit/combo-round-robin-streaming-lock-3811.test.ts",
"tests/unit/combo-roundrobin-compat-fallback-6238.test.ts",
"tests/unit/combo-routing-engine.test.ts",
"tests/unit/combo-rr-fallback-advance-948.test.ts",
"tests/unit/combo-rr-sticky-9router.test.ts",
"tests/unit/combo-scoring-inspector.test.ts",
"tests/unit/combo-selected-connection-success.test.ts",
"tests/unit/combo-sessionless-pin-3825.test.ts",
"tests/unit/combo-skip-conn-disable-plugin-block-7806.test.ts",
"tests/unit/combo-speed-telemetry-6875.test.ts",
"tests/unit/combo-strategies.test.ts",
"tests/unit/combo-strategy-fallbacks.test.ts",
"tests/unit/combo-stream-readiness-fallback.test.ts",
"tests/unit/combo-streaming-empty-content-failover.test.ts",
"tests/unit/combo-strict-random-distribution-3959.test.ts",
"tests/unit/combo-target-defensive-modelstr.test.ts",
"tests/unit/combo/auto-quota-cutoff.test.ts",
"tests/unit/combo/auto-status-penalty-4540.test.ts",
"tests/unit/combo/combo-exhausted-skip.test.ts",
"tests/unit/combo/effective-max-concurrency.test.ts",
"tests/unit/combo/recovery-hint.test.ts",
"tests/unit/complexity-aware-scoring-wiring.test.ts",
"tests/unit/context-pinning-tool-calls.test.ts",
"tests/unit/cooldown-epoch-string-3954.test.ts",
"tests/unit/correctness/combo.property.test.ts",
"tests/unit/correctness/sanitizers.property.test.ts",
"tests/unit/custom-model-target-format.test.ts",
"tests/unit/db-reset-module-state.test.ts",
"tests/unit/ddg-circuit-breaker-null-content-6999-7000.test.ts",
"tests/unit/domain-persistence.test.ts",
"tests/unit/edgetts-provider.test.ts",
"tests/unit/embeddings-auth.test.ts",
"tests/unit/error-classification.test.ts",
"tests/unit/error-message-sanitization.test.ts",
"tests/unit/error-sensitive-redaction.test.ts",
"tests/unit/executor-antigravity.test.ts",
"tests/unit/executor-web-cookie-sweep.test.ts",
"tests/unit/format-provider-error-cause.test.ts",
"tests/unit/gemini-web-missing-browser-3516.test.ts",
"tests/unit/grok-cli-oauth.test.ts",
"tests/unit/guardrails-api-3496.test.ts",
"tests/unit/headroom-codex-quota-snapshot-6379.test.ts",
"tests/unit/headroom-proxy-lifecycle.test.ts",
"tests/unit/idempotency-fusion-collision.test.ts",
"tests/unit/issue-6343-v0-web-alias-collision.test.ts",
"tests/unit/issue-6638-ollama-quota.test.ts",
"tests/unit/issue-6686-quota-preflight-coverage.test.ts",
"tests/unit/issue-7071-ollama-session-quota.test.ts",
"tests/unit/livews-forward-backoff-4604.test.ts",
"tests/unit/management-auth-hardening.test.ts",
"tests/unit/mark-account-unavailable-numeric-epoch-guard.test.ts",
"tests/unit/masked-200-exhaustion-fallback-6427.test.ts",
"tests/unit/mcp-connect-scope.test.ts",
"tests/unit/memory-embedding-remote.test.ts",
"tests/unit/memory-embedding-transformers.test.ts",
"tests/unit/microsoft-designer-web-6672.test.ts",
"tests/unit/middleware-header-strip-5849.test.ts",
"tests/unit/middleware-hooks-error-sanitization.test.ts",
"tests/unit/model-cooldowns-route-auth.test.ts",
"tests/unit/model-cooldowns-route.test.ts",
"tests/unit/model-lockout-decay.test.ts",
"tests/unit/model-lockout-exact-cooldown-cap.test.ts",
"tests/unit/model-lockout-max-cooldown.test.ts",
"tests/unit/no-memory-header.test.ts",
"tests/unit/non-streaming-sse-terminal-typescan-4459.test.ts",
"tests/unit/nvidia-passthrough-models-6773.test.ts",
"tests/unit/nvidia-quota-phase1.test.ts",
"tests/unit/oauth-providers-config.test.ts",
"tests/unit/oauth-redirect-uri-mismatch.test.ts",
"tests/unit/observability-fase04.test.ts",
"tests/unit/observability-payloads.test.ts",
"tests/unit/ollama-cloud-weekly-quota-cooldown-3709.test.ts",
"tests/unit/openapi-security-tiers.test.ts",
"tests/unit/openrouter-quota-6842.test.ts",
"tests/unit/persist-429-cooldown-account-fallback.test.ts",
"tests/unit/plan3-p0.test.ts",
"tests/unit/plugin-sandbox-permissions.test.ts",
"tests/unit/plugins-route-error-sanitization.test.ts",
"tests/unit/provider-error-rules.test.ts",
"tests/unit/provider-health-matrix.test.ts",
"tests/unit/provider-request-failure-pipeline.test.ts",
"tests/unit/public-client-ids-3493.test.ts",
"tests/unit/publicCreds.test.ts",
"tests/unit/qoder-oauth-config.test.ts",
"tests/unit/quota-groups-route.test.ts",
"tests/unit/quota-key-models-route.test.ts",
"tests/unit/quota-policy-generalization.test.ts",
"tests/unit/quota-pool-log-route.test.ts",
"tests/unit/quota-streaming-consumption-usd.test.ts",
"tests/unit/qwen-web-content-array-serialization.test.ts",
"tests/unit/rate-limit-enhanced.test.ts",
"tests/unit/rate-limit-manager.test.ts",
"tests/unit/rate-limit-queue-timeout-lockout.test.ts",
"tests/unit/repro-7503-no-choices.test.ts",
"tests/unit/repro-antigravity-404-family-cooldown-hijack.test.ts",
"tests/unit/responses-handler.test.ts",
"tests/unit/rotation-config-omniroute.test.ts",
"tests/unit/route-explainability.test.ts",
"tests/unit/route-guard-acp-agents-local-only.test.ts",
"tests/unit/route-guard-forge-jcode-settings-local-only.test.ts",
"tests/unit/route-guard-grok-build-settings-local-only.test.ts",
"tests/unit/route-guard-middleware-local-only.test.ts",
"tests/unit/route-guard-plugins-local-only.test.ts",
"tests/unit/route-guard-private-lan.test.ts",
"tests/unit/route-guard-provider-login-local-only.test.ts",
"tests/unit/route-guard-qwen-settings-local-only.test.ts",
"tests/unit/router-strategies.test.ts",
"tests/unit/rule12-error-sanitization-sweep.test.ts",
"tests/unit/serial/combo-health-autopilot.test.ts",
"tests/unit/serial/combo-quota-share-cooldown-wait-timing.test.ts",
"tests/unit/serial/combo-strategy-fallbacks-half-open-timing.test.ts",
"tests/unit/serial/provider-health-autopilot.test.ts",
"tests/unit/service-combo-metrics.test.ts",
"tests/unit/service-provider-plugin-registry.test.ts",
"tests/unit/services-branch-hardening.test.ts",
"tests/unit/services/bifrost-route-guard.test.ts",
"tests/unit/services/combo-metrics-memory.test.ts",
"tests/unit/session-affinity-generic-7274.test.ts",
"tests/unit/settings/authz-bypass.test.ts",
"tests/unit/skip-provider-breaker-consumer-2743.test.ts",
"tests/unit/sse-auth-antigravity-credits.test.ts",
"tests/unit/sse-auth.test.ts",
"tests/unit/strict-random-deck.test.ts",
"tests/unit/strip-reasoning-header.test.ts",
"tests/unit/system-role-extraction.test.ts",
"tests/unit/t23-t24-fallback-resilience.test.ts",
"tests/unit/tag-routing.test.ts",
"tests/unit/thundering-herd.test.ts",
"tests/unit/token-refresh-race-comprehensive.test.ts",
"tests/unit/token-refresh-service.test.ts",
"tests/unit/tools-filter-anthropic-format.test.ts",
"tests/unit/tproxy-route.test.ts",
"tests/unit/trae-publiccred.test.ts",
"tests/unit/types-barrel-model-cooldown.test.ts",
"tests/unit/upstream-retry-hints-toggle.test.ts",
"tests/unit/upstream-timeout-model-override.test.ts",
"tests/unit/usage-service-hardening.test.ts",
"tests/unit/validate-response-quality.test.ts"
],
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"--import",
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"_mutate_godfiles_excluded_comment": [
"2026-06-18 (Onda 2 budget): chatCore.ts + combo.ts — the two god-files — were REMOVED",
"from `mutate`. They dominated ~2/3 of the ~15k mutants; the full 8-module run TIMED OUT",
"at the 180min nightly cap (run 27705123780: 16:47:33 -> killed 19:47:48 = exactly 180min;",
"the prior 120min scheduled run also timed out). #4078 made concurrency safe but the",
"tap-runner re-spawns a node process per test file PER MUTANT, so spawn cost dominates and",
"15k mutants does not fit.",
"",
"2026-06-18 (Onda 3 / Fase 9 T5 re-add): the combo.ts god-file was split into 11 small",
"leaf modules under open-sse/services/combo/ (PRs #4162/#4175/#4186/#4196/#4204). The",
"routing LOGIC that justified combo.ts being in `mutate` now lives in those leaves, so the",
"10 well-covered combo/* leaves are ADDED back to `mutate` here (comboStructure/autoStrategy/",
"validateQuality/shadowRouting/targetSorters/comboPredicates/rrState/comboData + the reset-aware",
"quota pair quotaScoring/quotaStrategies, added after #4204 (D7b) merged). They are covered by",
"the 24 combo-*.test.ts files already in tap.testFiles (quota by combo-prescreen/combo-config/",
"combo-strategy-fallbacks). types.ts is omitted (pure type declarations produce 0 mutants).",
"",
"chatCore/* leaves: a covering-test audit found 6 with direct unit coverage (batch g:",
"comboContextCache/idempotency/passthroughHelpers/responseHeaders/sanitization/upstreamTimeouts).",
"A follow-up then added DEDICATED unit tests for 6 more leaves (tests/unit/chatcore-headers,",
"-log-truncation, -memory-extraction, -non-streaming-sse, -passthrough-tool-names,",
"-executor-helpers — wired into tap.testFiles above) and added those leaves as batch h",
"(headers/logTruncation/memoryExtraction/nonStreamingSse/passthroughToolNames/executorHelpers).",
"A later follow-up added dedicated tests (NO mock.module — unavailable under the tap-runner; used",
"fetch-override + crafted inputs + temp-DATA_DIR) for telemetryHelpers (both fns, all branches) and",
"memorySkillsInjection (getSkillsProviderForFormat fully + injectMemoryAndSkills guards/empty-DB",
"path) and added them as batch i.",
"",
"The FINAL chatCore leaf, semanticCache.ts, was added to batch i once its cache-HIT block had a",
"fixture: chatcore-semantic-cache now SEEDS the real cache via setCachedResponse (the in-memory",
"store getCachedResponse checks first — no mock.module needed) under the exact signature",
"checkSemanticCache rebuilds, so the HIT branch runs end-to-end (status 200 / 'semantic' / 'HIT' /",
"the stream + content-type ternaries / the cost fallback / the side-effect calls all get killed).",
"ALL 15 chatCore leaves are now mutated.",
"",
"STILL EXCLUDED (follow-ups, NOT in `mutate` yet):",
" - combo.ts + chatCore.ts barrels: their handleComboChat/handleChatCore CORES were not",
" split (out of scope — Fase 3 ChatCoreContext refactor). The barrels are now thin-ish",
" but still large; keep excluded until the cores are split.",
"See project memory: Quality Gate v2 / Fase 9 (project-combo-split)."
],
"mutate": [
"open-sse/services/accountFallback.ts",
"src/sse/services/auth.ts",
"src/server/authz/routeGuard.ts",
"open-sse/utils/error.ts",
"open-sse/utils/publicCreds.ts",
"src/shared/utils/circuitBreaker.ts",
"open-sse/services/combo/comboStructure.ts",
"open-sse/services/combo/autoStrategy.ts",
"open-sse/services/combo/validateQuality.ts",
"open-sse/services/combo/shadowRouting.ts",
"open-sse/services/combo/targetSorters.ts",
"open-sse/services/combo/comboPredicates.ts",
"open-sse/services/combo/rrState.ts",
"open-sse/services/combo/comboData.ts",
"open-sse/services/combo/quotaScoring.ts",
"open-sse/services/combo/quotaStrategies.ts",
"open-sse/handlers/chatCore/comboContextCache.ts",
"open-sse/handlers/chatCore/idempotency.ts",
"open-sse/handlers/chatCore/passthroughHelpers.ts",
"open-sse/handlers/chatCore/responseHeaders.ts",
"open-sse/handlers/chatCore/sanitization.ts",
"open-sse/handlers/chatCore/upstreamTimeouts.ts",
"open-sse/handlers/chatCore/headers.ts",
"open-sse/handlers/chatCore/logTruncation.ts",
"open-sse/handlers/chatCore/memoryExtraction.ts",
"open-sse/handlers/chatCore/nonStreamingSse.ts",
"open-sse/handlers/chatCore/passthroughToolNames.ts",
"open-sse/handlers/chatCore/executorHelpers.ts",
"open-sse/handlers/chatCore/telemetryHelpers.ts",
"open-sse/handlers/chatCore/memorySkillsInjection.ts",
"open-sse/handlers/chatCore/semanticCache.ts"
],
"_ignorePatterns_comment": [
"ignorePatterns = files NOT copied into the Stryker sandbox. It does NOT scope",
"what gets mutated (that is the `mutate` array above). The test files MUST be",
"copied so the tap-runner can find covering tests, so DO NOT ignore tests/ here.",
"We only exclude heavy, mutation-irrelevant trees to keep sandbox creation fast:",
"build output, coverage, the huge docs/i18n translation tree, and other worktrees."
],
"ignorePatterns": [
".next",
"dist",
"dist-electron",
".build",
"coverage",
"playwright-report",
"test-results",
"reports",
"docs/i18n",
".worktrees",
".stryker-tmp"
],
"reporters": ["progress", "html", "json"],
"htmlReporter": {
"fileName": "reports/mutation/mutation.html"
},
"jsonReporter": {
"fileName": "reports/mutation/mutation.json"
},
"coverageAnalysis": "perTest",
"timeoutMS": 60000,
"timeoutFactor": 2.5,
"concurrency": 4,
"disableTypeChecks": true,
"checkers": [],
"thresholds": {
"high": 70,
"low": 50,
"break": null
},
"tempDirName": ".stryker-tmp",
"cleanTempDir": true,
"_tapTestFiles_comment": [
"tap.testFiles is the explicit set of node:test files that cover the 8 mutated",
"modules (union of files importing any of them), MINUS a few timing/heap/streaming-",
"sensitive integration tests that can flake under Stryker concurrent runners and",
"would break the required all-green baseline dry-run (e.g. body-timeout-integration,",
"heap-pressure, sse-heartbeat-integration, *-stream-readiness, chatcore-memory-pressure).",
"It is enumerated (not a broad glob) so the Stryker dry-run stays tractable for the",
"nightly budget — a glob over the full ~1300-file unit suite would make the per-test",
"dry-run take hours. coverageAnalysis:perTest then narrows which files run per mutant.",
"Regenerate the base union after adding/renaming covering tests, then re-prune flaky ones:",
" grep -rlE \"circuitBreaker|publicCreds|accountFallback|routeGuard|services/auth|chatCore|services/combo|utils/error|public-client|account-fallback|route-guard|circuit-breaker\" tests/unit --include=\"*.test.ts\" | sort -u"
],
"dryRunTimeoutMinutes": 30,
"_concurrency_comment": "concurrency=4 (was 1): the covering node:test files used to share SQLite/module state via the default DATA_DIR (~/.omniroute), so running them concurrently in the Stryker sandbox caused cross-file races that failed the all-green baseline. tap.nodeArgs now imports ./tests/_setup/isolateDataDir.ts, which gives each spawned test process its own temp DATA_DIR — eliminating the shared on-disk DB, so concurrency>1 is deterministic. A/B verified 2026-06-17: dry-run at concurrency=4 fails WITHOUT the isolation import (account-fallback-service tap exit 9) and passes WITH it. Raise further only if the runner has spare cores."
}
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