Oliver Kieselbach ab61839685 feat(backend): P6 split - CMTrace skew tripwire + customer clock_skew rule ...

Operator side: CmTraceSkewTripwire piggybacks on the terminal counter
reconcile's partition scan (zero extra reads) and compares median
ReceivedAt-OccurredUtc deltas of IME-derived vs other events. A clean
15-min-grid divergence (residual < 2 min, >=20 samples / >=3 distinct
batches per side) emits the CmTraceTimeSkewRegression ops event
(Agent/Warning, goal: never fires). Bias-dominated sessions are
suppressed; measuredWriterOffsetMinutes is never consulted (sticky
after era flip-backs). Kill switch: CmTraceSkewTripwireDisabled.

Customer side: new clock_skew analyze condition source (skewMetric
clock_jump | sustained_offset, threshold seconds, gt/gte magnitude)
behind built-in ANALYZE-DEV-008 (300 s = the Kerberos/Entra 5-min skew
boundary). Batch-median frames with spool-spread filter, plateau step
detection (a gradual backlog-drain ramp cannot fake a jump) and
end-state persistence; IME-derived events are excluded so a CMTrace
anchoring regression can never fire the customer rule. Evidence carries
field=skewSummary/value for {{skewSummary}} interpolation.

Full mirroring chain: schema enum + skewMetric property, shared
manifest + combine.js regeneration, MCP authoring guide + semantic
lint, web SOURCES/form/card, ops-event dual-register, docs. P5 is
subsumed by the tripwire. PercentileMath is now the single nearest-rank
implementation (Apps/PlatformMetrics delegate).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-08-20 22:30:10 +02:00

..

analyze-rule.schema.json

feat(backend): P6 split - CMTrace skew tripwire + customer clock_skew rule

2026-08-20 22:30:10 +02:00

gather-rule.schema.json

gather-rules: mirror hard blocks in portal/MCP, stamp author on PUT-upsert; agent: bootstrap retry tests

2026-08-11 12:29:05 +02:00

ime-log-pattern.schema.json

IME tracker: tail AppActionProcessor.log; GRS + token-failure signals

2026-08-18 01:01:02 +02:00