[Hylfrd]

Summary

• Add a pure feature/jacob evidence parser for cleaned Jacob contest text.
• Carry explicit contest identity, crop, count, and sequence in immutable evidence.
• Evaluate immutable crop thresholds with the fixed upstream inclusive count >= threshold rule.
• Keep lower counts and older sequences stale, reset high-water state across contest identities, and fail closed for unknown, malformed, conflicting, or unavailable threshold evidence.
• Add stable immutable snapshots and focused tests only; no client wiring, shared config, UI, chat/scoreboard capture, telemetry, or remote control.

Fixed upstream anchors

• eacb323fbde3eff94d4f2ee7baacb059d84b8e3a, com.jelly.farmhelperv2.handler.GameStateHandler#checkJacob(String): jacob's contest identifies the contest; jacobsRemainingTimePattern plus convertCrop identifies the crop; Collected and recognized medal with lines supply the count.
• The same method's count extraction anchor is lastIndexOf(" ") followed by comma removal.
• com.jelly.farmhelperv2.failsafe.impl.JacobFailsafe#onTickDetection(ClientTickEvent): crop-specific caps are selected and the detection boundary is inclusive at getJacobsContestCropNumber() >= cropThreshold.
• The package separates that server-specific text observation from the pure threshold decision.

Verification

• Focused: ./gradlew.bat test --tests dev.hylfrd.farmhelper.feature.jacob.JacobThresholdDetectorTest --no-daemon --console=plain (11 tests passed).
• Full: ./gradlew.bat test --no-daemon --console=plain (passed).
• Build: ./gradlew.bat build --no-daemon --console=plain (passed; dependency provenance verified and access widener had no source).

Composition risks

• A caller must provide a stable contest identity and globally monotonic sequence; this package does not infer identity from mutable server state.
• A composition layer must supply crop thresholds; missing thresholds remain unknown and cannot trigger.
• The parser accepts already-cleaned lines, leaving client-side capture and formatting normalization outside this package.