TemporalCouplingAnalyzer

Derives temporal (change) coupling from a window of recent commits.

Where com.aalekh.aalekh.analysis.graph.GraphAnalyzer reasons about the declared structure, this analyzer reasons about how the code actually evolves: which modules keep changing together. It surfaces three signals a static graph cannot:

• Hotspots - the modules that churn the most (TemporalCouplingReport.churn).

• Hidden coupling - pairs that co-change strongly but declare no dependency.

• Dead structure - declared edges whose endpoints both changed yet never co-changed.

The analysis is a pure function of (graph, commits): deterministic, no I/O, no wall-clock.