Integration: Review Assignment via Git Diff + CSV Owners (JGit)

Integration — reviewer assignment via Git diff + CSV owners (JGit) Implement a "review-assignment" tool: given two branches in the same Git repository, compute the list of changed files between them; then, using a CSV mapping of file -> owner, find the owner who owns the largest number of changed files and return that owner. Inputs Local Git repository path repoPath Two branch names branchA and branchB A CSV file owners.csv describing file ownership (exact format provided in the interview) Output Return (or print) the owner identifier (username/email) who owns the most changed files between branchA and branchB. If there is a tie: follow the rule specified in the interview; if not specified, define one (e.g., lexicographically smallest). Required functionality Use JGit to compute diffs between the two branches and collect changed file paths (added/modified/deleted). Parse the CSV to build a mapping from file path (or pattern) to owner. Map changed file paths to owners and count per-owner totals. Output the owner with the maximum count. Edge cases Changed files missing from the CSV. Files matching multiple owners. Case sensitivity differences in paths. Large repos: avoid inefficient full traversals. Example (abstract) Changed files: ["src/A.java", "src/B.java", "README.md"] owners.csv: src/A.java -> alice, src/B.java -> bob, README.md -> alice Output: alice