Function trackFileDeletion

src/utils/commitAttribution.ts:394–421

(
  state: AttributionState,
  filePath: string,
  oldContent: string,
)

 * Used when NCode deletes a file through a non-tracked mechanism.
 */
export function trackFileDeletion(
  state: AttributionState,
  filePath: string,
  oldContent: string,
): AttributionState {
  const normalizedPath = normalizeFilePath(filePath)
  const existingState = state.fileStates.get(normalizedPath)
  const existingContribution = existingState?.assistantContribution ?? 0
  const deletedChars = oldContent.length

  const newFileState: FileAttributionState = {
    contentHash: '', // Empty hash for deleted files
    assistantContribution: existingContribution + deletedChars,
    mtime: Date.now(),
  }

  const newFileStates = new Map(state.fileStates)
  newFileStates.set(normalizedPath, newFileState)

  logForDebugging(
    `Attribution: Tracked deletion of ${normalizedPath} (${deletedChars} chars removed, total contribution: ${newFileState.assistantContribution})`,
  )

  return {
    ...state,
    fileStates: newFileStates,
  }
}

// --