refactor(hashline-edit): remove unnecessary barrel re-exports of internal primitives

applySetLine, applyReplaceLines, applyInsertAfter, applyInsertBefore
were re-exported from both edit-operations.ts and index.ts but have no
external consumers — they are only used internally within the module.
Only applyHashlineEdits (the public API) remains exported.

src/tools/hashline-edit/index.ts

@@ -16,9 +16,5 @@ export type {
 export { NIBBLE_STR, HASHLINE_DICT, HASHLINE_REF_PATTERN, HASHLINE_OUTPUT_PATTERN } from "./constants"
 export {
   applyHashlineEdits,
-  applyInsertAfter,
-  applyInsertBefore,
-  applyReplaceLines,
-  applySetLine,
 } from "./edit-operations"
 export { createHashlineEditTool } from "./tools"