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/edit-operations.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from "bun:test"
-import { applyHashlineEdits, applyInsertAfter, applyReplaceLines, applySetLine } from "./edit-operations"
+import { applyHashlineEdits } from "./edit-operations"
-import { applyAppend, applyPrepend } from "./edit-operation-primitives"
+import { applyAppend, applyInsertAfter, applyPrepend, applyReplaceLines, applySetLine } from "./edit-operation-primitives"
 import { computeLineHash } from "./hash-computation"
 import type { HashlineEdit } from "./types"
 

src/tools/hashline-edit/edit-operations.ts

@@ -88,9 +88,3 @@ export function applyHashlineEdits(content: string, edits: HashlineEdit[]): stri
   return applyHashlineEditsWithReport(content, edits).content
 }
 
-export {
-  applySetLine,
-  applyReplaceLines,
-  applyInsertAfter,
-  applyInsertBefore,
-} from "./edit-operation-primitives"

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"