feat(hashline-edit): add anchor insert modes and strict insert validation

src/tools/hashline-edit/index.ts

@@ -1,11 +1,19 @@
-export { computeLineHash, formatHashLine, formatHashLines } from "./hash-computation"
+export {
+  computeLineHash,
+  formatHashLine,
+  formatHashLines,
+  streamHashLinesFromLines,
+  streamHashLinesFromUtf8,
+} from "./hash-computation"
 export { parseLineRef, validateLineRef } from "./validation"
 export type { LineRef } from "./validation"
-export type { SetLine, ReplaceLines, InsertAfter, Replace, HashlineEdit } from "./types"
+export type { SetLine, ReplaceLines, InsertAfter, InsertBefore, InsertBetween, Replace, HashlineEdit } from "./types"
 export { NIBBLE_STR, HASHLINE_DICT, HASHLINE_REF_PATTERN, HASHLINE_OUTPUT_PATTERN } from "./constants"
 export {
   applyHashlineEdits,
   applyInsertAfter,
+  applyInsertBefore,
+  applyInsertBetween,
   applyReplace,
   applyReplaceLines,
   applySetLine,