docs(curation): correct FuzzyAnchor docstring (add get_context helper, replace 'anchor_lines' with actual field names)

docs/guide_context_curation.md

@@ -83,13 +83,24 @@ Text slices defined by line numbers become invalid when files are modified (line
 ```python
 # src/fuzzy_anchor.py
 class FuzzyAnchor:
+    @staticmethod
+    def get_context(lines: list[str], index: int, count: int, direction: int) -> list[str]:
+        """Helper: extract up to `count` non-empty lines starting at `index` and walking
+        in `direction` (1 = forward, -1 = backward). Used to build the start/end anchors
+        for fuzzy re-resolution."""
+
     @classmethod
     def create_slice(cls, text: str, start_line: int, end_line: int) -> dict:
-        """Returns slice_data with content_hash, anchor_lines, and positions."""
+        """Returns slice_data with start_line, end_line, content_hash, start_context,
+        and end_context fields. start_line/end_line are 1-based; the hash is MD5
+        of the region's text."""
 
     @classmethod
     def resolve_slice(cls, text: str, slice_data: dict) -> Optional[Tuple[int, int]]:
-        """Resolves slice position in modified text, returns (start, end) or None."""
+        """Resolves slice position in modified text. Returns (start, end) on success
+        or None if the slice can no longer be located. Strategy: (1) try exact
+        match by content hash at the original line range; (2) fall back to fuzzy
+        match by walking the start_context and end_context anchors."""
 ```
 
 ### Slice Data Structure