check drift healing updates anchor hashes but leaves stale line spans #286

Observed

With Spectackle0.10.0, a pinned reindex followed by check healed the content hashes of four anchors but retained their old line ranges in .spectackle/anchors.tsv. An explicit rule op=edit with the unchanged applies IDs subsequently refreshed the ranges correctly.

Concrete examples in GoAI:

• go:autograd_test.TestSigmoidFocalCoreExactCompositeVJPParity: old57-94, current70-110. Check reports hash 7b18e9f3 -> faa74e87 but retains57-94.
• go:autograd_test.TestWKVOpMatchesHostWKV: old36-52, current37-70. Check reports 8d9aca7b -> ca857934 but retains36-52.

Reproduction/evidence

Source checkpoint: c3b4d1f1, with changed tests and pre-change policy anchors. Run pinned Go1.27.1, spectackle reindex -root ., then spectackle call check '{"path":"autograd","budget":16000,"fix":false}'.

Captured check output shows four healed anchors at old ranges. Reindex had6715 typed call edges and zero skipped packages; this was not a syntactic-only fallback.

Calling rule with {"op":"edit","id":"ARM64-SIMD-FOCAL-COMPOSITE-001","applies":["go:autograd_test.TestSigmoidFocalCoreExactCompositeVJPParity"]} updates the range to70-110. Equivalent edits refresh WKV/guard anchors. Final anchor refresh preserves the resulting correct ranges.

Expected / impact

When healing an anchor to the current symbol content, refresh its path/span from the same current graph node, or document explicitly that these locations remain historical. Otherwise a current content hash is paired with stale navigation/review locations.

No Spectackle implementation cause has been established and no fix PR is proposed. Reported per the SDD workflow's tool-defect policy.