chore(mythos): register dwarf.rs as Tier-5 (#207)

`meld-core/src/dwarf.rs` (the DWARF AddressRemap engine + the
`DwarfHandling::Remap` rewrite, #143) is correctness-critical: a wrong
remapped code address silently de-grounds downstream coverage and
breakpoints (LS-D-1). Add it to the Mythos auto-scan Tier-5 file list so
future diffs get the clean-room AI delta pass.

Standalone workflow-only change: the claude-code-action identity check
requires the workflow file be byte-identical to main, so this cannot be
bundled with the inc 3b code PR (#206).

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: avrabe

.github/workflows/mythos-auto.yml

@@ -113,6 +113,7 @@ jobs:
             "meld-core/src/p3_async.rs"
             "meld-core/src/p3_stream.rs"
             "meld-core/src/provenance.rs"
+            "meld-core/src/dwarf.rs"
             "meld-core/src/adapter/"
             "meld-core/src/resource_graph.rs"
             "meld-core/src/segments.rs"