chore(adr): rename ADR-0081 frontier provider adapters → ADR-0082 (#59)

Resolves a same-day numbering collision: the prior session produced
ADR-0080 + ADR-0081 (geometric stress field, falsified) in
docs/decisions/ while the frontier-provider-adapters work was
authored as ADR-0081 in a newly-created docs/adr/ directory,
unaware of the concurrent track.

This commit takes the minimum-blast-radius fix:
  - docs/adr/ADR-0081-...md → docs/adr/ADR-0082-...md
  - Update title header to ADR-0082, add "Renumbered from" breadcrumb
  - Update the two source-file docstrings that cite the ADR number
    (providers.py, model_registry.py)

The "two ADR directories" question (docs/adr/ vs docs/decisions/)
is NOT resolved here — docs/adr/ now has exactly one entry, while
docs/decisions/ is the canonical location per CLAUDE.md.  A future
PR should either consolidate or document the split; this commit
just unblocks the immediate naming collision.

Out of scope:
  - Consolidating directories
  - Renumbering anything in docs/decisions/
  - Re-numbering on the dev's local main (already pulled into this branch)

docs/adr/ADR-0082-frontier-provider-adapters.md

@@ -1,8 +1,9 @@
-# ADR-0081 — Frontier Provider Adapters
+# ADR-0082 — Frontier Provider Adapters
 
-**Status:** Ratified  
-**Date:** 2026-05-20  
+**Status:** Ratified
+**Date:** 2026-05-20
 **Author:** Shay
+**Renumbered from:** ADR-0081 (collided with a parallel `docs/decisions/` track; this `docs/adr/` track is renumbered to 0082 to keep both sequences monotonic).
 
 ---
 

evals/frontier_compare/model_registry.py

@@ -21,7 +21,7 @@ Adding a new model
 
 ADR
 ---
-ADR-0081 — Frontier provider adapters
+ADR-0082 — Frontier provider adapters
 """
 
 from __future__ import annotations

evals/frontier_compare/providers.py

@@ -46,7 +46,7 @@ Provider keys
 
 ADR
 ---
-ADR-0081 — Frontier provider adapters
+ADR-0082 — Frontier provider adapters
 """
 
 from __future__ import annotations