feat(B-0620): decompose 4023 slice 6 cross-operator generalization

docs/BACKLOG.md

@@ -642,6 +642,7 @@ are closed (status: closed in frontmatter)._
 - [ ] **[B-0662](backlog/P2/B-0662-closed-bidirectional-causal-loop-spec-fsharp-csharp-rust-chain-aaron-mika-2026-05-18.md)** Closed bidirectional causal loop spec ↔ F# ↔ C# ↔ Rust — each layer can regenerate the layer above + below; broken link = integrity violation (Aaron + Mika 2026-05-18 LOCKED-IN sharpening of B-0632)
 - [ ] **[B-0672](backlog/P2/B-0672-b0590-slice5-bare-metal-install-automation.md)** B-0590 slice 5: Bare-metal install automation
 - [ ] **[B-0676](backlog/P2/B-0676-b0620-slice-4-consolidator-script.md)** B-0620 slice 4 consolidator script
+- [ ] **[B-0677](backlog/P2/B-0677-b0620-slice-6-cross-operator-generalization.md)** B-0620 slice 6 cross-operator generalization
 
 ## P3 — convenience / deferred
 

docs/backlog/P2/B-0677-b0620-slice-6-cross-operator-generalization.md

@@ -0,0 +1,21 @@
+---
+id: B-0677
+status: open
+priority: P2
+title: B-0620 slice 6 cross-operator generalization
+created: 2026-05-20
+last_updated: 2026-05-20
+type: feature
+---
+
+# B-0677: B-0620 slice 6 cross-operator generalization
+
+## Scope
+
+Anonymize and generalize the Amazon-adapter's regex patterns and extraction logic so other Zeta operators can use it unchanged, without any hardcoded reliance on the original maintainer's specific account structures or locale formats.
+
+## Acceptance
+
+- [ ] Review `tools/inventory/amazon-orders-extract.ts` and remove any maintainer-specific hardcoded assumptions.
+- [ ] Ensure extraction logic handles multi-locale or standard cross-operator variations.
+- [ ] Add documentation demonstrating how a new operator can plug in their own account credentials securely and run the extract.