docs(37): capture phase context

.planning/phases/37-admin-global-item-management/37-DISCUSSION-LOG.md

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+# Phase 37: Admin — Global Item Management - Discussion Log
+
+> **Audit trail only.** Do not use as input to planning, research, or execution agents.
+> Decisions are captured in CONTEXT.md — this log preserves the alternatives considered.
+
+**Date:** 2026-04-19
+**Phase:** 37 — Admin — Global Item Management
+**Areas discussed:** List view style, Edit workflow, Brand/manufacturer field, Delete confirmation
+
+---
+
+## List view style
+
+| Option | Description | Selected |
+|--------|-------------|----------|
+| Data table | Dense rows with columns for brand, model, category, weight, price, tags, owner count. Sortable, scannable, admin-appropriate. | ✓ |
+| Card grid | Consistent with public catalog. Reuses GearImage/card patterns but wastes space for data management. | |
+| List rows (compact) | Single-line rows with brand/model + a few stats. Middle ground. | |
+
+**User's choice:** Data table
+
+**Table columns selected:** Brand + Model, Category + Weight + Price, Tags, Owner count
+
+**Pagination:** Server-side infinite scroll — load next page on scroll, not explicit next/prev buttons
+
+---
+
+## Edit workflow
+
+| Option | Description | Selected |
+|--------|-------------|----------|
+| Dedicated edit page /admin/items/$id | Full-page form, bookmarkable, consistent with detail page pattern. | ✓ |
+| Slide-over drawer | Slides in over list, keeps list context. Requires new drawer component. | |
+
+**User's choice:** Dedicated edit page
+
+**Delete location:** Edit page only (not on list)
+
+---
+
+## Brand/manufacturer field
+
+| Option | Description | Selected |
+|--------|-------------|----------|
+| Dropdown of existing manufacturers | Admin picks from list fetched from /api/manufacturers. Safe, no duplicates. | ✓ |
+| Free-text with auto-match | Admin types brand; matched or created on save. Risks duplicates. | |
+
+**User's choice:** Dropdown of existing manufacturers
+
+---
+
+## Delete confirmation
+
+| Option | Description | Selected |
+|--------|-------------|----------|
+| Impact-aware | Show item name + owner count: "3 users have this in their collection. This cannot be undone." | ✓ |
+| Simple confirmation | "Are you sure? This cannot be undone." No extra data. | |
+
+**User's choice:** Impact-aware confirmation with owner count
+
+---
+
+## Claude's Discretion
+
+- Column sort order and default sort
+- Tags column display (chips vs count badge)
+- Edit form field layout (single vs two-column)
+- IntersectionObserver implementation for infinite scroll trigger
+- Delete button styling and position on edit page
+
+## Deferred Ideas
+
+- Manufacturer creation from within admin panel (out of scope for this phase)
+- Bulk delete / bulk edit from the list
+- Column sorting (not in success criteria; Claude's discretion)