docs(03): capture phase context

.planning/phases/03-interaction-quality-and-completeness/03-CONTEXT.md

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+# Phase 3: Interaction Quality and Completeness - Context
+
+**Gathered:** 2026-03-11
+**Status:** Ready for planning
+
+<domain>
+## Phase Boundary
+
+Every user action and app state gets appropriate visual feedback — loading spinners on form submits, edit affordances on inline-editable cells, save confirmation flashes, delete confirmation dialogs, designed empty states, and pastel-tinted loading skeletons. The app should feel complete and trustworthy, not half-built.
+
+</domain>
+
+<decisions>
+## Implementation Decisions
+
+### Edit affordance & save feedback
+- Pencil icon appears on hover only, subtle opacity fade-in — not always visible
+- Pencil positioned to the right of the cell value
+- Save confirmation: soft green row highlight using --success token, fades over ~600ms, applies to entire row
+- Save failure: red flash using --destructive token, value reverts to original — no toast, no modal
+- All changes go into InlineEditCell.tsx (already extracted in Phase 1)
+
+### Empty states & loading skeletons
+- Empty state style: icon + text only (lucide-react icon, no custom illustrations)
+- Shared template structure (icon + heading + subtext + CTA button), unique content per section
+- CTA tone: direct action — "Create your first budget" / "Add a category" — no fluff
+- Loading skeletons tinted per section using palette.ts light shades (bills skeleton uses bill light shade, etc.)
+
+### Spinner placement & style
+- Submit buttons replace text with spinner while loading (button maintains width via min-width)
+- Button disabled during loading to prevent double-submit
+- All four forms get spinners: Login, Register, Budget Create, Budget Edit
+- Use existing shadcn spinner.tsx component as-is
+
+### Delete confirmation dialog
+- Tone: clear and factual — "Delete [category name]? This cannot be undone."
+- Confirm button: "Delete" in destructive variant (red), paired with neutral "Cancel"
+- Delete button shows spinner + disables during API call (consistent with form submit pattern)
+- Scope: category deletion only (per IXTN-05), not budget deletion
+
+### Claude's Discretion
+- Exact animation timing and easing curves for hover/flash transitions
+- Empty state icon choices per section (appropriate lucide-react icons)
+- Skeleton layout structure (number of rows, widths) per section
+- Whether to extract a shared EmptyState component or inline per page
+
+</decisions>
+
+<specifics>
+## Specific Ideas
+
+- Save flash should use the same --success token established in Phase 1 for positive amounts — visual consistency
+- Error flash uses --destructive token — same red as auth Alert errors from Phase 2
+- Skeleton tinting reinforces the palette.ts color system from Phase 1 — each section previews its eventual color while loading
+
+</specifics>
+
+<code_context>
+## Existing Code Insights
+
+### Reusable Assets
+- `InlineEditCell.tsx`: Shared edit component — pencil icon and save flash go here
+- `ui/spinner.tsx`: Already installed, ready for button integration
+- `ui/skeleton.tsx`: Already installed, needs tint customization via className
+- `ui/dialog.tsx`: Already installed for delete confirmation
+- `lib/palette.ts`: Light shades available for skeleton tinting per section
+- `ui/alert.tsx`: Destructive variant installed in Phase 2
+
+### Established Patterns
+- `amountColorClass()`: Only allowed way to color amounts — save flash should not interfere
+- CSS variable customization: All shadcn theming via --token overrides, never edit ui/ source files
+- `cn()` utility for conditional className merging
+
+### Integration Points
+- `LoginPage.tsx` / `RegisterPage.tsx`: Add spinner to submit buttons
+- `BudgetSetup.tsx`: Add spinner to create/edit form submit
+- `CategoriesPage.tsx`: Add delete confirmation dialog, empty state
+- `DashboardPage.tsx`: Add empty state, loading skeletons per section
+- `BillsTracker.tsx`, `VariableExpenses.tsx`, `DebtTracker.tsx`: Loading skeletons with section tinting
+
+</code_context>
+
+<deferred>
+## Deferred Ideas
+
+None — discussion stayed within phase scope
+
+</deferred>
+
+---
+
+*Phase: 03-interaction-quality-and-completeness*
+*Context gathered: 2026-03-11*