fix(folio): stop abusing contentDescription as data carrier (#45)

* feat(hierarchy): full-attribute selector system

- Add Attributes map to Element (raw platform attrs + serialized booleans)
- Add Selector / AttrFilter types for multi-filter AND matching
- Add matchAttr with alias expansion and substring/boolean semantics
- Add matchSelector (AND of all filters)
- id: and desc: keep exact/suffix/prefix semantics for backward compat
- text: widens to substring via matchAttr
- default: case routes unknown kinds to matchAttr (NEW)
- Add Tree.FindNode / Tree.FindAllNodes returning *Node
- Add Node.Find / Node.FindAll for scoped subtree string search
- Add Node.FindBySelector / Node.FindAllBySelector for object AND search
- Add attributeAliases for cross-platform name expansion

* test(hierarchy): full-attribute selector coverage

- raw resource-id: substring match
- label:/content-desc: alias expansion to accessibilityText on iOS
- scrollable:true/false boolean exact match
- title: iOS-only attribute, graceful nil on Android
- text: substring widening
- Selector AND: both filters must match; single miss returns nil
- Node.Find scoped search: descendants only, not siblings

* feat(verifier): object-form selectors + attrs + element-level find

- ax.find/findAll accept string or {attr:value} JS objects
- Object form builds Selector with AND semantics
- Returned element objects expose attrs sub-object (raw platform attrs)
- Returned element objects expose .find() and .findAll() scoped to subtree
- Element-level .find/.findAll accept string or object selectors

* feat(spec): extend AccessibilityElement and AccessibilityTree types

- AccessibilityElement gains attrs, find(), findAll()
- find/findAll on both Tree and Element accept string | AttrSelector
- AttrSelector = Record<string, string> for object-form AND matching

* feat(folio): migrate to chained object-form selectors

- Replace path queries (desc:X > desc:Y) with chained API
- Screen root lookups use { accessibilityText: "ScreenName" }
- Element-scoped searches use find/findAll with string or object
- Keep string selectors for descPrefix: and desc:Back (shows both forms)

* fix(folio): use account_card:id desc, expose balance via text semantics

* fix(folio): embed accountId in LedgerScreen desc, expose values via text semantics

* fix(spec): replace desc-parsing with text-based parseDollarCents extraction

pkg/spec/src/types.ts

@@ -1,4 +1,5 @@
 export type Snapshots = Record<string, unknown>;
+export type AttrSelector = Record<string, string>;
 
 export interface AccessibilityElement {
   id?: string;
@@ -13,11 +14,14 @@ export interface AccessibilityElement {
   bounds?: { left: number; top: number; right: number; bottom: number };
   x?: number;
   y?: number;
+  attrs?: Record<string, string>;
+  find(selector: string | AttrSelector): AccessibilityElement | undefined;
+  findAll(selector: string | AttrSelector): AccessibilityElement[];
 }
 
 export interface AccessibilityTree {
-  find(selector: string): AccessibilityElement | undefined;
-  findAll(selector: string): AccessibilityElement[];
+  find(selector: string | AttrSelector): AccessibilityElement | undefined;
+  findAll(selector: string | AttrSelector): AccessibilityElement[];
 }
 
 export interface LogEntry {