[Web][W3] TinyChain State Widget Coverage

Add canonical UI representations for common TinyChain State types.

Acceptance Criteria

• State widget catalog covers prioritized scalar/map/tuple and collection types.
• Shared data-binding contract supports SSR-injected and browser-refreshed state.
• Example flows cover inspect, edit, paginate/filter/sort, and update loops.
• Serialization and state operation behavior is tested.

Tembo-sized implementation issues

• #82 — widget registry and read-only scalar/structured renderers
• #83 — collection inspection/filter/sort/page widgets
• #84 — editing, mutation, conflict, and error widgets

Dependency order: #82 first; #83 also consumes #80, while #84 consumes #79. This parent owns the end-to-end state-widget acceptance journey.

automation:
  eligible: false
  executor_profile: tembo
  readiness: rollup
  primary_repository: TinyChain-Inc/client
  base_branch: main
  writable_scope: []
  prerequisites:
    - "#82"
    - "#83"
    - "#84"
  concurrency_group: ui-state-rollup
  required_commands: []
  external_actions: none
  draft_pr_only: true
  completion_authority: human
  visual_validation:
    required: true
    baseline_update_requires: human-visual-approval

Start with the dependency issues #82, #83, and #84, then trace the parent acceptance criteria for the end-to-end State widget journey. Done means the prioritized widgets, SSR/browser data binding, example flows, serialization, and state-operation behavior are covered, including the required visual validation.