docs(spec): Restructure UX docs and add visual reference

Break up v2_ux.md (1400+ lines) into smaller, focused documents:
- v2_ux.md - Core UX (overview, server list, modals)
- v2_ux_features.md - Feature screens (Tools, Resources, etc.)
- v2_ux_handlers.md - Client handlers, form generation, errors
- v2_screenshots.md - Visual reference with Shadcn prototype screenshots

Add screenshots from Shadcn prototype to specification/screenshots/.
Update navigation headers across all spec files.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

specification/v2_screenshots.md

@@ -0,0 +1,116 @@
+# Inspector V2 UX - Visual Reference
+
+### [Brief](README.md) | [V1 Problems](v1_problems.md) | [V2 Scope](v2_scope.md) | [V2 Tech Stack](v2_tech_stack.md)
+### UX: [Overview](v2_ux.md) | [Features](v2_ux_features.md) | [Handlers](v2_ux_handlers.md) | Screenshots
+
+---
+
+This document provides visual screenshots of the **Shadcn UI prototype** implementation. These complement the ASCII wireframes in the UX specification documents.
+
+## Table of Contents
+  * [Server List](#server-list)
+  * [Server Modals](#server-modals)
+  * [Feature Screens](#feature-screens)
+  * [Client Feature Handlers](#client-feature-handlers)
+
+---
+
+## Server List
+
+The home screen showing server connection cards in a responsive grid.
+
+### Light Theme
+![Server List - Light](screenshots/shadcn-serverlist.png)
+
+### Dark Theme
+![Server List - Dark](screenshots/shadcn-serverlist-dark.png)
+
+### Add Server Dropdown
+Options for adding a new server (manual, import config, import server.json).
+
+![Add Server Dropdown](screenshots/shadcn-addserver-dropdown.png)
+
+---
+
+## Server Modals
+
+### Server Settings Modal
+Per-server configuration including connection mode, headers, metadata, timeouts, and OAuth settings.
+
+![Server Settings Modal](screenshots/shadcn-settings-modal.png)
+
+### Server Info Modal
+Displays server/client capabilities, protocol version, and server instructions.
+
+![Server Info Modal](screenshots/shadcn-serverinfo-modal.png)
+
+---
+
+## Feature Screens
+
+### Tools Screen
+Tool list with annotations (user, read-only, destructive, long-running), parameter form, and results panel.
+
+![Tools Screen](screenshots/shadcn-tools.png)
+
+### Resources Screen
+Accordion layout with Resources, Templates, and Subscriptions sections.
+
+![Resources Screen](screenshots/shadcn-resources.png)
+
+### Prompts Screen
+Prompt selection, argument form with autocomplete, and message result display.
+
+![Prompts Screen](screenshots/shadcn-prompts.png)
+
+### Logging Screen
+Real-time log stream with all 8 RFC 5424 log levels, color-coded by severity.
+
+![Logging Screen](screenshots/shadcn-logs.png)
+
+### Tasks Screen
+Active and completed tasks with progress bars and status indicators.
+
+![Tasks Screen](screenshots/shadcn-tasks.png)
+
+### History Screen
+
+Request history with replay and pin functionality.
+
+#### Light Theme
+![History Screen - Light](screenshots/shadcn-history.png)
+
+#### Dark Theme
+![History Screen - Dark](screenshots/shadcn-history-dark.png)
+
+---
+
+## Client Feature Handlers
+
+### Test Client Features Dropdown
+Menu for testing client capabilities (Sampling, Elicitation, Roots).
+
+![Client Features Dropdown](screenshots/shadcn-clientfeatures-dropdown.png)
+
+### Sampling Panel
+Handler for `sampling/createMessage` requests with mock response input.
+
+![Sampling Panel](screenshots/shadcn-sampling-panel.png)
+
+### Elicitation Form
+Form-based handler for `elicitation/create` requests with JSON Schema-generated fields.
+
+![Elicitation Form](screenshots/shadcn-elicitation-form.png)
+
+### Roots Configuration
+Configure filesystem roots exposed to the connected server.
+
+![Roots Configuration](screenshots/shadcn-roots-config.png)
+
+---
+
+## Notes
+
+- All screenshots are from the `v2/prototype/shadcn` branch
+- Dark theme is supported throughout the application (toggle in header)
+- Screenshots may not reflect the latest implementation - refer to wireframes for authoritative UX