docs: update documentation for P7 web UI dashboard completion

- README: add Web UI Dashboard section, update features list with all
  current capabilities (multi-channel, media pipeline, sandboxing, etc.),
  expand model providers table, update architecture diagram
- CHANGELOG: add P7 entries (dashboard SPA, 4 new gateway handlers)
- state.json: add P7 entry with all 6 phases and file lists, update
  overall_progress to reflect P0-P7 completion
- web-ui-dashboard.md: mark as completed with detailed phase outcomes

README.md

@@ -4,16 +4,24 @@ Self-hosted personal AI assistant with Telegram and Terminal interfaces.
 
 ## Features
 
-- **Multi-Frontend**: Telegram bot + Terminal UI (minimal & fullscreen modes)
-- **Multi-Model**: Anthropic Claude, OpenAI, Ollama with intelligent routing
+- **Multi-Frontend**: Telegram bot + Terminal UI (minimal & fullscreen modes) + Web UI dashboard
+- **Multi-Model**: Anthropic Claude, OpenAI, GitHub Copilot, Gemini, Bedrock, Ollama, llama.cpp with intelligent routing
+- **Multi-Channel**: Telegram, Discord, Slack, WhatsApp with unified adapter interface
+- **Web Dashboard**: SPA control panel with health monitoring, chat, session browser, and settings editor
 - **Model Switching**: Switch between cloud/local models on demand
 - **Session Persistence**: SQLite-backed conversation history
 - **Fallback Chains**: Automatic failover when primary model fails
 - **Hook Engine**: Confirmation system for sensitive operations
+- **Tool Framework**: Shell, file, web-fetch, web-search, browser control, image analysis, media send
+- **Docker Sandboxing**: Per-session container isolation for tool execution
+- **Multi-Agent Routing**: Config-driven agent selection per sender/channel with tool profiles
+- **Media Pipeline**: Image analysis, outbound attachments, audio transcription across all channels
 - **Session Transfer**: Move conversations between frontends
 - **CLI**: Full command-line interface (`flynn start`, `send`, `doctor`, etc.)
 - **Cron Scheduling**: Automated messages on cron schedules with output routing
 - **Health Diagnostics**: `flynn doctor` validates config, connectivity, and system state
+- **MCP Integration**: External tool servers via Model Context Protocol
+- **Skills System**: Extensible capability packages (bundled, managed, workspace tiers)
 
 ## Quick Start
 
@@ -96,7 +104,11 @@ hooks:
 |----------|--------|
 | Anthropic | `provider: anthropic`, `api_key` or `auth_token` |
 | OpenAI | `provider: openai`, `api_key`, optional `endpoint` |
+| GitHub Copilot | `provider: github`, auto-login via OAuth device flow |
+| Gemini | `provider: gemini`, `api_key` |
+| Bedrock | `provider: bedrock`, AWS credentials |
 | Ollama | `provider: ollama`, `model`, optional `endpoint` |
+| llama.cpp | `provider: llamacpp`, `endpoint` |
 
 ### Model Tiers
 
@@ -121,6 +133,21 @@ models:
 | `/cloud` | Switch to cloud model |
 | `/model` | Show model info and options |
 
+## Web UI Dashboard
+
+Flynn includes a built-in web control dashboard served by the WebSocket gateway. Access it at `http://localhost:18800` (or your configured gateway port).
+
+### Pages
+
+| Page | Description |
+|------|-------------|
+| **Dashboard** | System health cards, channel status, usage stats. Auto-refreshes every 10s |
+| **Chat** | Session selector, streaming tool events, markdown rendering with syntax highlighting |
+| **Sessions** | Browse all sessions, view message history, delete sessions |
+| **Settings** | Edit hook patterns (confirm/log/silent), view tools, channels, and redacted config |
+
+The dashboard is a vanilla JS SPA with no build step — hash-based routing, ES modules, and the existing WebSocket JSON-RPC protocol.
+
 ## Terminal UI
 
 ```bash
@@ -278,22 +305,32 @@ Exit code is `1` if any check fails, `0` otherwise. Checks that depend on a vali
 
 ```
 src/
+├── agents/               # Multi-agent routing
+├── auth/                 # OAuth flows (GitHub Copilot)
+├── backends/native/      # Agent implementation + orchestrator
+├── channels/             # Channel adapters (Telegram, Discord, Slack, WhatsApp, WebChat)
 ├── cli/                  # CLI commands (commander)
 ├── config/               # YAML config + Zod validation
-├── models/               # Model providers + router
-├── backends/native/      # Agent implementation
-├── session/              # SQLite persistence
+├── context/              # Token estimation + compaction
+├── daemon/               # Lifecycle management + routing
+├── frontends/
+│   ├── telegram/         # Telegram bot
+│   └── tui/              # Terminal UI (minimal + fullscreen)
+├── gateway/              # WebSocket gateway + web UI dashboard
+│   ├── handlers/         # JSON-RPC method handlers
+│   └── ui/               # SPA dashboard (vanilla JS)
+│       ├── pages/        # Dashboard, Chat, Sessions, Settings
+│       └── lib/          # WebSocket RPC client
 ├── hooks/                # Confirmation engine
-├── daemon/               # Lifecycle management
-├── channels/             # Channel adapter abstraction
-├── automation/           # Cron scheduler
-├── gateway/              # WebSocket gateway + web UI
 ├── mcp/                  # MCP tool server integration
+├── memory/               # Persistent memory store
+├── models/               # Model providers + router + media pipeline
+├── prompt/               # System prompt templating
+├── sandbox/              # Docker sandboxing
+├── session/              # SQLite persistence
 ├── skills/               # Skill packages
-├── tools/                # Builtin tools (shell, file, web)
-└── frontends/
-    ├── telegram/         # Telegram bot
-    └── tui/              # Terminal UI
+├── tools/                # Builtin tools (shell, file, web, browser, process, media)
+└── automation/           # Cron scheduler
 ```
 
 ## Development