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Sidebar billing dashboard: real usage aggregated from session logs (per-model and per-day calls/tokens/cache), cost estimated in CNY from a current multi-provider pricing catalog, subscription-plan (coding/token/agent) routes exempt, and per-provider health dots.

Cost tracking priced from an online catalogue (models.dev + OpenRouter, 8000+ models, each call priced at its own instant): a per-turn cost line, a Cost tab attributing spend to tool output / model output / system prompt / commands, budget, monthly forecast, ~166 live-rate currencies, and a bill_stats agent tool.

Adds a Settings Usage dashboard for DeepSeek API balance, official token and cost analysis, trends, context warnings, and live API activity.

Real-time token billing for DSH web: official DeepSeek CNY pricing with automatic peak/off-peak switching, hourly price sync from the official site, visual custom model prices, and multi-currency fallback.

**DeepSeek Chat (chat.deepseek.com) same-style attachments**: paperclip upload button, 240×64 DS-style file cards with official colored doc icons (PDF/DOCX/XLSX/PPT/IMG extracted from the DS frontend bundle), drag-and-drop, text extraction (PDF/DOCX/XLSX/TXT) injected into the message, and real attachment cards rendered in the transcript (custom user renderer) with the model reading full content.

Live-tune the DSH Web conversation UI from Settings: message font size, Claude Desktop-style markdown tables, dialog width, an optional timeline rail, and a GitBar with branch management, per-file diff, and commit & push.

Google AI Studio-style floating preview for the Web UI: a draggable/resizable iframe preview with aspect-ratio and resolution presets, plus a VS Code-style code window with direct editing, confirmed writes, and session-log recording.

Automatically folds tool calls into Think-segment groups and collapses each finished turn into a single header showing duration, token, throughput, and cache-hit metrics.

Left-edge user-Turn navigation rail with reading-position highlighting, hover previews of per-turn metrics and model-answer excerpts, keyboard and click-to-jump controls, and local conversation search.

Fully customizable keyboard shortcuts for the Web UI: 34 pre-registered features (sessions, views, clipboard, models, silent permission cycling, settings), one-click recording to bind your own, and a shortcut cheatsheet with built-in diagnostics.

Right-hand widget rail for the DSH Web UI: live session stats (turns, LLM/tool time, TTFT, speed, cache, tokens) and OpenCode Go quota via a same-origin host proxy; extensible widget registry for more platform usage widgets, visuals, utility actions and external integrations.

Workspace file tree for the Web UI: multi-tab preview (text/DOCX/PDF/Markdown/CSV/images), inline Markdown editing, a Git changes panel, and file operations (rename/delete/copy/move/create) via context menu.

Session-scoped Markdown writing pad docked beside the conversation, with edit/preview modes, selection-based AI rewrites, diff review, undo, and draft recovery.

Conversation Canvas tab: live-preview workspace HTML artifacts and export PNG/JPG/SVG locally (`npx dsh-canvas-preview`).

Windows one-click launcher with a borderless WPF startup animation (stroke-by-stroke HARNESS lettering) that starts dsh web in the background and fades into the GUI once ready, plus a desktop_launch tool.

Adds a docked-first vertical shorts wall to the DSH Web UI with YouTube Shorts and Bilibili sources, keyword rotation, four-corner resizing, and Alt+S/Alt+M shortcuts.

Right-side prompt toolbox panel with 24 built-in deep templates plus user-defined ones, accessible via the /prompt slash trigger and a context-aware floating suggestion card; one-click inserts the selected prompt into the composer.

Multi-window wall for the DSH Web UI: run and monitor N conversations side-by-side in one screen, with auto-discovery, per-window controls, and an authenticated LAN gateway for phone/tablet access.

Pixel-art whale desktop companion with 29 frame-audited states — taps the glass and flashes the tab title when an approval waits, speaks a completion report when a turn ends, and adds a slash-command palette to the web client.

VS Code-style file manager: browse the conversation workspace in a sidebar tree and edit files in the center column with Monaco, with theme import/export and Markdown preview.

Adds searchable filtering to the model selector by provider, model name, and model ID; spaces act as wildcards.

ask_user_question용 협조적 타임아웃 가드: 유실되거나 답변되지 않은 질문이 턴을 영원히 멈추는 대신 구조화된 ASK_TIMEOUT으로 처리됨

DSH 세션을 진단, 정체 해소, 조회: 에이전트 상태와 함께 세션 목록 표시, 대화 읽기, 정체된 에이전트 진단, cancel+keepInbox로 복구, 다른 세션으로 메시지 전송

DSH 세션과 승인된 Agent Team Room 간의 비동기 LLM 요약 컨텍스트 중계, 즉시 스냅샷과 예약된 요약 제공