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Session instruction anchor for DeepSeek Harness: the first step of a new session injects a freely composed instruction block as a plugin-sourced message, and it is re-anchored after a summarizing compaction, every N turns, or when metered context pressure crosses a threshold. An /anchor command re-anchors on demand without a model call; a settings page manages the paged preset library, injection order, re-anchor source and character limits.

SiYuan (思源笔记) notes integration: 17 siyuan_* host tools covering notebook and document listing, full-text search, SQL query, reading documents and blocks, creating and appending content, moving and renaming documents, daily notes and block attributes, plus a Web settings page for the SiYuan URL, API token and per-tool switches.

An editable diagram canvas in the DSH sidebar plus two agent tools (diagram_read, diagram_apply) that read and edit the workspace in place, using native .drawio files: the canvas opens and saves them losslessly — cells it does not understand are preserved byte-for-byte — and a file-fingerprint revision powers optimistic locking against concurrent edits.

Injects the current date and time into the runtime context on every turn, so the agent can read the time instead of inferring it.

Renders mermaid code blocks in the chat as diagrams in place (flowchart, sequence, class, state, ER, gantt, pie), with zoom, source toggle, copy PNG and SVG download.

Global prompt-injection / context-virus defense for DeepSeek Harness: scans tool arguments, tool results, pre-model messages and the outbound stream; quarantine/block/monitor modes, canary trap, and an evolvable on-disk signature library with learn/import/export.

Irreversible secret-scrubbing guard: rewrites access keys, bearer tokens, and private key blocks into `[REDACTED:<category>]` placeholders before they reach the session log and the model.

Multi-channel notifications for DeepSeek Harness: registers a send_notification tool and a settings page fanning out to NotifyX, WeCom app webhook, WeCom group robot, email (Resend), SMTP, DingTalk, Feishu robot; plus browser notifications and automatic notification on task completion and blocking events.

Product Design workflow suite for DeepSeek Harness - a router plus nine pd-* skills carrying ideas from a minimum design brief through visual directions, evidence-grounded research and audits, URL cloning, frontend builds and a blocking design-QA gate.

Detects WSL2 clock skew versus Windows that can break TLS and tokens.

Image generation workbench and agent tool for DSH: one tool (ark9_generate_image) paints text-to-image and image-to-image via any OpenAI-compatible API. Channels are entirely user-configured - no bundled endpoint, you bring your own baseURL, key and model name (manual input supported). Agent-initiated generations are approval-gated by default: requests queue in the floating panel and nothing bills until you approve; approval is non-blocking (the agent replies "awaiting your approval" immediately, and results, denials or timeouts are injected back so the agent reports them in the next turn). Floating glass workbench with five tabs (Generate / Approvals / Prompts / History / About), aspect-ratio grid with quality-budget + 16px-alignment sizing, transparent background, batch up to 10 images as aggregated sub-tasks, prompt library with custom JSON sources fetched through a host proxy, persistent generation logs with one-click retry, multi-channel aggregation with per-channel model fetching, bilingual UI (zh/en), stroke-SVG icon set, config import/export. Registers as a Better Sidebar tab when dsh-better-sidebar is installed; stacks above the dsh-cua FAB when both are present.

One-click search-engine switcher beside the DeepSeek Harness model picker; changes the dsh-free-search provider, handy on overseas university networks that block the DeepSeek Official search endpoint.

DeepSeek Harness plugin: GitHub repository/issue search, repo and issue details, and file reading tools (github_search / github_get). Anonymous by default; an optional read-only fine-grained token unlocks code search and raises the rate limit.

Single-password authentication gate for the dsh web surface: configurable session validity, Ctrl+Shift+L lock, CLI password management, brute-force lockout, in-UI password controls.

Unified quoting for DeepSeek Harness Web: select file-editor text or chat messages → annotate → 「引用#N」chip → the AI receives a formatted quote block with file path and exact line range (source line hidden on the user side); sent quotes collapse into a hov

DeepSeek Harness plugin: sound alerts for ten agent events — completion, subagent completion, background-job completion, approval, plugin approval, question, plan-review, goal-blocked, interruption, and background-job failure (browser Web Audio + system b

MUV engine for DeepSeek Harness: runs the regex_scripts from a character card against model output, tracks variables, renders a status bar, expands macros and LaTeX, and styles tagged code blocks such as letter, terminal, newspaper and phone. Needs dsh-muv-table installed as well, which is its companion plugin.

Branch-role guard for AI coding agents: configurable integration/preview/production/archive roles, blocking direct push, force-push and delete on protected branches and agent merges into production/archive.

Quote earlier content of the current session into the composer: select text in any message for a Quote pill, or type @ to pick a whole message; the quote travels as a native reference chip and is serialized into the prompt as a blockquote. Client-only, no host routes, no custom session events.

Listen to Xiaoyuzhou (小宇宙) podcasts in the DSH web UI: paste a share link to play anonymously (host proxies the audio with Range/seek), or log in via QR code to sync subscriptions, keyword-search shows/episodes, page full episode lists, and unlock purchased paywalled episodes; a `podcast_play` tool lets the agent play by link, podcast pid, or episode eid.

A pouch of practical micro-plugins for DSH: per-turn wall-clock time injection, safe restart, session ID header badge, Tavily search provider, configurable LLM request-header routes, and an MCP server console managing the official @deepseek-ai/dsh-mcp-client at runtime — add/edit/enable/disable/reconnect, per-tool switches, live status over SSE, mcpServers JSON import, and auto-migration of profile-YAML MCP entries.

Static-only plugin gate and clinic for DSH: audit before install, hash-and-capability lock after install, local fingerprint peer search over GitHub topic:dsh-plugin, and mechanical detox. Never executes the target plugin.

Single-model disable gate: hides denied models from DSH catalogs, blocks direct dispatch with an in-protocol error chunk, and exposes a settings UI for the denylist.

Step-0 observation probe for dsh-compaction-audit: logs every compaction/* session event and probes whether shadowedSeqs still resolve to readable events in session.events. Observe-only; never injects, never blocks.