f73bf425ec
- llm-deepseek: the uncatalogued resolveModel fallback declares text-only modalities — the wire route is text-only regardless of catalog membership, so "unknown" must not let the host persist-then-fail images. - session.selectModel also consults the pending-inbox mirror: a queued image prompt enters the log only when claimed, after a switch would land. - attachment store: ensureDurableDirectory syncs every ancestor entry up to a caller-vouched boundary regardless of what mkdir reports — a raced "already existed" is not "already durable". - One image walker (imageBlockIn/imageInEvent) now serves both attachment authorization and the selection gate; referencedImage therefore also authorizes references inside wrapped message content. - InputHub: the scope disposer resolves the conversation service optionally (teardown/HMR must reach quiescence), and a send failing after its scope died releases the in-flight drafts instead of restoring them onto a disposed shell. - http-bridge destroys declared-oversize requests with connection: close instead of draining a body the client can trickle indefinitely. - LlmService validates AND detaches modality arrays identically on the advisory and exact routes; READMEs record the fourth INVALID_MODEL_INFO rejection reason. - CLI provider docs (JSDoc, README pair, Agent Note pair) describe the reuse behavior; llm-route.spec now parses the SHIPPED cordis.yml through the production extraction, pinning the row coupling. - image-display lane pins gallery/rail shape in inline snapshots and the object-URL scheme this environment must take; stale host.schema comment dropped.
DeepSeek Harness
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DeepSeek Harness (dsh) is an open-source coding agent built on the DeepSeek Harness SDK.
It uses an architecture where everything is a plugin.
Install
Install dsh with one command:
curl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh
The installer requires git and Node ^22.19 || >=24, offers to install pnpm when it is missing, and prompts for a DeepSeek API key.
The installer keeps every checkout under ~/.dsh/source: the master clone at ~/.dsh/source/master and each install's staging checkout as a git worktree ~/.dsh/source/staging-<timestamp>. The stable symlink ~/.dsh/source/current points at the active staging worktree, and dsh in ~/.local/bin links to current/bin/dsh, so an upgrade repoints one symlink and the dsh on PATH never moves. Re-running the command adds a fresh staging worktree from an updated master and repoints current at it. See scripts/install.sh for alternate install locations and other options.
Use DeepSeek Harness
Web UI
For the recommended local interface, build the frontend after installation and after each update, then start the Web UI. Resolve the running checkout from the dsh launcher so the command holds regardless of which staging worktree is current (the launcher resolves through the stable current symlink):
dsh_bin=$(cd "$(dirname "$(command -v dsh)")" && pwd -P)/$(basename "$(command -v dsh)")
while [ -L "$dsh_bin" ]; do
link=$(readlink "$dsh_bin")
case $link in /*) dsh_bin=$link ;; *) dsh_bin=$(cd "$(dirname "$dsh_bin")" && cd "$(dirname "$link")" && pwd -P)/$(basename "$link") ;; esac
done
dsh_dir=$(cd "$(dirname "$dsh_bin")/.." && pwd -P)
pnpm --dir "$dsh_dir" run build && pnpm --dir "$dsh_dir" run build:web
dsh web
The Web UI is served at http://127.0.0.1:3080 by default.
TUI
Start the full-screen terminal interface:
dsh
Headless
Run one task, print the final answer, and exit:
dsh -p "summarize this workspace"
Why DeepSeek Harness
Built-in capabilities cover file reading, editing, and search; shell execution; reusable skills; task tracking; subagents and workflows; persistent sessions; and context compaction. The TUI also includes Plan Mode.
- Everything is a plugin. Models, tools, policies, storage, context management, and interfaces are composable Cordis plugins, so deployments can extend or replace behavior without forking the agent loop. See the architecture for the underlying design.
- Code Mode (opt-in). It exposes a
run_codetool and a generated TypeScript SDK; only program output re-enters model context. See Code Mode. - Self-referential Cordis tools are opt-in. They let the agent inspect its live runtime and mount or unmount plugins while it runs. See the Cordis tools.
Community
Follow DeepSeek Harness on Twitter for project updates.
Development
pnpm install
pnpm run test:coverage
Start with the development guide and read the architecture before changing packages.
For agents, follow AGENTS.md.
DeepSeek Harness is currently pre-release.