pkg stores application files in a virtual filesystem, and its worker_threads hook discovers worker entry points only when they are passed as filesystem strings. Convert the code-runtime entry with fileURLToPath() and return the workflow built entry as a string while retaining its source-mode data URL bootstrap. Emit worker entry bundles as CommonJS .cjs files. pkg executes a VFS-backed string-path worker through Module._compile, so an ESM-only entry can be present in the executable yet still fail when launched. Keep the public hosts ESM, adapt worker startup accordingly, and align exports, package file lists, workspace constraints, documentation, and built-worker tests with the actual artifact format. Expand the custom-config executable smoke to load the Code Mode and workflow plugins and script real run_code and zero-agent workflow calls. Require both tools to return 42 from workers launched inside the pkg VFS, turning worker support from an asset-presence assumption into an end-to-end runtime contract. Update the implemented RFC and verification gates to describe and exercise the supported built-worker path. This adds no tool or JSON-RPC protocol shape; it fixes how existing worker-backed capabilities are located and executed in the single-file distribution.
Packages
Harness packages use the @deepseek-ai/dsh-* scope. Each is a Cordis plugin: a default Service subclass or functional plugin declaring ctx keys/events through declaration merging and contributing through ctx.effect(), ctx.on(), or ctx.waterfall(). Authoring conventions: AGENTS.md and root AGENTS.md § Conventions.
Hierarchy
Packages are grouped by modular role at packages/<group>/<pkg>/. The group directory is a pure container (no package.json); the package name stays @deepseek-ai/dsh-<pkg> regardless of group. Each group README is the canonical per-package map — package roles, ctx keys, and the product-vs-support split live there, next to the code.
| Group | Role | Release expectation |
|---|---|---|
core/ |
Product API spine: session, system-prompt, tools, agent, and the concrete loop | Product — stable surface |
llm/ |
LLM capability family: the abstract service + provider adapters | Product — stable surface |
bash/ |
Bash capability family: the executor seam, a local impl, and the model-facing tool | Product — stable surface |
code-runtime/ |
Code-execution capability family: the abstract runtime seam for model-written programs + a worker-thread backend | Product — stable surface |
sandbox/ |
Process-confinement seam; bwrap/Landlock/Seatbelt backends | Product — stable surface |
fs/ |
Filesystem capability family: the abstract seam, a local impl, and the model-facing file tools | Product — stable surface |
skill/ |
Skill capability family: the provider registry, local provider, and model-facing catalog/loader | Product — stable surface |
compact/ |
Compaction capability family: the abstract seam + a basic backend (tool deferred) | Product — stable surface |
subagent/ |
Subagent capability family: the provider-registry seam and the model-facing delegation tool | Product — stable surface |
workflow/ |
Workflow capability family: the script-engine seam, the worker-thread engine, and the model-facing workflow tool |
Product — stable surface |
web/ |
Web capability family: the abstract seam, search/fetch provider impls, and the model-facing web tools | Product — stable surface |
timeout/ |
Tool-call timeout policy: the tools/execute deadline enforcer |
Product — stable surface |
todo/ |
Todo/planning family: the model-facing todo_write tool |
Product — stable surface |
guard/ |
Loop-hygiene guards: advisory repeat-call reminders | Product — stable surface |
cordis/ |
Self-referential runtime toolset: inspect the live runtime's plugins and services, mount/unmount model-written plugins (design) | Product — stable surface |
hooks/ |
Hook bridges + the shared Claude Code / Codex wire-protocol library | Product — stable surface |
session-persistence/ |
Persistence capability family: the seam + JSONL/SQLite backends | Product — stable surface |
ui/ |
Editor/client integration surfaces: ACP bridge, JSON-RPC SDK server, app packages, user-approval and user-interaction seams, ask-user tool | Product — stable surface |
support/ |
Dev/test/example infrastructure (invariants, replay adapter, subagent mock) | Support — lower compatibility expectations |
util/ |
Low-level zero-dependency utilities shared across groups (the Branded<B> primitive) |
Support — small, stable, harness-dep-free |
The split is the point: a package's group says whether it is part of the product API or support/test/example infrastructure, so release and removal decisions do not treat every package as an equal public contract. New packages join an existing group; adding a new top-level group is a deliberate act (extend the group READMEs and this table).
Dependencies
The inter-package dependency graph is generated: docs/module-graph.md (pnpm run gen-module-graph, freshness-gated in CI).
The rule it must obey: extension plugins depend on interfaces, never on the concrete loop. dsh-agent-loop is swappable — UI/hook/tool plugins keep working against the dsh-agent vocabulary if the loop is replaced. The sanctioned exception is a composition/bundle package like dsh-agent-core, whose whole job is to assemble the concrete spine: it depends on dsh-agent-loop (and the other concrete spine plugins) on purpose. The rule constrains plugins that EXTEND the system, not the bundle that COMPOSES it. A swappable capability splits into interface / implementation / consumer packages (the bash trio is the template — see capability seams).
Each package has its own README.md with purpose, service API, events, extension points, and deliberate non-goals (TODOs).