onboard-dsh-projects

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A DeepSeek Harness skill that lets one AI session drive many code repositories — without their contexts bleeding into each other.

The scariest failure mode in AI-assisted coding isn't a weak model — it's crossed context. Debug a bug across three repos and repo A's instructions leak into repo B's code; you edit the wrong branch, or write somewhere you shouldn't. onboard-dsh-projects puts every repository in its own isolated entry agent, then adds an optional controller to orchestrate the whole effort.

Why it exists

In one line: when a feature, incident, or release spans multiple repositories with different instructions, branch rules, test commands, or write scopes — this is the skill for it.

Dependencies (read before installing)

scripts/preflight.ps1 checks every dependency and fails closed on status=blocked.

What you get

• ✅ Per repository: one read-only verification → one snapshot index (structure / entrypoints / docs / glossary) → one long-lived entry subagent
• ✅ Optional controller: dispatch queue state machine + hash-chained CHAIN records + three-tier model routing + bounded experience reuse
• ✅ External-write lane: Jenkins / Nacos / DB / Redis / SSH changes go through a capability registry with per-dispatch user authorization and the same CHAIN accounting — with a no-lane brake so the controller never does ops work itself
• ✅ Mandatory request routing — every request is classified first: external mutations → external-write lane, single-repo work → that repo's entry agent (never a one-shot stand-in), multi-repo or contract work → workflow dispatch; mixed requests are split and sequenced
• ✅ Cost discipline — economy-first tiering (flash by default), per-batch controller session rotation, and off-peak batching to keep context-cache spend bounded
• ✅ Dependency gating — a dispatch can declare dependencies on earlier dispatches (with allowed terminal states); the queue refuses to start it until satisfied, and a blocked head can be canceled without deadlocking the FIFO
• ✅ Goal ledger: register, advance, and terminate goals in the manifest (register-goal / advance-goal / terminal-goal), linkable to a CHAIN
• ✅ Authoritative contract: the SKILL.md section "Controller / Entry-Agent Contract" pins down responsibilities, boundaries, and the collaboration order for both sides — violations are reported, never silently worked around
• ✅ Every piece of state is CAS-hash-verified; mutations must go through a Read → Prepare → Apply → Read protocol — no hand edits, no drift
• ✅ Toolchain preflight, closed input parsing (rejects credentials, unsafe refs, duplicate conflicts); fails closed by default

Architecture

flowchart LR
    U[User] --> C[Controller agent]
    C -->|dispatch balanced| E1[Repo A entry agent]
    C -->|dispatch balanced| E2[Repo B entry agent]
    C -->|dispatch frontier| E3[Contract freeze / high-stakes work]
    E1 --> I1[(A snapshot index)]
    E2 --> I2[(B snapshot index)]
    C --> Q[(Dispatch queue + CHAIN hash ledger)]
    Q --> M[Monthly archive]
    E1 -->|result evidence| C
    E2 -->|result evidence| C

Quick start (30 seconds)

Full walkthrough from a clean machine to a running controller session: docs/getting-started.md (简体中文).

In a DeepSeek Harness conversation, just say:

Use onboard-dsh-projects.

sources:
- source: C:\work\service-a
- source: C:\work\web-app
indexMode: full

For cross-project work, add the controller:

Use onboard-dsh-projects.

sources:
- source: C:\work\service-a
- source: C:\work\web-app
controllerRoot: <absolute path inside the workspace>
initializeController: true
createControllerAgent: true

Then hand the problem to the controller in plain language:

Trace the H5 login flow end-to-end across the H5 app, mall backend, and member service.
Read-only first, freeze the shared interface contracts, dispatch checks to each repo's
entry agent, and return end-to-end evidence.

Highlights

• 🧩 Four-quadrant intake protocol — shared-known / user-known / agent-known / shared-unknown each get their own handling; no guessing, no interrogation
• 🔒 Read-only onboarding, writes authorized separately — external repos are read-only by default; cloning, branch switches, and commits each require explicit authorization
• 🎯 Model routing — ships with DSH's DeepSeek models: economy → deepseek-v4-flash, balanced/frontier → deepseek-v4-pro; one command to change (set-model-tier)
• 🛡️ External-write lane — production mutations (Jenkins, Nacos, MySQL, Redis, SSH) never run bare: capability registry + per-dispatch authorization + evidence gates + rollback
• 🧾 Hash-chained ledger — one CHAIN per dispatch, line-by-line hash chaining, terminal records archived under state/archive/YYYY-MM/; verifiable and traceable
• 🧪 Tested for real — every script runs on Windows PowerShell 5.1: preflight, input parsing, indexing, CAS state machine, dispatch queue, chain store, external-write and Goal operations; end-to-end integration tests green

Versus one long session

Entry agents can still use subagents and workflows internally — the two compose.

Honest boundaries

• This is workflow isolation, not a security sandbox: it changes no filesystem permissions and never transfers authorizations between repos
• The index is a snapshot, not a live view; bindings and indexes are re-verified before cross-session work
• Model routing depends on the models your deployment registers; an unconfigured tier falls back to the session default model

Development

• The repository is the source of truth. Iterate in the repo, then sync the changed files to your DSH skills directory (for example ~/.dsh/skills/onboard-dsh-projects/).
• Run the test suites: powershell -NoProfile -ExecutionPolicy Bypass -File ./tests/run-all.ps1 (Windows PowerShell 5.1). CI runs the same command on every push and pull request.
• Windows notes: keep test scripts ASCII or UTF-8 with BOM (PowerShell 5.1 misreads BOM-less non-ASCII files); the repo normalizes CRLF via core.autocrlf=true.
• State-machine changes go through tools/control-state.ps1 with the CAS protocol; never hand-edit manifests or CHAIN files.

License

MIT

If this project helps you, give it a Star ⭐ — or send it to a friend who is also fighting multi-repo context pollution. Feedback and PRs are always welcome.