夏尔 Ciel — A pre-planning advisor for DeepSeek Harness: a second, broadly knowledgeable model that provides direction, precedents, pitfalls, and a verification checklist before work begins (ideas, not steps). Naming inspiration: the Great Sage Ciel from That Time I Got Reincarnated as a Slime. Config
The plugin will be installed here. Keep web if you are unsure.
npx -y @deepseek-ai/dsh plugin --profile web add dsh-ciel@0.19.0
Description
夏尔 Ciel — A pre-planning advisor for DeepSeek Harness: a second, broadly knowledgeable model that provides direction, precedents, pitfalls, and a verification checklist before work begins (ideas, not steps). Naming inspiration: the Great Sage Ciel from That Time I Got Reincarnated as a Slime. Configurable on the standalone 夏尔 Ciel page under Settings.
Compatibility and provenance
Ciel is published as dsh-ciel and currently resolves to version 0.19.0. The Hub verifies its manifest and preserves the exact installation source for reproducible installs.
A pre-planning advisor and a convergent critic for
DeepSeek Harness (DSH) —
a second, knowledge-rich model that offers directions, prior art, pitfalls,
and verification checklists before the main model commits to a plan.
Ideas, never steps. Named after Ciel, the in-head advisor from That Time I
Got Reincarnated as a Slime.
The value is not "the advisor is smarter" — it is distribution diversity
plus a forced separation of the exploring and executing cognitive roles. By
constraining the advisor to ideas only, understanding and landing the work
stays with the main model. Full argument: docs/design.md.
The /advise command has been removed. Advisor consultations use ask_advisor; existing command and advice records are retained.
How it flows
The local DSH 0.1.6-alpha.1 integration uses ptcRuntime and resolves PTC requests before execution. Ciel's private review runtime retains the shared review deadline and rejects per-call timeout or filesystem-policy overrides. DSH 0.1.5 installations continue to use codeRuntime.
flowchart TD
U[user request] --> E[main model explores: read / search / run]
E --> P{planning without consulting?}
P -->|yes| R[one reminder injected]
R --> A
P -->|no| A[ask_advisor]
A --> G{{gates: explore-first · follow-up budget}}
G --> M[advisor model<br>second model · ideas only]
M --> I[ideas · prior art · pitfalls · verification targets]
I --> L[main model plans and lands the work itself]
L --> D[draft reply]
D -->|annotation review| C[critic model<br>convergent red-lines]
C --> S[severity annotations anchored onto the draft]
S --> F[one-click send-back → final reply]
The two pipelines are deliberately role-separated:
divergent (pre-plan) convergent (post-draft)
──────────────────── ───────────────────────
advisor pipeline critic pipeline
ask_advisor annotation review
ideas · prior art · pitfalls red-lines · severity tiers
widens the solution space narrows the risk surface
directions, never steps falsifies output, never
the author's reasoning
What you get
ask_advisor tool — one synchronous consultation with the advisor
model, gated by an explore-first protocol and a bounded follow-up budget.
Guidance prompt section — the consultation protocol injected into the
system prompt (toggleable).
Annotation review (批注评审) — a per-reply button that runs the
convergent critic (default google/gemini-3.8-flash) over the draft and
anchors red-line annotations onto the reply text, with severity
underlines, badges, and a full review panel. Reviews persist across
restarts.
Native right-sidebar resources — reviews, historical evidence and
advisor records register as three dsh-resource:// resources and tab
bodies. The chat keeps the summary and badges; the sidebar shows the full
annotations, citations and advice items. A provider reads once and ends
its stream: no background watch, no polling, no model call, and a failed
resource never shows the last successful value.
Dedicated settings page — Settings → 夏尔 Ciel, after Agent presets in
the left navigation. Native switches and read-only tags; changes apply only
after Save, and unsaved drafts survive navigation. No duplicate plugin editor.
The screenshots below show the older settings and advisor cards. The current
UI uses a dedicated left-navigation settings page and native right-sidebar
resources; the latter has no published screenshot yet, and none is faked here.
The first inbox version gathers the current session's reviews into one list so you can mark your own intent per annotation. It is an inbox, not a repair action: an intent never drives a model, never edits the input draft, and never changes the review itself. The inbox passed isolated Web validation; acceptance in the daily profile remains pending.
Entry and scope: a left-sidebar panel-list entry (same id as the main panel, labelled "夏尔收件箱" (Ciel Inbox), count in the centre). It lists the currently selected session only; opening it, switching sessions or refreshing fetches a single page — no new resident polling or DOM observers, and the page caches only the current page plus a bounded cursor.
Paging and counts: at most 25 reviews per page (also the default), in the stable persisted hashed-filename order; counts and filters cover the current page only, never a cross-page total.
Intent: each annotation is pending (undecided) / planned (will handle) / rejected (not adopting for now), defaulting to pending. Intents live in their own new record (kind: inbox, one small record per review) and never reuse the legacy accept/dismiss checkboxes and never read or migrate old feedback state.
Write safety: inboxSetIntent must carry the server-issued content fingerprint reviewFingerprint and the review's revision; a mismatch fails explicitly (fingerprint_mismatch / revision_conflict) with no implicit reset, and stored state that no longer matches the current review is never masked as pending.
Zero model calls: listing and intent writes never call a model and never touch the draft; returned string summaries and annotation fields are bounded, and raw bodies, evidence text and source are never returned. Reading a review or its evidence still goes through the native right sidebar.
Limits: concurrent writes for one review are serialized in-process only (a module-level queue shared across service instances; across processes only the atomic rename window remains). Historical anchor location and loading are user-triggered and bounded, and automatic location is not guaranteed in this version; after a reviewFingerprint mismatch, recovery needs an explicit scheme — no implicit reset in this first version. Returning to a session opens reviews and evidence in the native right sidebar; this version does not offer a layout that keeps the centre panel and the right rail resident at the same time.
Install
dsh plugin --profile web add dsh-ciel
Restart DSH. The plugin activates globally: the ask_advisor tool and the
guidance section reach every agent in every preset; the dedicated page
appears under Settings → 夏尔 Ciel.
Upgrading from dsh-advisor (≤ 0.10.x)? Your advisor: section in
settings.yaml is copied into the new ciel namespace automatically on
first boot. The legacy section is left in place — remove it by hand
whenever you like.
Configuration
All fields live in the ciel settings namespace (the settings card or the
ciel: section of settings.yaml):
Field
Default
Description
provider
kimi-coding
Advisor provider route (must be registered under Settings → Models)
model
kimi-for-coding
Advisor model id; cross-family diversity pays most
reasoningEffort
provider
Thinking depth pinned onto each advisor request; provider follows the provider default
maxTokens
4096
Advisor reply length cap (256–32768)
maxCallsPerTurn
3
Consultations per turn: 1 divergence + follow-up budget
requireExploration
true
First consultation requires a prior non-advisor tool call
enforceFollowupGap
true
Follow-ups require independent work in between
planReminderEnabled
true
One reminder when planning starts unconsulted
guidanceEnabled
true
Inject the consultation protocol into the system prompt
criticProvider
google
Critic provider route (independent of the advisor pipeline)
criticModel
gemini-3.8-flash
Critic model id
criticEffort
medium
Thinking depth pinned onto critic requests; provider also accepted
enabled
true
Allow Ciel model calls and feedback; turning off cancels its in-flight consultations/reviews
advisorTimeoutSeconds
180
Total deadline per ask_advisor consultation, 10–600 seconds
criticExploreEnabled
true
Separate nomination and read-only verification phases
Review results and spending
Review feedback now stages text in the same session's input box; it never sends automatically. Existing text, reference chips and attachments stay intact. You edit and press Send yourself; staged annotations are not marked sent. If the input changes during preparation or the session switches, insertion is refused rather than overwriting anything. This requires DSH's scoped input-insert-text event; missing support fails closed, never falls back to automatic delivery.
Since 0.17.0, reviews have only a total-time execution budget (180 seconds by default). Queries and model requests are counted but never stop a review or withhold nominated suspects based on their count. Capture and both phases share one deadline without resetting it. Legacy criticExploreBudget / criticMaxRequests settings remain loadable but are ignored, including zero; only criticExploreEnabled controls file checking. No record in a turn-local digest is not proof that tests never ran; absent evidence and unrelated/older test reports must not be used to accuse fabrication.
Nomination sees only the request and draft; author evidence and advisor targets arrive during verification. A valid empty list means “not independently verified”, not a factual certification. Malformed responses fail explicitly. Unchecked suspects, missing/conflicting outcomes and legacy salvaged records remain visibly incomplete. Host-assigned suspect ids bind accepted annotations to selected defect outcomes; the host computes counts and the card summary, rejecting annotations on cleared or unchecked ids. Citations are model-authored evidence references, not programmatically verified truth; the author should check them before acting on feedback.
Review input is selected from human requests preceding the chosen draft. Correlated native compaction and goal continuations can preserve earlier requirements; forks never read later parent-session tasks. Generated summaries and goal prompts do not become human requirements. Missing links, truncation and image/attachment content omitted from the text review remain explicitly incomplete. See the input rules.
One review may run per session. Its Stop control cancels every phase. Deadline expiry stops the active work and records an incomplete/error outcome without an extra writer, automatic extension or retry. Normal completion, permission refusal and execution errors can still end work before the deadline. Since 0.18.0 the verification phase presents only the native reserved run_code: the critic program runs in Ciel's private worker + QuickJS/WASM and reaches the immutable in-memory snapshot only through JSON.parse(await tools.read/grep/glob(...)). grep is a literal search, the program body is TypeScript erasable syntax only, and missing capabilities fail closed instead of falling back to ordinary file tools. See restricted PTC review.
A time limit is not a money budget. Both phases, follow-up generations after tools and repeated input context incur model usage. Output limits are per request, not an aggregate token cap; DSH provider retries may add attempts. Cancellation cannot refund consumed tokens. Use enabled: false to stop Ciel calls, or criticExploreEnabled: false to disable file checking only (model calls still occur); previously delivered feedback turns running in the author are not cancelled by this switch.
The dedicated page separates the global switch, common settings and advanced controls. Save submits one atomic revision-fenced mutation; navigation retains drafts, page reload never saves them, and newer external settings cannot be silently overwritten. Current-status tags show persisted values; staged previews are explicitly marked pending. Advisor and review cards retain per-call model provenance; missing historical identities are never inferred from current settings.
File verification uses a bounded immutable source snapshot of the current session's working directory. Advanced criticAdditionalRoots (default []) explicitly adds other source directories. Ordinary tool output remains available; suspected credentials/private process evidence is withheld and coverage becomes incomplete. Detection is heuristic, not proof that every secret is absent. See read isolation and model provenance.
Restricted PTC is not a general sandbox. The critic program has no ambient Node globals and cannot directly read live files, spawn processes, use the network or read session history; the root codeRuntime is unchanged, and missing capabilities fail the tooled phase instead of falling back. The private registry keeps DSH's nested scheduling and log format, with Ciel's own guard owning scope and deadline; isolated private tools/result events do not reach root observers, so not every global policy plugin applies to the review child. The program receives host-clipped receipts, but the model context only sees the summary and snippets the program prints or returns — do not read "the program saw it" as "the model saw every file". Native DSH child-session logs may still retain every nested query, so the Ciel snippet/record bounds are not a global trace-free promise.
Records and evidence storage
These bounds apply to Ciel-owned extra records. DSH may still retain native advisor/reviewer session logs, including unselected reads. Clearing Ciel records does not remove those sessions and does not promise global trace-free execution.
New records are written only under the versioned root
$DSH_HOME/ciel/v1/<kind>/<sessionId>/<hash(id)>.json, where kind is
reviews / evidence / advice / inbox (calls / feedback reserved). Each
record envelope carries schemaVersion, kind, sessionId, id and
value; a random wx temp file is atomically renamed over the same-key
target. Directories are 0700 and files 0600, a single record is capped at
512 KiB. Review lists use cursor pages of at most 200 records / 16 MiB (default 100), with explicit continuation; malformed data still fails explicitly. Triage is one serialized record per review, not one file per click. Reads verify session/record ownership, refuse
symlinks, hard links and non-regular files, and check size/identity before
and after the read. Legacy $DSH_HOME/dsh-advisor/ JSONL history is
neither migrated nor read; the ciel settings namespace is preserved.
The host assigns e1, e2, … ids to real read / grep / glob
results; groundReview accepts only ids actually present in that run's
ledger, and a forged, foreign or unreturned id invalidates the citation (the
suspect falls back to unchecked). Stored snippets are bounded: 16 KiB / 200
lines per record by default and 128 KiB / 128 records per review in total.
The model sees exactly the bytes that were stored, and the full in-memory
copy is released when the review ends. contentSha256 is a consistency
check — it does not prove tamper-resistance and does not make a citation
true.
a1 is the "author-provided tool output" provenance marker: it records only
that the source existed, stores no raw text, and therefore makes coverage
incomplete. Sensitive-content checks run before the model input and again
before storage; both are heuristic and cannot prove that every secret is
absent. Obvious placeholders (…, ..., <token>, YOUR_API_KEY,
changeme, [redacted], ${ACCESS_TOKEN}, including forms wrapped in
backticks, brackets, or list punctuation) are told apart from real
credential shapes so documentation examples do not block a review; real shapes
(credential values of 8+ characters, known key prefixes, private-key blocks,
URLs carrying a user and password, Bearer/Basic) are still refused. readEvidence reads historical snippets only through the
evidenceIds committed in a review; a missing or unavailable record fails
explicitly and never falls back to the current file. The current file can
only be opened through the Host-resolved currentPath.
Current-file navigation always retains the evidence-owning Session, including external absolute paths. Switch Markdown previews to code or plain text for source-line navigation; historical line numbers may no longer match current content. When two panes do not fit, comparison opens a single-column file tab; expand the native sidebar to fullscreen before comparing side by side.
Compatibility
The native UI requires DSH 0.1.5-alpha.2 or newer: settings.section,
the shared platform Switch/Tag/Button, native resources and right-sidebar
services, without copied components or styles and without extra file
permissions. Safe model calls still require tools.guard() and Typert
Remote; missing guards refuse calls instead of silently running unmetered.
Legacy dsh-advisor reviews are no longer read; ciel settings are kept.
Node.js ^22.19.0 or >=24.0.0. File capture currently requires Linux
and accessible procfs descriptor APIs. Reviews also require the shared
dsh-subagent/dsh-llm/dsh-tools APIs corresponding to 0.1.5-alpha.2
(dsh-tools powers restricted PTC) and pin quickjs-emscripten 0.32.0;
unavailable dependencies refuse reviews rather than falling back to ordinary
file tools.
Designed to coexist with omdsh-dev/dsh-advisor:
the settings namespace moved to ciel in 0.11.0 so both plugins can be
installed side by side.
Development
A separate profile or port does not isolate session history. Test servers sharing DSH_HOME still populate the main GUI's session store and Ungrouped list. Browser A/B requires the test server itself to use a separate DSH_HOME; setting it only on the driver is not isolation. Do not run browser evaluations against the main GUI.
Prefer verify-runtime.mjs below: it creates and cleans up a temporary DSH_HOME, without leaving sidebar test sessions. DSH already hides Ciel's subagent-origin child sessions; ordinary user conversations must not be hidden alongside them.
The repository root is a private development package
(dsh-ciel-development) that provides esbuild and the official
@deepseek-ai/dsh-util-workspace-path; the root pnpm-workspace.yaml
contains only the root package, so plugin dependencies install separately.
Browser sources live under plugin/src/ (UI, state, progress, anchors and transport)
(plus sidebar.css), bundled into the single plugin/client.js by
scripts/build-client.mjs:
pnpm install
pnpm --dir plugin install --frozen-lockfile=false
node scripts/build-client.mjs --check # verify client.js is current; rebuild with pnpm build:client
Run keyless regression tests with node --test plugin/test/*.test.js from
the root, or node --test inside plugin/ (no network). Replay the real DSH
agent/tool chain without starting Web:
Verify the native right sidebar against the target DSH checkout (run from
inside that checkout, which supplies React/JSDOM and the real resource and
sidebar registries):
0.19.0 validation (2026-09-19): 605/605 unit tests and 52/52 actual DSH 0.1.6-alpha.2 restricted-runtime scenarios (scripted models, zero network). An isolated real Web profile also passed review/inbox, fork, refresh, protocol-failure, theme and unload checks on Node 24.21.0. See the repository architecture and architecture-decisions documents for module ownership, inactive-session cache limits and unsupported multi-process writes. The daily profile has not been restarted for acceptance.
Historical 0.18.0 restricted PTC review: the default PTC execution chain passed 37/37 (0 failed, 0 network; the chain tests used scripted models and ran no additional real-model review or A/B tests), unit tests 428/428 (including the runtime 15 subset), Chromium fixtures 22/22 (0 page/console errors, 0 network), the native SettingsRoot regression (0 network/model) and client --check against source. The host change needs a DSH restart plus a page refresh (manual restart preferred); the formal instance still awaits manual GUI acceptance for 0.18.0. Test network 0 describes the tests only and does not mean the whole development task had no real-model calls. Candidate package smoke 18/18 (12 files unpacked, production-only install, real QuickJS Promise batch/.then/for-await from /tmp, module-relative worker resolution); with a cold cache --prefer-offline may pull dependency packages, so pack/install is not guaranteed network-free; tested only on Node 24.20.0, the Node 22.19 minimum is untested. See restricted PTC review.
Historical 0.17.0 validation (time-only, still native readers): 390 unit tests, 22 real DSH offline execution-chain scenarios, 22 Chromium fixture checks, and the native settings regression passed. The shared deadline includes source capture and both stages, without an extra model after timeout. That record does not mean 0.18.0 is deployed.
Historical 0.16.1 validation: 381 unit tests, 23 real execution-chain scenarios (including placeholder pass-through and real-token refusal), 21 native-sidebar checks, 19 real-Chromium fixture checks, and the native settings regression all passed. After the human upgrade to alpha.2, a second instance with an isolated DSH_HOME additionally passed real-browser checks: token→cookie authentication and refresh, Ciel activation, read-only paged RPC, native settings controls, right-sidebar mounting for a blank session, and /advise registration, with zero page errors and zero model prompts. That instance used synthetic records and isolated state, so it is not formal-instance acceptance. Real-session annotation/evidence/current-file interaction on the formal instance still needs manual checking.
CI installs root dependencies, runs build-client.mjs --check, and adds
an independent integration job pinned to an upstream commit.
For explicitly authorized live tests, add --live to verify-runtime.mjs
and supply CIEL_ALLOW_PAID_TESTS=1 and DEEPSEEK_API_KEY through the
environment. The driver pins deepseek-v4-flash-vision-exp and rejects other
network destinations. Never place keys in arguments or source. --live is not run by default.
The browser A/B driver requires explicit CIEL_ALLOW_PAID_TESTS=1, CIEL_AB_MODEL, and CIEL_AB_CRITIC_PROVIDER (optionally CIEL_AB_CRITIC_MODEL), and refuses ambiguous model/message identity. It regenerates author drafts, so its results are diagnostic observations, not a controlled model ranking; prefer fixed-fixture regressions.
After a local pnpm install inside plugin/, run
scripts/relink-dev.sh once: the two @deepseek-ai/* devDependencies
(cordis, typert-protocol) and available review peers (dsh-subagent, dsh-llm) use the profile's shared
copies — a real second copy carries its own registry state and breaks the
linked plugin. npm-installed deployments are unaffected (devDependencies
are never installed for consumers).
