* feat(#1517): support custom reviewer instances for /gsd:review Add a bounded review.reviewer_instances config surface so one model-capable adapter (e.g. opencode) can run as several independent reviewer identities in a single /gsd:review pass. Instances participate only via review.default_reviewers, expand before built-in slugs, are available iff their cli is detected, and a non-matching entry is a hard error (typo must be loud). >=2 same-cli instances emit a shared-adapter caveat in REVIEWS.md. Default path with no instances is byte-for-byte unchanged. Single-source instance->cli resolution lives in resolveReviewerSelection / normalizeReviewerInstances (parity-locked in tests/review-reviewer-instances.test.cjs). cli validated against KNOWN_REVIEWER_SLUGS only (never arbitrary shell); model/agent opaque, never shell-interpolated. Closes #1517 * chore(#1517): backfill changeset pr:1766 --------- Co-authored-by: review-bot <review-bot@gsd>
100 lines
4.8 KiB
Markdown
100 lines
4.8 KiB
Markdown
# Reviewer Instances (#1517)
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Custom reviewer instances for `/gsd:review`: run one model-capable adapter (e.g. OpenCode)
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as several independent reviewer identities in a single review pass. Loaded lazily by
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`gsd-core/workflows/review.md` when `review.reviewer_instances` is configured. See
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[ADR-1517](../docs/adr/1517-reviewer-instances-config-surface.md) for the contract.
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---
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## Config shape
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A `review.reviewer_instances` object under the `review` namespace. Each entry maps an
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instance name to `{ cli, model?, agent? }`:
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```json
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{
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"review": {
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"reviewer_instances": {
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"opencode-deepseek": { "cli": "opencode", "model": "deepseek/deepseek-v4-pro", "agent": "review" },
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"opencode-mimo": { "cli": "opencode", "model": "xiaomi/mimo-v2.5-pro" }
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},
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"default_reviewers": ["opencode-deepseek", "opencode-mimo", "codex"]
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}
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}
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```
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- Instance name: `^[a-z0-9][a-z0-9-]*$`, must not equal a built-in slug. Validated at
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`config-set` time.
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- `cli`: MUST be a known adapter (`KNOWN_REVIEWER_SLUGS`) — never an arbitrary shell command.
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- `model`: opaque `provider/model` string, passed through verbatim. GSD does not parse it.
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- `agent`: opaque string; honoured only by adapters with a native agent concept (OpenCode
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`--agent` in v1). Ignored by other adapters.
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---
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## Resolution rules (single source)
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The canonical logic lives in `resolveReviewerSelection` / `normalizeReviewerInstances` in
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`review-reviewer-selection.cjs`. Apply the SAME rules in the workflow so the two surfaces
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cannot diverge (`DEFECT.GENERATIVE-FIX`; parity-locked in
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`tests/review-reviewer-instances.test.cjs`).
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1. Instances participate ONLY via `review.default_reviewers`. They never appear under `--all`
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or explicit `--<cli>` flags, and there are no per-instance CLI flags.
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2. Expand instance references BEFORE the built-in-slug check: an entry that is a key in
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`review.reviewer_instances` is an **instance**; an entry that is a built-in slug is a
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**builtin**.
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3. An instance is **available** iff its base `cli` is detected (e.g. `opencode-deepseek` is
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available iff `opencode` is available).
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4. An entry that is NEITHER a defined instance NOR a built-in slug is a **hard error** (likely
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a typo'd instance name) — stop and report it. Do NOT silently drop it. (When
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`review.reviewer_instances` is absent entirely, fall back to the legacy unknown-slug
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warn-and-drop behaviour for backward compatibility.)
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5. `model`/`agent`/instance-name are opaque: pass them as separate argv elements. They are
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NEVER interpolated into shell strings.
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---
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## Invocation
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For each selected INSTANCE, invoke its base `cli` using the instance's own `model`/`agent` —
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NOT the global `review.models.<cli>`. Each instance writes to its OWN per-instance output file
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and runs as a distinct reviewer identity.
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For an OpenCode-backed instance (the motivating adapter):
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```bash
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# $INSTANCE_MODEL / $INSTANCE_AGENT come from the instance spec; $INSTANCE_NAME is the
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# reviewer identity (e.g. opencode-deepseek). --agent is OpenCode's native subagent flag;
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# omit it when the instance has no agent.
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if [ -n "$INSTANCE_AGENT" ] && [ "$INSTANCE_AGENT" != "null" ]; then
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cat /tmp/gsd-review-prompt-{phase}.md | opencode run --model "$INSTANCE_MODEL" --agent "$INSTANCE_AGENT" - 2>/dev/null > /tmp/gsd-review-${INSTANCE_NAME}-{phase}.md
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else
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cat /tmp/gsd-review-prompt-{phase}.md | opencode run --model "$INSTANCE_MODEL" - 2>/dev/null > /tmp/gsd-review-${INSTANCE_NAME}-{phase}.md
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fi
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if [ ! -s /tmp/gsd-review-${INSTANCE_NAME}-{phase}.md ]; then
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echo "OpenCode review ($INSTANCE_NAME) failed or returned empty output." > /tmp/gsd-review-${INSTANCE_NAME}-{phase}.md
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fi
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```
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For an instance backed by a DIFFERENT cli, reuse that cli's invocation block with two
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substitutions: use the instance's `model` in place of the global `review.models.<cli>` value,
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and write to `/tmp/gsd-review-${INSTANCE_NAME}-{phase}.md`. Only `opencode` honours an
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`agent` field in v1; ignore `agent` for other adapters.
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---
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## REVIEWS.md contract
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- **Frontmatter `reviewers:`** records the actual identities invoked. For a built-in slug use
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the slug (`opencode`); for an instance use the instance name (`opencode-deepseek`), so
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frontmatter distinguishes the independent voices. Example:
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`reviewers: [opencode-deepseek, opencode-mimo, codex]`.
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- **Section headers:** each instance gets its OWN top-level section, headed with the base
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adapter's display name plus the instance name in parentheses:
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`## OpenCode Review (opencode-deepseek)`. Same-cli instances are never collapsed.
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- **Shared-adapter caveat:** when ≥2 invoked instances share the same base `cli`, print a
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one-line caveat immediately after the frontmatter (before the first section), e.g.:
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`> Note: opencode-deepseek and opencode-mimo share the opencode adapter; their consensus is cross-model, not cross-tool.`
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