feat(capabilities): add claude-orchestration capability (Workflow backend) (#1143)

Default-off, BETA, claude-only capability adopting Claude Code's Workflow tool
(/effort ultracode, Agent SDK >= v0.3.149) as an optional parallel-execution
backend for the GSD loop. Restores the wave parallelism + plan-checker + verifier
that #853 forces inline on Claude Code, and folds gsd-ultraplan-phase under one
runtime gate.

- Pure fail-closed core (src/claude-orchestration.cts): detectWorkflowBackend
  (gate ladder: enabled -> Claude -> backend != inline -> nested+background host
  -> valid Agent SDK -> SDK >= floor; every miss degrades to inline) and
  emitWorkflowScript (waves -> parallel() barriers, plans -> gsd-executor +
  worktree, files_modified overlap -> separate stages, resumeFromRunId, budget).
  All interpolated identifiers validated script-safe; briefs JSON-quoted.
- claude-orchestration command family (gsd-tools claude-orchestration
  detect-backend|emit-workflow) for orchestrator invocation.
- Two gated loop contributions at wired points (execute:wave:post, plan:post);
  federated config keys (enabled/execution_backend/min_agent_sdk_version).
- ADR-1143 implementation amendment; CONTEXT.md glossary entry; explanation doc.

On any runtime lacking the Workflow tool, behaviour is byte-identical to today.

closes #1143
This commit is contained in:
Tom Boucher
2026-07-06 15:18:23 -04:00
parent d01eec4358
commit e3262d94d3
19 changed files with 2357 additions and 9 deletions

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/**
* Claude orchestration command router — CLI dispatcher for
* `gsd-tools claude-orchestration <subcommand>`.
*
* #1143 — thin CLI adapter over the pure `claude-orchestration.cjs` module.
* Lets execute-phase (or any orchestrator) invoke the Workflow-backend
* detection and the Workflow-script emitter through the standard capability
* command surface (ADR-959) instead of a bare `require()`.
*
* Router signature: { args, cwd, raw, error } — identical to the other host
* routers; discovered by dispatchCapabilityCommand via the registry's
* commandFamilies index.
*
* Subcommands:
* detect-backend [--runtime <id>] [--agent-sdk-version <ver>] [--no-nested-dispatch]
* Resolves whether the Workflow backend should activate. `--runtime`
* defaults to the GSD_RUNTIME env var (or 'unknown'). Reads the
* `claude_orchestration.*` keys from .planning/config.json. Emits
* { available, backend, reason }.
*
* emit-workflow --waves <path> --run-id <id> [--phase-dir <dir>] [--budget <n>]
* Reads a wave/plan manifest JSON file and emits the generated Workflow
* script + summary. The manifest shape matches emitWorkflowScript's input:
* { waves: [{ id, plans: [{ id, brief, files_modified: string[] }] }] }.
*/
import fs from 'node:fs';
import path from 'node:path';
// eslint-disable-next-line @typescript-eslint/no-require-imports
import io = require('./io.cjs');
// eslint-disable-next-line @typescript-eslint/no-require-imports
import core = require('./claude-orchestration.cjs');
// eslint-disable-next-line @typescript-eslint/no-require-imports
import configLoader = require('./config-loader.cjs');
const { output } = io;
const { detectWorkflowBackend, emitWorkflowScript } = core;
const CAPABLE_HOST = { dispatch: { nested: true, background: true } };
interface RouterOpts {
args: string[];
cwd: string;
raw: boolean;
error: (msg: string, reason?: string) => void;
}
function usage(error: (msg: string, reason?: string) => void): void {
error(
'Usage: gsd-tools claude-orchestration <detect-backend|emit-workflow> [...]\n' +
' detect-backend [--runtime <id>] [--agent-sdk-version <ver>] [--no-nested-dispatch]\n' +
' emit-workflow --waves <path> --run-id <id> [--phase-dir <dir>] [--budget <n>]',
);
}
function argValue(args: string[], flag: string): string | undefined {
const i = args.indexOf(flag);
return i !== -1 && i + 1 < args.length ? args[i + 1] : undefined;
}
/**
* Detect whether the Workflow backend should activate for the current/given
* runtime. Reads `claude_orchestration.*` from the project config; runtime and
* SDK version come from flags (the orchestrator already knows these) or env.
*/
function cmdDetectBackend(args: string[], cwd: string, raw: boolean): void {
const runtimeId = argValue(args, '--runtime') || process.env['GSD_RUNTIME'] || 'unknown';
const agentSdkVersion = argValue(args, '--agent-sdk-version');
const noNested = args.includes('--no-nested-dispatch');
const hostIntegration = noNested ? { dispatch: { nested: false, background: true } } : CAPABLE_HOST;
// Resolve the claude_orchestration.* slice from the project config (federated
// keys are merged by loadConfig as a nested object). A config read failure
// degrades to inline — it must not break the core loop.
let claudeSlice: Record<string, unknown> = {};
try {
const loaded = configLoader.loadConfig(cwd);
const slice = loaded['claude_orchestration'];
if (slice && typeof slice === 'object' && !Array.isArray(slice)) {
claudeSlice = slice as Record<string, unknown>;
}
} catch {
claudeSlice = {};
}
// Flatten the nested slice into the dotted-key shape detectWorkflowBackend expects.
const flatConfig: Record<string, unknown> = {};
for (const k of Object.keys(claudeSlice)) {
flatConfig['claude_orchestration.' + k] = claudeSlice[k];
}
const result = detectWorkflowBackend({ runtimeId, hostIntegration, config: flatConfig, agentSdkVersion });
output(result, raw);
}
/**
* Emit a Workflow script from a wave/plan manifest file.
*/
function cmdEmitWorkflow(args: string[], _cwd: string, raw: boolean, error: (msg: string, reason?: string) => void): void {
const wavesPath = argValue(args, '--waves');
const runId = argValue(args, '--run-id');
const phaseDir = argValue(args, '--phase-dir') || '.planning/phases/current';
const budgetRaw = argValue(args, '--budget');
if (!wavesPath) {
error('emit-workflow requires --waves <path>');
return;
}
if (!runId) {
error('emit-workflow requires --run-id <id>');
return;
}
let waves: unknown;
try {
const content = fs.readFileSync(path.resolve(wavesPath), 'utf8');
const parsed = JSON.parse(content) as Record<string, unknown>;
waves = parsed['waves'];
} catch (e) {
error('emit-workflow: could not read/parse --waves file "' + wavesPath + '": ' + (e instanceof Error ? e.message : String(e)));
return;
}
const budgetTokens = budgetRaw !== undefined ? parseInt(budgetRaw, 10) : undefined;
const budget = (typeof budgetTokens === 'number' && !Number.isNaN(budgetTokens)) ? budgetTokens : undefined;
const result = emitWorkflowScript({
phaseDir,
runId,
waves: waves as EmitInput['waves'],
budgetTokens: budget,
});
if (!result.ok) {
error('emit-workflow: ' + result.reason);
return;
}
output({ script: result.script, summary: result.summary }, raw);
}
// Re-declared minimal input type for the cast above (avoids importing private types).
interface EmitInput {
waves: Array<{ id: string; plans: Array<{ id: string; brief: string; files_modified: string[] }> }>;
}
function routeClaudeOrchestrationCommand(opts: RouterOpts): void {
const { args, cwd, raw, error } = opts;
// args[0] is the family ('claude-orchestration'); the subcommand is args[1].
const subcommand = args[1];
if (subcommand === 'detect-backend') {
cmdDetectBackend(args, cwd, raw);
} else if (subcommand === 'emit-workflow') {
cmdEmitWorkflow(args, cwd, raw, error);
} else {
usage(error);
}
}
export = { routeClaudeOrchestrationCommand };

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/**
* Claude Orchestration Capability — Workflow-tool backend detection + emitter
*
* #1143 — adopts Claude Code's Workflow tool (the engine behind `/effort ultracode`)
* as an optional, runtime-gated parallel-execution backend for the GSD loop.
*
* This module is the pure, testable core of the capability. It owns two seams:
*
* detectWorkflowBackend({ runtimeId, hostIntegration, config, agentSdkVersion })
* → { available: boolean, backend: 'workflow'|'inline', reason: string }
* Fail-closed: every miss degrades to `inline` (today's behaviour), so the
* core loop is byte-identical unless every gate opens. This is criteria 3 + 6.
*
* emitWorkflowScript({ phaseDir, waves, runId, budgetTokens? })
* → { ok:true, script, summary } | { ok:false, reason }
* Maps GSD's wave/plan model 1:1 onto Workflow primitives:
* wave → sequential `parallel()` stage barriers,
* plan → `agent(brief, { agentType:'gsd-executor', isolation:'worktree' })`,
* files_modified overlap → forces plans into separate sequential stages
* (the same overlap rule execute-phase already applies inline),
* resumeFromRunId → wired to the phase run id,
* budgetTokens → a shared token pool.
* The emitted script composes the SAME gsd-executor agent and worktree
* isolation the inline path uses, so it produces the same artifacts/commits
* (criterion 2). It is a generated string consumed by the orchestrator; this
* module never invokes the Workflow tool itself.
*
* Design laws:
* - Gall's Law: ship a small working slice that composes existing primitives
* (gsd-executor + worktree isolation) rather than reinventing them.
* - Greenspun's Tenth Rule (cited in #1143): adopt the Workflow tool's
* barrier/pipeline/budget/resume semantics instead of hand-rolling them.
* - Postel's Law: liberal in input (missing fields → inline), conservative in
* output (workflow only when every gate opens).
* - Fail-closed: an unknown version, a missing descriptor, or a disabled
* toggle all resolve to `inline`, never to `workflow`.
*
* Zero external dependencies. Pure functions. Never throws on bad input.
*/
// ─── Constants ────────────────────────────────────────────────────────────────
/**
* The Agent SDK version that introduced the Workflow tool (#1143 prior art).
* Used as the default floor when config does not override it. A runtime reporting
* an agentSdkVersion below this cannot host the Workflow backend.
*/
const WORKFLOW_TOOL_FLOOR_VERSION = '0.3.149';
/** Closed enum for the `claude_orchestration.execution_backend` config key. */
const BACKEND_VALUES = new Set<string>(['auto', 'workflow', 'inline']);
/** Only this runtime can host the Workflow tool (Claude Code / Agent SDK). */
const WORKFLOW_RUNTIME = 'claude';
// ─── Semver helpers ───────────────────────────────────────────────────────────
/** Official-ish strict SemVer 2.0.0 numeric triple (+ optional pre/build). */
const SEMVER_RE = /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-[0-9A-Za-z.-]+)?(?:\+[0-9A-Za-z.-]+)?$/;
/** True for a syntactically valid semver string. */
function isValidSemver(s: unknown): s is string {
return typeof s === 'string' && SEMVER_RE.test(s);
}
/**
* Compare two semver strings.
* Returns -1/0/1 in the usual sense. Garbage in either position → -1 (fail-closed:
* an unparseable version is treated as "less than" any real floor, so detection
* never accidentally enables the preview backend on an unknown SDK).
*
* Pre-release/build metadata are ignored for the comparison — only the numeric
* major.minor.patch triple participates, matching how the Workflow-tool floor is
* specified (a plain "0.3.149").
*/
function compareSemver(a: string, b: string): number {
if (!isValidSemver(a) || !isValidSemver(b)) return -1;
// Split numeric triple from pre-release/build metadata.
const parseTriple = (s: string): number[] => {
const core = s.split('-')[0].split('+')[0].split('.');
return [parseInt(core[0], 10), parseInt(core[1], 10), parseInt(core[2], 10)];
};
const hasPre = (s: string): boolean => s.indexOf('-') !== -1;
const am = parseTriple(a);
const bm = parseTriple(b);
for (let i = 0; i < 3; i++) {
if (am[i] < bm[i]) return -1;
if (am[i] > bm[i]) return 1;
}
// Numeric triple is equal. SemVer 2.0.0 precedence: a version WITH a pre-release
// tag is LOWER than the same triple WITHOUT one. This keeps the floor fail-closed
// for pre-release builds of the floor (e.g. 0.3.149-rc.1 < 0.3.149 → inline).
const aPre = hasPre(a);
const bPre = hasPre(b);
if (aPre && !bPre) return -1;
if (!aPre && bPre) return 1;
return 0;
}
// ─── detectWorkflowBackend ────────────────────────────────────────────────────
interface HostIntegration {
dispatch?: {
nested?: boolean;
background?: boolean;
backgroundDispatch?: boolean;
[k: string]: unknown;
};
[k: string]: unknown;
}
interface BackendConfig {
'claude_orchestration.enabled'?: unknown;
'claude_orchestration.execution_backend'?: unknown;
'claude_orchestration.min_agent_sdk_version'?: unknown;
[k: string]: unknown;
}
interface DetectInput {
runtimeId?: string;
hostIntegration?: HostIntegration | null;
config?: BackendConfig | null;
agentSdkVersion?: string;
}
interface DetectResult {
available: boolean;
backend: 'workflow' | 'inline';
reason: string;
}
/** Inline result shorthand. */
function inline(reason: string, available = false): DetectResult {
return { available, backend: 'inline', reason };
}
/**
* Resolve whether the Workflow-tool backend should activate.
*
* Gate ladder (all must pass for `workflow`; first miss wins, fail-closed):
* 1. capability enabled (claude_orchestration.enabled truthy)
* 2. runtime is Claude (the only runtime that exposes the Workflow tool)
* 3. execution_backend !== 'inline'
* 4. host descriptor signals nested+background dispatch (Workflow-tool capable)
* 5. agentSdkVersion is a known, valid semver
* 6. agentSdkVersion >= the configured floor (default WORKFLOW_TOOL_FLOOR_VERSION)
* 7. execution_backend === 'workflow' OR 'auto' (both reach here; 'inline' exited at 3)
*
* Never throws. Destructures defensively.
*/
function detectWorkflowBackend(input: DetectInput | null | undefined): DetectResult {
if (input === null || input === undefined || typeof input !== 'object') {
return inline('capability_disabled');
}
const cfg: BackendConfig =
(input.config !== null && input.config !== undefined && typeof input.config === 'object')
? input.config
: {};
// 1. capability must be opted in (default-off — ships disabled).
if (!cfg['claude_orchestration.enabled']) {
return inline('capability_disabled');
}
// 2. only Claude can host the Workflow tool.
if (input.runtimeId !== WORKFLOW_RUNTIME) {
return inline('runtime_not_claude');
}
// 3. explicit inline opt-out short-circuits.
let backendRaw = cfg['claude_orchestration.execution_backend'];
if (typeof backendRaw !== 'string' || !BACKEND_VALUES.has(backendRaw)) {
backendRaw = 'auto';
}
if (backendRaw === 'inline') {
return inline('backend_inline');
}
// 4. the host dispatch descriptor must be the nesting-capable Claude-Code shape
// (a proxy for Workflow-tool presence). This is Claude-specific and already
// gated at step 2; `background:true` alone is true on several non-Claude hosts,
// so the proxy is only meaningful after the runtime check above. Note: this is
// NOT the canonical `shouldFlattenDispatch` rule (which keys on
// `backgroundDispatch`); the Workflow backend works precisely because a single
// tool-call orchestrates internally, sidestepping the backgroundDispatch:false
// limitation. Missing/false/foreign descriptor → fail-closed.
const hi = input.hostIntegration;
if (hi === null || hi === undefined || typeof hi !== 'object' || Array.isArray(hi)) {
return inline('workflow_tool_unavailable');
}
const dispatch = (hi as { dispatch?: Record<string, unknown> }).dispatch;
if (typeof dispatch !== 'object' || dispatch === null || Array.isArray(dispatch)) {
return inline('workflow_tool_unavailable');
}
const nested = dispatch['nested'];
const background = dispatch['background'];
if (nested !== true || background !== true) {
return inline('workflow_tool_unavailable');
}
// 5. an unknown agentSdkVersion cannot be trusted to meet the floor.
if (!isValidSemver(input.agentSdkVersion)) {
return inline('agent_sdk_version_unknown');
}
// 6. version floor (config override > default constant).
const floorRaw = cfg['claude_orchestration.min_agent_sdk_version'];
const floor = typeof floorRaw === 'string' && isValidSemver(floorRaw) ? floorRaw : WORKFLOW_TOOL_FLOOR_VERSION;
if (compareSemver(input.agentSdkVersion, floor) < 0) {
return inline('agent_sdk_version_below_floor');
}
// 7. auto/workflow both reach the workflow backend once every gate passes.
return { available: true, backend: 'workflow', reason: 'workflow_backend_active' };
}
// ─── emitWorkflowScript ───────────────────────────────────────────────────────
interface Plan {
id: string;
brief: string;
files_modified: string[];
}
interface Wave {
id: string;
plans: Plan[];
}
interface EmitInput {
phaseDir: string;
waves: Wave[];
runId: string;
budgetTokens?: number;
}
interface EmitOk {
ok: true;
script: string;
summary: {
waves: number;
plans: number;
stagesByWave: string[][][]; // wave → stage → planId[]
resumeRunId: string;
budgetTokens: number | null;
};
}
interface EmitErr {
ok: false;
reason: string;
}
/**
* Partition a wave's plans into the fewest sequential stages such that no two
* plans in the same stage share a modified file. Greedy first-fit: each plan
* goes into the earliest stage where it does not overlap any plan already there.
*
* This is the same overlap rule execute-phase applies inline — the only difference
* is the execution vehicle (Workflow `parallel()` vs one-agent-per-message).
*/
function partitionStages(plans: Plan[]): string[][] {
const stages: { plans: Plan[]; files: Set<string> }[] = [];
for (const plan of plans) {
const fileSet = new Set(plan.files_modified);
let placed = false;
for (const stage of stages) {
let overlap = false;
for (const f of fileSet) {
if (stage.files.has(f)) { overlap = true; break; }
}
if (!overlap) {
stage.plans.push(plan);
for (const f of fileSet) stage.files.add(f);
placed = true;
break;
}
}
if (!placed) {
stages.push({ plans: [plan], files: new Set(fileSet) });
}
}
return stages.map((s) => s.plans.map((p) => p.id));
}
/**
* Quote a free-text value for safe embedding as a JavaScript/Workflow double-quoted
* string literal. Uses JSON.stringify so every JS-relevant escape (backslash, quote,
* newline, tab, NUL, U+2028/U+2029, all control chars) is handled by the language
* itself — there is no hand-rolled escape table to drift. Returns the value already
* wrapped in its surrounding quotes.
*/
function quoteString(s: string): string {
return JSON.stringify(s);
}
/**
* True if `s` is a safe identifier/path token to interpolate into the generated
* script WITHOUT requiring a string-literal context — i.e. it contains no
* character that could terminate a comment line (`\n`/`\r`), break out of a
* string literal (`"` / `\`), or smuggle a NUL/control sequence. Used for
* `phaseDir`, `runId`, `wave.id`, and `plan.id`, which are identifiers/paths and
* must never legitimately contain such characters. Rejecting them at validation
* (rather than silently flattening) keeps the emitted script faithful to input.
*/
const UNSCRIPTABLE_CHAR_RE = /[\r\n"\\\x00-\x1f\x7f\u2028\u2029]/;
function isScriptableIdentifier(s: unknown): boolean {
if (typeof s !== 'string' || s.length === 0) return false;
return !UNSCRIPTABLE_CHAR_RE.test(s);
}
/**
* Emit a Workflow script mapping the phase's wave/plan model onto Workflow
* primitives. Pure and deterministic: identical input yields an identical string.
*
* Returns ok:false (never throws) on invalid input — empty waves, missing runId,
* a wave with no plans, etc.
*/
function emitWorkflowScript(input: EmitInput | null | undefined): EmitOk | EmitErr {
if (input === null || input === undefined || typeof input !== 'object') {
return { ok: false, reason: 'invalid_input' };
}
const { phaseDir, waves, runId } = input;
// Identifiers/paths interpolated into the generated script must be free of any
// character that could terminate a comment, break out of a string literal, or
// smuggle control bytes — reject up front (security: #1143 review Finding 1).
if (!isScriptableIdentifier(phaseDir)) {
return { ok: false, reason: 'phaseDir must be a non-empty string without newlines/quotes/backslash/control chars' };
}
if (!isScriptableIdentifier(runId)) {
return { ok: false, reason: 'runId must be a non-empty string without newlines/quotes/backslash/control chars' };
}
if (!Array.isArray(waves) || waves.length === 0) {
return { ok: false, reason: 'waves must be a non-empty array' };
}
for (let i = 0; i < waves.length; i++) {
const w = waves[i];
if (w === null || typeof w !== 'object' || typeof w.id !== 'string') {
return { ok: false, reason: 'waves[' + i + '] must be { id, plans: non-empty[] }' };
}
if (!isScriptableIdentifier(w.id)) {
return { ok: false, reason: 'waves[' + i + '].id must not contain newlines/quotes/backslash/control chars' };
}
if (!Array.isArray(w.plans) || w.plans.length === 0) {
return { ok: false, reason: 'waves[' + i + '] must have a non-empty plans array' };
}
const seenIds = new Set<string>();
for (let j = 0; j < w.plans.length; j++) {
const p = w.plans[j];
if (p === null || typeof p !== 'object' || typeof p.id !== 'string' || typeof p.brief !== 'string' || !Array.isArray(p.files_modified)) {
return { ok: false, reason: 'waves[' + i + '].plans[' + j + '] must be { id, brief, files_modified[] }' };
}
if (!isScriptableIdentifier(p.id)) {
return { ok: false, reason: 'waves[' + i + '].plans[' + j + '].id must not contain newlines/quotes/backslash/control chars' };
}
if (seenIds.has(p.id)) {
return { ok: false, reason: 'waves[' + i + '] has duplicate plan id "' + p.id + '"' };
}
seenIds.add(p.id);
for (const f of p.files_modified) {
if (typeof f !== 'string' || f.length === 0) {
return { ok: false, reason: 'waves[' + i + '].plans[' + j + '].files_modified entries must be non-empty strings' };
}
}
}
}
const budgetTokens = (typeof input.budgetTokens === 'number' && Number.isFinite(input.budgetTokens) && input.budgetTokens > 0)
? Math.floor(input.budgetTokens)
: null;
const lines: string[] = [];
lines.push('// GSD Workflow script — generated by the claude-orchestration capability (#1143)');
lines.push('// phase: ' + phaseDir);
lines.push('// BETA: preview-grade; on any failure the orchestrator falls back to inline dispatch.');
lines.push('// Composes the SAME gsd-executor agent + worktree isolation as the inline path,');
lines.push('// so artifacts (SUMMARY.md) and commits are produced identically.');
lines.push('resumeFromRunId(' + quoteString(runId) + ')');
if (budgetTokens !== null) {
lines.push('budget(' + budgetTokens + ')');
}
lines.push('');
const stagesByWave: string[][][] = [];
let totalPlans = 0;
for (let wi = 0; wi < waves.length; wi++) {
const wave = waves[wi];
const stages = partitionStages(wave.plans);
stagesByWave.push(stages);
totalPlans += wave.plans.length;
lines.push('// Wave ' + wave.id);
for (let si = 0; si < stages.length; si++) {
const stagePlanIds = stages[si];
// Resolve back to plan objects for briefs (ids are unique within a wave — validated above).
const stagePlans = stagePlanIds.map((id) => wave.plans.find((p) => p.id === id) as Plan);
if (stages.length > 1) {
lines.push('// Stage ' + si + (si > 0 ? ' (sequential — files_modified overlap)' : ''));
}
if (stagePlans.length === 1) {
const p = stagePlans[0];
lines.push('parallel(');
lines.push(' agent(' + quoteString(p.brief) + ', { agentType: "gsd-executor", isolation: "worktree" })');
lines.push(')');
} else {
lines.push('parallel(');
for (const p of stagePlans) {
lines.push(' agent(' + quoteString(p.brief) + ', { agentType: "gsd-executor", isolation: "worktree" }),');
}
// Replace trailing comma on the last agent line with nothing.
const lastIdx = lines.length - 1;
lines[lastIdx] = lines[lastIdx].replace(/,$/, '');
lines.push(')');
}
}
if (wi < waves.length - 1) lines.push('');
}
lines.push('// Each agent writes SUMMARY.md on its worktree branch; commits land there');
lines.push('// and are merged by the orchestrator exactly as in inline wave dispatch.');
const script = lines.join('\n');
return {
ok: true,
script,
summary: {
waves: waves.length,
plans: totalPlans,
stagesByWave,
resumeRunId: runId,
budgetTokens,
},
};
}
// ─── Exports ──────────────────────────────────────────────────────────────────
export = {
detectWorkflowBackend,
emitWorkflowScript,
compareSemver,
isValidSemver,
WORKFLOW_TOOL_FLOOR_VERSION,
BACKEND_VALUES,
WORKFLOW_RUNTIME,
};