feat(designer): Agentic Workflow Designer#18
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…r.ts resolveModelRouting (gateway/format resolution incl. tools->Responses promotion), executeToolCore (headless load_skill/builtin/MCP dispatch), and capToolResult move to src/agent-runner.ts so the upcoming workflow engine can reuse them. getAllToolDefs gains an optional allowlist param (narrowing only) for per-cell tool selection; renderQuestionCard gains an optional container. Chat behavior unchanged. Co-authored-by: Isaac
Visual node-based workflow designer (sidebar button above Profile, Cmd+D). Cells select a model + per-cell tool subset + prompt; flow edges pipe outputs downstream with labeled multi-input joins; dashed feedback edges create bounded revision loops driven by a forced route_output verdict tool on gate cells. Sequential execution through the existing chat IPC; budgets (40 inner / 5 feedback / 25 global) guard against runaway loops. Workflows persist to ~/.mason/workflows. Includes the Spec → Implement → Test → Review template. Co-authored-by: Isaac
…e pressure Loops were already bounded (5 revisions per cell, 25 cell runs global, gatekeeper forces a terminal route on exhaustion) but invisibly so. Now: feedback-target cells show an editable revision cap (1-20) on the card; status pills show loop progress (running 3/5); gates see 'revision N of M' annotations on revised inputs plus per-route budget state and an explicit don't-chase-perfection instruction. Verified against a critic prompted to never be satisfied: forced to route end after the cap, 4 cell runs. Co-authored-by: Isaac
Co-authored-by: Isaac
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Summary
Adds the Agentic Workflow Designer — a visual, node-based canvas (n8n-style) for composing multi-model agentic pipelines, per the engineering spec in
docs/specs/agentic-workflow-designer.md(included in this PR).What's in it
Designer UI (
src/designer.ts, hand-rolled DOM + SVG — no new deps)Cmd+D) swaps the chat pane for a pannable/zoomable dot-grid canvasEngine (
src/workflow-engine.ts)## Input from "spec"sections); fan-out/fan-inroute_outputtool (enum of outgoing edges +end) — works on every tool-capable Gateway model, no JSON-in-prose parsingPhase 0 refactor (
src/agent-runner.ts)resolveModelRouting+executeToolCore+capToolResultextracted fromchat.tsso chat and the engine share one implementation;getAllToolDefs(allowlist?)for per-cell narrowing. Chat behavior unchanged.Persistence:
~/.mason/workflows/<id>.jsonvia 4 new IPC handlers (mirrors chat history; atomic temp+rename writes, id sanitization). Autosave every 10s.Verified
tscstrict typecheck cleanend; 4 cell runs, correct statuses/verdicts/transcriptsTest plan
npm start→ Workflow Designer button above Profile opens the canvas