One panel's whole world in one call: effective config in, echoed config + cascade result + undirected edge list out. Edges are [from, to] pairs with from < to in deterministic node order; Graph.Edges() walks the adjacency once, GraphEdges(config) rebuilds the seeded world (~25us) so Result stays lean and /api/comparison stays untouched. This closes the topology gap the design brief flagged; the frontend's seeded d3-force layout consumes these pairs. Go bits: [][2]int is a slice of fixed-size arrays; [2]int is a value type, comparable, and JSON-marshals to [a, b], exactly the wire shape the spec asks for. tygo regen includes a fix: engine.Strategy now maps to the generated Strategy type instead of decaying to 'any' in ScenarioRequest. Verified live through the dev stack: 7/120 reached, 351 edges.
81 lines
4.4 KiB
Markdown
81 lines
4.4 KiB
Markdown
# Handoff: milestone 3 implementation (from the UI design session)
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You wrote `docs/ui-design-brief.md` and asked for a design session. It ran on
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2026-06-10, every decision made with Justin via AskUserQuestion, and it is
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done: nothing UI-shaped is left open. This doc tells you what exists now,
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what changed relative to your milestone 3 assumptions, and where to start.
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## What exists now
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- `docs/ui-spec.md` is the normative spec. Page layout with wireframe,
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component tree, every interaction with trigger/behavior/states, API
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requirements, visual tokens for both themes, a testable accessibility
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checklist, 12 ordered implementation slices, and one-line rejected
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alternatives. Build from it without re-deciding; if you disagree with
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something, raise it with Justin, do not silently deviate.
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- `docs/mockup/index.html` is the approved visual reference (v2; Justin
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rejected v1 outright). It is a design artifact with stand-in layout and
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edges, not app code. To view: bake a live `/api/comparison` response into
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it (replace `__DATA__`, see `data.json` + `rendered.html` already there),
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open in a browser, `?dark` for the dark theme, narrow window for mobile.
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Match its look; do not port its code.
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## Deltas against what you probably assumed for milestone 3
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- The dashboard is not the fixed three-strategy comparison. Panels are a
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dynamic list (cap 6) of scenarios: one shared base `Config` plus sparse
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per-panel overrides and a strategy. The classic trio is just the default,
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loaded from a study preset module (`web/src/presets/deepfake-school.ts`)
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that owns all study copy, so no research question is hardcoded.
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- New endpoint needed, and it is slice 1, your Go territory:
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`POST /api/scenario` takes `{config, strategy}`, returns
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`{config, result, edges}` where `edges` is the deterministic topology as
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node-index pairs. This closes the topology gap flagged in the brief. The
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engine already has the graph; expose it. Same validation and 400-string
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behavior as comparison. tygo regen, determinism test on edges.
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`/api/comparison` stays as-is (parity table and external consumers).
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- The frontend fires one `/api/scenario` per panel in parallel, debounced
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400 ms, atomic swap, keep-last-good on errors. No batch endpoint
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(rejected, one-liner in the spec).
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- The optimisation feature (your milestone 5) got its API shape reserved:
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`POST /api/optimize` goal-seek, request/response sketched in spec
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section 2. M3 ships no optimizer UI, only a layout that can host it.
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- In scope for M3 beyond what the brief listed: export (JSON, per-node CSV,
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PNG snapshot), both light and dark themes with a toggle, and mobile as a
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first-class target (Justin expects first contact by phone). Animated
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GIF/WebM export is explicitly post-M3.
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- The accessibility criteria your locked decisions called UNDEFINED are now
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defined: spec section 8 is the checklist, and slice 12 is the audit.
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- Pinia and Vue Router: decided not needed. Module-scope composable store,
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modal focus, one page.
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## Calls Justin made explicitly (do not relitigate)
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- Focus view is a modal overlay (recommendation was expand-in-place).
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- Sharing is address-bar-only, no Share button, no toast
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(`history.replaceState` after every successful run).
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- Both themes ship, not light-only.
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- Dynamic panels, export, and the optimizer hook all came from him
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unprompted; they are wanted, not gold-plating.
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## Method notes
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- Your working agreements stand: teaching-paced TDD on Go (slice 1 gets a
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micro-brief, failing test first, small annotated diffs, learning-log
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commit message); Vue/TS driven fast and mostly autonomously.
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- Justin's design bar is high. His words on the first mockup: "a very weak
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mishmash of elements"; he wants a clean, responsive SPA that "looks
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professional and feels amazing". The approved mockup is the bar: app
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shell, type scale, one card system, real SVG icons, consistent spacing.
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Never show him boxes-on-a-page, not even as an intermediate state demo.
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- Dev stack runs in the shared tmux session "spreadlab" (`./dev.sh`, API on
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:8080, Vite on :5173). Use it, do not spawn background tasks.
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- One shared percent formatter everywhere; the 82-vs-83 rounding mismatch
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already bit the mockup once (spec section 6).
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## First steps
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Read `docs/ui-spec.md` end to end, view the mockup in both themes and at
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phone width, then propose the slice 1 plan (the `/api/scenario` endpoint)
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and start the usual loop. Spec section 10 is the full M3 slice order; each
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slice leaves the app shippable.
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