MVP M8: background detection — assumptions, risks, inconsistencies

The editor now runs Socrates' three Phase-0-validated detection prompts
against the live model, persists the findings, and surfaces them in a
new FindingsPanel beside the IssuesPanel. Click any finding to focus its
linked element across rail + diagram. Re-detect after model edits to
refresh against the new state.

apps/web/lib/llm/prompts/socrates
- detect-assumptions.md / detect-risks.md / detect-inconsistencies.md
  promoted verbatim from phase-0 (Phase 0 corpus validated them 10/10).

apps/web/lib/llm/detect.ts
- Three sequential detection passes (parallel was OOM-prone on 4B local
  models — Phase 0 lesson). Each pass uses the Phase 0 JSON schema with
  jsonObjectMode fallback + chatJSON repair-retry. Fail-soft per pass:
  one busted pass returns [] rather than blowing up the whole detect.
- post-validate strips hallucinated element refs (drops findings whose
  refs ALL fail to resolve; keeps findings with zero refs since some
  inconsistencies are genuinely about absences).

apps/web/prisma/schema.prisma
- Finding table: kind / text / linkedElementIds (JSON) / confidence /
  severity / validationCode / status / modelVersion / provider / model.
- ResearchFinding table reserved for the Tavily integration that comes
  next — schema in place so we don't have to migrate again.

apps/web/lib/db/repo.ts
- listOpenFindings(projectId), replaceFindings(...) — replaceFindings
  wipes prior open findings in a transaction and writes the new set so
  re-detect doesn't accumulate stale findings.

apps/web/app/api/projects/[projectId]/findings/route.ts
- GET returns persisted open findings.
- POST runs detect, persists, returns findings + meta (provider, model,
  durationMs, strippedRefs, droppedFindings).

apps/web/components/editor/FindingsPanel.tsx
- New panel, anchored bottom-right just left of IssuesPanel. Shows
  count summary (asm / risk / inc), detect / re-detect button, list
  grouped by kind (inconsistencies first, then risks, then assumptions),
  per-finding glyph + tag + severity + confidence + linked refs.
- Click a finding row → focus its first linked element via the same
  setFocusBlockId path the rail and IssuesPanel already use.
- "stale" indicator when the model version has advanced past the one the
  findings were detected against.

EditorShell wires version + projectId through to FindingsPanel.

Smoke-tested end-to-end: 12 findings returned (5 asm / 4 risk / 3 inc),
0 hallucinated refs stripped, ~37s on local gemma-4-e4b. Sample
assumption "students are willing to engage with an AI tutor that is
programmed to refuse providing complete solutions" — specific to
Aristotle's refusal_policy, not a generic startup truism.

Deferred to follow-ups: inline rail/diagram badges from findings,
auto-detect-on-save, Tavily research, experiment modal.

apps/web/components/editor/EditorShell.tsx

@@ -11,6 +11,7 @@ import { LeftRail } from "./LeftRail";
 import { CanvasHeader } from "./CanvasHeader";
 import { StatusBar } from "./StatusBar";
 import { IssuesPanel } from "./IssuesPanel";
+import { FindingsPanel } from "./FindingsPanel";
 import { TextCanvas } from "../text-canvas/TextCanvas";
 import { DiagramCanvas, type DiagramVariant } from "../diagram-canvas/DiagramCanvas";
 import { SocratesDock, type Density, type SocratesPresence } from "../socrates/SocratesDock";
@@ -98,7 +99,7 @@ interface ShellBodyProps {
 
 function ShellBody({ data, projectId, density, markupStyle, diagramStyle, presence, breaks }: ShellBodyProps) {
   const [focusBlockId, setFocusBlockId] = useState<string | null>(null);
-  const { model, issues, issuesByElement } = useModelStore();
+  const { model, version, issues, issuesByElement } = useModelStore();
 
   const stats = `SysML · ${model.blocks.length} blocks · ${model.associations.length} associations · ${model.constraints.length} constraints`;
   const subtitle = breaks.length > 0 ? `${stats} · breaks active: ${breaks.join(", ")}` : stats;
@@ -161,6 +162,11 @@ function ShellBody({ data, projectId, density, markupStyle, diagramStyle, presen
       <StatusBar data={data} />
 
       <IssuesPanel issues={issues} onSelectAnchor={id => setFocusBlockId(id)} />
+      <FindingsPanel
+        projectId={projectId ?? "aristotle"}
+        modelVersion={version}
+        onSelectAnchor={id => setFocusBlockId(id)}
+      />
     </div>
   );
 }