Add Domains and Power rails views for functional groups.

Sidebar tabs show routing-first topology from placement_plan/functional_groups, with IC groups and satellite roles highlighted per domain and per supply rail.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/lib/api.ts

@@ -21,6 +21,7 @@ import type {
   LcscPayload,
   NetlistPreviewDesignator,
   PauseCheckpoint,
+  PlacementPlan,
   Project,
   SkippedComponent,
   ValidationReport,
@@ -608,24 +609,7 @@ export function placementEventsUrl(projectId: string): string {
   return `${BASE}/api/pipeline/${projectId}/placement/events`;
 }
 
-export async function fetchPlacementPlan(projectId: string): Promise<{
-  objective?: string;
-  domains: Array<{
-    domain_id: string;
-    power_nets: string[];
-    ic_refs: string[];
-    assemble_order: string[];
-  }>;
-  groups: Array<{
-    ref: string;
-    mpn?: string | null;
-    component_subtype?: string | null;
-    rank?: number;
-    satellites: Array<{ ref: string; role_hint?: string; hop?: number }>;
-    layout_rules?: unknown[];
-    assemble_order?: string[];
-  }>;
-}> {
+export async function fetchPlacementPlan(projectId: string): Promise<PlacementPlan> {
   const res = await authFetch(`${BASE}/api/pipeline/${projectId}/placement/plan`);
   if (!res.ok) {
     const err = await res.json().catch(() => ({ detail: "Placement plan not found" }));

frontend/src/lib/types.ts

@@ -285,6 +285,51 @@ export interface Project {
   placementState?: Record<string, unknown> | null;
 }
 
+export type RoleHint =
+  | "decoupling"
+  | "bulk"
+  | "load_cap"
+  | "filter"
+  | "pullup"
+  | "series"
+  | "divider"
+  | "bridge"
+  | "crystal"
+  | "other";
+
+export interface PlacementSatellite {
+  ref: string;
+  component_type?: string;
+  component_subtype?: string | null;
+  nets?: string[];
+  hop?: number;
+  role_hint?: RoleHint;
+}
+
+export interface PlacementIcGroup {
+  ref: string;
+  mpn?: string | null;
+  component_subtype?: string | null;
+  rank?: number;
+  nets?: string[];
+  satellites: PlacementSatellite[];
+  layout_rules?: unknown[];
+  assemble_order?: string[];
+}
+
+export interface PlacementDomain {
+  domain_id: string;
+  power_nets: string[];
+  ic_refs: string[];
+  assemble_order: string[];
+}
+
+export interface PlacementPlan {
+  objective?: string;
+  domains: PlacementDomain[];
+  groups: PlacementIcGroup[];
+}
+
 // One entry per EDIF sub-design (`&NNNN` ID prefix). Returned by the upload
 // endpoint and the subdesigns inspection endpoint; consumed by the wizard's
 // sub-design picker step.