Ship Fase B slices: hierarchy, derating bands, timing, PI, ESD/return.

ERROR stays only for RULE+MANDATORY. Hierarchy walks component→pin→net→block.
Derating is PASS/MARGIN/RISK from Vop/Vrated. Timing and PI skip without numbers.
ESD and HS return path are REVIEW, not RULE ERROR.

frontend/content/changelog.md

@@ -2,6 +2,17 @@
 
 What's new in Periscope.
 
+## 2.33.0 — 2026-09-20 — Fase B: hierarchy, derating bands, timing, PI, ESD/return
+
+Usable slices (not a platform): component→pin→net→block inventory, capacitor PASS/MARGIN/RISK from Vop/Vrated, RC/strap timing only with numbers, local vs bulk PI, ESD and HS return as REVIEW.
+
+- [Fixed] `complete_finding` clamps ERROR unless `finding_class=RULE` and `provenance=MANDATORY` (LLM REVIEW cannot stay ERROR).
+- [New] `hierarchy.json` + `PE-HIER-001` dangling IC pins.
+- [New] Derating table `stress` PASS/MARGIN/RISK; findings `PE-DRT-001/002/003`.
+- [New] `PE-TIM-001/002` skip without R/C and t_reset or Vih/Vil.
+- [New] `PE-PI-001/002` local vs bulk; distance only with `layout_rules` mm.
+- [New] `PE-ESD-001`, `PE-RET-001` are REVIEW, never RULE ERROR.
+
 ## 2.32.1 — 2026-09-20 — PCB Action on card + parsed geometry in AI context
 
 Finding cards always show an **Action.** sentence (`action`, else `recommendation`, else a default). PCB AI context now includes vias under the footprint, copper thickness, nearby trace widths, courtyard, and keepout polygons from `.kicad_pcb`.

frontend/src/app/(app)/project/[id]/page.tsx

@@ -943,6 +943,7 @@ function DeratingTable({
                   <th className="pb-2 pr-4 font-medium">Value</th>
                   <th className="pb-2 pr-4 font-medium">C_eff</th>
                   <th className="pb-2 pr-4 font-medium">Type</th>
+                  <th className="pb-2 pr-4 font-medium">Engine</th>
                   <th className="pb-2 pr-4 font-medium">Net+</th>
                   <th className="pb-2 pr-4 font-medium">Net−</th>
                   <th className="pb-2 pr-4 font-medium text-right">Rated V</th>
@@ -1003,6 +1004,15 @@ function DeratingTable({
                           <span className="text-muted-foreground">—</span>
                         )}
                       </td>
+                      <td className="py-2 pr-4 text-xs">
+                        {row.stress && row.stress !== "UNKNOWN" ? (
+                          <Badge variant="outline" className="text-[10px] px-1.5 py-0">
+                            {row.stress}
+                          </Badge>
+                        ) : (
+                          <span className="text-muted-foreground">—</span>
+                        )}
+                      </td>
                       <td className="py-2 pr-4 font-mono text-xs">
                         {row.net_plus ?? <span className="text-muted-foreground">—</span>}
                       </td>

frontend/src/lib/layout-finding.ts

@@ -11,6 +11,10 @@ export function isLayoutFinding(f: {
     id.startsWith("PCB-") ||
     f.source === "pcb_review" ||
     f.source === "pcb_power_thermal" ||
+    f.source === "hierarchy_check" ||
+    f.source === "timing_check" ||
+    f.source === "pi_check" ||
+    f.source === "esd_return_check" ||
     rid.startsWith("PE-PLC") ||
     rid.startsWith("PE-LAY") ||
     rid.startsWith("PE-SI") ||
@@ -19,7 +23,12 @@ export function isLayoutFinding(f: {
     rid.startsWith("PE-THM") ||
     rid.startsWith("PE-VIA") ||
     rid.startsWith("PE-KEL") ||
-    rid.startsWith("PE-STCH")
+    rid.startsWith("PE-STCH") ||
+    rid.startsWith("PE-HIER") ||
+    rid.startsWith("PE-TIM") ||
+    rid.startsWith("PE-PI") ||
+    rid.startsWith("PE-ESD") ||
+    rid.startsWith("PE-RET")
   );
 }
 
@@ -31,10 +40,19 @@ export function isPcbExamFinding(f: {
   return (
     f.source === "pcb_review" ||
     f.source === "pcb_power_thermal" ||
+    f.source === "hierarchy_check" ||
+    f.source === "timing_check" ||
+    f.source === "pi_check" ||
+    f.source === "esd_return_check" ||
     rid.startsWith("PE-PWR") ||
     rid.startsWith("PE-THM") ||
     rid.startsWith("PE-VIA") ||
     rid.startsWith("PE-KEL") ||
-    rid.startsWith("PE-STCH")
+    rid.startsWith("PE-STCH") ||
+    rid.startsWith("PE-HIER") ||
+    rid.startsWith("PE-TIM") ||
+    rid.startsWith("PE-PI") ||
+    rid.startsWith("PE-ESD") ||
+    rid.startsWith("PE-RET")
   );
 }

frontend/src/lib/types.ts

@@ -413,6 +413,7 @@ export interface DeratingRow {
   c_eff_f?: number | null;
   c_eff_formatted?: string | null;
   dc_bias_model?: "stima" | null;
+  stress?: "PASS" | "MARGIN" | "RISK" | "UNKNOWN";
 }
 
 export interface DeratingSettings {