diff --git a/docs/superpowers/plans/2026-04-28-pr3-mentoring-config-completeness.md b/docs/superpowers/plans/2026-04-28-pr3-mentoring-config-completeness.md
new file mode 100644
index 0000000..8d9e65f
--- /dev/null
+++ b/docs/superpowers/plans/2026-04-28-pr3-mentoring-config-completeness.md
@@ -0,0 +1,39 @@
+# PR 3 — MENTORING Round Config Completeness (§A)
+
+> **For agentic workers:** Use superpowers:executing-plans for inline execution.
+
+**Goal:** Surface every `MentoringConfigSchema` field on the round Config tab; hide the empty General Settings card on MENTORING rounds; relax the "File requirements set" Launch Readiness gate when no file promotion is configured.
+
+**Architecture:** UI-only changes. No schema, no API. Three files touched.
+
+**Spec:** `docs/superpowers/specs/2026-04-28-mentor-round-readiness-design.md` §A.
+
+## File map
+
+| File | Action | Why |
+|------|--------|-----|
+| `src/components/admin/rounds/config/mentoring-config.tsx` | Modify | Add `mentoringRequestDeadlineDays` numeric input + `passThroughIfNoRequest` toggle; add help-text to Eligibility |
+| `src/app/(admin)/admin/rounds/[roundId]/page.tsx` | Modify | Hide General Settings card when `round.roundType === 'MENTORING'`; relax File-requirements readiness gate for MENTORING rounds without file promotion configured |
+
+## Tasks
+
+### Task 1: Add the two missing inputs to `mentoring-config.tsx`
+
+- [ ] **Step 1: Patch the file** — append a new "Mentoring Request Window" card BETWEEN the existing two cards, and add help-text to Eligibility. Code in execution.
+
+- [ ] **Step 2: Typecheck** — `npm run typecheck`. Expect 0 errors.
+
+### Task 2: Hide General Settings card + relax readiness on MENTORING rounds
+
+- [ ] **Step 1: Patch `(admin)/admin/rounds/[roundId]/page.tsx`** — wrap the General Settings card in `{!isMentoring && (...)}` and extend the file-requirements bypass condition.
+
+- [ ] **Step 2: Typecheck + build** — confirm clean.
+
+### Task 3: Smoke + commit
+
+- [ ] **Step 1: `npm run build`** — confirm clean.
+- [ ] **Step 2: Commit** — message references §A.
+
+## Out of scope
+
+Form unit tests (heavy render setup; existing config-save mutation already verified by other PRs). Manual smoke covers the UI work.
diff --git a/src/app/(admin)/admin/rounds/[roundId]/page.tsx b/src/app/(admin)/admin/rounds/[roundId]/page.tsx
index 86844f1..78b4632 100644
--- a/src/app/(admin)/admin/rounds/[roundId]/page.tsx
+++ b/src/app/(admin)/admin/rounds/[roundId]/page.tsx
@@ -514,6 +514,7 @@ export default function RoundDetailPage() {
 
   const isFiltering = round?.roundType === 'FILTERING'
   const isEvaluation = round?.roundType === 'EVALUATION'
+  const isMentoring = round?.roundType === 'MENTORING'
   const hasJury = ['EVALUATION', 'LIVE_FINAL', 'DELIBERATION'].includes(round?.roundType ?? '')
   const hasAwards = roundAwards.length > 0
   const isSimpleAdvance = ['INTAKE', 'SUBMISSION', 'MENTORING'].includes(round?.roundType ?? '')
@@ -589,7 +590,8 @@ export default function RoundDetailPage() {
       action: undefined as Route | undefined,
       actionLabel: undefined as string | undefined,
     },
-    ...((isEvaluation && !(config.requireDocumentUpload as boolean))
+    ...((isEvaluation && !(config.requireDocumentUpload as boolean)) ||
+      (isMentoring && !(config.filePromotionEnabled as boolean) && !config.promotionTargetWindowId)
       ? []
       : [{
           label: 'File requirements set',
@@ -2198,7 +2200,8 @@ export default function RoundDetailPage() {
             </CardContent>
           </Card>
 
-          {/* General Round Settings */}
+          {/* General Round Settings — hidden on MENTORING rounds (no advancement targets apply) */}
+          {!isMentoring && (
           <Card>
             <CardHeader className="border-b">
               <ConfigSectionHeader
@@ -2321,6 +2324,7 @@ export default function RoundDetailPage() {
               )}
             </CardContent>
           </Card>
+          )}
 
           {/* Round-type-specific config */}
           <RoundConfigForm
diff --git a/src/components/admin/rounds/config/mentoring-config.tsx b/src/components/admin/rounds/config/mentoring-config.tsx
index f340956..1ff491c 100644
--- a/src/components/admin/rounds/config/mentoring-config.tsx
+++ b/src/components/admin/rounds/config/mentoring-config.tsx
@@ -40,6 +40,11 @@ export function MentoringConfig({ config, onChange }: MentoringConfigProps) {
                 <SelectItem value="admin_selected">Admin Selected</SelectItem>
               </SelectContent>
             </Select>
+            <ul className="text-xs text-muted-foreground space-y-1 mt-2">
+              <li><strong>All Advancing Projects</strong> — every project that enters this round is paired with a mentor.</li>
+              <li><strong>Requested Only</strong> — only projects that explicitly request mentoring participate (default).</li>
+              <li><strong>Admin Selected</strong> — admin manually picks which projects get a mentor.</li>
+            </ul>
           </div>
 
           <div className="flex items-center justify-between">
@@ -56,6 +61,46 @@ export function MentoringConfig({ config, onChange }: MentoringConfigProps) {
         </CardContent>
       </Card>
 
+      <Card>
+        <CardHeader>
+          <CardTitle className="text-base">Mentoring Request Window</CardTitle>
+          <CardDescription>How long teams have to request a mentor, and what happens to non-requesters</CardDescription>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          <div className="space-y-2">
+            <Label htmlFor="mentoringRequestDeadlineDays">Request deadline (days from round opening)</Label>
+            <p className="text-xs text-muted-foreground">After this many days, teams can no longer submit a mentoring request. Default: 14.</p>
+            <Input
+              id="mentoringRequestDeadlineDays"
+              type="number"
+              min={1}
+              max={90}
+              className="w-32"
+              value={(config.mentoringRequestDeadlineDays as number) ?? 14}
+              onChange={(e) => {
+                const v = parseInt(e.target.value, 10)
+                if (!Number.isNaN(v) && v >= 1 && v <= 90) update('mentoringRequestDeadlineDays', v)
+              }}
+            />
+          </div>
+
+          <div className="flex items-center justify-between">
+            <div>
+              <Label htmlFor="passThroughIfNoRequest">Auto-pass non-requesters</Label>
+              <p className="text-xs text-muted-foreground">
+                When ON, projects that don&apos;t request mentoring auto-PASS to the next round (default).
+                When OFF, all projects are held in PENDING until the admin decides — useful when mentoring is mandatory.
+              </p>
+            </div>
+            <Switch
+              id="passThroughIfNoRequest"
+              checked={(config.passThroughIfNoRequest as boolean | undefined) ?? true}
+              onCheckedChange={(v) => update('passThroughIfNoRequest', v)}
+            />
+          </div>
+        </CardContent>
+      </Card>
+
       <Card>
         <CardHeader>
           <CardTitle className="text-base">Communication & Files</CardTitle>