diff --git a/components/frontend/src/lib/components/hackathon/TeamCard.svelte b/components/frontend/src/lib/components/hackathon/TeamCard.svelte
index 14ac4a37..413b4ab0 100644
--- a/components/frontend/src/lib/components/hackathon/TeamCard.svelte
+++ b/components/frontend/src/lib/components/hackathon/TeamCard.svelte
@@ -1,6 +1,5 @@
 <script lang="ts">
     import { resolve } from '$app/paths';
-    import { Pencil } from 'lucide-svelte';
 
     type TeamMember = {
         name: string;
@@ -72,6 +71,16 @@
                          the list scrolls. -->
                     <span class="tnum shrink-0 text-ink-3">{num}.</span>
                     <span class="min-w-0">{title}</span>
+                    <!-- Which of these rows is yours, said the same way the
+                         submissions page says it. This is all `isOwn` draws
+                         now: it used to draw an "Edit team" pencil with no
+                         handler on it, and editing a team is done from the
+                         organiser's Manage Teams board — so the one control
+                         this participant-facing list offered was an organiser
+                         affordance that could not have worked. -->
+                    {#if isOwn}
+                        <span class="badge shrink-0 badge-accent">Your team</span>
+                    {/if}
                 </h3>
                 <div class="block w-2/3 min-w-0">
                     <p class="m-0 text-xs leading-snug text-ink-2">
@@ -115,16 +124,6 @@
             </div>
         </div>
 
-        {#if isOwn}
-            <button
-                type="button"
-                class="btn btn-sm btn-ghost"
-                aria-label="Edit team"
-            >
-                <Pencil class="size-4" />
-            </button>
-        {/if}
-
         <!-- eslint-disable-next-line @typescript-eslint/no-explicit-any -- dynamic path from page data; resolve() is route-literal typed -->
         <a href={resolve(moreInfoHref as any)} class="btn btn-sm btn-ghost">
             More Information
diff --git a/components/frontend/src/lib/components/hackathon/TeamCard.test.ts b/components/frontend/src/lib/components/hackathon/TeamCard.test.ts
new file mode 100644
index 00000000..60915176
--- /dev/null
+++ b/components/frontend/src/lib/components/hackathon/TeamCard.test.ts
@@ -0,0 +1,63 @@
+import { cleanup, render, screen } from "@testing-library/svelte"
+import { afterEach, describe, expect, it } from "vitest"
+
+import TeamCard from "./TeamCard.svelte"
+
+/*
+ * The participant-facing Teams list (issue #182).
+ *
+ * This card used to draw an "Edit team" pencil on any row the viewer was a
+ * member of. It carried no handler of any kind — no `onclick`, no `href`, no
+ * form — and editing a team is done from the organiser's Manage Teams board,
+ * which lives behind a route guard. So the ONE control this list offered a
+ * participant was an organiser affordance that could not have worked.
+ *
+ * What replaces it is the fact the flag actually carries: which row is yours,
+ * worded the way the submissions page words it.
+ */
+
+const props = {
+  num: 1,
+  title: "Sensor Dashboard",
+  projectDescription: "Realtime charts for the field sensors",
+  members: [{ name: "Bob Barker" }],
+  moreInfoHref: "/my/hackathon/h1/teams",
+}
+
+afterEach(cleanup)
+
+describe("TeamCard", () => {
+  it("offers no edit control on the viewer's own team", () => {
+    render(TeamCard, { ...props, isOwn: true })
+
+    expect(screen.queryByRole("button", { name: /edit/i })).toBeNull()
+    expect(screen.queryByLabelText(/edit team/i)).toBeNull()
+  })
+
+  it("offers no edit control on anyone else's team either", () => {
+    render(TeamCard, { ...props, isOwn: false })
+
+    expect(screen.queryByRole("button", { name: /edit/i })).toBeNull()
+  })
+
+  it("marks the viewer's own team", () => {
+    // The positive control on the two absence assertions above: `isOwn` still
+    // reaches the DOM, so those zeros are about the edit control and not about
+    // a prop that stopped being rendered at all.
+    render(TeamCard, { ...props, isOwn: true })
+
+    expect(screen.getByText("Your team")).toBeTruthy()
+  })
+
+  it("does not mark a team the viewer is not on", () => {
+    render(TeamCard, { ...props, isOwn: false })
+
+    expect(screen.queryByText("Your team")).toBeNull()
+  })
+
+  it("keeps the one link the card is for", () => {
+    render(TeamCard, { ...props, isOwn: false })
+
+    expect(screen.getByRole("link", { name: "More Information" })).toBeTruthy()
+  })
+})
diff --git a/components/frontend/src/lib/server/hackathon/capabilities.test.ts b/components/frontend/src/lib/server/hackathon/capabilities.test.ts
new file mode 100644
index 00000000..2a748411
--- /dev/null
+++ b/components/frontend/src/lib/server/hackathon/capabilities.test.ts
@@ -0,0 +1,116 @@
+/**
+ * The property behind issue #182: a participant must never be shown the
+ * organiser's controls.
+ *
+ * Every gate in this module answers one question — "may this viewer be OFFERED
+ * an organiser action?" — and the answer has to be no whenever the viewer's
+ * membership is not known to be an owner. The `mayManageVoting` case is why
+ * this file exists: the voting route used to decide that a viewer with NO
+ * membership row was an admin looking in, reasoning that
+ * `HackathonService.Get` admits nobody else without one. That is true of the
+ * backend's view and not of the frontend's, because `myMembership` is matched
+ * against `locals.platformUser`, which `hooks.server.ts` deliberately leaves
+ * unset when `WhoAmI` answers `UNAVAILABLE` — so an absent row means "I could
+ * not ask", not "an admin".
+ *
+ * The sweep below is the part worth keeping. It asserts the property over
+ * EVERY exported gate rather than over the one that was wrong, so a helper
+ * added later cannot reintroduce the same default without turning this red.
+ * `mayPreferProjects` is excluded by name and with its reason: it is the one
+ * gate here that is not an organiser gate at all.
+ */
+import { describe, expect, it } from "vitest"
+import type { HackathonMember } from "$lib/server/grpc/generated/hackathon/entities/hackathon_member"
+import { HackathonRole } from "$lib/server/grpc/generated/hackathon/entities/hackathon_role"
+import * as capabilities from "./capabilities"
+import {
+  mayManagePages,
+  mayManageParticipants,
+  mayManagePhases,
+  mayManageTracks,
+  mayManageVoting,
+  mayPreferProjects,
+} from "./capabilities"
+
+/** Only the two fields every gate here reads. */
+function member(role: HackathonRole, isWaiting = false): HackathonMember {
+  return { role, isWaiting } as HackathonMember
+}
+
+const OWNER = member(HackathonRole.HACKATHON_ROLE_OWNER)
+const MEMBER = member(HackathonRole.HACKATHON_ROLE_MEMBER)
+
+/**
+ * Every organiser gate this module exports, discovered from the module rather
+ * than listed by hand: a new helper joins the sweep by existing.
+ */
+const organiserGates = Object.entries(capabilities).filter(
+  ([name, fn]) => typeof fn === "function" && name !== "mayPreferProjects",
+) as [string, (m: HackathonMember | undefined, isAdmin?: boolean) => boolean][]
+
+describe("organiser gates", () => {
+  it("covers every exported gate but the one that is not one", () => {
+    // A positive control on the sweep itself: an empty or accidentally
+    // filtered list would make all four assertions below vacuous.
+    expect(organiserGates.length).toBeGreaterThanOrEqual(5)
+    expect(organiserGates.map(([name]) => name)).toContain("mayManageVoting")
+    expect(organiserGates.map(([name]) => name)).not.toContain(
+      "mayPreferProjects",
+    )
+  })
+
+  it.each(organiserGates)("%s refuses an unknown membership", (_name, gate) => {
+    expect(gate(undefined, false)).toBe(false)
+  })
+
+  it.each(organiserGates)("%s refuses a plain member", (_name, gate) => {
+    expect(gate(MEMBER, false)).toBe(false)
+  })
+
+  it.each(organiserGates)("%s admits the owner", (_name, gate) => {
+    expect(gate(OWNER, false)).toBe(true)
+  })
+
+  it.each(organiserGates)(
+    "%s admits a global admin who never joined",
+    (_name, gate) => {
+      // The escape hatch casbin gives an admin, and the reason "no membership
+      // row" was ever read as "organiser". It is stated now, not inferred.
+      expect(gate(undefined, true)).toBe(true)
+    },
+  )
+})
+
+describe("mayManageVoting", () => {
+  it("does not read an absent membership as an admin", () => {
+    expect(mayManageVoting(undefined, false)).toBe(false)
+  })
+
+  it("agrees with the other hackathon:write gates", () => {
+    // All of these mirror the same casbin rule (`hackathon:write`, granted to
+    // Owner and to an admin through the global escape hatch), so a viewer who
+    // is offered one must be offered all of them — otherwise the sidebar and
+    // the page it leads to can disagree about who the organiser is.
+    for (const m of [undefined, MEMBER, OWNER]) {
+      expect(mayManageVoting(m)).toBe(mayManageParticipants(m))
+      expect(mayManageVoting(m)).toBe(mayManagePhases(m))
+      expect(mayManageVoting(m)).toBe(mayManagePages(m))
+      expect(mayManageVoting(m)).toBe(mayManageTracks(m))
+    }
+  })
+})
+
+describe("mayPreferProjects", () => {
+  it("is offered to a plain member, unlike the organiser gates", () => {
+    // The control that proves the sweep above is testing a real distinction
+    // rather than a list that happens to hold.
+    expect(mayPreferProjects(MEMBER)).toBe(true)
+  })
+
+  it("is withheld from a waitlisted member and from a non-participant", () => {
+    expect(
+      mayPreferProjects(member(HackathonRole.HACKATHON_ROLE_MEMBER, true)),
+    ).toBe(false)
+    expect(mayPreferProjects(undefined)).toBe(false)
+  })
+})
diff --git a/components/frontend/src/lib/server/hackathon/capabilities.ts b/components/frontend/src/lib/server/hackathon/capabilities.ts
index a7be927e..21b7831a 100644
--- a/components/frontend/src/lib/server/hackathon/capabilities.ts
+++ b/components/frontend/src/lib/server/hackathon/capabilities.ts
@@ -126,3 +126,39 @@ export function mayManageParticipants(
 
   return membership?.role === HackathonRole.HACKATHON_ROLE_OWNER
 }
+
+/**
+ * Whether to show the organiser's voting panel — open and close voting, set the
+ * ballot rules, create and edit categories, record placements, export ballots.
+ *
+ * Mirrors the backend exactly, same as `mayManageParticipants`: every mutation
+ * behind that panel enforces hackathon-scoped `hackathon:write` —
+ * `CreateVoteCategory` (`vote_service.go:257`), `EditVoteCategory` (`:315`),
+ * `DeleteVoteCategory` (`:418`), `ExportVotes` (`:1071`), `CreateVoteResult`
+ * (`:1286`), `EditVoteResult` (`:1329`), `DeleteVoteResult` (`:1378`),
+ * `SuggestResults` (`:1419`), `ExportResults` (`:1593`) — which casbin grants to
+ * `Owner` outright and to an admin through the global escape hatch
+ * (`rbac.go:176`). It is the same rule `VoteService.isOrganizer`
+ * (`vote_service.go:791`) applies when it decides who may not cast a ballot.
+ *
+ * **Fails closed, and that is the point.** The voting route used to read
+ * "no membership row" as "an admin looking in", on the reasoning that
+ * `HackathonService.Get` admits nobody else without one. The premise holds for
+ * the BACKEND's view; it does not hold for the frontend's, because
+ * `myMembership` is matched against `locals.platformUser`, and
+ * `hooks.server.ts` deliberately proceeds with that unset when `WhoAmI` answers
+ * `UNAVAILABLE`. A backend that has come back by the time the layout issues its
+ * `Get` — the reconnect backoff is capped at 2s — therefore serves a plain
+ * member a page with no membership row on it, and the old default handed them
+ * the whole organiser panel. Unknown membership is now not-an-organiser, which
+ * is also what the backend's own `isOrganizer` does with a role lookup that
+ * errors.
+ */
+export function mayManageVoting(
+  membership: HackathonMember | undefined,
+  isAdmin = false,
+): boolean {
+  if (isAdmin) return true
+
+  return membership?.role === HackathonRole.HACKATHON_ROLE_OWNER
+}
diff --git a/components/frontend/src/routes/(app)/my/hackathon/[id]/voting/+page.server.ts b/components/frontend/src/routes/(app)/my/hackathon/[id]/voting/+page.server.ts
index 30072b8c..d3cc8187 100644
--- a/components/frontend/src/routes/(app)/my/hackathon/[id]/voting/+page.server.ts
+++ b/components/frontend/src/routes/(app)/my/hackathon/[id]/voting/+page.server.ts
@@ -1,6 +1,7 @@
 import type { Actions, PageServerLoad } from "./$types"
 import type { ActionFailure, Cookies } from "@sveltejs/kit"
 import { requireGrpc } from "$lib/server/grpc/client"
+import { mayManageVoting } from "$lib/server/hackathon/capabilities"
 import { fail } from "@sveltejs/kit"
 import { ClientError, Status } from "nice-grpc-common"
 
@@ -38,9 +39,6 @@ const SUBMISSION_STATUS_LABEL: Partial<Record<number, string>> = {
 const EXPORT_CSV = 1
 const EXPORT_JSON = 2
 
-/** HackathonRole: UNSPECIFIED=0, OWNER=1, MEMBER=2 */
-const HACKATHON_ROLE_OWNER = 1
-
 /** Every action answers with this one shape, so `form?.x` stays typed. */
 type VotingForm = {
   message?: string
@@ -171,15 +169,17 @@ function safeName(raw: string): string {
 
 export const load: PageServerLoad = async (event) => {
   const { vote, team } = requireGrpc(event.locals.grpc)
-  const { hackathon, myMembership } = await event.parent()
+  const { hackathon, myMembership, isGlobalAdmin } = await event.parent()
   const hackathonId = event.params.id
   const myUserId = event.locals.platformUser?.id ?? ""
 
-  // The parent layout's Get only admits confirmed participants, hackathon
-  // owners and global admins — so a viewer who reached this page with no
-  // membership row at all is an admin looking in.
-  const isOrganizer =
-    !myMembership || myMembership.role === HACKATHON_ROLE_OWNER
+  // Owner-or-admin, and nothing else — see `mayManageVoting`. This used to read
+  // "no membership row" as "an admin looking in", which is the one gate in the
+  // app that failed OPEN: `myMembership` is matched against
+  // `locals.platformUser`, which `hooks.server.ts` leaves unset when `WhoAmI`
+  // answers `UNAVAILABLE`, so a plain member could be handed the whole
+  // organiser panel. The admin escape hatch is now stated rather than inferred.
+  const isOrganizer = mayManageVoting(myMembership ?? undefined, isGlobalAdmin)
 
   let categories: Category[] = []
   let serviceAvailable = true