spaces: a member wears a key minted for that room alone, so a roster stops naming personas

src/views/Community.svelte

@@ -1194,7 +1194,7 @@
                         <span class="tx"><span class="l1"><span class="nm">Create a Space</span></span><span class="l2">{key ? "on Freenet, under your ID" : "needs a SoulStream identity"}</span></span>
                     </button>
                 {/if}
-                <div class="panel" style="margin-top:14px"><h3>What a Space is</h3><p class="hint">A persistent SoulStream community on Freenet. The owner's signed checkpoint is the roster; a removal is a new epoch, and in a private Space every removal rotates the key. Not a Soulseek Room, and never mirrored to one. Invitations travel sealed through the encrypted inbox — the person you invite needs one.</p></div>
+                <div class="panel" style="margin-top:14px"><h3>What a Space is</h3><p class="hint">A persistent SoulStream community on Freenet. The owner's signed checkpoint is the roster; a removal is a new epoch, and in a private Space every removal rotates the key. Not a Soulseek Room, and never mirrored to one. Invitations travel sealed through the encrypted inbox — the person you invite needs one. A member joins under a key minted for this Space alone, so its roster says nothing about who they are anywhere else; only the owner can put a name to one.</p></div>
             </div>
             {#if sv}
                 <div>
@@ -1267,6 +1267,7 @@
                                     <input placeholder="Invite by SoulStream ID (they need an encrypted inbox)" bind:value={spaceInviteKey} />
                                     <button class="ax-fill sm" type="submit" disabled={!spaceInviteKey.trim() || !nodeUp || !!community.busy["space:invite"]}>{community.busy["space:invite"] ? "Inviting…" : "Invite"}</button>
                                 </form>
+                                <p class="hint" style="margin-top:8px">They appear in Members once they answer with the key they will wear here — an invitation on its own puts nobody on the roster.</p>
                                 {#if community.friends.some((f) => f.state === "friends")}<p class="hint" style="margin-top:8px">Friends: {#each community.friends.filter((f) => f.state === "friends") as f (f.id)}<button class="lnk" onclick={() => (spaceInviteKey = f.persona_key)}>{f.username || fpShort(f.persona_key)}</button> {/each}</p>{/if}
                             {/if}
                             <p class="hint" style="margin-top:12px">Members are their SoulStream identities here — a joined Space is a linked identity. Removing someone is a new epoch{#if sv.private}, and in this private Space it also rotates the key: those who stay receive the new one sealed{/if}.</p>