Add "This relay only" checkbox to compose UI

- Add localOnly checkbox to ComposeView, defaulting to checked
- When checked, event is published only to the local ORLY relay
- When unchecked, event is also broadcast to configured relays
  via nostrClient.publish() (SimplePool)
- Bump version to v0.58.4

Files modified:
- app/web/src/ComposeView.svelte: Add localOnly prop, checkbox UI, styles
- app/web/src/App.svelte: Wire composeLocalOnly state, conditional broadcast
- app/web/dist/: Rebuilt bundle
- pkg/version/version: v0.58.3 -> v0.58.4

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/web/src/App.svelte

@@ -147,6 +147,7 @@
     // Compose tab state
     let composeEventJson = "";
     let composePublishError = "";
+    let composeLocalOnly = true;
 
     // Recovery tab state
     let recoverySelectedKind = null;
@@ -2879,9 +2880,18 @@
 
             if (result.success) {
                 composePublishError = "";
-                alert("Event published successfully to ORLY relay!");
-                // Optionally clear the editor after successful publish
-                // composeEventJson = '';
+
+                if (!composeLocalOnly) {
+                    // Also broadcast to configured relays
+                    try {
+                        await nostrClient.publish(event);
+                    } catch (broadcastErr) {
+                        console.warn("Broadcast to other relays failed:", broadcastErr);
+                    }
+                    alert("Event published and broadcast to relays!");
+                } else {
+                    alert("Event published to this relay only.");
+                }
             } else {
                 // Parse the error reason and provide helpful guidance
                 const reason = result.reason || "Unknown error";
@@ -3064,6 +3074,7 @@
         {:else if selectedTab === "compose"}
             <ComposeView
                 bind:composeEventJson
+                bind:localOnly={composeLocalOnly}
                 {userPubkey}
                 {userRole}
                 {policyEnabled}

app/web/src/ComposeView.svelte

@@ -4,6 +4,7 @@
     export let userRole = "";
     export let policyEnabled = false;
     export let publishError = "";
+    export let localOnly = true;
 
     import { createEventDispatcher } from "svelte";
     import EventTemplateSelector from "./EventTemplateSelector.svelte";
@@ -53,6 +54,10 @@
             >Reformat</button
         >
         <button class="compose-btn sign-btn" on:click={signEvent}>Sign</button>
+        <label class="local-only-label">
+            <input type="checkbox" bind:checked={localOnly} />
+            This relay only
+        </label>
         <button class="compose-btn publish-btn" on:click={publishEvent}
             >Publish</button
         >
@@ -149,6 +154,24 @@
         filter: brightness(0.9);
     }
 
+    .local-only-label {
+        display: flex;
+        align-items: center;
+        gap: 0.35em;
+        font-size: 0.85rem;
+        color: var(--text-color);
+        cursor: pointer;
+        user-select: none;
+        margin-left: auto;
+        padding: 0 0.5em;
+        white-space: nowrap;
+    }
+
+    .local-only-label input[type="checkbox"] {
+        cursor: pointer;
+        accent-color: var(--accent-color);
+    }
+
     .publish-btn {
         background: var(--success);
         color: var(--text-color);

pkg/version/version

@@ -1 +1 @@
-v0.58.3
+v0.58.4