feat(discord): make the typed first-message hint a separate opt-in, off by default

Claude keeps the silent system-prompt hint (startupHint, on). Other CLIs are sent the typed message only with typedHint, which costs a model turn per tab.

src/web/public/index.html

@@ -3288,11 +3288,18 @@
                   </div>
                   <div class="set-row">
                     <div class="set-row-text">
-                      <span class="set-row-label">Tell each CLI how to reach you</span>
-                      <span class="set-row-desc">Claude is told at launch. Other CLIs are sent one short message when a new tab first becomes idle. It explains the codeman notify command, for when a CLI is blocked on something only you can do. Never sent to shell tabs.</span>
+                      <span class="set-row-label">Tell Claude how to reach you</span>
+                      <span class="set-row-desc">Adds a short note about the codeman notify command to Claude's system prompt at launch, for when it is blocked on something only you can do. Nothing appears in the conversation.</span>
                     </div>
                     <label class="switch switch-sm"><input type="checkbox" id="discordStartupHint"><span class="slider"></span></label>
                   </div>
+                  <div class="set-row">
+                    <div class="set-row-text">
+                      <span class="set-row-label">Also tell other CLIs, as a first message</span>
+                      <span class="set-row-desc">Sends the same note once as a message to a brand-new Codex, OpenCode or similar tab when it first becomes idle. Costs one model turn per tab, and for a spawned worker or a scheduled run it arrives with the first real prompt. Never sent to shell, restored, resumed, remote or Docker tabs. Off by default.</span>
+                    </div>
+                    <label class="switch switch-sm"><input type="checkbox" id="discordTypedHint"><span class="slider"></span></label>
+                  </div>
                   <div class="set-row has-field">
                     <div class="set-row-text">
                       <span class="set-row-label">Which events</span>

src/web/public/settings-ui.js

@@ -1770,6 +1770,7 @@ Object.assign(CodemanApp.prototype, {
     document.getElementById('discordPingMode').value = d.pingMode;
     document.getElementById('discordScope').value = d.scope;
     document.getElementById('discordStartupHint').checked = d.startupHint !== false;
+    document.getElementById('discordTypedHint').checked = d.typedHint === true;
     const clearBtn = document.getElementById('discordClearBtn');
     if (clearBtn) clearBtn.style.display = d.hasToken ? '' : 'none';
     const gw = { off: 'Not connected (disabled).', connecting: 'Connecting to Discord…', connected: 'Connected: replies are being read.', error: `Not connected: ${d.gatewayError || 'error'}` };
@@ -1794,6 +1795,7 @@ Object.assign(CodemanApp.prototype, {
       pingMode: document.getElementById('discordPingMode').value,
       scope: document.getElementById('discordScope').value,
       startupHint: document.getElementById('discordStartupHint').checked,
+      typedHint: document.getElementById('discordTypedHint').checked,
     };
     const token = document.getElementById('discordToken').value.trim();
     if (token) payload.token = token; // blank = keep the saved one (Remove token is the way to clear it)

src/web/schemas.ts

@@ -2232,6 +2232,7 @@ export const DiscordUpdateSchema = z
     pingMode: z.enum(DISCORD_PING_MODES).optional(),
     scope: z.enum(WEBHOOK_SCOPES).optional(),
     startupHint: z.boolean().optional(),
+    typedHint: z.boolean().optional(),
   })
   .strict();