agent-ui: per-tool emoji icons + thinking/turn-end glyphs in terminal

Following the 🧠 thinking-tokens indicator (operator liked it), give terminal
rows evocative glyphs:
- 💭 thinking prose (pairs with the 🧠 token counter)
- ✅/❌ turn-end ok/fail (was ✓/✗)
- per-tool icons via toolIcon(name): 📤 send · 📥 recv · ❓ ask · ✍️ answer
  · ⏰ remind · 🏷️ set_status · 🪢 loose-ends · ↻/⏹️/▶️/🔄 lifecycle · 📦
  request_* · ⏱️ schedule · 🖥️ bash · 💬 matrix · 📖 Read · 💾 Write · ✏️
  Edit · 🔍 Glob/Grep · 🔧 default — on both flat rows and the rich
  send/ask/answer/Write/Edit summaries.

Dropped the original 🐝 task-row glyphs: claude's nested-agent Task tool is
intentionally omitted from agents' allow-list (mcp.rs), so those rows never
render for agents. Doc table updated.

Closes the emojify-terminal request.

frontend/packages/agent/src/app.js

@@ -1486,6 +1486,39 @@ window.marked = marked;
       const tail = keys.length > 4 ? ' …+' + (keys.length - 4) : '';
       return name + ' ' + pretty.join(' · ') + tail;
     }
+    // Per-tool glyph for the tool-use row prefix — gives each hive / MCP /
+    // built-in tool a distinctive icon instead of a generic wrench, so the
+    // scrollback is scannable at a glance. Exact tool names first, then
+    // MCP-server family fallbacks, then a generic wrench default.
+    const TOOL_ICONS = {
+      'mcp__hyperhive__send': '📤',
+      'mcp__hyperhive__recv': '📥',
+      'mcp__hyperhive__ask': '❓',
+      'mcp__hyperhive__answer': '✍️',
+      'mcp__hyperhive__remind': '⏰',
+      'mcp__hyperhive__set_status': '🏷️',
+      'mcp__hyperhive__get_loose_ends': '🪢',
+      'mcp__hyperhive__cancel_loose_end': '✂️',
+      'mcp__hyperhive__get_agent_meta': 'ℹ️',
+      'mcp__hyperhive__request_next_turn': '⏩',
+      'mcp__hyperhive__restart': '↻',
+      'mcp__hyperhive__kill': '⏹️',
+      'mcp__hyperhive__start': '▶️',
+      'mcp__hyperhive__update': '🔄',
+      'mcp__hyperhive__list_containers': '📋',
+      Read: '📖', Write: '💾', Edit: '✏️', Glob: '🔍', Grep: '🔍',
+    };
+    function toolIcon(name) {
+      if (TOOL_ICONS[name]) return TOOL_ICONS[name];
+      if (typeof name === 'string') {
+        if (name.startsWith('mcp__matrix__')) return '💬';
+        if (name.startsWith('mcp__bash__')) return '🖥️';
+        if (name.includes('schedule')) return '⏱️';
+        // request_apply_commit / request_init_config / request_update_meta_inputs
+        if (name.startsWith('mcp__hyperhive__request_')) return '📦';
+      }
+      return '🔧';
+    }
     // Pretty-print a tool call: per-known-tool format, fallback to JSON
     // for unknown tools.
     function fmtToolUse(c) {
@@ -1563,7 +1596,7 @@ window.marked = marked;
         // (`→`) — the disclosure marker (`▸/▾`) from CSS sits in the
         // prefix column for every row kind, and the row's cyan colour
         // already signals "outbound tool".
-        const summary = name + ' ' + path + ' · '
+        const summary = toolIcon(name) + ' ' + name + ' ' + path + ' · '
           + (minus ? '-' + minus + ' ' : '') + '+' + plus;
         return api.detailsDiff('tool-use', summary, body);
       }
@@ -1575,7 +1608,7 @@ window.marked = marked;
         const body = String(input.body || '');
         const lines = body.split('\n').length;
         return detailsOpenMd(api, 'tool-use',
-          'send → ' + to + (lines > 1 ? ` · ${lines}L` : ''),
+          toolIcon(name) + ' send → ' + to + (lines > 1 ? ` · ${lines}L` : ''),
           body);
       }
       if (name === 'mcp__hyperhive__ask') {
@@ -1583,7 +1616,7 @@ window.marked = marked;
         const q = String(input.question || '');
         const lines = q.split('\n').length;
         const d = detailsOpenMd(api, 'tool-use',
-          'ask → ' + to + (lines > 1 ? ` · ${lines}L` : ''),
+          toolIcon(name) + ' ask → ' + to + (lines > 1 ? ` · ${lines}L` : ''),
           q);
         // When the ask targets the operator, mount an inline answer
         // slot in the live terminal — see docs/web-ui.md::Per-agent
@@ -1613,7 +1646,7 @@ window.marked = marked;
         const a = String(input.answer || '');
         const lines = a.split('\n').length;
         return detailsOpenMd(api, 'tool-use',
-          'answer #' + id + (lines > 1 ? ` · ${lines}L` : ''),
+          toolIcon(name) + ' answer #' + id + (lines > 1 ? ` · ${lines}L` : ''),
           a);
       }
       // Bash task runner — show full command in an expandable pre block so
@@ -1622,7 +1655,7 @@ window.marked = marked;
       if (name === 'mcp__bash__run') {
         const cmd = String(input.cmd || '');
         const firstLine = cmd.split('\n')[0];
-        const summary = 'run* $ ' + trim(firstLine.trim(), 72);
+        const summary = toolIcon(name) + ' run* $ ' + trim(firstLine.trim(), 72);
         return api.details('tool-use', summary, '$ ' + cmd);
       }
       return null;
@@ -1770,12 +1803,12 @@ window.marked = marked;
           }
           else if (c.type === 'thinking') {
             const txt = (c.thinking || c.text || '').trim();
-            api.row('thinking', txt ? '· ' + txt : '· thinking …');
+            api.row('thinking', txt ? '💭 ' + txt : '💭 thinking …');
           }
           else if (c.type === 'tool_use') {
             if (c.id && c.name) toolNameById.set(c.id, c.name);
             if (!renderRichToolUse(c, api)) {
-              api.row('tool-use', '→  ' + fmtToolUse(c));
+              api.row('tool-use', toolIcon(c.name) + ' ' + fmtToolUse(c));
             }
           }
         }
@@ -1846,7 +1879,7 @@ window.marked = marked;
           }
           const cls = ev.ok ? 'turn-end-ok' : 'turn-end-fail';
           const row = api.row(cls,
-            (ev.ok ? '✓' : '✗') + ' turn ' + (ev.ok ? 'ok' : 'fail')
+            (ev.ok ? '✅' : '❌') + ' turn ' + (ev.ok ? 'ok' : 'fail')
             + (ev.note ? ' — ' + ev.note : ''));
           // Turn end time + duration since the paired turn-start.
           // Same `ts` guard as turn_start; duration only when we saw the