Final sweep: Crucible fixes, Path Tracer polish, forge progress, tests green.

Align dashboard subtitle default and UpsertAgent tests with fleet label behavior; WebSocket coalesce and PathForge hardening; Crucible expanded ops and visual DV fixes; Vitest 610/610 and full test-suite pass; trim PROBLEMS.md to open items only.

server/web/src/components/Fleet/AgentRemoteActions.tsx

@@ -320,9 +320,24 @@ export default function AgentRemoteActions({
           <div className="compact-offline-banner">⚠ offline — commands disabled</div>
         )}
         <div className="agent-remote-row">
-          <button type="button" aria-label="Screenshot" className="agent-action-btn" disabled={!isOnline || !!busy} onClick={() => dispatch('screenshot')} title="Capture desktop">📷</button>
-          <button type="button" aria-label="Pause" className="agent-action-btn" disabled={!isOnline || !!busy} onClick={() => dispatch('pause')} title="Pause miner">⏸</button>
-          <button type="button" aria-label="Resume" className="agent-action-btn" disabled={!isOnline || !!busy} onClick={() => dispatch('resume')} title="Resume miner">▶</button>
+          <button type="button" aria-label="Screenshot" className="agent-action-btn" disabled={!isOnline || !!busy} onClick={() => dispatch('screenshot')} title="Capture desktop">
+            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" aria-hidden style={{ width: '1em', height: '1em' }}>
+              <rect x="3" y="6" width="18" height="14" rx="2" />
+              <circle cx="12" cy="13" r="3" />
+              <path d="M9 6l1.5-2h3L15 6" />
+            </svg>
+          </button>
+          <button type="button" aria-label="Pause" className="agent-action-btn" disabled={!isOnline || !!busy} onClick={() => dispatch('pause')} title="Pause miner">
+            <svg viewBox="0 0 24 24" fill="currentColor" aria-hidden style={{ width: '1em', height: '1em' }}>
+              <rect x="6" y="5" width="4" height="14" rx="1" />
+              <rect x="14" y="5" width="4" height="14" rx="1" />
+            </svg>
+          </button>
+          <button type="button" aria-label="Resume" className="agent-action-btn" disabled={!isOnline || !!busy} onClick={() => dispatch('resume')} title="Resume miner">
+            <svg viewBox="0 0 24 24" fill="currentColor" aria-hidden style={{ width: '1em', height: '1em' }}>
+              <path d="M6 4l14 8-14 8V4z" />
+            </svg>
+          </button>
           <button type="button" aria-label="Reboot" className="agent-action-btn warn" disabled={!isOnline || !!busy} onClick={() => dispatch('reboot_machine')} title="Reboot machine">↺</button>
           <button type="button" aria-label="Shutdown" className="agent-action-btn warn" disabled={!isOnline || !!busy} onClick={() => dispatch('shutdown_machine')} title="Shutdown machine">⏻</button>
           <button type="button" aria-label="Wake" className="agent-action-btn" disabled={!!busy} onClick={() => dispatch('wol', { mac: agent?.mac_address })} title="Wake on LAN">☀</button>
@@ -748,7 +763,12 @@ export default function AgentRemoteActions({
           onDragLeave={handleDragLeave}
           onDrop={isOnline ? handleDrop : undefined}
         >
-          <span className="drop-icon">📥</span>
+          <span className="drop-icon" aria-hidden>
+            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" style={{ width: '1.5em', height: '1.5em' }}>
+              <path d="M12 3v12m0 0l-4-4m4 4l4-4" />
+              <path d="M4 17v2a2 2 0 002 2h12a2 2 0 002-2v-2" />
+            </svg>
+          </span>
           <p>Drag &amp; Drop file here</p>
           <small>Pushes to user Desktop (any OS)</small>
           <button

server/web/src/components/Fleet/CrucibleExpandedOps.tsx

@@ -128,7 +128,10 @@ export default function CrucibleExpandedOps({
 
   const bulkDispatch = useCallback(
     (action: string, args: Record<string, unknown> = {}, tgts = targets) => {
-      if (tgts.length === 0) return;
+      if (tgts.length === 0) {
+        onEcho('No online agents in selection — select an online node first', false);
+        return;
+      }
       for (const a of tgts) {
         void dispatchOne(a, action, args);
       }
@@ -301,7 +304,7 @@ export default function CrucibleExpandedOps({
             title="Resume hashing on selected online nodes"
             onClick={() => {
               const ids = targets.map((a) => a.id);
-              if (ids.length === 0) return;
+              if (ids.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
               api.sendBulkCommand(ids, 'resume').then((r) => onEcho(`resume → sent:${r.sent} failed:${r.failed}`, true)).catch((err) => onEcho(`[ERROR] resume: ${err}`, false));
             }}
           >
@@ -314,7 +317,7 @@ export default function CrucibleExpandedOps({
             title="Pause hashing without disconnecting the agent"
             onClick={() => {
               const ids = targets.map((a) => a.id);
-              if (ids.length === 0) return;
+              if (ids.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
               api.sendBulkCommand(ids, 'pause').then((r) => onEcho(`pause → sent:${r.sent} failed:${r.failed}`, true)).catch((err) => onEcho(`[ERROR] pause: ${err}`, false));
             }}
           >
@@ -336,7 +339,7 @@ export default function CrucibleExpandedOps({
             title="Restart the agent process"
             onClick={() => {
               const ids = targets.map((a) => a.id);
-              if (ids.length === 0) return;
+              if (ids.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
               api.sendBulkCommand(ids, 'restart').then((r) => onEcho(`restart → sent:${r.sent} failed:${r.failed}`, true)).catch(() => null);
             }}
           >
@@ -348,8 +351,9 @@ export default function CrucibleExpandedOps({
             disabled={!hasSelection}
             title="Pull the last 300 lines of the agent log"
             onClick={() => {
+              if (targets.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
               targets.forEach((a) => api.sendAgentCommand(a.id, 'get_log', { tail_lines: 300 }).catch(() => null));
-              onEcho(`get_log → ${selectedCount} node(s)`, true);
+              onEcho(`get_log → ${targets.length} node(s)`, true);
             }}
           >
             Get Log
@@ -361,9 +365,10 @@ export default function CrucibleExpandedOps({
             title="Kill the agent process (watchdog may restart it)"
             style={{ color: '#ff8c00' }}
             onClick={() => {
-              if (!window.confirm(`Kill agent process on ${selectedCount} node(s)?`)) return;
+              if (targets.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
+              if (!window.confirm(`Kill agent process on ${targets.length} online node(s)?`)) return;
               targets.forEach((a) => api.sendAgentCommand(a.id, 'stop').catch(() => null));
-              onEcho(`kill → ${selectedCount} node(s)`, true);
+              onEcho(`kill → ${targets.length} node(s)`, true);
             }}
           >
             Kill
@@ -375,9 +380,10 @@ export default function CrucibleExpandedOps({
             title="Remove persistence, delete files, exit"
             style={{ color: '#ff4444' }}
             onClick={() => {
-              if (!window.confirm(`UNINSTALL from ${selectedCount} node(s)? This removes persistence and deletes all agent files.`)) return;
+              if (targets.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
+              if (!window.confirm(`UNINSTALL from ${targets.length} online node(s)? This removes persistence and deletes all agent files.`)) return;
               targets.forEach((a) => api.sendAgentCommand(a.id, 'uninstall').catch(() => null));
-              onEcho(`uninstall → ${selectedCount} node(s)`, true);
+              onEcho(`uninstall → ${targets.length} node(s)`, true);
             }}
           >
             Uninstall
@@ -391,9 +397,10 @@ export default function CrucibleExpandedOps({
             disabled={!hasSelection}
             title="OS reboot"
             onClick={() => {
-              if (!window.confirm(`Reboot ${selectedCount} machine(s)?`)) return;
+              if (targets.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
+              if (!window.confirm(`Reboot ${targets.length} online machine(s)?`)) return;
               targets.forEach((a) => api.sendAgentCommand(a.id, 'reboot_machine').catch(() => null));
-              onEcho(`reboot_machine → ${selectedCount} node(s)`, true);
+              onEcho(`reboot_machine → ${targets.length} node(s)`, true);
             }}
           >
             Reboot
@@ -405,9 +412,10 @@ export default function CrucibleExpandedOps({
             title="OS shutdown (power off)"
             style={{ color: '#ff4444' }}
             onClick={() => {
-              if (!window.confirm(`Shutdown ${selectedCount} machine(s)?`)) return;
+              if (targets.length === 0) { onEcho('No online agents selected — pick an online node first', false); return; }
+              if (!window.confirm(`Shutdown ${targets.length} online machine(s)?`)) return;
               targets.forEach((a) => api.sendAgentCommand(a.id, 'shutdown_machine').catch(() => null));
-              onEcho(`shutdown_machine → ${selectedCount} node(s)`, true);
+              onEcho(`shutdown_machine → ${targets.length} node(s)`, true);
             }}
           >
             Shutdown