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/internal/api/websocket.go

@@ -688,11 +688,18 @@ func (h *WSHub) HandleAgentWS(w http.ResponseWriter, r *http.Request) {
 				}
 
 				// Connect to pool in background — do NOT block the auth_response.
-				// The agent can start and the pool proxy will be ready by the time
-				// the first share is submitted.
+				// Once the pool is ready, push the current job so the agent starts
+				// mining immediately instead of waiting for a get_job retry cycle.
 				go func(pc pool.Config, bcs []pool.Config, aid string) {
-					if _, err := h.poolManager.EnsurePoolWithBackups(&pc, bcs); err != nil {
+					proxy, err := h.poolManager.EnsurePoolWithBackups(&pc, bcs)
+					if err != nil {
 						log.Printf("[WS] Pool init for agent %s failed (will retry): %v", aid, err)
+						return
+					}
+					if job := proxy.GetCurrentJob(); job != nil {
+						if wErr := h.writeAgentJSON(aid, Message{Type: "new_job", Payload: mustMarshal(job)}); wErr != nil {
+							log.Printf("[WS] Push initial job to agent %s: %v", aid, wErr)
+						}
 					}
 				}(poolCfg, backupCfgs, agentID)
 			}
@@ -794,10 +801,21 @@ func (h *WSHub) HandleAgentWS(w http.ResponseWriter, r *http.Request) {
 			go h.runPingLoopAgent(ac)
 		}
 
-			conn.WriteJSON(Message{Type: "auth_response", Payload: mustMarshal(map[string]interface{}{
-				"success":  true,
-				"agent_id": agentID,
-			})})
+		conn.WriteJSON(Message{Type: "auth_response", Payload: mustMarshal(map[string]interface{}{
+			"success":  true,
+			"agent_id": agentID,
+		})})
+
+			// Auto-start mining: ensure the agent isn't stuck in a paused
+			// state from a previous session. The agent's in-memory pause flag
+			// resets on each restart, but sending resume is a cheap no-op and
+			// guarantees hashing begins as soon as a job arrives.
+			if h.agentPoolConfig(agentID).Wallet != "" {
+				_ = h.writeAgentJSON(agentID, Message{
+					Type:    "command",
+					Payload: mustMarshal(map[string]interface{}{"action": "resume"}),
+				})
+			}
 
 			// Enrich agent with hostname before broadcasting so the dashboard
 			// immediately shows the correct machine-specific display name.