feat: enrich AgentInstanceResponse with version/capabilities, add password reset endpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cameleer3-server-app/src/main/java/com/cameleer3/server/app/dto/AgentInstanceResponse.java

@@ -7,6 +7,7 @@ import jakarta.validation.constraints.NotNull;
 import java.time.Duration;
 import java.time.Instant;
 import java.util.List;
+import java.util.Map;
 
 @Schema(description = "Agent instance summary with runtime metrics")
 public record AgentInstanceResponse(
@@ -17,6 +18,8 @@ public record AgentInstanceResponse(
         @NotNull List<String> routeIds,
         @NotNull Instant registeredAt,
         @NotNull Instant lastHeartbeat,
+        String version,
+        Map<String, Object> capabilities,
         double tps,
         double errorRate,
         int activeRoutes,
@@ -29,6 +32,7 @@ public record AgentInstanceResponse(
                 info.id(), info.name(), info.group(),
                 info.state().name(), info.routeIds(),
                 info.registeredAt(), info.lastHeartbeat(),
+                info.version(), info.capabilities(),
                 0.0, 0.0,
                 0, info.routeIds() != null ? info.routeIds().size() : 0,
                 uptime
@@ -38,6 +42,7 @@ public record AgentInstanceResponse(
     public AgentInstanceResponse withMetrics(double tps, double errorRate, int activeRoutes) {
         return new AgentInstanceResponse(
                 id, name, group, status, routeIds, registeredAt, lastHeartbeat,
+                version, capabilities,
                 tps, errorRate, activeRoutes, totalRoutes, uptimeSeconds
         );
     }

cameleer3-server-app/src/main/java/com/cameleer3/server/app/dto/SetPasswordRequest.java

@@ -0,0 +1,7 @@
+package com.cameleer3.server.app.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record SetPasswordRequest(
+    @NotBlank String password
+) {}