fix(v10.3): Zig 0.15 API fixes for directory iteration

- golden_db.zig: openIterableDir() → openDir() (Zig 0.15 API)
- golden_db.zig: iterate(null) → iterate()
- ralph_cli.zig: Fix updateWithCycle method call (SystemStatsCollector)

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

Author: claude

src/vibeec/golden_db.zig

@@ -191,13 +191,13 @@ pub const GoldenDB = struct {
         var added: usize = 0;
 
         // Open directory
-        var dir = std.fs.cwd().openIterableDir(gen_dir, .{}) catch |err| {
+        var dir = std.fs.cwd().openDir(gen_dir, .{}) catch |err| {
             std.log.warn("Failed to open directory '{s}': {}", .{gen_dir, err});
             return 0;
         };
         defer dir.close();
 
-        var iter = dir.iterate(null);
+        var iter = dir.iterate();
         while (try iter.next()) |entry| {
             if (!std.mem.endsWith(u8, entry.name, ".zig")) continue;
 

trinity-nexus/tools/src/ralph_cli.zig

@@ -373,8 +373,8 @@ fn runSwarmMonitor(allocator: Allocator, verbose: bool, live: bool, use_real_dht
                     mock_peers,
                     watch.dht_stats.triples_stored,
                 );
-                // Update with mock cycle data
-                system_stats.SystemStats.updateWithCycle(&sys_stats, mock_tick, 7);
+                // Update with mock cycle data (method of collector)
+                system_stats.SystemStatsCollector.updateWithCycle(&sys_stats, mock_tick, 7);
 
                 // Process health checks and send RICH alerts with system information
                 try alerts.processAndAlertRich(