feat: add fswatch, sysinfo, and udp demo scripts plus reorder manual sidebar links

Add three new example scripts demonstrating the fswatch, sysinfo, and udp modules with file watching, system metrics, and UDP echo server/client patterns. Reorder the manual API sidebar navigation to list modules alphabetically, removing deprecated entries like websocket, tls, net, json, regex, jinja, os, signal, subprocess, sqlite, and timer while adding argparse, dataset, fswatch, and html.

test/sysinfo/cpu_count.wren

@@ -0,0 +1,7 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var count = SysInfo.cpuCount
+System.print(count is Num) // expect: true
+System.print(count > 0) // expect: true

test/sysinfo/cpu_info.wren

@@ -0,0 +1,19 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var cpus = SysInfo.cpuInfo
+System.print(cpus is List) // expect: true
+System.print(cpus.count > 0) // expect: true
+
+var cpu = cpus[0]
+System.print(cpu is Map) // expect: true
+System.print(cpu.containsKey("model")) // expect: true
+System.print(cpu.containsKey("speed")) // expect: true
+System.print(cpu.containsKey("times")) // expect: true
+
+var times = cpu["times"]
+System.print(times is Map) // expect: true
+System.print(times.containsKey("user")) // expect: true
+System.print(times.containsKey("sys")) // expect: true
+System.print(times.containsKey("idle")) // expect: true

test/sysinfo/hostname.wren

@@ -0,0 +1,7 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var hostname = SysInfo.hostname
+System.print(hostname is String) // expect: true
+System.print(hostname.count > 0) // expect: true

test/sysinfo/hrtime.wren

@@ -0,0 +1,9 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var t1 = SysInfo.hrtime
+var t2 = SysInfo.hrtime
+System.print(t1 is Num) // expect: true
+System.print(t2 is Num) // expect: true
+System.print(t2 >= t1) // expect: true

test/sysinfo/load_average.wren

@@ -0,0 +1,10 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var load = SysInfo.loadAverage
+System.print(load is List) // expect: true
+System.print(load.count) // expect: 3
+System.print(load[0] is Num) // expect: true
+System.print(load[1] is Num) // expect: true
+System.print(load[2] is Num) // expect: true

test/sysinfo/memory.wren

@@ -0,0 +1,16 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var total = SysInfo.totalMemory
+var free = SysInfo.freeMemory
+var resident = SysInfo.residentMemory
+
+System.print(total is Num) // expect: true
+System.print(free is Num) // expect: true
+System.print(resident is Num) // expect: true
+
+System.print(total > 0) // expect: true
+System.print(free > 0) // expect: true
+System.print(resident > 0) // expect: true
+System.print(total >= free) // expect: true

test/sysinfo/network_interfaces.wren

@@ -0,0 +1,23 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var interfaces = SysInfo.networkInterfaces
+System.print(interfaces is Map) // expect: true
+System.print(interfaces.count > 0) // expect: true
+
+for (name in interfaces.keys) {
+    var addrs = interfaces[name]
+    System.print(addrs is List) // expect: true
+
+    for (addr in addrs) {
+        System.print(addr is Map) // expect: true
+        System.print(addr.containsKey("family")) // expect: true
+        System.print(addr.containsKey("address")) // expect: true
+        System.print(addr.containsKey("internal")) // expect: true
+        System.print(addr.containsKey("netmask")) // expect: true
+        System.print(addr.containsKey("mac")) // expect: true
+        break
+    }
+    break
+}

test/sysinfo/uptime.wren

@@ -0,0 +1,7 @@
+// retoor <retoor@molodetz.nl>
+
+import "sysinfo" for SysInfo
+
+var uptime = SysInfo.uptime
+System.print(uptime is Num) // expect: true
+System.print(uptime > 0) // expect: true