feat: Added Net control

app.go

@@ -18,6 +18,7 @@ import (
 	"time"
 
 	"hamlog/internal/adif"
+	"hamlog/internal/antgenius"
 	"hamlog/internal/applog"
 	"hamlog/internal/audio"
 	"hamlog/internal/award"
@@ -25,23 +26,23 @@ import (
 	"hamlog/internal/backup"
 	"hamlog/internal/cat"
 	"hamlog/internal/clublog"
-	"hamlog/internal/cwdecode"
 	"hamlog/internal/cluster"
+	"hamlog/internal/cwdecode"
 	"hamlog/internal/db"
 	"hamlog/internal/dxcc"
 	"hamlog/internal/email"
 	"hamlog/internal/extsvc"
 	"hamlog/internal/integrations/udp"
 	"hamlog/internal/lookup"
+	"hamlog/internal/netctl"
 	"hamlog/internal/operating"
 	"hamlog/internal/pota"
+	"hamlog/internal/powergenius"
 	"hamlog/internal/profile"
 	"hamlog/internal/qslcard"
 	"hamlog/internal/qso"
 	"hamlog/internal/rotator/pst"
 	"hamlog/internal/settings"
-	"hamlog/internal/antgenius"
-	"hamlog/internal/powergenius"
 	"hamlog/internal/ultrabeam"
 	"hamlog/internal/winkeyer"
 
@@ -399,6 +400,14 @@ type App struct {
 	pgxl         *powergenius.Client // PowerGenius XL (4O3A) amp fan control (TCP); nil when disabled
 	audioMgr     *audio.Manager
 	qsoRec       *audio.Recorder // continuous QSO recorder (rolling pre-roll)
+
+	// NET Control: persistent net definitions/rosters (global JSON) + the live
+	// session (in-memory only — active stations currently in QSO).
+	netStore  *netctl.Store
+	netMu     sync.Mutex
+	netOpenID string            // id of the currently open net ("" = none)
+	netActive []*netActiveEntry // stations on the air right now, in check-in order
+
 	cwMu           sync.Mutex        // guards the CW decoder lifecycle
 	cwStop         chan struct{}     // stops the CW decoder capture loop; nil when off
 	cwDecoder      *cwdecode.Decoder // live decoder (for retargeting the pitch)
@@ -827,6 +836,13 @@ func (a *App) startup(ctx context.Context) {
 	a.qsoRec = audio.NewRecorder()
 	a.startQSORecorderIfEnabled()
 
+	// NET Control store (global JSON, shared across logbooks).
+	if ns, err := netctl.Open(filepath.Join(a.dataDir, "nets.json")); err != nil {
+		applog.Printf("netctl: open failed: %v", err)
+	} else {
+		a.netStore = ns
+	}
+
 	// Ultrabeam antenna: connect in the background if enabled.
 	a.startUltrabeam()
 	// Antenna Genius switch: connect in the background if enabled.
@@ -1055,7 +1071,6 @@ func userDataDir() (string, error) {
 	return filepath.Join(filepath.Dir(exe), "data"), nil
 }
 
-
 // fileExists reports whether path exists and is a regular file.
 func fileExists(path string) bool {
 	fi, err := os.Stat(path)
@@ -4260,6 +4275,259 @@ func (a *App) QSOAudioCancel() {
 // RestartQSORecorder applies new audio settings to the running recorder.
 func (a *App) RestartQSORecorder() { a.startQSORecorderIfEnabled() }
 
+// ── NET Control ────────────────────────────────────────────────────────────
+//
+// A NET is a named net with a station roster (persisted globally in nets.json).
+// Opening a net starts an in-memory live session: stations moved "on the air"
+// (NetActivate) accumulate a time_on; moving one back off (NetDeactivate) logs
+// the QSO into the active logbook with live CAT freq/mode and removes it from
+// the session. The session is RAM-only — closing the app mid-net drops any
+// active stations that were never logged.
+
+// netActiveEntry is one station currently on the air in the open net.
+type netActiveEntry struct {
+	Callsign string    `json:"callsign"`
+	Name     string    `json:"name"`
+	QTH      string    `json:"qth"`
+	Country  string    `json:"country"`
+	RSTSent  string    `json:"rst_sent"`
+	RSTRcvd  string    `json:"rst_rcvd"`
+	Comment  string    `json:"comment"`
+	TimeOn   time.Time `json:"time_on"`
+}
+
+// NetList returns all nets (with rosters), ordered by name.
+func (a *App) NetList() []netctl.Net {
+	if a.netStore == nil {
+		return nil
+	}
+	return a.netStore.List()
+}
+
+// NetCreate adds a new named net (defaults 59/59).
+func (a *App) NetCreate(name string) (netctl.Net, error) {
+	if a.netStore == nil {
+		return netctl.Net{}, fmt.Errorf("net store unavailable")
+	}
+	return a.netStore.Create(name)
+}
+
+// NetRename renames a net.
+func (a *App) NetRename(id, name string) error {
+	if a.netStore == nil {
+		return fmt.Errorf("net store unavailable")
+	}
+	return a.netStore.Rename(id, name)
+}
+
+// NetSetDefaults updates a net's default report/comment values.
+func (a *App) NetSetDefaults(id, rstSent, rstRcvd, comment string) error {
+	if a.netStore == nil {
+		return fmt.Errorf("net store unavailable")
+	}
+	return a.netStore.SetDefaults(id, rstSent, rstRcvd, comment)
+}
+
+// NetDelete removes a net and its roster (closing it first if it's open).
+func (a *App) NetDelete(id string) error {
+	if a.netStore == nil {
+		return fmt.Errorf("net store unavailable")
+	}
+	a.netMu.Lock()
+	if a.netOpenID == id {
+		a.netOpenID, a.netActive = "", nil
+	}
+	a.netMu.Unlock()
+	return a.netStore.Delete(id)
+}
+
+// NetRoster returns a net's roster, sorted by callsign.
+func (a *App) NetRoster(id string) ([]netctl.Station, error) {
+	if a.netStore == nil {
+		return nil, fmt.Errorf("net store unavailable")
+	}
+	return a.netStore.Roster(id)
+}
+
+// NetRosterUpsert adds or updates a roster station.
+func (a *App) NetRosterUpsert(id string, s netctl.Station) error {
+	if a.netStore == nil {
+		return fmt.Errorf("net store unavailable")
+	}
+	return a.netStore.RosterUpsert(id, s)
+}
+
+// NetRosterRemove deletes a callsign from a net's roster.
+func (a *App) NetRosterRemove(id, callsign string) error {
+	if a.netStore == nil {
+		return fmt.Errorf("net store unavailable")
+	}
+	return a.netStore.RosterRemove(id, callsign)
+}
+
+// NetLookup resolves a callsign via the configured provider (QRZ) so the
+// Add-contact dialog can pre-fill name/QTH/country/zones. Best-effort — returns
+// just the callsign if no provider or no match.
+func (a *App) NetLookup(callsign string) netctl.Station {
+	st := netctl.Station{Callsign: strings.ToUpper(strings.TrimSpace(callsign))}
+	if a.lookup == nil || st.Callsign == "" {
+		return st
+	}
+	if lr, err := a.lookup.Lookup(a.ctx, st.Callsign); err == nil {
+		st.Name, st.QTH, st.Country = lr.Name, lr.QTH, lr.Country
+		st.DXCC, st.CQ, st.ITU = lr.DXCC, lr.CQZ, lr.ITUZ
+	}
+	return st
+}
+
+// NetOpen starts a live session for the given net (clears any prior session).
+func (a *App) NetOpen(id string) error {
+	if a.netStore == nil {
+		return fmt.Errorf("net store unavailable")
+	}
+	if _, ok := a.netStore.Get(id); !ok {
+		return fmt.Errorf("net not found")
+	}
+	a.netMu.Lock()
+	a.netOpenID, a.netActive = id, nil
+	a.netMu.Unlock()
+	return nil
+}
+
+// NetClose ends the live session (does NOT log remaining actives — the operator
+// moves each station back to the roster side to log it before closing).
+func (a *App) NetClose() {
+	a.netMu.Lock()
+	a.netOpenID, a.netActive = "", nil
+	a.netMu.Unlock()
+}
+
+// NetOpenID returns the id of the currently open net ("" = none).
+func (a *App) NetOpenID() string {
+	a.netMu.Lock()
+	defer a.netMu.Unlock()
+	return a.netOpenID
+}
+
+// NetActiveList returns the stations currently on the air, in check-in order.
+func (a *App) NetActiveList() []netActiveEntry {
+	a.netMu.Lock()
+	defer a.netMu.Unlock()
+	out := make([]netActiveEntry, len(a.netActive))
+	for i, e := range a.netActive {
+		out[i] = *e
+	}
+	return out
+}
+
+// NetActivate puts a station on the air (records time_on, seeds defaults from
+// the net + roster). No-op if already active. The net must be open.
+func (a *App) NetActivate(callsign string) (netActiveEntry, error) {
+	call := strings.ToUpper(strings.TrimSpace(callsign))
+	if call == "" {
+		return netActiveEntry{}, fmt.Errorf("callsign required")
+	}
+	a.netMu.Lock()
+	defer a.netMu.Unlock()
+	if a.netOpenID == "" {
+		return netActiveEntry{}, fmt.Errorf("no net open")
+	}
+	for _, e := range a.netActive {
+		if e.Callsign == call {
+			return *e, nil // already on the air
+		}
+	}
+	e := &netActiveEntry{Callsign: call, TimeOn: time.Now().UTC()}
+	if net, ok := a.netStore.Get(a.netOpenID); ok {
+		e.RSTSent, e.RSTRcvd, e.Comment = net.DefaultRSTSent, net.DefaultRSTRcvd, net.DefaultComment
+		for _, st := range net.Stations {
+			if strings.EqualFold(st.Callsign, call) {
+				e.Name, e.QTH, e.Country = st.Name, st.QTH, st.Country
+				break
+			}
+		}
+	}
+	if e.RSTSent == "" {
+		e.RSTSent = "59"
+	}
+	if e.RSTRcvd == "" {
+		e.RSTRcvd = "59"
+	}
+	a.netActive = append(a.netActive, e)
+	return *e, nil
+}
+
+// NetUpdateActive edits the live fields (report/QTH/name/comment) of a station
+// already on the air. TimeOn is preserved.
+func (a *App) NetUpdateActive(e netActiveEntry) error {
+	call := strings.ToUpper(strings.TrimSpace(e.Callsign))
+	a.netMu.Lock()
+	defer a.netMu.Unlock()
+	for _, cur := range a.netActive {
+		if cur.Callsign == call {
+			cur.Name, cur.QTH, cur.Country = e.Name, e.QTH, e.Country
+			cur.RSTSent, cur.RSTRcvd, cur.Comment = e.RSTSent, e.RSTRcvd, e.Comment
+			return nil
+		}
+	}
+	return fmt.Errorf("station not active")
+}
+
+// NetDeactivate ends a station's QSO: it logs the contact to the active logbook
+// (live CAT freq/mode, time_on→now) and removes it from the session. Returns
+// the new QSO id.
+func (a *App) NetDeactivate(callsign string) (int64, error) {
+	call := strings.ToUpper(strings.TrimSpace(callsign))
+	a.netMu.Lock()
+	var entry *netActiveEntry
+	idx := -1
+	for i, e := range a.netActive {
+		if e.Callsign == call {
+			entry, idx = e, i
+			break
+		}
+	}
+	if entry == nil {
+		a.netMu.Unlock()
+		return 0, fmt.Errorf("station not active")
+	}
+	a.netActive = append(a.netActive[:idx], a.netActive[idx+1:]...)
+	a.netMu.Unlock()
+
+	// Frequency/mode come live from the rig; fall back to the last UI-reported
+	// values when CAT is off.
+	var st cat.RigState
+	if a.cat != nil {
+		st = a.cat.State()
+	}
+	freq, band, mode := st.FreqHz, st.Band, st.Mode
+	if freq == 0 {
+		a.liveActMu.Lock()
+		freq, band, mode = a.liveFreqHz, a.liveBand, a.liveMode
+		a.liveActMu.Unlock()
+	}
+	if band == "" && freq > 0 {
+		band = bandForHz(freq)
+	}
+	q := qso.QSO{
+		Callsign:   call,
+		QSODate:    entry.TimeOn,
+		QSODateOff: time.Now().UTC(),
+		Band:       band,
+		Mode:       mode,
+		RSTSent:    entry.RSTSent,
+		RSTRcvd:    entry.RSTRcvd,
+		Name:       entry.Name,
+		QTH:        entry.QTH,
+		Comment:    entry.Comment,
+	}
+	if freq > 0 {
+		f := freq
+		q.FreqHz = &f
+	}
+	return a.AddQSO(q)
+}
+
 // ── E-mail / SMTP (send QSO recordings) ───────────────────────────────
 
 const (

frontend/src/App.tsx

@@ -66,6 +66,7 @@ import { ShutdownProgress } from '@/components/ShutdownProgress';
 import { ClusterGrid } from '@/components/ClusterGrid';
 import { cleanSpotter, inferSpotMode, spotModeCategory, spotStatusKey } from '@/lib/spot';
 import { WorkedBeforeGrid } from '@/components/WorkedBeforeGrid';
+import { NetControlPanel } from '@/components/NetControlPanel';
 import { BulkEditModal } from '@/components/BulkEditModal';
 import { ChatPanel, type ChatMsg, type ChatPresence } from '@/components/ChatPopover';
 import { DetailsPanel, type DetailsState } from '@/components/DetailsPanel';
@@ -695,6 +696,10 @@ export default function App() {
   }
   const chatShown = chatOpen && chatAvailable;
 
+  // NET Control tab — enabled from Tools (persisted; once on it's a tab like Cluster).
+  const [netEnabled, setNetEnabled] = useState(() => localStorage.getItem('opslog.netEnabled') === '1');
+  useEffect(() => { localStorage.setItem('opslog.netEnabled', netEnabled ? '1' : '0'); }, [netEnabled]);
+
   const [dvkEnabled, setDvkEnabled] = useState(false);
   const [dvkMsgs, setDvkMsgs] = useState<DVKMsg[]>([]);
   const [dvkStat, setDvkStat] = useState<DVKStat>({ recording: false, playing: false, rec_slot: 0 });
@@ -1709,8 +1714,6 @@ export default function App() {
       };
       applyAwardRefs(payload, details.award_refs ?? '', awardFieldRef.current);
       await AddQSO(payload);
-      // Same green toast as a QSL upload, so the op gets visual confirmation.
-      showToast(`QSO logged — ${payload.callsign}${band ? ` · ${band}` : ''}${mode ? ` ${mode}` : ''}`);
       resetEntry(); // clears the call AND the Worked-before matrix
       callsignRef.current?.focus(); // return focus to the call field, wherever it was (e.g. Name)
       await refresh();
@@ -2104,6 +2107,8 @@ export default function App() {
       { type: 'item', label: dvkEnabled ? '✓ Digital Voice Keyer' : 'Digital Voice Keyer', action: 'tools.dvk' },
       { type: 'item', label: cwEnabled ? '✓ CW decoder (RX audio)' : 'CW decoder (RX audio)', action: 'tools.cwdecoder' },
       { type: 'separator' },
+      { type: 'item', label: netEnabled ? '✓ NET Control' : 'NET Control', action: 'tools.net' },
+      { type: 'separator' },
       // Maintenance — bumped here while we only have one entry. Will move
       // to a Tools → Maintenance submenu once Clublog + LoTW refresh land.
       { type: 'item', label: ctyRefreshing ? 'Refreshing cty.dat…' : 'Refresh cty.dat', action: 'tools.refreshCty', disabled: ctyRefreshing },
@@ -2112,7 +2117,7 @@ export default function App() {
     { name: 'help', label: 'Help', items: [
       { type: 'item', label: 'About OpsLog', action: 'help.about' },
     ]},
-  ], [total, selectedId, selectedIds, ctyRefreshing, refsDownloading, exporting, wkEnabled, dvkEnabled, cwEnabled]);
+  ], [total, selectedId, selectedIds, ctyRefreshing, refsDownloading, exporting, wkEnabled, dvkEnabled, cwEnabled, netEnabled]);
 
   function handleMenu(action: string) {
     switch (action) {
@@ -2130,6 +2135,7 @@ export default function App() {
       case 'tools.winkeyer':    wkSetEnabled(!wkEnabled); break;
       case 'tools.dvk':         setDvkEnabled((v) => !v); break;
       case 'tools.cwdecoder':   toggleCwDecoder(); break;
+      case 'tools.net':         setNetEnabled((v) => { const nv = !v; if (nv) setActiveTab('net'); return nv; }); break;
       case 'tools.refreshCty':  refreshCtyDat(); break;
       case 'tools.downloadRefs': downloadRefs(); break;
       case 'help.about':        setShowAbout(true); break;
@@ -3461,6 +3467,21 @@ export default function App() {
               </TabsTrigger>
               <TabsTrigger value="awards">Awards</TabsTrigger>
               <TabsTrigger value="bandmap">Band Map</TabsTrigger>
+              {netEnabled && (
+                <TabsTrigger value="net" className="gap-1.5">
+                  Net
+                  <span
+                    role="button"
+                    aria-label="Close Net"
+                    title="Close"
+                    className="inline-flex items-center justify-center size-4 rounded hover:bg-foreground/10 text-muted-foreground hover:text-foreground"
+                    onPointerDown={(e) => { e.stopPropagation(); }}
+                    onClick={(e) => { e.stopPropagation(); setNetEnabled(false); setActiveTab((t) => (t === 'net' ? 'recent' : t)); }}
+                  >
+                    <X className="size-3" />
+                  </span>
+                </TabsTrigger>
+              )}
               {catState.backend === 'flex' && <TabsTrigger value="flex">FlexRadio</TabsTrigger>}
               {catState.backend === 'icom' && <TabsTrigger value="icom">Icom</TabsTrigger>}
               {/* Not a tab — QRZ blocks embedding, so this opens the call's
@@ -3788,6 +3809,12 @@ export default function App() {
             {/* Band Map: several bands shown side-by-side (panadapter-style
                 strips). Pick bands with the chips; each strip is clickable to
                 tune the rig. */}
+            {netEnabled && (
+              <TabsContent value="net" className="mt-0 flex flex-col min-h-0 flex-1">
+                <NetControlPanel onLogged={refresh} rstChoices={rstOptions(mode, rstLists)} />
+              </TabsContent>
+            )}
+
             <TabsContent value="bandmap" className="mt-0 flex flex-col min-h-0 flex-1">
               <div className="flex items-center gap-1 px-3 py-1.5 border-b border-border/60 shrink-0 flex-wrap">
                 <span className="text-xs text-muted-foreground mr-1">Bands:</span>

frontend/src/components/NetControlPanel.tsx

@@ -0,0 +1,386 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import {
+  AllCommunityModule, ModuleRegistry, themeQuartz,
+  type ColDef, type RowDoubleClickedEvent, type CellValueChangedEvent,
+} from 'ag-grid-community';
+import { AgGridReact } from 'ag-grid-react';
+import { Plus, Trash2, Radio, PlusCircle, MinusCircle, Search, UserPlus } from 'lucide-react';
+import {
+  Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription,
+} from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Badge } from '@/components/ui/badge';
+import {
+  NetList, NetCreate, NetRename, NetDelete, NetOpen, NetClose, NetOpenID,
+  NetRoster, NetRosterUpsert, NetRosterRemove, NetLookup,
+  NetActiveList, NetActivate, NetDeactivate, NetUpdateActive,
+} from '@/../wailsjs/go/main/App';
+import { netctl } from '@/../wailsjs/go/models';
+
+ModuleRegistry.registerModules([AllCommunityModule]);
+
+const hamlogTheme = themeQuartz.withParams({
+  fontFamily: 'inherit',
+  fontSize: 12.5,
+  backgroundColor: '#faf6ea',
+  foregroundColor: '#2a2419',
+  headerBackgroundColor: '#e8dfc9',
+  headerTextColor: '#5a4f3a',
+  headerFontWeight: 600,
+  oddRowBackgroundColor: '#f5efe0',
+  rowHoverColor: '#ecdcb4',
+  selectedRowBackgroundColor: '#f0d9a8',
+  borderColor: '#c8b994',
+  rowBorder: { color: '#d8c9a8', width: 1 },
+  columnBorder: { color: '#d8c9a8', width: 1 },
+  cellHorizontalPadding: 10,
+  rowHeight: 30,
+  headerHeight: 32,
+  spacing: 4,
+  accentColor: '#b8410c',
+  iconSize: 12,
+});
+
+type Net = netctl.Net;
+type Station = netctl.Station;
+type Active = {
+  callsign: string; name: string; qth: string; country: string;
+  rst_sent: string; rst_rcvd: string; comment: string; time_on: any;
+};
+
+function fmtTimeOn(s: any): string {
+  if (!s) return '';
+  const d = new Date(s);
+  if (isNaN(d.getTime())) return '';
+  const p = (n: number) => String(n).padStart(2, '0');
+  return `${p(d.getUTCHours())}:${p(d.getUTCMinutes())}:${p(d.getUTCSeconds())}Z`;
+}
+
+const emptyStation = (): Station => netctl.Station.createFrom({ callsign: '' });
+
+export function NetControlPanel({ onLogged, rstChoices }: { onLogged?: () => void; rstChoices?: string[] }) {
+  const [nets, setNets] = useState<Net[]>([]);
+  const [selId, setSelId] = useState<string>('');
+  const [openId, setOpenId] = useState<string>('');
+  const [roster, setRoster] = useState<Station[]>([]);
+  const [active, setActive] = useState<Active[]>([]);
+  const [error, setError] = useState('');
+
+  // Add/edit-contact dialog.
+  const [contactOpen, setContactOpen] = useState(false);
+  const [contact, setContact] = useState<Station>(emptyStation());
+  const [looking, setLooking] = useState(false);
+
+  const activeGrid = useRef<any>(null);
+  const rosterGrid = useRef<any>(null);
+
+  const isOpen = openId !== '' && openId === selId;
+
+  const refreshNets = useCallback(async () => {
+    try {
+      const [list, oid] = await Promise.all([NetList(), NetOpenID()]);
+      const arr = (list ?? []) as Net[];
+      setNets(arr);
+      setOpenId(oid ?? '');
+      setSelId((cur) => cur || (oid ?? '') || (arr[0]?.id ?? ''));
+    } catch (e: any) { setError(String(e?.message ?? e)); }
+  }, []);
+
+  const refreshRoster = useCallback(async (id: string) => {
+    if (!id) { setRoster([]); return; }
+    try { setRoster(((await NetRoster(id)) ?? []) as Station[]); }
+    catch (e: any) { setError(String(e?.message ?? e)); }
+  }, []);
+
+  const refreshActive = useCallback(async () => {
+    try { setActive(((await NetActiveList()) ?? []) as Active[]); }
+    catch { /* ignore */ }
+  }, []);
+
+  useEffect(() => { refreshNets(); }, [refreshNets]);
+  useEffect(() => { refreshRoster(selId); }, [selId, refreshRoster]);
+  useEffect(() => { if (isOpen) refreshActive(); else setActive([]); }, [isOpen, refreshActive]);
+
+  // The roster side hides callsigns that are currently on the air (they live in
+  // the left grid until logged), mirroring Log4OM's two-list behaviour.
+  const activeCalls = useMemo(() => new Set(active.map((a) => a.callsign.toUpperCase())), [active]);
+  const rosterShown = useMemo(
+    () => roster.filter((s) => !activeCalls.has((s.callsign ?? '').toUpperCase())),
+    [roster, activeCalls],
+  );
+
+  async function newNet() {
+    const name = window.prompt('New NET name:');
+    if (!name?.trim()) return;
+    try { const n = await NetCreate(name.trim()); await refreshNets(); setSelId(n.id); }
+    catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+  async function renameNet() {
+    if (!selId) return;
+    const cur = nets.find((n) => n.id === selId);
+    const name = window.prompt('Rename NET:', cur?.name ?? '');
+    if (!name?.trim()) return;
+    try { await NetRename(selId, name.trim()); await refreshNets(); }
+    catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+  async function deleteNet() {
+    if (!selId) return;
+    const cur = nets.find((n) => n.id === selId);
+    if (!window.confirm(`Delete NET "${cur?.name}" and its roster? This cannot be undone.`)) return;
+    try { await NetDelete(selId); setSelId(''); await refreshNets(); }
+    catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+  async function toggleOpen() {
+    try {
+      if (isOpen) {
+        if (active.length > 0 &&
+          !window.confirm(`${active.length} station(s) still on the air will be dropped WITHOUT logging. Close anyway?`)) return;
+        await NetClose(); setOpenId('');
+      } else {
+        await NetOpen(selId); setOpenId(selId); await refreshActive();
+      }
+    } catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+
+  // Roster → active (start QSO).
+  async function activate(call: string) {
+    if (!isOpen || !call) return;
+    try { await NetActivate(call); await refreshActive(); }
+    catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+  // Active → logged (end QSO, removed from session, written to the logbook).
+  async function deactivate(call: string) {
+    if (!call) return;
+    try { await NetDeactivate(call); await refreshActive(); onLogged?.(); }
+    catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+
+  function onActiveDblClick(e: RowDoubleClickedEvent<Active>) {
+    // Double-clicking a non-editable area logs the QSO; editable cells open the
+    // editor instead (ag-grid handles that before this fires only for blanks),
+    // so we gate on the column being the callsign.
+    if (e.data && (e as any).column?.getColId?.() === 'callsign') deactivate(e.data.callsign);
+  }
+
+  async function onActiveCellChanged(e: CellValueChangedEvent<Active>) {
+    const d = e.data;
+    if (!d) return;
+    try {
+      await NetUpdateActive({
+        callsign: d.callsign, name: d.name ?? '', qth: d.qth ?? '', country: d.country ?? '',
+        rst_sent: d.rst_sent ?? '', rst_rcvd: d.rst_rcvd ?? '', comment: d.comment ?? '', time_on: d.time_on,
+      } as any);
+    } catch (err: any) { setError(String(err?.message ?? err)); }
+  }
+
+  // Add-contact dialog.
+  function openAddContact() { setContact(emptyStation()); setContactOpen(true); }
+  async function lookupContact() {
+    const call = (contact.callsign ?? '').trim();
+    if (!call) return;
+    setLooking(true);
+    try {
+      const r = await NetLookup(call);
+      setContact((c) => netctl.Station.createFrom({
+        ...c, callsign: (r.callsign || call).toUpperCase(),
+        name: r.name || c.name, qth: r.qth || c.qth, country: r.country || c.country,
+        dxcc: r.dxcc || c.dxcc, itu: r.itu || c.itu, cq: r.cq || c.cq,
+      }));
+    } catch (e: any) { setError(String(e?.message ?? e)); }
+    finally { setLooking(false); }
+  }
+  async function saveContact() {
+    const call = (contact.callsign ?? '').trim().toUpperCase();
+    if (!call || !selId) return;
+    try {
+      await NetRosterUpsert(selId, netctl.Station.createFrom({ ...contact, callsign: call }));
+      setContactOpen(false);
+      await refreshRoster(selId);
+    } catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+  async function removeSelectedRoster() {
+    const sel = (rosterGrid.current?.api?.getSelectedRows() ?? []) as Station[];
+    if (sel.length === 0) return;
+    if (!window.confirm(`Remove ${sel.length} station(s) from this NET's roster?`)) return;
+    try {
+      for (const s of sel) await NetRosterRemove(selId, s.callsign);
+      await refreshRoster(selId);
+    } catch (e: any) { setError(String(e?.message ?? e)); }
+  }
+
+  const activeCols = useMemo<ColDef<Active>[]>(() => [
+    { colId: 'callsign', headerName: 'Callsign', field: 'callsign', width: 110, cellClass: 'font-mono font-semibold' },
+    { headerName: 'Name', field: 'name', flex: 1, editable: true },
+    { headerName: 'QTH', field: 'qth', flex: 1, editable: true },
+    { headerName: 'Time on', valueGetter: (p) => fmtTimeOn(p.data?.time_on), width: 90, cellClass: 'font-mono text-[11px]' },
+    { headerName: 'Country', field: 'country', width: 120 },
+    {
+      headerName: 'RST S', field: 'rst_sent', width: 80, editable: true, cellClass: 'font-mono',
+      cellEditor: 'agSelectCellEditor', cellEditorParams: { values: rstChoices ?? [] },
+    },
+    {
+      headerName: 'RST R', field: 'rst_rcvd', width: 80, editable: true, cellClass: 'font-mono',
+      cellEditor: 'agSelectCellEditor', cellEditorParams: { values: rstChoices ?? [] },
+    },
+    { headerName: 'Comment', field: 'comment', flex: 1.5, editable: true },
+  ], [rstChoices]);
+
+  const rosterCols = useMemo<ColDef<Station>[]>(() => [
+    { headerName: 'Callsign', field: 'callsign', width: 110, cellClass: 'font-mono font-semibold' },
+    { headerName: 'Name', field: 'name', flex: 1 },
+    { headerName: 'QTH', field: 'qth', flex: 1 },
+    { headerName: 'Country', field: 'country', width: 130 },
+  ], []);
+
+  const defaultColDef = useMemo<ColDef>(() => ({ sortable: true, resizable: true, suppressMovable: false }), []);
+
+  return (
+    <div className="flex flex-col min-h-0 flex-1">
+      {/* Toolbar */}
+      <div className="flex items-center gap-2 px-3 py-2 border-b border-border/60 bg-muted/30">
+        <Button variant="outline" size="sm" className="h-8" onClick={newNet}>
+          <Plus className="size-3.5" /> New NET
+        </Button>
+        <select
+          className="h-8 rounded-md border border-input bg-background px-2 text-sm min-w-[180px]"
+          value={selId}
+          disabled={isOpen}
+          onChange={(e) => setSelId(e.target.value)}
+          title={isOpen ? 'Close the NET to switch' : 'Select a NET'}
+        >
+          <option value="">— select a NET —</option>
+          {nets.map((n) => <option key={n.id} value={n.id}>{n.name}</option>)}
+        </select>
+        <Button variant={isOpen ? 'destructive' : 'default'} size="sm" className="h-8" disabled={!selId} onClick={toggleOpen}>
+          <Radio className="size-3.5" /> {isOpen ? 'Close NET' : 'Open NET'}
+        </Button>
+        <Button variant="ghost" size="sm" className="h-8" disabled={!selId || isOpen} onClick={renameNet}>Rename</Button>
+        <Button variant="ghost" size="sm" className="h-8 text-rose-700" disabled={!selId || isOpen} onClick={deleteNet}>
+          <Trash2 className="size-3.5" /> Delete
+        </Button>
+
+        <div className="flex-1" />
+        {isOpen && <Badge className="bg-emerald-600 text-white tracking-wider">NET OPEN</Badge>}
+        <span className="text-[11px] text-muted-foreground">
+          On air: <strong className="text-foreground">{active.length}</strong> ·
+          Roster: <strong className="text-foreground">{roster.length}</strong>
+        </span>
+        {error && <Badge variant="destructive" className="max-w-[280px] truncate" title={error}>{error}</Badge>}
+      </div>
+
+      <div className="flex min-h-0 flex-1">
+        {/* ACTIVE USERS (left) */}
+        <div className="flex flex-col min-h-0 flex-1 border-r border-border/60">
+          <div className="flex items-center gap-2 px-3 py-1.5 bg-red-600 text-white text-[11px] font-semibold uppercase tracking-wider">
+            On air — active QSOs
+            <span className="ml-auto font-normal normal-case opacity-90">double-click callsign → log &amp; end QSO</span>
+          </div>
+          <div style={{ flex: 1, minHeight: 0, position: 'relative' }}>
+            <div style={{ position: 'absolute', inset: 0 }}>
+              <AgGridReact<Active>
+                ref={activeGrid}
+                theme={hamlogTheme}
+                rowData={active}
+                columnDefs={activeCols}
+                defaultColDef={defaultColDef}
+                onRowDoubleClicked={onActiveDblClick}
+                onCellValueChanged={onActiveCellChanged}
+                animateRows={false}
+                getRowId={(p) => String((p.data as any).callsign)}
+                stopEditingWhenCellsLoseFocus
+              />
+            </div>
+          </div>
+          {isOpen && active.length > 0 && (
+            <div className="px-3 py-1.5 border-t border-border/60 bg-muted/30 flex items-center gap-2">
+              <Button variant="ghost" size="sm" className="h-7 text-[11px]"
+                onClick={() => { const r = activeGrid.current?.api?.getSelectedRows?.()?.[0] as Active; if (r) deactivate(r.callsign); }}>
+                <MinusCircle className="size-3.5" /> Log &amp; end selected
+              </Button>
+            </div>
+          )}
+        </div>
+
+        {/* NET USERS / roster (right) */}
+        <div className="flex flex-col min-h-0 w-[40%] max-w-[560px]">
+          <div className="flex items-center gap-2 px-3 py-1.5 bg-emerald-700 text-white text-[11px] font-semibold uppercase tracking-wider">
+            NET users — roster
+            <span className="ml-auto font-normal normal-case opacity-90">double-click → put on air</span>
+          </div>
+          <div style={{ flex: 1, minHeight: 0, position: 'relative' }}>
+            <div style={{ position: 'absolute', inset: 0 }}>
+              <AgGridReact<Station>
+                ref={rosterGrid}
+                theme={hamlogTheme}
+                rowData={rosterShown}
+                columnDefs={rosterCols}
+                defaultColDef={defaultColDef}
+                rowSelection={{ mode: 'multiRow', checkboxes: false, headerCheckbox: false, enableClickSelection: true }}
+                onRowDoubleClicked={(e) => e.data && activate(e.data.callsign)}
+                animateRows={false}
+                getRowId={(p) => String((p.data as any).callsign)}
+              />
+            </div>
+          </div>
+          <div className="px-3 py-1.5 border-t border-border/60 bg-muted/30 flex items-center gap-2">
+            <Button variant="ghost" size="sm" className="h-7 text-[11px]" disabled={!selId} onClick={openAddContact}>
+              <UserPlus className="size-3.5" /> Add contact
+            </Button>
+            <Button variant="ghost" size="sm" className="h-7 text-[11px] text-rose-700" disabled={!selId} onClick={removeSelectedRoster}>
+              <MinusCircle className="size-3.5" /> Remove
+            </Button>
+            {isOpen && (
+              <Button variant="ghost" size="sm" className="h-7 text-[11px] ml-auto"
+                onClick={() => { const r = rosterGrid.current?.api?.getSelectedRows?.()?.[0] as Station; if (r) activate(r.callsign); }}>
+                <PlusCircle className="size-3.5" /> Put selected on air
+              </Button>
+            )}
+          </div>
+        </div>
+      </div>
+
+      {/* Add / edit contact dialog */}
+      <Dialog open={contactOpen} onOpenChange={setContactOpen}>
+        <DialogContent className="max-w-md">
+          <DialogHeader>
+            <DialogTitle>Add contact to NET</DialogTitle>
+            <DialogDescription>Saved in this NET's roster (reused next time you open it).</DialogDescription>
+          </DialogHeader>
+          <div className="grid gap-3 px-5 py-2">
+            <div className="flex items-end gap-2">
+              <div className="flex-1">
+                <Label className="text-[11px]">Callsign</Label>
+                <Input className="font-mono uppercase" value={contact.callsign ?? ''}
+                  onChange={(e) => setContact((c) => netctl.Station.createFrom({ ...c, callsign: e.target.value.toUpperCase() }))}
+                  onKeyDown={(e) => { if (e.key === 'Enter') lookupContact(); }} />
+              </div>
+              <Button variant="outline" size="sm" className="h-9" onClick={lookupContact} disabled={looking || !(contact.callsign ?? '').trim()}>
+                <Search className="size-3.5" /> {looking ? '…' : 'Search'}
+              </Button>
+            </div>
+            <div>
+              <Label className="text-[11px]">Name</Label>
+              <Input value={contact.name ?? ''} onChange={(e) => setContact((c) => netctl.Station.createFrom({ ...c, name: e.target.value }))} />
+            </div>
+            <div>
+              <Label className="text-[11px]">QTH</Label>
+              <Input value={contact.qth ?? ''} onChange={(e) => setContact((c) => netctl.Station.createFrom({ ...c, qth: e.target.value }))} />
+            </div>
+            <div>
+              <Label className="text-[11px]">Country</Label>
+              <Input value={contact.country ?? ''} onChange={(e) => setContact((c) => netctl.Station.createFrom({ ...c, country: e.target.value }))} />
+            </div>
+          </div>
+          <DialogFooter>
+            <Button variant="ghost" size="sm" onClick={() => setContactOpen(false)}>Cancel</Button>
+            <Button size="sm" onClick={saveContact} disabled={!(contact.callsign ?? '').trim()}>
+              <PlusCircle className="size-3.5" /> Save in NET
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+    </div>
+  );
+}

frontend/src/components/QSLManagerModal.tsx

@@ -283,7 +283,7 @@ export function QSLManagerPanel({ onEditQSO }: { onEditQSO?: (id: number) => voi
           <label className="text-[10px] uppercase tracking-wider text-muted-foreground">Service</label>
           <Select value={service} onValueChange={setService}>
             <SelectTrigger className="h-8 w-36"><SelectValue /></SelectTrigger>
-            <SelectContent>{SERVICES.map((s) => <SelectItem key={s.v} value={s.v}>{s.label}</SelectItem>)}</SelectContent>
+            <SelectContent>{[...SERVICES].sort((a, b) => a.label.localeCompare(b.label)).map((s) => <SelectItem key={s.v} value={s.v}>{s.label}</SelectItem>)}</SelectContent>
           </Select>
         </div>
         {uploadCall && (

frontend/wailsjs/go/main/App.d.ts

@@ -16,6 +16,7 @@ import {audio} from '../models';
 import {operating} from '../models';
 import {udp} from '../models';
 import {lookup} from '../models';
+import {netctl} from '../models';
 
 export function ADIFFields():Promise<Array<adif.FieldDef>>;
 
@@ -371,6 +372,38 @@ export function LookupCallsign(arg1:string):Promise<lookup.Result>;
 
 export function MoveDatabase(arg1:string):Promise<void>;
 
+export function NetActivate(arg1:string):Promise<main.netActiveEntry>;
+
+export function NetActiveList():Promise<Array<main.netActiveEntry>>;
+
+export function NetClose():Promise<void>;
+
+export function NetCreate(arg1:string):Promise<netctl.Net>;
+
+export function NetDeactivate(arg1:string):Promise<number>;
+
+export function NetDelete(arg1:string):Promise<void>;
+
+export function NetList():Promise<Array<netctl.Net>>;
+
+export function NetLookup(arg1:string):Promise<netctl.Station>;
+
+export function NetOpen(arg1:string):Promise<void>;
+
+export function NetOpenID():Promise<string>;
+
+export function NetRename(arg1:string,arg2:string):Promise<void>;
+
+export function NetRoster(arg1:string):Promise<Array<netctl.Station>>;
+
+export function NetRosterRemove(arg1:string,arg2:string):Promise<void>;
+
+export function NetRosterUpsert(arg1:string,arg2:netctl.Station):Promise<void>;
+
+export function NetSetDefaults(arg1:string,arg2:string,arg3:string,arg4:string):Promise<void>;
+
+export function NetUpdateActive(arg1:main.netActiveEntry):Promise<void>;
+
 export function OpenADIFFile():Promise<string>;
 
 export function OpenDatabase(arg1:string):Promise<void>;

frontend/wailsjs/go/main/App.js

@@ -710,6 +710,70 @@ export function MoveDatabase(arg1) {
   return window['go']['main']['App']['MoveDatabase'](arg1);
 }
 
+export function NetActivate(arg1) {
+  return window['go']['main']['App']['NetActivate'](arg1);
+}
+
+export function NetActiveList() {
+  return window['go']['main']['App']['NetActiveList']();
+}
+
+export function NetClose() {
+  return window['go']['main']['App']['NetClose']();
+}
+
+export function NetCreate(arg1) {
+  return window['go']['main']['App']['NetCreate'](arg1);
+}
+
+export function NetDeactivate(arg1) {
+  return window['go']['main']['App']['NetDeactivate'](arg1);
+}
+
+export function NetDelete(arg1) {
+  return window['go']['main']['App']['NetDelete'](arg1);
+}
+
+export function NetList() {
+  return window['go']['main']['App']['NetList']();
+}
+
+export function NetLookup(arg1) {
+  return window['go']['main']['App']['NetLookup'](arg1);
+}
+
+export function NetOpen(arg1) {
+  return window['go']['main']['App']['NetOpen'](arg1);
+}
+
+export function NetOpenID() {
+  return window['go']['main']['App']['NetOpenID']();
+}
+
+export function NetRename(arg1, arg2) {
+  return window['go']['main']['App']['NetRename'](arg1, arg2);
+}
+
+export function NetRoster(arg1) {
+  return window['go']['main']['App']['NetRoster'](arg1);
+}
+
+export function NetRosterRemove(arg1, arg2) {
+  return window['go']['main']['App']['NetRosterRemove'](arg1, arg2);
+}
+
+export function NetRosterUpsert(arg1, arg2) {
+  return window['go']['main']['App']['NetRosterUpsert'](arg1, arg2);
+}
+
+export function NetSetDefaults(arg1, arg2, arg3, arg4) {
+  return window['go']['main']['App']['NetSetDefaults'](arg1, arg2, arg3, arg4);
+}
+
+export function NetUpdateActive(arg1) {
+  return window['go']['main']['App']['NetUpdateActive'](arg1);
+}
+
 export function OpenADIFFile() {
   return window['go']['main']['App']['OpenADIFFile']();
 }

frontend/wailsjs/go/models.ts

@@ -2004,6 +2004,126 @@ export namespace main {
 		    return a;
 		}
 	}
+	export class netActiveEntry {
+	    callsign: string;
+	    name: string;
+	    qth: string;
+	    country: string;
+	    rst_sent: string;
+	    rst_rcvd: string;
+	    comment: string;
+	    // Go type: time
+	    time_on: any;
+	
+	    static createFrom(source: any = {}) {
+	        return new netActiveEntry(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.callsign = source["callsign"];
+	        this.name = source["name"];
+	        this.qth = source["qth"];
+	        this.country = source["country"];
+	        this.rst_sent = source["rst_sent"];
+	        this.rst_rcvd = source["rst_rcvd"];
+	        this.comment = source["comment"];
+	        this.time_on = this.convertValues(source["time_on"], null);
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+
+}
+
+export namespace netctl {
+	
+	export class Station {
+	    callsign: string;
+	    name?: string;
+	    qth?: string;
+	    country?: string;
+	    dxcc?: number;
+	    itu?: number;
+	    cq?: number;
+	    groups?: string;
+	    sig?: string;
+	    sig_info?: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new Station(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.callsign = source["callsign"];
+	        this.name = source["name"];
+	        this.qth = source["qth"];
+	        this.country = source["country"];
+	        this.dxcc = source["dxcc"];
+	        this.itu = source["itu"];
+	        this.cq = source["cq"];
+	        this.groups = source["groups"];
+	        this.sig = source["sig"];
+	        this.sig_info = source["sig_info"];
+	    }
+	}
+	export class Net {
+	    id: string;
+	    name: string;
+	    default_rst_sent?: string;
+	    default_rst_rcvd?: string;
+	    default_comment?: string;
+	    stations?: Station[];
+	
+	    static createFrom(source: any = {}) {
+	        return new Net(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.id = source["id"];
+	        this.name = source["name"];
+	        this.default_rst_sent = source["default_rst_sent"];
+	        this.default_rst_rcvd = source["default_rst_rcvd"];
+	        this.default_comment = source["default_comment"];
+	        this.stations = this.convertValues(source["stations"], Station);
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
 
 }
 

internal/netctl/netctl.go

@@ -0,0 +1,234 @@
+// Package netctl persists "NET" definitions and their station rosters for the
+// NET Control feature (managing a directed net / round-table on a frequency).
+//
+// A NET is a named net (e.g. "French QSO", "QSO des Brasses") with a roster of
+// stations that habitually check in. The roster grows over time as you add new
+// callsigns. Storage is a single JSON file in the data dir — global/shared
+// across all logbooks (a net like "French QSO" is reused whatever logbook is
+// open). The QSOs themselves are logged into the active logbook by the caller;
+// this package only owns the net definitions + rosters, not the live session.
+package netctl
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+// Station is one roster entry: a station registered in a net.
+type Station struct {
+	Callsign string `json:"callsign"`
+	Name     string `json:"name,omitempty"`
+	QTH      string `json:"qth,omitempty"`
+	Country  string `json:"country,omitempty"`
+	DXCC     int    `json:"dxcc,omitempty"`
+	ITU      int    `json:"itu,omitempty"`
+	CQ       int    `json:"cq,omitempty"`
+	Groups   string `json:"groups,omitempty"`
+	SIG      string `json:"sig,omitempty"`
+	SIGInfo  string `json:"sig_info,omitempty"`
+}
+
+// Net is a named net with default report values and a station roster.
+type Net struct {
+	ID             string    `json:"id"`
+	Name           string    `json:"name"`
+	DefaultRSTSent string    `json:"default_rst_sent,omitempty"`
+	DefaultRSTRcvd string    `json:"default_rst_rcvd,omitempty"`
+	DefaultComment string    `json:"default_comment,omitempty"`
+	Stations       []Station `json:"stations,omitempty"`
+}
+
+// Store is the persistent collection of nets, backed by a JSON file.
+type Store struct {
+	mu   sync.Mutex
+	path string
+	nets []Net
+}
+
+// Open loads the store from path (creating an empty one if the file is absent).
+func Open(path string) (*Store, error) {
+	s := &Store{path: path}
+	b, err := os.ReadFile(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return s, nil
+		}
+		return nil, err
+	}
+	if len(b) > 0 {
+		if err := json.Unmarshal(b, &s.nets); err != nil {
+			// Corrupt file: start empty rather than failing the whole app.
+			s.nets = nil
+		}
+	}
+	return s, nil
+}
+
+// save writes the current state to disk. Caller must hold s.mu.
+func (s *Store) save() error {
+	b, err := json.MarshalIndent(s.nets, "", "  ")
+	if err != nil {
+		return err
+	}
+	tmp := s.path + ".tmp"
+	if err := os.WriteFile(tmp, b, 0o644); err != nil {
+		return err
+	}
+	return os.Rename(tmp, s.path)
+}
+
+func newID() string { return strconv.FormatInt(time.Now().UnixNano(), 36) }
+
+// List returns a copy of all nets (with rosters), ordered by name.
+func (s *Store) List() []Net {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	out := make([]Net, len(s.nets))
+	copy(out, s.nets)
+	sort.Slice(out, func(i, j int) bool {
+		return strings.ToLower(out[i].Name) < strings.ToLower(out[j].Name)
+	})
+	return out
+}
+
+// find returns the index of the net with id, or -1. Caller must hold s.mu.
+func (s *Store) find(id string) int {
+	for i := range s.nets {
+		if s.nets[i].ID == id {
+			return i
+		}
+	}
+	return -1
+}
+
+// Create adds a new net with default reports of 59/59 and returns it.
+func (s *Store) Create(name string) (Net, error) {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return Net{}, fmt.Errorf("net name required")
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	for i := range s.nets {
+		if strings.EqualFold(s.nets[i].Name, name) {
+			return Net{}, fmt.Errorf("a net named %q already exists", name)
+		}
+	}
+	n := Net{ID: newID(), Name: name, DefaultRSTSent: "59", DefaultRSTRcvd: "59"}
+	s.nets = append(s.nets, n)
+	return n, s.save()
+}
+
+// Rename changes a net's name.
+func (s *Store) Rename(id, name string) error {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return fmt.Errorf("net name required")
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return fmt.Errorf("net not found")
+	}
+	s.nets[i].Name = name
+	return s.save()
+}
+
+// SetDefaults updates the per-net default report/comment values.
+func (s *Store) SetDefaults(id, rstSent, rstRcvd, comment string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return fmt.Errorf("net not found")
+	}
+	s.nets[i].DefaultRSTSent = rstSent
+	s.nets[i].DefaultRSTRcvd = rstRcvd
+	s.nets[i].DefaultComment = comment
+	return s.save()
+}
+
+// Delete removes a net and its roster.
+func (s *Store) Delete(id string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return fmt.Errorf("net not found")
+	}
+	s.nets = append(s.nets[:i], s.nets[i+1:]...)
+	return s.save()
+}
+
+// Get returns a copy of one net by id.
+func (s *Store) Get(id string) (Net, bool) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return Net{}, false
+	}
+	return s.nets[i], true
+}
+
+// Roster returns a net's stations, sorted by callsign.
+func (s *Store) Roster(id string) ([]Station, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return nil, fmt.Errorf("net not found")
+	}
+	out := make([]Station, len(s.nets[i].Stations))
+	copy(out, s.nets[i].Stations)
+	sort.Slice(out, func(a, b int) bool { return out[a].Callsign < out[b].Callsign })
+	return out, nil
+}
+
+// RosterUpsert adds st to the net's roster, or updates it if the callsign is
+// already present (matched case-insensitively; the callsign is stored upper).
+func (s *Store) RosterUpsert(id string, st Station) error {
+	st.Callsign = strings.ToUpper(strings.TrimSpace(st.Callsign))
+	if st.Callsign == "" {
+		return fmt.Errorf("callsign required")
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return fmt.Errorf("net not found")
+	}
+	for j := range s.nets[i].Stations {
+		if strings.EqualFold(s.nets[i].Stations[j].Callsign, st.Callsign) {
+			s.nets[i].Stations[j] = st
+			return s.save()
+		}
+	}
+	s.nets[i].Stations = append(s.nets[i].Stations, st)
+	return s.save()
+}
+
+// RosterRemove deletes a callsign from a net's roster.
+func (s *Store) RosterRemove(id, callsign string) error {
+	callsign = strings.ToUpper(strings.TrimSpace(callsign))
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	i := s.find(id)
+	if i < 0 {
+		return fmt.Errorf("net not found")
+	}
+	for j := range s.nets[i].Stations {
+		if strings.EqualFold(s.nets[i].Stations[j].Callsign, callsign) {
+			s.nets[i].Stations = append(s.nets[i].Stations[:j], s.nets[i].Stations[j+1:]...)
+			return s.save()
+		}
+	}
+	return nil // not present → nothing to do
+}