feat: Station Control amp parity + all amps, Help→Send log to F4BPO, bulk-edit frequency, fix Cluster midnight sort

- Station Control: the amplifier panel is now the exact same card as the FlexRadio panel (extracted shared AmpCard: OPERATE/STANDBY, ON/OFF, power level, output-power bar, live FWD/ID/temp meters). Every configured amp gets its own card — no dropdown.
- Help → "Send log to F4BPO" (only when SMTP is configured): e-mails opslog.log + previous session + crash log to the developer. New email.SendFiles for multi-attachment.
- Bulk edit: new "Frequency (MHz)" field sets freq_hz AND recomputes band; out-of-band values rejected. Fixes a run logged on a stale/default freq after CAT dropped.
- Cluster: Time column sorted lexically on the HHMMZ string, so spots after 0000Z sorted below 2359Z and looked frozen at the UTC rollover. Now sorts by real arrival time.
- Also folds in the DVK auto-CQ/2-column layout and Station Control dashboard batch (changelog 0.20.10, EN+FR).

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

@@ -762,6 +762,8 @@ export function RotatorStop():Promise<void>;
 
 export function RunBackupNow():Promise<string>;
 
+export function SMTPConfigured():Promise<boolean>;
+
 export function SPESetOperate(arg1:boolean):Promise<void>;
 
 export function SPESetPower(arg1:boolean):Promise<void>;
@@ -842,6 +844,8 @@ export function SendClusterSpot(arg1:string,arg2:number,arg3:string):Promise<voi
 
 export function SendEQSL(arg1:number,arg2:number,arg3:string):Promise<void>;
 
+export function SendLogToDeveloper():Promise<void>;
+
 export function SendQSORecordingEmail(arg1:number):Promise<void>;
 
 export function SetAlertEmailTo(arg1:string):Promise<void>;