feat(training): delete group button (admin only) on Training page

- Backend DELETE /api/groups/<gid> (admin, own-org enforced via _get_owned_group);
  cascades removal of the group's sessions. GroupStore.delete added.
- Training.vue: each group card gets a trash (Trash2 line icon) delete button shown only
  to admins (auth.isAdmin); confirm dialog; @click.stop so it doesn't navigate. Card
  restructured so the delete button is not inside the clickable router-link.
- test_user_journey: trainee cannot delete (403), admin deletes, group gone (404).
All suites pass. Rebuilt dist.

frontend/dist/assets/MyBoard-Bw1xIyZv.js

@@ -0,0 +1 @@
+import{_ as f,p as x,y as v,a as r,b as t,l as b,u as e,m as k,t as s,i as a,g as _,w as B,A as N,F as D,x as S,r as m,B as c,o as i,C as T}from"./index-CvsGOA4u.js";import{L as V}from"./layout-dashboard-k0A07o6y.js";const C={style:{margin:"0"}},L={key:0,class:"row stat-row"},M={class:"card stat"},z={class:"card stat won"},F={class:"card stat lost"},j={class:"card stat"},A={key:1,class:"card"},E={key:2,class:"card empty-state"},G={class:"card",style:{"margin-top":"20px"}},I={style:{"margin-top":"0"}},q={__name:"MyBoard",setup(H){const o=m([]),u=m([]),p=m(!0),y=c(()=>o.value.length),g=c(()=>o.value.filter(n=>n.my_outcome==="won").length),h=c(()=>o.value.filter(n=>n.my_outcome==="lost").length),w=c(()=>o.value.filter(n=>n.my_outcome==="not_tried").length);return x(async()=>{try{o.value=(await v.myBoard()).board||[],u.value=(await v.mySessions()).sessions||[]}finally{p.value=!1}}),(n,l)=>(i(),r("div",null,[t("div",null,[t("h2",C,[b(e(V),{size:22,"stroke-width":1.8,style:{"vertical-align":"-4px"}}),k(" "+s(e(a).t("myDashboard")),1)]),l[0]||(l[0]=t("div",{class:"muted",style:{"margin-top":"4px","margin-bottom":"16px"}},"สรุปผลการฝึกของตัวคุณเอง — ดูว่าปิดการขายได้กี่ครั้ง ยังฝึกกับใครบ้าง",-1))]),p.value?_("",!0):(i(),r("div",L,[t("div",M,[t("span",null,s(e(a).t("total")),1),t("strong",null,s(y.value),1)]),t("div",z,[t("span",null,s(e(a).t("won")),1),t("strong",null,s(g.value),1)]),t("div",F,[t("span",null,s(e(a).t("lost")),1),t("strong",null,s(h.value),1)]),t("div",j,[t("span",null,s(e(a).t("notTried")),1),t("strong",null,s(w.value),1)])])),p.value?(i(),r("div",A,[...l[1]||(l[1]=[t("div",{class:"skeleton",style:{height:"50px"}},null,-1)])])):o.value.length===0?(i(),r("div",E,[...l[2]||(l[2]=[t("strong",null,"No practice yet",-1),t("span",null,"Go to Training and try closing a sale with a persona.",-1)])])):_("",!0),B(t("div",G,[t("h3",I,s(e(a).t("mySessions")),1),(i(!0),r(D,null,S(u.value,d=>(i(),r("div",{key:d.id,style:{display:"flex","justify-content":"space-between",padding:"8px 0","border-bottom":"1px solid var(--border)"}},[t("span",null,s(d.persona_name),1),t("span",{class:T(["badge",d.outcome])},s(d.outcome==="won"?e(a).t("won"):e(a).t("lost")),3)]))),128))],512),[[N,u.value.length]])]))}},O=f(q,[["__scopeId","data-v-6767b6b8"]]);export{O as default};