feat: add UsageBadge to action buttons (Phase 3)

- Weight page: badge on "Eintrag hinzufügen" heading
- Settings: badges on export buttons (ZIP/JSON)
- Analysis: badges on pipeline and individual analysis titles
- Shows real-time usage status (e.g., "7/5" with red color)

Phase 3: Frontend Display complete

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

frontend/src/pages/Analysis.jsx

@@ -3,6 +3,7 @@ import { Brain, Pencil, Trash2, ChevronDown, ChevronUp, Check, X } from 'lucide-
 import { api } from '../utils/api'
 import { useAuth } from '../context/AuthContext'
 import Markdown from '../utils/Markdown'
+import UsageBadge from '../components/UsageBadge'
 import dayjs from 'dayjs'
 import 'dayjs/locale/de'
 dayjs.locale('de')
@@ -114,6 +115,7 @@ export default function Analysis() {
   const [tab,         setTab]         = useState('run')
   const [newResult,       setNewResult]       = useState(null)
   const [pipelineLoading, setPipelineLoading] = useState(false)
+  const [aiUsage, setAiUsage] = useState(null)  // Phase 3: Usage badge
 
   const loadAll = async () => {
     const [p, i] = await Promise.all([
@@ -123,7 +125,15 @@ export default function Analysis() {
     setPrompts(Array.isArray(p)?p:[])
     setAllInsights(Array.isArray(i)?i:[])
   }
-  useEffect(()=>{ loadAll() },[])
+
+  useEffect(()=>{
+    loadAll()
+    // Load feature usage for badges
+    api.getFeatureUsage().then(features => {
+      const aiFeature = features.find(f => f.feature_id === 'ai_calls')
+      setAiUsage(aiFeature)
+    }).catch(err => console.error('Failed to load usage:', err))
+  },[])
 
   const runPipeline = async () => {
     setPipelineLoading(true); setError(null); setNewResult(null)
@@ -230,7 +240,10 @@ export default function Analysis() {
             <div className="card" style={{marginBottom:16,borderColor:'var(--accent)',borderWidth:2}}>
               <div style={{display:'flex',alignItems:'flex-start',gap:12}}>
                 <div style={{flex:1}}>
-                  <div style={{fontWeight:700,fontSize:15,color:'var(--accent)'}}>🔬 Mehrstufige Gesamtanalyse</div>
+                  <div style={{fontWeight:700,fontSize:15,color:'var(--accent)'}}>
+                    🔬 Mehrstufige Gesamtanalyse
+                    {aiUsage && <UsageBadge {...aiUsage} />}
+                  </div>
                   <div style={{fontSize:12,color:'var(--text2)',marginTop:3,lineHeight:1.5}}>
                     3 spezialisierte KI-Calls parallel (Körper + Ernährung + Aktivität),
                     dann Synthese + Zielabgleich. Detaillierteste Auswertung.
@@ -282,7 +295,10 @@ export default function Analysis() {
               <div key={p.id} className="card section-gap">
                 <div style={{display:'flex',alignItems:'flex-start',gap:12}}>
                   <div style={{flex:1}}>
-                    <div style={{fontWeight:600,fontSize:15}}>{SLUG_LABELS[p.slug]||p.name}</div>
+                    <div style={{fontWeight:600,fontSize:15}}>
+                      {SLUG_LABELS[p.slug]||p.name}
+                      {aiUsage && <UsageBadge {...aiUsage} />}
+                    </div>
                     {p.description && <div style={{fontSize:12,color:'var(--text3)',marginTop:2}}>{p.description}</div>}
                     {existing && (
                       <div style={{fontSize:11,color:'var(--text3)',marginTop:3}}>

frontend/src/pages/SettingsPage.jsx

@@ -1,4 +1,4 @@
-import { useState } from 'react'
+import { useState, useEffect } from 'react'
 import { Save, Download, Upload, Trash2, Plus, Check, Pencil, X, LogOut, Shield, Key, BarChart3 } from 'lucide-react'
 import { useProfile } from '../context/ProfileContext'
 import { useAuth } from '../context/AuthContext'
@@ -6,6 +6,7 @@ import { Avatar } from './ProfileSelect'
 import { api } from '../utils/api'
 import AdminPanel from './AdminPanel'
 import FeatureUsageOverview from '../components/FeatureUsageOverview'
+import UsageBadge from '../components/UsageBadge'
 
 const COLORS = ['#1D9E75','#378ADD','#D85A30','#EF9F27','#7F77DD','#D4537E','#639922','#888780']
 
@@ -100,6 +101,15 @@ export default function SettingsPage() {
   const [pinOpen,   setPinOpen]   = useState(false)
   const [newPin,    setNewPin]    = useState('')
   const [pinMsg,    setPinMsg]    = useState(null)
+  const [exportUsage, setExportUsage] = useState(null)  // Phase 3: Usage badge
+
+  // Load feature usage for export badges
+  useEffect(() => {
+    api.getFeatureUsage().then(features => {
+      const exportFeature = features.find(f => f.feature_id === 'data_export')
+      setExportUsage(exportFeature)
+    }).catch(err => console.error('Failed to load usage:', err))
+  }, [])
 
   const handleLogout = async () => {
     if (!confirm('Ausloggen?')) return
@@ -372,11 +382,13 @@ export default function SettingsPage() {
             <button className="btn btn-primary btn-full"
               onClick={()=>api.exportZip()}>
               <Download size={14}/> ZIP exportieren
+              {exportUsage && <UsageBadge {...exportUsage} />}
               <span style={{fontSize:11,opacity:0.8,marginLeft:6}}>— je eine CSV pro Kategorie</span>
             </button>
             <button className="btn btn-secondary btn-full"
               onClick={()=>api.exportJson()}>
               <Download size={14}/> JSON exportieren
+              {exportUsage && <UsageBadge {...exportUsage} />}
               <span style={{fontSize:11,opacity:0.8,marginLeft:6}}>— maschinenlesbar, alles in einer Datei</span>
             </button>
           </>}

frontend/src/pages/WeightScreen.jsx

@@ -2,6 +2,7 @@ import { useState, useEffect, useRef } from 'react'
 import { Pencil, Trash2, Check, X } from 'lucide-react'
 import { api } from '../utils/api'
 import { LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer, CartesianGrid, ReferenceLine } from 'recharts'
+import UsageBadge from '../components/UsageBadge'
 import dayjs from 'dayjs'
 import 'dayjs/locale/de'
 dayjs.locale('de')
@@ -21,9 +22,18 @@ export default function WeightScreen() {
   const [newNote,  setNewNote]  = useState('')
   const [saving,   setSaving]   = useState(false)
   const [saved,    setSaved]    = useState(false)
+  const [weightUsage, setWeightUsage] = useState(null)  // Phase 3: Usage badge
 
   const load = () => api.listWeight(365).then(data => setEntries(data))
-  useEffect(()=>{ load() },[])
+
+  useEffect(()=>{
+    load()
+    // Load feature usage for badge
+    api.getFeatureUsage().then(features => {
+      const weightFeature = features.find(f => f.feature_id === 'weight_entries')
+      setWeightUsage(weightFeature)
+    }).catch(err => console.error('Failed to load usage:', err))
+  },[])
 
   const handleSave = async () => {
     if (!newWeight) return
@@ -59,7 +69,10 @@ export default function WeightScreen() {
 
       {/* Eingabe */}
       <div className="card section-gap">
-        <div className="card-title">Eintrag hinzufügen</div>
+        <div className="card-title">
+          Eintrag hinzufügen
+          {weightUsage && <UsageBadge {...weightUsage} />}
+        </div>
         <div className="form-row">
           <label className="form-label">Datum</label>
           <input type="date" className="form-input" style={{width:140}}