[verified] Add Thai Simulation tab (capital allocation 50/20/30); remove legacy paper-ledger section

- Simulation panel (07): capital input (บาท), mode (backtest/forward), calls /api/v1/simulation, renders 3 buckets with orders (symbol/qty/price/notional), invested + unallocated cash, honest non-PIT label
- Removed legacy 'Paper ledger' section (superseded by simulation/forward-test per user)
- Sidebar thumb จำลอง; responsive 1-col mobile
- Verified: npm build + browser (3 bucket cards render, ลงทุนรวม/เงินสดเหลือ show)

frontend/src/App.vue

@@ -6,6 +6,10 @@ const observations = ref(null)
 const signalData = ref(null)
 const factorData = ref(null)
 const themeData = ref(null)
+const simCapital = ref(1000000)
+const simMode = ref('backtest')
+const simLoading = ref(false)
+const simResult = ref(null)
 const dividendOnly = ref(false)
 const sortKey = ref('signal_score')
 const sortDirection = ref('desc')
@@ -189,6 +193,27 @@ async function runResearch() {
   }
 }
 
+const simOrders = computed(() => simResult.value?.orders ?? [])
+const simInvested = computed(() => simResult.value?.invested ?? 0)
+const simUnallocated = computed(() => simResult.value?.unallocated_cash ?? 0)
+const bucketOrders = (n) => simOrders.value.filter((o) => o.bucket === n)
+
+async function runSimulation() {
+  simLoading.value = true
+  simResult.value = null
+  try {
+    simResult.value = await fetchJson('/api/v1/simulation', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ capital: Number(simCapital.value), mode: simMode.value }),
+    })
+  } catch (caught) {
+    notice.value = caught.message
+  } finally {
+    simLoading.value = false
+  }
+}
+
 async function loadDashboard() {
   loading.value = true
   error.value = ''
@@ -312,6 +337,7 @@ onMounted(loadDashboard)
         <a class="nav-item" href="#factors"><span class="nav-glyph">∿</span>ปัจจัย</a>
         <a class="nav-item" href="#lineage"><span class="nav-glyph">⌁</span>ที่มาข้อมูล</a>
         <a class="nav-item" href="#research-run"><span class="nav-glyph">✓</span>งานวิจัย</a>
+        <a class="nav-item" href="#simulation"><span class="nav-glyph">➛</span>จำลอง</a>
       </nav>
 
       <div class="sidebar-footer">
@@ -555,6 +581,75 @@ onMounted(loadDashboard)
           <div v-if="!researchRun" class="empty-research">ยังไม่มี frozen research run. รันการตรวจเพื่อเก็บ input กับ gate decision ปัจจุบัน.</div>
         </section>
 
+        <section class="panel sim-panel" id="simulation">
+          <div class="panel-header signal-header">
+            <div>
+              <div class="section-kicker">07 / การจำลองการลงทุน</div>
+              <h2>จัดสรรทุน (Simulation)</h2>
+              <p class="panel-subtitle">กรอกทุน และระบบจัดสรรตามสัดส่วน 50 / 20 / 30 — หุ้นที่ทำกำไรได้มากสุดแล้วจ่ายปันผล, หุ้นทำกำไรแต่ไม่ปันผล, และหุ้นปันผลสูงสุด (ไม่ซ้ำ) — ขั้นต่ำ 100 หุ้นต่อตัว.</p>
+            </div>
+            <span class="status-tag neutral-tag">{{ simResult ? 'ใช้ได้' : 'รอใส่ทุน' }}</span>
+          </div>
+          <div class="sim-controls">
+            <div class="sim-field">
+              <label>ทุน (บาท)</label>
+              <input v-model="simCapital" type="number" min="1000" step="1000" />
+            </div>
+            <div class="sim-field">
+              <label>โหมด</label>
+              <select v-model="simMode">
+                <option value="backtest">Backtest</option>
+                <option value="forward">Forward test</option>
+              </select>
+            </div>
+            <button class="primary-button" :disabled="simLoading" @click="runSimulation">{{ simLoading ? 'กำลังคำนวณ…' : 'คำนวณการจัดสรร' }}</button>
+          </div>
+
+          <div v-if="simResult" class="sim-result">
+            <div class="sim-sums">
+              <div class="sim-sum"><span>ลงทุนรวม</span><strong>{{ formatNumber(simInvested, 0) }} บาท</strong></div>
+              <div class="sim-sum"><span>เงินสดเหลือ</span><strong>{{ formatNumber(simUnallocated, 0) }} บาท</strong></div>
+            </div>
+            <div class="sim-note">{{ simResult.data_note }}</div>
+            <div class="sim-buckets">
+              <div class="sim-bucket">
+                <div class="sim-bucket-head"><span class="sim-bucket-tag b1">50%</span><strong>ทำกำไร + จ่ายปันผล</strong></div>
+                <table class="sim-order-table">
+                  <tbody v-if="bucketOrders(1).length">
+                    <tr v-for="o in bucketOrders(1)" :key="'b1'+o.symbol">
+                      <td>{{ o.symbol }}</td><td class="muted-cell">qty {{ o.qty }}</td><td class="score-cell">@ {{ formatNumber(o.price) }}</td><td class="score-cell">{{ formatNumber(o.notional, 0) }}</td>
+                    </tr>
+                  </tbody>
+                  <tbody v-else><tr><td class="muted-cell">ไม่มีหุ้นที่เข้าเกณฑ์</td></tr></tbody>
+                </table>
+              </div>
+              <div class="sim-bucket">
+                <div class="sim-bucket-head"><span class="sim-bucket-tag b2">20%</span><strong>ทำกำไร ไม่ปันผล</strong></div>
+                <table class="sim-order-table">
+                  <tbody v-if="bucketOrders(2).length">
+                    <tr v-for="o in bucketOrders(2)" :key="'b2'+o.symbol">
+                      <td>{{ o.symbol }}</td><td class="muted-cell">qty {{ o.qty }}</td><td class="score-cell">@ {{ formatNumber(o.price) }}</td><td class="score-cell">{{ formatNumber(o.notional, 0) }}</td>
+                    </tr>
+                  </tbody>
+                  <tbody v-else><tr><td class="muted-cell">ไม่มีหุ้นที่เข้าเกณฑ์</td></tr></tbody>
+                </table>
+              </div>
+              <div class="sim-bucket">
+                <div class="sim-bucket-head"><span class="sim-bucket-tag b3">30%</span><strong>ปันผลสูงสุด (ไม่ซ้ำ)</strong></div>
+                <table class="sim-order-table">
+                  <tbody v-if="bucketOrders(3).length">
+                    <tr v-for="o in bucketOrders(3)" :key="'b3'+o.symbol">
+                      <td>{{ o.symbol }}</td><td class="muted-cell">qty {{ o.qty }}</td><td class="score-cell">@ {{ formatNumber(o.price) }}</td><td class="score-cell">{{ formatNumber(o.notional, 0) }}</td>
+                    </tr>
+                  </tbody>
+                  <tbody v-else><tr><td class="muted-cell">ไม่มีหุ้นที่เข้าเกณฑ์</td></tr></tbody>
+                </table>
+              </div>
+            </div>
+          </div>
+          <div v-if="!simResult" class="empty-research">กด 'คำนวณการจัดสรร' เพื่อดูว่า 50/20/30 จัดสรรทุนของคุณไปที่หุ้นไหนบ้าง</div>
+        </section>
+
         <section class="bottom-grid">
           <article class="panel thesis-panel">
             <div class="section-kicker">05 / บันทึกการวิเคราะห์</div>
@@ -562,27 +657,6 @@ onMounted(loadDashboard)
             <p>ข้อมูล tourism {{ summary.theme_surprise >= 0 ? 'สูงกว่า' : 'ต่ำกว่า' }}ค่าที่คาด เป็นตัวกำหนดว่าหุ้นตัวไหนได้ score บวกหรือลบ ระบบหยุดก่อนสั่ง execution — ยังต้องมีคน review valuation, price-in, liquidity และ risk.</p>
             <div class="thesis-rule"><span></span>Surprise × Exposure × Confidence</div>
           </article>
-          <article class="panel ledger-panel">
-            <div class="panel-header">
-              <div><div class="section-kicker">06 / Simulation</div><h2>Paper ledger</h2></div>
-              <span class="status-tag neutral-tag">ภายในเท่านั้น</span>
-            </div>
-            <p>บันทึก assumed fill เพื่อทดสอบพฤติกรรม portfolio — ไม่ส่ง webhook หรือ order.</p>
-            <div v-if="paperAuthWarning" class="paper-auth-warning">{{ paperAuthWarning }}</div>
-            <div v-if="notice" class="notice" :class="notice.includes('recorded') || notice.includes('unlocked') ? 'notice-success' : 'notice-error'">{{ notice }}</div>
-            <div v-if="!paperAuthenticated && paperAuthMode === 'token' && paperAuthEnabled" class="auth-form">
-              <div class="auth-copy">การเขียน paper ถูกล็อก. กรอก local operator token (ใช้สร้าง HttpOnly session เท่านั้น).</div>
-              <input v-model="paperToken" type="password" autocomplete="current-password" placeholder="Paper-session token" aria-label="Paper-session token" />
-              <button class="primary-button" :disabled="unlocking" @click="unlockPaper">{{ unlocking ? 'กำลังปลดล็อก…' : 'ปลดล็อก paper ledger' }}</button>
-            </div>
-            <div v-else-if="!paperAuthenticated && paperAuthMode === 'token' && !paperAuthEnabled" class="empty-ledger">Paper writes ถูกปิดโดย server configuration.</div>
-            <div v-else-if="paperAuthenticated && selectedSignal" class="entry-form">
-              <div class="selected-entry"><strong>{{ selectedSignal.symbol }}</strong><span>{{ selectedSignal.side }} · target {{ (selectedSignal.target_weight * 100).toFixed(1) }}%</span></div>
-              <input v-model="assumedPrice" type="number" min="0.01" step="0.01" placeholder="Assumed fill price" aria-label="Assumed fill price" />
-              <button class="primary-button" :disabled="submitting" @click="recordPaperEntry">{{ submitting ? 'กำลังบันทึก…' : 'บันทึก paper entry' }}</button>
-            </div>
-            <div v-else class="empty-ledger">เลือกสัญญาณข้างบนเพื่อบันทึก paper entry.</div>
-          </article>
         </section>
       </template>
     </main>

frontend/src/style.css

@@ -124,6 +124,29 @@ tbody tr:hover { background: rgba(255,255,255,.025); }
 .theme-read-error { font-size: 11px; color: var(--danger, #e5484d); }
 
 @media (max-width: 720px) { .theme-grid { grid-template-columns: 1fr; } }
+
+/* ---- Simulation panel ---- */
+.sim-panel { margin-top: 18px; }
+.sim-controls { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 14px; }
+.sim-field { display: flex; flex-direction: column; gap: 4px; }
+.sim-field label { font-size: 11px; color: var(--faint); }
+.sim-field input, .sim-field select { background: var(--card); border: 1px solid var(--line-bright); color: var(--text); padding: 7px 9px; border-radius: 5px; font-size: 12px; }
+.sim-result { display: flex; flex-direction: column; gap: 12px; }
+.sim-sums { display: flex; gap: 24px; }
+.sim-sum span { display: block; font-size: 11px; color: var(--faint); }
+.sim-sum strong { font-size: 20px; }
+.sim-note { font-size: 11px; color: var(--amber); font-style: italic; }
+.sim-buckets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
+.sim-bucket { border: 1px solid var(--line-bright); border-radius: 8px; padding: 10px; }
+.sim-bucket-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
+.sim-bucket-tag { font: 700 10px 'DM Mono', monospace; padding: 2px 6px; border-radius: 4px; }
+.sim-bucket-tag.b1 { background: var(--accent-soft, rgba(63,161,255,.15)); color: var(--accent); }
+.sim-bucket-tag.b2 { background: var(--amber-soft, rgba(245,158,11,.15)); color: var(--amber); }
+.sim-bucket-tag.b3 { background: var(--mint-soft, rgba(94,234,212,.15)); color: var(--mint); }
+.sim-order-table { width: 100%; border-collapse: collapse; }
+.sim-order-table td { padding: 3px 4px; font-size: 12px; }
+
+@media (max-width: 720px) { .sim-buckets { grid-template-columns: 1fr; } }
 .row-action, .primary-button { padding: 8px 10px; border: 1px solid var(--line-bright); border-radius: 5px; color: var(--text); background: transparent; font-size: 10px; white-space: nowrap; transition: .2s ease; }
 .row-action:hover { color: var(--mint); border-color: var(--mint); }