diff --git a/src/genesis/server/static/chat.css b/src/genesis/server/static/chat.css
new file mode 100644
index 0000000..ebcf84d
--- /dev/null
+++ b/src/genesis/server/static/chat.css
@@ -0,0 +1,205 @@
+/* src/genesis/server/static/chat.css
+   v0 拆分骨架 - 视觉与原 chat.html 内联样式完全一致
+   v1 视觉重塑见 docs/superpowers/plans/2026-08-30-frontend-beautify.md Task 2
+*/
+:root {
+  --blue: #1a73e8;
+  --blue-dark: #1967d2;
+  --blue-soft: #d2e3fc;
+  --red: #ea4335;
+  --red-soft: #fce8e6;
+  --yellow: #fbbc05;
+  --green: #34a853;
+  --gray-50: #f8f9fa;
+  --gray-100: #f1f3f4;
+  --gray-200: #e8eaed;
+  --gray-300: #dadce0;
+  --gray-500: #5f6368;
+  --gray-700: #3c4043;
+  --gray-900: #202124;
+  --blue-50: #e8f0fe;
+  --blue-100: #d2e3fc;
+  --radius-lg: 12px;
+  --radius-xl: 16px;
+  --shadow-1: 0 1px 2px rgba(60,64,67,.30), 0 1px 3px 1px rgba(60,64,67,.15);
+  --shadow-2: 0 1px 2px rgba(60,64,67,.30), 0 2px 6px 2px rgba(60,64,67,.15);
+  --shadow-3: 0 1px 3px rgba(60,64,67,.30), 0 4px 8px 3px rgba(60,64,67,.15);
+  --glow-blue: 0 0 0 1px rgba(26,115,232,.12), 0 8px 24px rgba(26,115,232,.18);
+  --ease: all .2s cubic-bezier(.2,0,0,1);
+  --font-ui: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif;
+}
+* { box-sizing: border-box; }
+html, body { height: 100%; }
+body {
+  font-family: var(--font-ui);
+  margin: 0; height: 100vh; display: flex; flex-direction: row;
+  background: var(--gray-50); color: var(--gray-900);
+  -webkit-font-smoothing: antialiased;
+}
+::-webkit-scrollbar { width: 8px; height: 8px; }
+::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 8px; }
+::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }
+::-webkit-scrollbar-track { background: transparent; }
+
+/* Sidebar */
+#sidebar { width: 264px; background: #fff; color: var(--gray-900); display: flex; flex-direction: column; flex-shrink: 0; border-right: 1px solid var(--gray-200); transition: width .25s ease; position: relative; }
+#sidebar.collapsed { width: 56px; }
+#sidebar.collapsed #sidebar-toggle { top: auto; bottom: 14px; right: auto; left: 14px; }
+#sidebar.collapsed #session-list { padding-bottom: 52px; }
+.brand { display: flex; align-items: center; gap: 12px; padding: 16px 12px 12px 16px; margin: 0 8px 8px; border-bottom: 1px solid var(--gray-100); min-height: 64px; }
+#sidebar.collapsed .brand { padding: 16px 8px; justify-content: center; gap: 0; }
+.brand-logo { width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 17px; font-weight: 900; background: linear-gradient(135deg, #1a73e8, #4285f4); box-shadow: var(--glow-blue); transition: var(--ease); }
+.brand:hover .brand-logo { transform: scale(1.1); }
+.brand-name { font-size: 17px; font-weight: 900; letter-spacing: -.02em; line-height: 1.1; }
+#sidebar.collapsed .brand-name { display: none; }
+.brand-sub { display: block; font-size: 11px; font-weight: 600; color: var(--gray-500); margin-top: 2px; letter-spacing: 0; }
+#sidebar-toggle { position: absolute; top: 18px; right: -14px; z-index: 5; width: 28px; height: 28px; border-radius: 50%; background: #fff; border: 1px solid var(--gray-200); box-shadow: var(--shadow-1); color: var(--gray-700); cursor: pointer; font-size: 14px; line-height: 1; display: flex; align-items: center; justify-content: center; transition: var(--ease); }
+#sidebar-toggle:hover { color: var(--blue); border-color: var(--blue-100); }
+#sidebar.collapsed #sidebar-toggle { transform: rotate(180deg); }
+#new-chat { margin: 6px 16px 10px; background: var(--blue); color: #fff; border: none; padding: 10px 14px; border-radius: var(--radius-lg); cursor: pointer; font-size: 14px; font-weight: 600; letter-spacing: .01em; box-shadow: 0 1px 2px rgba(26,115,232,.4); transition: var(--ease); display: flex; align-items: center; justify-content: center; gap: 6px; }
+#new-chat:hover { background: var(--blue-dark); box-shadow: 0 2px 6px rgba(26,115,232,.45); transform: translateY(-1px); }
+#new-chat:active { transform: translateY(0); }
+#sidebar.collapsed #new-chat { margin: 6px 10px 10px; padding: 10px 0; }
+#new-chat .ic-plus { display: inline-block; font-weight: 900; }
+#sidebar.collapsed #new-chat .nc-text { display: none; }
+#sidebar h2 { font-size: 9px; font-weight: 900; letter-spacing: .2em; text-transform: uppercase; color: var(--gray-500); margin: 10px 16px 6px; }
+#sidebar.collapsed h2 { display: none; }
+#session-list { flex: 1; overflow-y: auto; padding: 0 8px 8px; }
+.sess { padding: 9px 12px; border-radius: var(--radius-lg); margin: 2px 0; cursor: pointer; position: relative; border: 1px solid transparent; transition: var(--ease); display: flex; align-items: center; gap: 6px; }
+.sess:hover { background: var(--gray-50); }
+.sess.active { background: var(--blue-50); border-color: var(--blue-100); }
+.sess.active::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px; border-radius: 0 3px 3px 0; background: var(--blue); }
+.sess .info { flex: 1; min-width: 0; overflow: hidden; }
+.sess .name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.sess.active .name { font-weight: 700; }
+.sess .meta { font-size: 11px; color: var(--gray-500); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.sess .del { flex-shrink: 0; opacity: 0; transition: opacity .15s ease; background: transparent; border: none; color: var(--gray-500); cursor: pointer; width: 24px; height: 24px; border-radius: 6px; font-size: 16px; line-height: 1; display: flex; align-items: center; justify-content: center; }
+.sess:hover .del { opacity: .7; }
+.sess .del:hover { opacity: 1 !important; background: var(--red-soft); color: var(--red); }
+#sidebar.collapsed .sess { justify-content: center; padding: 9px 6px; }
+#sidebar.collapsed .sess .info, #sidebar.collapsed .sess .del { display: none; }
+#sidebar.collapsed .sess .avatar { display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; background: var(--gray-100); color: var(--gray-700); font-size: 12px; font-weight: 700; }
+.sess .avatar { display: none; }
+#sidebar.collapsed .sess .avatar { display: flex; }
+#sidebar.collapsed .sess.active .avatar { background: var(--blue); color: #fff; }
+
+/* Main */
+#main { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--gray-50); }
+header { height: 56px; position: sticky; top: 0; z-index: 10; padding: 0 24px; display: flex; align-items: center; gap: 14px; background: rgba(255,255,255,.78); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-200); }
+header h1 { font-size: 16px; font-weight: 900; letter-spacing: -.02em; margin: 0; color: var(--gray-900); }
+.proj-switcher { position: relative; }
+.ps-current { display: flex; align-items: center; gap: 8px; background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius-lg); padding: 7px 12px; cursor: pointer; font-size: 13px; font-weight: 600; color: var(--gray-700); transition: var(--ease); }
+.ps-current:hover { background: #fff; border-color: var(--blue-100); color: var(--blue-dark); }
+.ps-current .ps-label { font-size: 11px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; color: var(--gray-500); }
+.ps-current .ps-name { max-width: 160px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.ps-current .ps-caret { font-size: 10px; color: var(--gray-500); }
+.ps-menu { position: absolute; top: calc(100% + 6px); left: 0; min-width: 240px; background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius-lg); box-shadow: var(--shadow-3); padding: 6px; z-index: 20; display: none; }
+.ps-menu.open { display: block; animation: zoomIn .2s ease; }
+.ps-item { padding: 8px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--gray-700); display: flex; align-items: center; gap: 8px; transition: background .15s ease; }
+.ps-item:hover { background: var(--blue-50); color: var(--blue-dark); }
+.ps-item.active { background: var(--blue-50); color: var(--blue-dark); font-weight: 700; }
+.ps-item .ps-check { margin-left: auto; color: var(--blue); font-weight: 900; opacity: 0; }
+.ps-item.active .ps-check { opacity: 1; }
+.ps-sep { height: 1px; background: var(--gray-100); margin: 4px 6px; }
+.ps-manage { color: var(--blue); font-weight: 600; }
+#sid-badge { margin-left: auto; background: var(--blue-50); color: var(--blue-dark); border: 1px solid var(--blue-100); border-radius: 999px; padding: 4px 14px; font-size: 12px; font-weight: 600; max-width: 46%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+
+/* RAG */
+#rag-bar { display: flex; align-items: center; gap: 8px; background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: 999px; padding: 3px 10px; font-size: 12px; color: var(--gray-700); }
+#rag-bar label.rag-switch { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }
+#rag-bar input[type=checkbox] { width: 14px; height: 14px; accent-color: var(--blue); margin: 0; }
+#rag-bar input[type=checkbox]:disabled + span { color: var(--gray-500); cursor: not-allowed; }
+#rag-bar .rag-stats { font-variant-numeric: tabular-nums; color: var(--gray-500); }
+#rag-bar .rag-stats.ready { color: var(--blue-dark); font-weight: 600; }
+#rag-bar .rag-stats.zero { color: var(--gray-500); }
+#rag-bar button { background: var(--blue); color: #fff; border: none; border-radius: 999px; padding: 4px 12px; font-size: 12px; font-weight: 700; cursor: pointer; }
+#rag-bar button:disabled { background: var(--gray-200); color: var(--gray-500); cursor: not-allowed; }
+#rag-bar button:hover:not(:disabled) { background: var(--blue-dark); }
+
+/* Chat */
+#chat { flex: 1; overflow-y: auto; padding: 24px 24px 32px; max-width: 880px; width: 100%; margin: 0 auto; }
+.msg { display: flex; margin: 12px 0; animation: zoomIn .25s ease; }
+.msg .bubble { max-width: 74%; padding: 11px 16px; border-radius: var(--radius-xl); white-space: pre-wrap; line-height: 1.6; font-size: 14px; letter-spacing: .01em; }
+.msg.user { justify-content: flex-end; }
+.msg.user .bubble { background: linear-gradient(135deg, #1a73e8, #4285f4); color: #fff; border-bottom-right-radius: 6px; box-shadow: var(--shadow-2); }
+.msg.assistant { align-items: flex-start; }
+.msg.assistant .bubble { background: #fff; border: 1px solid var(--gray-200); border-bottom-left-radius: 6px; box-shadow: var(--shadow-1); }
+.msg.assistant::before { content: ""; width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; margin: 16px 8px 0 0; background: var(--blue); box-shadow: 0 0 0 0 rgba(26,115,232,.4); animation: auraPulse 2.2s ease-in-out infinite; }
+.msg.progress .bubble { background: var(--blue-50); border: 1px dashed var(--blue-soft); font-size: 13px; color: var(--gray-700); }
+.msg.error .bubble { background: var(--red-soft); border: 1px solid #f5c6c0; color: #b31412; }
+.progress-item { display: block; }
+.progress-item.ok::before { content: "✔ "; color: var(--green); font-weight: 700; }
+.progress-item.warn::before { content: "⚠ "; color: #b06000; font-weight: 700; }
+.actions { margin-top: 8px; }
+.actions a { display: inline-block; margin: 4px 6px 0 0; background: var(--blue); color: #fff; padding: 6px 14px; border-radius: 999px; text-decoration: none; font-size: 13px; font-weight: 600; box-shadow: 0 1px 2px rgba(26,115,232,.4); transition: var(--ease); }
+.actions a:hover { background: var(--blue-dark); transform: translateY(-1px); }
+.typing { color: var(--gray-500); font-size: 13px; font-style: italic; animation: auraPulse 1.4s ease-in-out infinite; }
+
+/* Upload */
+#upload-bar { background: #fff; border-top: 1px solid var(--gray-200); padding: 10px 24px; font-size: 13px; }
+#upload-bar-inner { max-width: 880px; margin: 0 auto; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
+#upload-bar select { font-size: 13px; padding: 8px 12px; border: 1px solid var(--gray-300); border-radius: var(--radius-lg); background: #fff; color: var(--gray-900); cursor: pointer; outline: none; transition: var(--ease); }
+#upload-bar select:focus { border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue-50); }
+.file-pick { display: inline-block; padding: 8px 14px; border: 1px solid var(--gray-300); border-radius: var(--radius-lg); background: var(--gray-50); color: var(--gray-700); font-size: 13px; font-weight: 600; cursor: pointer; transition: var(--ease); }
+.file-pick:hover { background: var(--blue-50); color: var(--blue-dark); border-color: var(--blue-100); }
+#upload-btn { background: var(--gray-100); border: 1px solid var(--gray-200); color: var(--gray-700); border-radius: var(--radius-lg); padding: 8px 16px; cursor: pointer; font-size: 13px; font-weight: 600; transition: var(--ease); }
+#upload-btn:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
+#upload-status { color: var(--gray-500); font-size: 12px; }
+#proj-hint { color: #b06000; font-size: 12px; background: #fef7e0; border: 1px solid #fde293; border-radius: 8px; padding: 4px 10px; }
+label.vh { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
+
+/* Composer */
+#composer { border-top: 1px solid var(--gray-200); background: #fff; padding: 14px 24px 18px; }
+#composer-inner { max-width: 880px; margin: 0 auto; display: flex; gap: 10px; align-items: center; }
+#input { flex: 1; border: 1px solid var(--gray-300); border-radius: 999px; padding: 11px 18px; font-size: 14px; outline: none; background: var(--gray-50); transition: var(--ease); color: var(--gray-900); }
+#input:focus { border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px var(--blue-50); }
+#input::placeholder { color: var(--gray-500); }
+#send { background: var(--blue); color: #fff; border: none; border-radius: 999px; padding: 11px 24px; cursor: pointer; font-size: 14px; font-weight: 700; box-shadow: 0 1px 2px rgba(26,115,232,.4); transition: var(--ease); }
+#send:hover:not(:disabled) { background: var(--blue-dark); box-shadow: var(--shadow-2); transform: translateY(-1px); }
+#send:active:not(:disabled) { transform: translateY(0); }
+#send:disabled { opacity: .45; cursor: not-allowed; }
+
+/* Drawer */
+#proj-drawer { position: fixed; top: 0; right: 0; height: 100vh; width: 460px; background: #fff; border-left: 1px solid var(--gray-200); box-shadow: -8px 0 32px rgba(60,64,67,.12); transform: translateX(100%); transition: transform .3s cubic-bezier(.2,0,0,1); z-index: 100; display: flex; flex-direction: column; }
+#proj-drawer.open { transform: translateX(0); }
+.drawer-head { height: 56px; padding: 0 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--gray-200); background: rgba(255,255,255,.95); backdrop-filter: blur(8px); flex-shrink: 0; }
+.drawer-head h2 { font-size: 15px; font-weight: 900; letter-spacing: -.01em; margin: 0; color: var(--gray-900); flex: 1; }
+.drawer-close { background: var(--gray-100); border: none; color: var(--gray-700); width: 32px; height: 32px; border-radius: 50%; cursor: pointer; font-size: 18px; line-height: 1; display: flex; align-items: center; justify-content: center; transition: var(--ease); }
+.drawer-close:hover { background: var(--red-soft); color: var(--red); }
+.drawer-body { flex: 1; display: flex; min-height: 0; }
+.drawer-list { width: 38%; border-right: 1px solid var(--gray-100); overflow-y: auto; padding: 10px 8px; background: var(--gray-50); display: flex; flex-direction: column; gap: 2px; }
+.drawer-item { padding: 10px 12px; border-radius: 10px; cursor: pointer; font-size: 13px; color: var(--gray-700); border: 1px solid transparent; transition: var(--ease); display: flex; align-items: center; gap: 8px; }
+.drawer-item:hover { background: #fff; border-color: var(--gray-200); }
+.drawer-item.active { background: #fff; border-color: var(--blue-100); color: var(--blue-dark); font-weight: 700; box-shadow: var(--shadow-1); }
+.drawer-item .di-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.drawer-item .di-new { color: var(--blue); }
+.drawer-item.di-create { border: 1px dashed var(--blue-100); background: var(--blue-50); color: var(--blue-dark); font-weight: 700; justify-content: center; gap: 4px; }
+.drawer-item.di-create:hover { background: var(--blue-100); border-color: var(--blue); }
+.drawer-form { flex: 1; overflow-y: auto; padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
+.drawer-form label { font-size: 11px; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 2px; display: block; }
+.drawer-form input { width: 100%; padding: 8px 11px; border: 1px solid var(--gray-200); border-radius: 8px; font-size: 13px; color: var(--gray-900); background: #fff; transition: var(--ease); }
+.drawer-form input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue-50); }
+.drawer-form input:read-only { background: var(--gray-50); color: var(--gray-500); }
+.drawer-form .field { display: flex; flex-direction: column; }
+.drawer-form .drawer-hint { margin: 0 0 6px; }
+.drawer-form details.advanced { border: 1px solid var(--gray-200); border-radius: 8px; padding: 8px 12px; background: var(--gray-50); }
+.drawer-form details.advanced > summary { cursor: pointer; font-size: 12px; font-weight: 700; color: var(--gray-700); letter-spacing: .02em; }
+.drawer-form details.advanced[open] { padding-bottom: 10px; }
+.drawer-form details.advanced .field { margin-top: 8px; }
+.drawer-form input.invalid { border-color: var(--red) !important; box-shadow: 0 0 0 2px var(--red-soft) !important; }
+.drawer-actions { display: flex; gap: 8px; margin-top: 8px; }
+.drawer-actions button { flex: 1; padding: 10px; border: none; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600; transition: var(--ease); }
+.btn-save { background: var(--blue); color: #fff; }
+.btn-save:hover { background: var(--blue-dark); }
+.btn-delete { background: var(--red-soft); color: var(--red); border: 1px solid #f5c6c0 !important; }
+.btn-delete:hover { background: var(--red); color: #fff; }
+.drawer-hint { font-size: 11px; color: var(--gray-500); line-height: 1.5; padding: 8px 0; }
+
+@keyframes auraPulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }
+@keyframes zoomIn { from { opacity: 0; transform: scale(.97); } to { opacity: 1; transform: scale(1); } }
+@media (max-width: 860px) {
+  #sidebar { width: 220px; }
+  #sidebar.collapsed { width: 48px; }
+  #sid-badge { display: none; }
+  #proj-drawer { width: 100vw; }
+}
diff --git a/src/genesis/server/static/chat.html b/src/genesis/server/static/chat.html
index 7d80831..f4dc148 100644
--- a/src/genesis/server/static/chat.html
+++ b/src/genesis/server/static/chat.html
@@ -4,392 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Genesis — 概要设计书自动生成（对话）</title>
-<link rel="preconnect" href="https://fonts.googleapis.com">
-<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;900&display=swap" rel="stylesheet">
-<style>
-  :root {
-    --blue: #1a73e8;
-    --blue-dark: #1967d2;
-    --blue-soft: #d2e3fc;
-    --red: #ea4335;
-    --red-soft: #fce8e6;
-    --yellow: #fbbc05;
-    --green: #34a853;
-    --gray-50: #f8f9fa;
-    --gray-100: #f1f3f4;
-    --gray-200: #e8eaed;
-    --gray-300: #dadce0;
-    --gray-500: #5f6368;
-    --gray-700: #3c4043;
-    --gray-900: #202124;
-    --blue-50: #e8f0fe;
-    --blue-100: #d2e3fc;
-    --radius-lg: 12px;
-    --radius-xl: 16px;
-    --shadow-1: 0 1px 2px rgba(60,64,67,.30), 0 1px 3px 1px rgba(60,64,67,.15);
-    --shadow-2: 0 1px 2px rgba(60,64,67,.30), 0 2px 6px 2px rgba(60,64,67,.15);
-    --shadow-3: 0 1px 3px rgba(60,64,67,.30), 0 4px 8px 3px rgba(60,64,67,.15);
-    --glow-blue: 0 0 0 1px rgba(26,115,232,.12), 0 8px 24px rgba(26,115,232,.18);
-    --ease: all .2s cubic-bezier(.2,0,0,1);
-  }
-  * { box-sizing: border-box; }
-  html, body { height: 100%; }
-  body {
-    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif;
-    margin: 0; height: 100vh; display: flex; flex-direction: row;
-    background: var(--gray-50); color: var(--gray-900);
-    -webkit-font-smoothing: antialiased;
-  }
-  ::-webkit-scrollbar { width: 8px; height: 8px; }
-  ::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 8px; }
-  ::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }
-  ::-webkit-scrollbar-track { background: transparent; }
-
-  /* ========== 左侧边栏（默认 264px，可折叠至 56px） ========== */
-  #sidebar {
-    width: 264px; background: #fff; color: var(--gray-900);
-    display: flex; flex-direction: column; flex-shrink: 0;
-    border-right: 1px solid var(--gray-200);
-    transition: width .25s ease;
-    position: relative;
-  }
-  #sidebar.collapsed { width: 56px; }
-  #sidebar.collapsed #sidebar-toggle { top: auto; bottom: 14px; right: auto; left: 14px; }
-  #sidebar.collapsed #session-list { padding-bottom: 52px; }
-  .brand {
-    display: flex; align-items: center; gap: 12px;
-    padding: 16px 12px 12px 16px; margin: 0 8px 8px;
-    border-bottom: 1px solid var(--gray-100);
-    min-height: 64px;
-  }
-  #sidebar.collapsed .brand { padding: 16px 8px; justify-content: center; gap: 0; }
-  .brand-logo {
-    width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
-    display: flex; align-items: center; justify-content: center;
-    color: #fff; font-size: 17px; font-weight: 900;
-    background: linear-gradient(135deg, #1a73e8, #4285f4);
-    box-shadow: var(--glow-blue);
-    transition: var(--ease);
-  }
-  .brand:hover .brand-logo { transform: scale(1.1); }
-  .brand-name { font-size: 17px; font-weight: 900; letter-spacing: -.02em; line-height: 1.1; }
-  #sidebar.collapsed .brand-name { display: none; }
-  .brand-sub { display: block; font-size: 11px; font-weight: 600; color: var(--gray-500); margin-top: 2px; letter-spacing: 0; }
-
-  /* 折叠按钮 */
-  #sidebar-toggle {
-    position: absolute; top: 18px; right: -14px; z-index: 5;
-    width: 28px; height: 28px; border-radius: 50%;
-    background: #fff; border: 1px solid var(--gray-200); box-shadow: var(--shadow-1);
-    color: var(--gray-700); cursor: pointer; font-size: 14px; line-height: 1;
-    display: flex; align-items: center; justify-content: center;
-    transition: var(--ease);
-  }
-  #sidebar-toggle:hover { color: var(--blue); border-color: var(--blue-100); }
-  #sidebar.collapsed #sidebar-toggle { transform: rotate(180deg); }
-
-  #new-chat {
-    margin: 6px 16px 10px; background: var(--blue); color: #fff;
-    border: none; padding: 10px 14px; border-radius: var(--radius-lg);
-    cursor: pointer; font-size: 14px; font-weight: 600; letter-spacing: .01em;
-    box-shadow: 0 1px 2px rgba(26,115,232,.4);
-    transition: var(--ease);
-    display: flex; align-items: center; justify-content: center; gap: 6px;
-  }
-  #new-chat:hover { background: var(--blue-dark); box-shadow: 0 2px 6px rgba(26,115,232,.45); transform: translateY(-1px); }
-  #new-chat:active { transform: translateY(0); }
-  #sidebar.collapsed #new-chat { margin: 6px 10px 10px; padding: 10px 0; }
-  #new-chat .ic-plus { display: inline-block; font-weight: 900; }
-  #sidebar.collapsed #new-chat .nc-text { display: none; }
-
-  #sidebar h2 {
-    font-size: 9px; font-weight: 900; letter-spacing: .2em; text-transform: uppercase;
-    color: var(--gray-500); margin: 10px 16px 6px;
-  }
-  #sidebar.collapsed h2 { display: none; }
-  #session-list { flex: 1; overflow-y: auto; padding: 0 8px 8px; }
-  .sess {
-    padding: 9px 12px; border-radius: var(--radius-lg); margin: 2px 0;
-    cursor: pointer; position: relative; border: 1px solid transparent;
-    transition: var(--ease);
-    display: flex; align-items: center; gap: 6px;
-  }
-  .sess:hover { background: var(--gray-50); }
-  .sess.active { background: var(--blue-50); border-color: var(--blue-100); }
-  .sess.active::before {
-    content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px;
-    border-radius: 0 3px 3px 0; background: var(--blue);
-  }
-  .sess .info { flex: 1; min-width: 0; overflow: hidden; }
-  .sess .name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-  .sess.active .name { font-weight: 700; }
-  .sess .meta { font-size: 11px; color: var(--gray-500); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-  .sess .del {
-    flex-shrink: 0; opacity: 0; transition: opacity .15s ease;
-    background: transparent; border: none; color: var(--gray-500); cursor: pointer;
-    width: 24px; height: 24px; border-radius: 6px; font-size: 16px; line-height: 1;
-    display: flex; align-items: center; justify-content: center;
-  }
-  .sess:hover .del { opacity: .7; }
-  .sess .del:hover { opacity: 1 !important; background: var(--red-soft); color: var(--red); }
-  #sidebar.collapsed .sess { justify-content: center; padding: 9px 6px; }
-  #sidebar.collapsed .sess .info, #sidebar.collapsed .sess .del { display: none; }
-  #sidebar.collapsed .sess .avatar {
-    display: flex; align-items: center; justify-content: center;
-    width: 28px; height: 28px; border-radius: 50%;
-    background: var(--gray-100); color: var(--gray-700); font-size: 12px; font-weight: 700;
-  }
-  .sess .avatar { display: none; }
-  #sidebar.collapsed .sess .avatar { display: flex; }
-  #sidebar.collapsed .sess.active .avatar { background: var(--blue); color: #fff; }
-
-  /* ========== 主区域 ========== */
-  #main { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--gray-50); }
-
-  header {
-    height: 56px; position: sticky; top: 0; z-index: 10;
-    padding: 0 24px; display: flex; align-items: center; gap: 14px;
-    background: rgba(255,255,255,.78); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
-    border-bottom: 1px solid var(--gray-200);
-  }
-  header h1 { font-size: 16px; font-weight: 900; letter-spacing: -.02em; margin: 0; color: var(--gray-900); }
-
-  /* 项目切换器（顶栏下拉） */
-  .proj-switcher { position: relative; }
-  .ps-current {
-    display: flex; align-items: center; gap: 8px;
-    background: var(--gray-50); border: 1px solid var(--gray-200);
-    border-radius: var(--radius-lg); padding: 7px 12px; cursor: pointer;
-    font-size: 13px; font-weight: 600; color: var(--gray-700);
-    transition: var(--ease);
-  }
-  .ps-current:hover { background: #fff; border-color: var(--blue-100); color: var(--blue-dark); }
-  .ps-current .ps-label { font-size: 11px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; color: var(--gray-500); }
-  .ps-current .ps-name { max-width: 160px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-  .ps-current .ps-caret { font-size: 10px; color: var(--gray-500); }
-  .ps-menu {
-    position: absolute; top: calc(100% + 6px); left: 0; min-width: 240px;
-    background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
-    box-shadow: var(--shadow-3); padding: 6px; z-index: 20;
-    display: none;
-  }
-  .ps-menu.open { display: block; animation: zoomIn .2s ease; }
-  .ps-item {
-    padding: 8px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--gray-700);
-    display: flex; align-items: center; gap: 8px; transition: background .15s ease;
-  }
-  .ps-item:hover { background: var(--blue-50); color: var(--blue-dark); }
-  .ps-item.active { background: var(--blue-50); color: var(--blue-dark); font-weight: 700; }
-  .ps-item .ps-check { margin-left: auto; color: var(--blue); font-weight: 900; opacity: 0; }
-  .ps-item.active .ps-check { opacity: 1; }
-  .ps-sep { height: 1px; background: var(--gray-100); margin: 4px 6px; }
-  .ps-manage { color: var(--blue); font-weight: 600; }
-
-  #sid-badge {
-    margin-left: auto;
-    background: var(--blue-50); color: var(--blue-dark);
-    border: 1px solid var(--blue-100);
-    border-radius: 999px; padding: 4px 14px; font-size: 12px; font-weight: 600;
-    max-width: 46%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
-  }
-
-  /* RAG 控制条（P0‑A）：紧贴 sid-badge，胶囊样式 */
-  #rag-bar {
-    display: flex; align-items: center; gap: 8px;
-    background: var(--gray-50); border: 1px solid var(--gray-200);
-    border-radius: 999px; padding: 3px 10px;
-    font-size: 12px; color: var(--gray-700);
-  }
-  #rag-bar label.rag-switch {
-    display: inline-flex; align-items: center; gap: 6px;
-    cursor: pointer; user-select: none;
-  }
-  #rag-bar input[type=checkbox] {
-    width: 14px; height: 14px; accent-color: var(--blue);
-    margin: 0;
-  }
-  #rag-bar input[type=checkbox]:disabled + span { color: var(--gray-500); cursor: not-allowed; }
-  #rag-bar .rag-stats { font-variant-numeric: tabular-nums; color: var(--gray-500); }
-  #rag-bar .rag-stats.ready { color: var(--blue-dark); font-weight: 600; }
-  #rag-bar .rag-stats.zero { color: var(--gray-500); }
-  #rag-bar button {
-    background: var(--blue); color: #fff; border: none;
-    border-radius: 999px; padding: 4px 12px; font-size: 12px; font-weight: 700;
-    cursor: pointer;
-  }
-  #rag-bar button:disabled { background: var(--gray-200); color: var(--gray-500); cursor: not-allowed; }
-  #rag-bar button:hover:not(:disabled) { background: var(--blue-dark); }
-
-  /* 聊天区 */
-  #chat { flex: 1; overflow-y: auto; padding: 24px 24px 32px; max-width: 880px; width: 100%; margin: 0 auto; }
-  .msg { display: flex; margin: 12px 0; animation: zoomIn .25s ease; }
-  .msg .bubble {
-    max-width: 74%; padding: 11px 16px; border-radius: var(--radius-xl);
-    white-space: pre-wrap; line-height: 1.6; font-size: 14px; letter-spacing: .01em;
-  }
-  .msg.user { justify-content: flex-end; }
-  .msg.user .bubble {
-    background: linear-gradient(135deg, #1a73e8, #4285f4); color: #fff;
-    border-bottom-right-radius: 6px; box-shadow: var(--shadow-2);
-  }
-  .msg.assistant { align-items: flex-start; }
-  .msg.assistant .bubble {
-    background: #fff; border: 1px solid var(--gray-200);
-    border-bottom-left-radius: 6px; box-shadow: var(--shadow-1);
-  }
-  .msg.assistant::before {
-    content: ""; width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
-    margin: 16px 8px 0 0; background: var(--blue);
-    box-shadow: 0 0 0 0 rgba(26,115,232,.4);
-    animation: auraPulse 2.2s ease-in-out infinite;
-  }
-  .msg.progress .bubble {
-    background: var(--blue-50); border: 1px dashed var(--blue-soft); font-size: 13px; color: var(--gray-700);
-  }
-  .msg.error .bubble { background: var(--red-soft); border: 1px solid #f5c6c0; color: #b31412; }
-  .progress-item { display: block; }
-  .progress-item.ok::before { content: "✔ "; color: var(--green); font-weight: 700; }
-  .progress-item.warn::before { content: "⚠ "; color: #b06000; font-weight: 700; }
-  .actions { margin-top: 8px; }
-  .actions a {
-    display: inline-block; margin: 4px 6px 0 0; background: var(--blue); color: #fff;
-    padding: 6px 14px; border-radius: 999px; text-decoration: none; font-size: 13px; font-weight: 600;
-    box-shadow: 0 1px 2px rgba(26,115,232,.4); transition: var(--ease);
-  }
-  .actions a:hover { background: var(--blue-dark); transform: translateY(-1px); }
-  .typing { color: var(--gray-500); font-size: 13px; font-style: italic; animation: auraPulse 1.4s ease-in-out infinite; }
-
-  /* 上传条 */
-  #upload-bar { background: #fff; border-top: 1px solid var(--gray-200); padding: 10px 24px; font-size: 13px; }
-  #upload-bar-inner { max-width: 880px; margin: 0 auto; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
-  #upload-bar select {
-    font-size: 13px; padding: 8px 12px; border: 1px solid var(--gray-300); border-radius: var(--radius-lg);
-    background: #fff; color: var(--gray-900); cursor: pointer; outline: none; transition: var(--ease);
-  }
-  #upload-bar select:focus { border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue-50); }
-  .file-pick {
-    display: inline-block; padding: 8px 14px; border: 1px solid var(--gray-300); border-radius: var(--radius-lg);
-    background: var(--gray-50); color: var(--gray-700); font-size: 13px; font-weight: 600;
-    cursor: pointer; transition: var(--ease);
-  }
-  .file-pick:hover { background: var(--blue-50); color: var(--blue-dark); border-color: var(--blue-100); }
-  #upload-btn {
-    background: var(--gray-100); border: 1px solid var(--gray-200); color: var(--gray-700);
-    border-radius: var(--radius-lg); padding: 8px 16px; cursor: pointer; font-size: 13px; font-weight: 600;
-    transition: var(--ease);
-  }
-  #upload-btn:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
-  #upload-status { color: var(--gray-500); font-size: 12px; }
-  #proj-hint {
-    color: #b06000; font-size: 12px; background: #fef7e0; border: 1px solid #fde293;
-    border-radius: 8px; padding: 4px 10px;
-  }
-  /* P3‑4：上传类型的 label 在视觉上隐藏（保留可访问性） */
-  label.vh {
-    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
-    overflow: hidden; clip: rect(0,0,0,0); border: 0;
-  }
-
-  /* 输入区 */
-  #composer { border-top: 1px solid var(--gray-200); background: #fff; padding: 14px 24px 18px; }
-  #composer-inner { max-width: 880px; margin: 0 auto; display: flex; gap: 10px; align-items: center; }
-  #input {
-    flex: 1; border: 1px solid var(--gray-300); border-radius: 999px;
-    padding: 11px 18px; font-size: 14px; outline: none; background: var(--gray-50);
-    transition: var(--ease); color: var(--gray-900);
-  }
-  #input:focus { border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px var(--blue-50); }
-  #input::placeholder { color: var(--gray-500); }
-  #send {
-    background: var(--blue); color: #fff; border: none; border-radius: 999px;
-    padding: 11px 24px; cursor: pointer; font-size: 14px; font-weight: 700;
-    box-shadow: 0 1px 2px rgba(26,115,232,.4); transition: var(--ease);
-  }
-  #send:hover:not(:disabled) { background: var(--blue-dark); box-shadow: var(--shadow-2); transform: translateY(-1px); }
-  #send:active:not(:disabled) { transform: translateY(0); }
-  #send:disabled { opacity: .45; cursor: not-allowed; }
-
-  /* 项目抽屉（主区右侧滑入） */
-  #proj-drawer {
-    position: fixed; top: 0; right: 0; height: 100vh; width: 460px;
-    background: #fff; border-left: 1px solid var(--gray-200);
-    box-shadow: -8px 0 32px rgba(60,64,67,.12);
-    transform: translateX(100%); transition: transform .3s cubic-bezier(.2,0,0,1);
-    z-index: 100; display: flex; flex-direction: column;
-  }
-  #proj-drawer.open { transform: translateX(0); }
-  .drawer-head {
-    height: 56px; padding: 0 20px; display: flex; align-items: center; gap: 12px;
-    border-bottom: 1px solid var(--gray-200); background: rgba(255,255,255,.95);
-    backdrop-filter: blur(8px); flex-shrink: 0;
-  }
-  .drawer-head h2 { font-size: 15px; font-weight: 900; letter-spacing: -.01em; margin: 0; color: var(--gray-900); flex: 1; }
-  .drawer-close {
-    background: var(--gray-100); border: none; color: var(--gray-700);
-    width: 32px; height: 32px; border-radius: 50%; cursor: pointer;
-    font-size: 18px; line-height: 1; display: flex; align-items: center; justify-content: center;
-    transition: var(--ease);
-  }
-  .drawer-close:hover { background: var(--red-soft); color: var(--red); }
-  .drawer-body { flex: 1; display: flex; min-height: 0; }
-  .drawer-list {
-    width: 38%; border-right: 1px solid var(--gray-100); overflow-y: auto;
-    padding: 10px 8px; background: var(--gray-50);
-    display: flex; flex-direction: column; gap: 2px;
-  }
-  .drawer-item {
-    padding: 10px 12px; border-radius: 10px; cursor: pointer; font-size: 13px;
-    color: var(--gray-700); border: 1px solid transparent; transition: var(--ease);
-    display: flex; align-items: center; gap: 8px;
-  }
-  .drawer-item:hover { background: #fff; border-color: var(--gray-200); }
-  .drawer-item.active { background: #fff; border-color: var(--blue-100); color: var(--blue-dark); font-weight: 700; box-shadow: var(--shadow-1); }
-  .drawer-item .di-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-  .drawer-item .di-new { color: var(--blue); }
-  .drawer-item.di-create {
-    border: 1px dashed var(--blue-100); background: var(--blue-50);
-    color: var(--blue-dark); font-weight: 700; justify-content: center; gap: 4px;
-  }
-  .drawer-item.di-create:hover { background: var(--blue-100); border-color: var(--blue); }
-  .drawer-form { flex: 1; overflow-y: auto; padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
-  .drawer-form label { font-size: 11px; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 2px; display: block; }
-  .drawer-form input {
-    width: 100%; padding: 8px 11px; border: 1px solid var(--gray-200); border-radius: 8px;
-    font-size: 13px; color: var(--gray-900); background: #fff; transition: var(--ease);
-  }
-  .drawer-form input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue-50); }
-  .drawer-form input:read-only { background: var(--gray-50); color: var(--gray-500); }
-  .drawer-form .field { display: flex; flex-direction: column; }
-  .drawer-form .drawer-hint { margin: 0 0 6px; }
-  .drawer-form details.advanced { border: 1px solid var(--gray-200); border-radius: 8px; padding: 8px 12px; background: var(--gray-50); }
-  .drawer-form details.advanced > summary { cursor: pointer; font-size: 12px; font-weight: 700; color: var(--gray-700); letter-spacing: .02em; }
-  .drawer-form details.advanced[open] { padding-bottom: 10px; }
-  .drawer-form details.advanced .field { margin-top: 8px; }
-  .drawer-form input.invalid { border-color: var(--red) !important; box-shadow: 0 0 0 2px var(--red-soft) !important; }
-  .drawer-actions { display: flex; gap: 8px; margin-top: 8px; }
-  .drawer-actions button { flex: 1; padding: 10px; border: none; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600; transition: var(--ease); }
-  .btn-save { background: var(--blue); color: #fff; }
-  .btn-save:hover { background: var(--blue-dark); }
-  .btn-delete { background: var(--red-soft); color: var(--red); border: 1px solid #f5c6c0 !important; }
-  .btn-delete:hover { background: var(--red); color: #fff; }
-  .drawer-hint { font-size: 11px; color: var(--gray-500); line-height: 1.5; padding: 8px 0; }
-
-  @keyframes auraPulse {
-    0%, 100% { opacity: 1; }
-    50% { opacity: .45; }
-  }
-  @keyframes zoomIn {
-    from { opacity: 0; transform: scale(.97); }
-    to { opacity: 1; transform: scale(1); }
-  }
-  @media (max-width: 860px) {
-    #sidebar { width: 220px; }
-    #sidebar.collapsed { width: 48px; }
-    #sid-badge { display: none; }
-    #proj-drawer { width: 100vw; }
-  }
-</style>
+<link rel="stylesheet" href="/chat.css">
 </head>
 <body>
 <div id="sidebar">
@@ -506,710 +121,5 @@
 
 <script src="/chat_state.js"></script>
 <script src="/chat_ws.js"></script>
-<script>
-let sid = null;
-let progressWs = null;
-let draftProject = null;     // 下一空白会话将绑定/已绑的项目（原 currentProject）
-let activeProject = null;    // 当前已落库会话绑定的项目（来自后端）
-let projects = [];
-let drawerOpen = false;
-let drawerSelected = null;   // 当前抽屉中编辑的项目名（null = 新建模式）
-let lastTriggerEl = null;    // 打开抽屉/下拉前的焦点元素（C1）
-let drawerDirty = false;     // 抽屉表单是否有未保存改动（B6）
-  let drawerSnapshot = null;   // loadDrawerForm 时的字段快照（B6）
-
-// 状态逻辑统一走 chat_state.js；若静态路由未就绪则回退内联实现，避免整页脚本崩溃
-const GenesisState = window.GenesisState || {
-  autoBindProject: (d, p) => (d === null && p.length ? p[0].name : (d && !p.find(x => x.name === d) ? (p.length ? p[0].name : null) : d)),
-  shouldHideUploadSelect: () => false,
-  resolveUploadType: (_a, _d, v) => v,
-  computeDrawerSnapshot: (f) => f.map(x => (x == null ? '' : String(x)).trim()).join(String.fromCharCode(1)),
-  isDrawerDirty: (n, s) => n !== s,
-  buildWelcome: (d) => d === null ? '请新建项目或者选择项目'
-    : '你好！我是 Genesis 概要设计书生成 Agent。请先上传要件定义 xlsx（模板/规则/代码库已由项目「' + d + '」提供）。',
-};
-
-const chatEl = document.getElementById('chat');
-const inputEl = document.getElementById('input');
-const sendBtn = document.getElementById('send');
-const badge = document.getElementById('sid-badge');
-const psMenu = document.getElementById('ps-menu');
-const psName = document.getElementById('ps-name');
-const drawer = document.getElementById('proj-drawer');
-
-function addMsg(role, html) {
-  const m = document.createElement('div');
-  m.className = 'msg ' + role;
-  m.innerHTML = '<div class="bubble">' + html + '</div>';
-  chatEl.appendChild(m);
-  chatEl.scrollTop = chatEl.scrollHeight;
-  return m;
-}
-function esc(s) { return String(s).replace(/[&<>"']/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c])); }
-function showTyping() { return addMsg('assistant', '<span class="typing">思考中…</span>'); }
-
-async function api(method, url, body) {
-  const opt = { method, headers: {} };
-  if (body !== undefined) { opt.headers['Content-Type'] = 'application/json'; opt.body = JSON.stringify(body); }
-  const r = await fetch(url, opt);
-  const data = await r.json().catch(() => ({}));
-  if (!r.ok) throw new Error(data.detail?.message || r.status);
-  return data;
-}
-
-// ---------- 会话列表 ----------
-async function refreshSessions() {
-  const box = document.getElementById('session-list');
-  if (draftProject === null) { box.innerHTML = ''; return; }  // 未选项目 → 无历史
-  const list = await api('GET', '/api/sessions?user_id=default&project=' + encodeURIComponent(draftProject));
-  box.innerHTML = '';
-  list.sort((a, b) => (b.updated_at || '').localeCompare(a.updated_at || ''));
-  for (const s of list) {
-    const el = document.createElement('div');
-    el.className = 'sess' + (s.session_id === sid ? ' active' : '');
-    const proj = s.project ? ' · ' + esc(s.project) : '';
-    // P3‑1：取首字符（含中文/日文/英文）作 avatar，并用名字 hash 选色，避免重名混淆
-    const rawName = (s.name || '新').trim();
-    const avatar = rawName ? Array.from(rawName)[0] : '新';
-    const palette = ['#1a73e8', '#34a853', '#fbbc05', '#ea4335', '#8e24aa', '#0097a7', '#5f6368'];
-    let h = 0;
-    for (let i = 0; i < rawName.length; i++) h = (h * 31 + rawName.charCodeAt(i)) | 0;
-    const color = palette[Math.abs(h) % palette.length];
-    el.innerHTML =
-      '<div class="avatar" style="background:' + color + ';">' + esc(avatar) + '</div>' +
-      '<div class="info">' +
-        '<div class="name">' + esc(s.name || '新会话') + '</div>' +
-        '<div class="meta">' + esc(s.status) + proj + '</div>' +
-      '</div>' +
-      '<button class="del" title="删除会话" aria-label="删除会话 ' + esc(rawName) + '">×</button>';
-    el.querySelector('.info').onclick = () => loadSession(s.session_id);
-    const delBtn = el.querySelector('.del');
-    delBtn.onclick = (ev) => { ev.stopPropagation(); deleteSession(s.session_id); };
-    box.appendChild(el);
-  }
-}
-
-async function deleteSession(targetSid) {
-  if (!confirm('确认删除该会话？此操作不可撤销。')) return;
-  try {
-    await api('DELETE', '/api/sessions/' + encodeURIComponent(targetSid));
-  } catch (e) {
-    addMsg('error', '删除失败：' + esc(String(e)));
-    return;
-  }
-  if (targetSid === sid) {
-    // 删除的是当前会话 → 自动新建并清空
-    await newSession();
-  } else {
-    await refreshSessions();
-  }
-}
-
-// ---------- 项目配置 ----------
-async function loadProjects() {
-  try {
-    projects = await api('GET', '/api/projects');
-  } catch (e) {
-    projects = [];
-  }
-  // 启动自动绑首项 / 已删项目回退首项（统一由 GenesisState.autoBindProject 处理）
-  draftProject = GenesisState.autoBindProject(draftProject, projects);
-  applyProjectContext();
-  renderProjectSwitcher();
-  renderDrawerList();
-  if (drawerOpen) loadDrawerForm(drawerSelected);
-}
-
-function applyProjectContext() {
-  psName.textContent = draftProject || '未选择';
-}
-
-function renderProjectSwitcher() {
-  let html = '<div class="ps-item' + (draftProject === null ? ' active' : '') + '" data-name="">'
-    + '<span>不选择项目</span><span class="ps-check">✓</span></div>';
-  for (const p of projects) {
-    html += '<div class="ps-item' + (p.name === draftProject ? ' active' : '') + '" data-name="' + esc(p.name) + '">'
-      + '<span>' + esc(p.display_name || p.name) + '</span><span class="ps-check">✓</span></div>';
-  }
-  html += '<div class="ps-sep"></div>'
-    + '<div class="ps-item ps-manage" data-manage="1">+ 项目管理（打开抽屉）</div>';
-  psMenu.innerHTML = html;
-  psMenu.querySelectorAll('.ps-item[data-name]').forEach(it => {
-    it.onclick = () => {
-      if (!guardDrawerDirty()) return;
-      draftProject = it.dataset.name === '' ? null : it.dataset.name;
-      applyProjectContext();
-      renderProjectSwitcher();
-      updateUploadBar();
-      toggleProjectSwitcher(false);
-    };
-  });
-  psMenu.querySelectorAll('.ps-item[data-manage]').forEach(it => {
-    it.onclick = () => {
-      if (!guardDrawerDirty()) return;
-      lastTriggerEl = it;
-      toggleProjectSwitcher(false);
-      openProjectDrawer(drawerSelected);
-    };
-  });
-}
-
-function toggleProjectSwitcher(force) {
-  const willOpen = force === undefined ? !psMenu.classList.contains('open') : !!force;
-  psMenu.classList.toggle('open', willOpen);
-}
-
-// ---------- 抽屉 ----------
-function openProjectDrawer(projectName) {
-  drawerOpen = true;
-  toggleProjectSwitcher(false);
-  drawer.classList.add('open');
-  const sel = (projectName === undefined || projectName === null) ? drawerSelected : projectName;
-  try { loadDrawerForm(sel); } catch (e) { console.error(e); }
-  renderDrawerList();   // 始终渲染左侧列表（含 +新建项目）
-}
-
-function closeProjectDrawer() {
-  if (!guardDrawerDirty()) return;
-  drawerOpen = false;
-  drawer.classList.remove('open');
-}
-
-function loadDrawerForm(projectName) {
-  drawerSelected = (projectName === undefined) ? drawerSelected : projectName;
-  const nameEl = document.getElementById('pf-name');
-  const dispEl = document.getElementById('pf-display');
-  const tplEl = document.getElementById('pf-template');
-  const wrEl = document.getElementById('pf-write');
-  const rulesEl = document.getElementById('pf-rules');
-  const codeEl = document.getElementById('pf-code');
-  const designEl = document.getElementById('pf-design');
-  const delBtn = document.getElementById('pf-delete');
-  if (drawerSelected) {
-    const p = projects.find(x => x.name === drawerSelected);
-    if (p) {
-      nameEl.value = p.name; nameEl.readOnly = true;
-      dispEl.value = p.display_name || '';
-      tplEl.value = p.template || '';
-      wrEl.value = p.write_instruction || '';
-      rulesEl.value = (p.rules || []).join(', ');
-      codeEl.value = p.existing_system_code_dir || '';
-      designEl.value = p.design_docs_dir || '';
-      delBtn.hidden = false;
-    }
-  } else {
-    nameEl.value = ''; nameEl.readOnly = false;
-    dispEl.value = '';
-    tplEl.value = ''; wrEl.value = ''; rulesEl.value = ''; codeEl.value = ''; designEl.value = '';
-    delBtn.hidden = true;
-  }
-  // B6：记录字段快照用于脏检测
-  drawerSnapshot = drawerSnapshotNow();
-  renderDrawerList();
-}
-
-// B6：抽屉未保存变更守卫
-function drawerSnapshotNow() {
-  return GenesisState.computeDrawerSnapshot([
-    document.getElementById('pf-name').value,
-    document.getElementById('pf-display').value,
-    document.getElementById('pf-template').value,
-    document.getElementById('pf-write').value,
-    document.getElementById('pf-rules').value,
-    document.getElementById('pf-code').value,
-    document.getElementById('pf-design').value,
-  ]);
-}
-function isDrawerDirty() {
-  if (!drawerOpen || drawerSnapshot === null) return false;
-  return GenesisState.isDrawerDirty(drawerSnapshotNow(), drawerSnapshot);
-}
-function guardDrawerDirty() {
-  if (isDrawerDirty()) return confirm('有未保存的修改，确定放弃？');
-  return true;
-}
-
-// P0‑C：抽屉字段级红框。命中关键字 → 给对应输入加 .invalid 3 秒后清除。
-// 关键字与 store.py 的 ProjectConfigError 中文 label 对齐。
-const PF_LABEL_TO_FIELD = {
-  '项目名': 'pf-name',
-  '模板': 'pf-template',
-  '做成说明书': 'pf-write',
-  '规则': 'pf-rules',
-  '既有系统代码库': 'pf-code',
-  '既有设计文档目录': 'pf-design',
-};
-function clearPfInvalid() {
-  ['pf-name','pf-display','pf-template','pf-write','pf-rules','pf-code','pf-design']
-    .forEach(id => document.getElementById(id).classList.remove('invalid'));
-}
-function flagPfInvalidByMessage(message) {
-  if (!message) return;
-  for (const [label, fid] of Object.entries(PF_LABEL_TO_FIELD)) {
-    if (message.indexOf(label) >= 0) {
-      const el = document.getElementById(fid);
-      el.classList.add('invalid');
-      el.focus();
-      setTimeout(() => el.classList.remove('invalid'), 3000);
-    }
-  }
-}
-// 任意输入清掉自身红框（避免"红着输入"误导）
-['pf-name','pf-display','pf-template','pf-write','pf-rules','pf-code','pf-design']
-  .forEach(id => document.getElementById(id).addEventListener('input', (e) => e.target.classList.remove('invalid')));
-
-function renderDrawerList() {
-  let html = '<div class="drawer-item di-create' + (drawerSelected === null ? ' active' : '') + '" data-name="">'
-    + '<span class="di-new">＋</span><span class="di-name">新建项目</span></div>';
-  for (const p of projects) {
-    html += '<div class="drawer-item' + (p.name === drawerSelected ? ' active' : '') + '" data-name="' + esc(p.name) + '">'
-      + '<span class="di-name">' + esc(p.display_name || p.name) + '</span></div>';
-  }
-  const box = document.getElementById('drawer-list');
-  box.innerHTML = html;
-  box.querySelectorAll('.drawer-item').forEach(it => {
-    it.onclick = () => {
-      if (!guardDrawerDirty()) return;
-      const n = it.dataset.name === '' ? null : it.dataset.name;
-      loadDrawerForm(n);
-    };
-  });
-}
-
-async function saveDrawerProject() {
-  clearPfInvalid();
-  const body = {
-    name: document.getElementById('pf-name').value.trim(),
-    display_name: document.getElementById('pf-display').value.trim(),
-    template: document.getElementById('pf-template').value.trim(),
-    write_instruction: document.getElementById('pf-write').value.trim(),
-    rules: document.getElementById('pf-rules').value.split(',').map(s => s.trim()).filter(Boolean),
-    existing_system_code_dir: document.getElementById('pf-code').value.trim(),
-    design_docs_dir: document.getElementById('pf-design').value.trim(),
-  };
-  if (!body.name) {
-    flagPfInvalidByMessage('项目名');
-    addMsg('error', '项目名不能为空');
-    return;
-  }
-  try {
-    const cfg = await api('POST', '/api/projects', body);
-    draftProject = cfg.name;
-    drawerSelected = cfg.name;
-    await loadProjects();
-    addMsg('assistant', '项目「' + esc(cfg.display_name || cfg.name) + '」已保存。');
-    closeProjectDrawer();
-  } catch (e) {
-    // 400 / PROJECT_CONFIG_INVALID：字段级红框定位
-    flagPfInvalidByMessage(String(e));
-    addMsg('error', '保存项目失败：' + esc(String(e)));
-  }
-}
-
-async function deleteDrawerProject() {
-  if (!drawerSelected) return;
-  if (!confirm('确认删除项目「' + drawerSelected + '」？此操作不可撤销。')) return;
-  const deleted = drawerSelected;
-  try {
-    await api('DELETE', '/api/projects/' + encodeURIComponent(deleted));
-  } catch (e) {
-    addMsg('error', '删除项目失败：' + esc(String(e)));
-    return;
-  }
-  addMsg('assistant', '项目「' + esc(deleted) + '」已删除。');
-  // P1‑F：先记住被删的，再清 drawerSelected；避免"先 null 后比较"恒假 bug
-  drawerSelected = null;
-  if (draftProject === deleted) {
-    // 当前选的就是被删的项目 → 清空偏好（autoBindProject 会从剩余项目重选）
-    draftProject = null;
-  }
-  await loadProjects();
-  loadDrawerForm(null);
-}
-
-// ---------- 侧边栏折叠 ----------
-function toggleSidebar(force) {
-  const el = document.getElementById('sidebar');
-  const willCollapse = force === undefined ? !el.classList.contains('collapsed') : !!force;
-  el.classList.toggle('collapsed', willCollapse);
-  try { localStorage.setItem('genesis_sidebar_collapsed', willCollapse ? '1' : '0'); } catch (e) { /* localStorage 不可用时忽略 */ }
-}
-
-// ---------- 上传区：始终显示完整类型下拉 ----------
-// P0‑B：选项目时也允许补传 template / write_instruction / rules / existing_system，
-// 不再藏起入口。"项目已预置 template 时再上传 template"在上传处用 confirm() 显式确认。
-function updateUploadBar() {
-  const sel = document.getElementById('file-type');
-  const hint = document.getElementById('proj-hint');
-  if (sel) sel.style.display = '';
-  if (!hint) return;
-  // 默认 file_type 仍为 requirements（最常用），但下拉始终可改。
-  if (sel && sel.value !== 'requirements') sel.value = 'requirements';
-  if (draftProject) {
-    hint.textContent = '默认上传要件定义 xlsx；如需补传模板/规则/既有系统 zip，请在下拉中选择对应类型。';
-  } else {
-    hint.textContent = '请选择 file_type 后上传（未选项目时，模板/规则仍可手动上传）。';
-  }
-}
-
-// ---------- 空态/欢迎渲染 ----------
-function renderEmptyOrWelcome() {
-  chatEl.innerHTML = '';
-  // P1‑F：欢迎文由 GenesisState.buildWelcome 统一来源
-  addMsg('assistant', GenesisState.buildWelcome(draftProject));
-}
-
-// ---------- 会话创建/加载 ----------
-async function newSession() {
-   if (progressWs) { try { progressWs.close(); } catch (e) {} } progressWs = null;
-  sid = null;
-  activeProject = null;
-  // 保留 draftProject（当前顶栏已选项目），使新会话继承项目绑定（§4.2）
-  try { localStorage.removeItem('genesis_session'); } catch (e) { /* 忽略 */ }
-  chatEl.innerHTML = '';
-  badge.textContent = '未创建会话';
-  updateUploadBar();
-  await refreshRagStats();
-  await refreshSessions();
-  renderEmptyOrWelcome();
-}
-
-async function loadSession(id) {
-  try {
-    const rec = await api('GET', '/api/sessions/' + encodeURIComponent(id));
-    sid = id;
-    activeProject = rec.project || null;
-    // P1‑D：不再隐式覆盖 draftProject。会话事实(activeProject)与用户偏好(draftProject)
-    // 分层；若不一致，由提示条让用户主动选择。
-    // draftProject = rec.project || null;   // 删除：原行为会悄悄改用户偏好
-    applyProjectContext();
-    badge.textContent = '会话: ' + (rec.name || '新会话');
-    if (progressWs) { try { progressWs.close(); } catch (e) {} }
-    progressWs = GenesisWS.connectProgressWs(id, {
-      onProgress: (e) => GenesisWS.applyProgressEvent(e, (role, text) => addMsg(role, text)),
-      onClose: () => {},
-    });
-    const msgs = await api('GET', '/api/chat/' + encodeURIComponent(id) + '/messages');
-    chatEl.innerHTML = '';
-    for (const m of msgs) {
-      const roleMap = { user: 'user', progress: 'progress', error: 'error' };
-      const role = roleMap[m.role] || 'assistant';
-      addMsg(role, esc(m.content));
-    }
-    updateUploadBar();
-    await refreshRagStats();
-    await refreshSessions();
-    try { localStorage.setItem('genesis_session', sid); } catch (e) { /* 忽略 */ }
-    renderProjectMismatchHint();
-  } catch (e) {
-    addMsg('error', '加载会话失败：' + esc(String(e)));
-  }
-}
-
-// P1‑D：项目不匹配提示条。activeProject 与 draftProject 不一致时显示，
-// "切到该项目" → 写 draftProject = activeProject，刷新；
-// "保留"      → 写入 sessionStorage 标记，刷新；后续 loadSession 不再提示。
-function renderProjectMismatchHint() {
-  const old = document.getElementById('proj-mismatch-hint');
-  if (old) old.remove();
-  if (!sid) return;
-  if (!activeProject) return;
-  if (activeProject === draftProject) return;
-  // 已"保留"过本会话的不再提示
-  let skipped = {};
-  try { skipped = JSON.parse(sessionStorage.getItem('genesis_skipped_project_hint') || '{}'); } catch (e) { skipped = {}; }
-  if (skipped[sid] === activeProject) return;
-  const wrap = document.createElement('div');
-  wrap.id = 'proj-mismatch-hint';
-  wrap.className = 'msg assistant';
-  wrap.innerHTML =
-    '<div class="bubble">' +
-    '该会话属于项目 <strong>' + esc(activeProject) + '</strong>，' +
-    '当前顶栏项目为 <strong>' + esc(draftProject || '（未选择）') + '</strong>。' +
-    '<div class="actions">' +
-    '<a href="#" data-act="switch">切到该项目</a>' +
-    '<a href="#" data-act="keep">保留当前项目</a>' +
-    '</div></div>';
-  chatEl.prepend(wrap);
-  wrap.querySelector('[data-act="switch"]').onclick = (e) => {
-    e.preventDefault();
-    draftProject = activeProject;
-    applyProjectContext();
-    renderProjectSwitcher();
-    updateUploadBar();
-    refreshSessions();
-    wrap.remove();
-  };
-  wrap.querySelector('[data-act="keep"]').onclick = (e) => {
-    e.preventDefault();
-    try {
-      skipped[sid] = activeProject;
-      sessionStorage.setItem('genesis_skipped_project_hint', JSON.stringify(skipped));
-    } catch (er) { /* 忽略 */ }
-    wrap.remove();
-  };
-}
-
-// P2‑H：send() in-flight 锁，防止快速双击产生重复请求
-let sendInFlight = false;
-async function send() {
-  if (sendInFlight) return;   // in-flight 期间再次进入直接忽略
-  const text = inputEl.value.trim();
-  if (!text) return;
-  sendInFlight = true;
-  if (!sid) {
-    // 首条消息：先落库会话（D-v4）
-    try {
-      const d = await api('POST', '/api/sessions', { user_id: 'default', project: draftProject || null });
-      sid = d.session_id;
-      activeProject = draftProject || null;
-      badge.textContent = '会话: ' + (d.name || '新会话');
-      try { localStorage.setItem('genesis_session', sid); } catch (e) { /* 忽略 */ }
-      await refreshSessions();
-    } catch (e) {
-      addMsg('error', '创建会话失败：' + esc(String(e)));
-      return;
-    }
-  }
-  if (progressWs) { try { progressWs.close(); } catch (e) {} }
-  progressWs = GenesisWS.connectProgressWs(sid, {
-    onProgress: (e) => GenesisWS.applyProgressEvent(e, (role, text) => addMsg(role, text)),
-    onClose: () => {},
-  });
-  inputEl.value = '';
-  addMsg('user', esc(text));
-  const typing = showTyping();
-  sendBtn.disabled = true;
-  try {
-    const res = await api('POST', '/api/chat/' + encodeURIComponent(sid) + '/messages', { content: text });
-    typing.remove();
-    if (res.progress && res.progress.length) {
-      const items = res.progress.map(p => '<span class="progress-item ' + (p.status || 'ok') + '">' + esc(p.step) + ': ' + esc(p.detail || '') + '</span>').join('');
-      addMsg('progress', items);
-    }
-    let replyHtml = esc(res.reply || '');
-    const s = res.status;
-    if (s === 'done' || s === 'writing') {
-      replyHtml += '<div class="actions">'
-        + '<a href="/api/sessions/' + sid + '/result/download">下载 docx</a>'
-        + '<a href="/api/sessions/' + sid + '/result/preview">预览</a>'
-        + '<a href="/api/sessions/' + sid + '/result/impact-report">影响调查书</a>'
-        + '<a href="/api/sessions/' + sid + '/result/qa-report">QA 报告</a></div>';
-    }
-    addMsg('assistant', replyHtml);
-  } catch (e) {
-    typing.remove();
-    addMsg('error', '请求失败：' + esc(String(e)));
-  } finally {
-    sendInFlight = false;
-    sendBtn.disabled = false;
-    inputEl.focus();
-  }
-}
-
-document.getElementById('send').addEventListener('click', send);
-inputEl.addEventListener('keydown', e => { if (e.key === 'Enter') send(); });
-document.getElementById('new-chat').addEventListener('click', () => newSession().catch(e => addMsg('error', esc(String(e)))));
-document.getElementById('sidebar-toggle').addEventListener('click', () => toggleSidebar());
-document.getElementById('ps-current').addEventListener('click', (e) => { e.stopPropagation(); lastTriggerEl = e.currentTarget; toggleProjectSwitcher(); });
-document.getElementById('drawer-close').addEventListener('click', closeProjectDrawer);
-document.getElementById('pf-save').addEventListener('click', saveDrawerProject);
-document.getElementById('pf-delete').addEventListener('click', deleteDrawerProject);
-
-// ---------- P0‑A：RAG 开关 + 状态徽标 + 开始影响调查 ----------
-const ragEnabledEl = document.getElementById('rag-enabled');
-const ragStatsEl   = document.getElementById('rag-stats');
-const ragBarEl     = document.getElementById('rag-bar');
-const impactBtnEl  = document.getElementById('impact-btn');
-
-const RAG_LS_KEY = 'genesis_rag_enabled';
-function readRagFlag() {
-  try { return localStorage.getItem(RAG_LS_KEY) === '1'; } catch (e) { return false; }
-}
-function writeRagFlag(v) {
-  try { localStorage.setItem(RAG_LS_KEY, v ? '1' : '0'); } catch (e) { /* 忽略 */ }
-}
-ragEnabledEl.addEventListener('change', () => { writeRagFlag(ragEnabledEl.checked); updateImpactButton(); });
-
-async function refreshRagStats() {
-  // 无 sid → 隐藏 RAG 条
-  if (!sid) {
-    ragBarEl.hidden = true;
-    return;
-  }
-  ragBarEl.hidden = false;
-  let stats = { chunks: 0, rag_enabled: false };
-  try {
-    stats = await api('GET', '/api/sessions/' + encodeURIComponent(sid) + '/rag-stats');
-  } catch (e) {
-    stats = { chunks: 0, rag_enabled: false };
-  }
-  const n = Number(stats.chunks) || 0;
-  ragStatsEl.textContent = n > 0
-    ? 'RAG 已索引 ' + n + ' 片段'
-    : 'RAG 0 片段（请上传既有系统 zip）';
-  ragStatsEl.classList.toggle('ready', n > 0);
-  ragStatsEl.classList.toggle('zero', n === 0);
-  // 开关可用性：必须先有 RAG 索引才能用
-  ragEnabledEl.disabled = n === 0;
-  if (n === 0) {
-    ragEnabledEl.checked = false;
-    writeRagFlag(false);
-    ragEnabledEl.parentElement.title = '请先在上传区选择"既有系统 zip"并上传';
-  } else {
-    ragEnabledEl.checked = readRagFlag();
-    ragEnabledEl.parentElement.title = ragEnabledEl.checked
-      ? 'RAG 检索结果会注入到 LLM prompt'
-      : '勾选后启用 RAG 检索';
-  }
-  updateImpactButton();
-}
-
-function updateImpactButton() {
-  // 已有 RAG 索引（rag-stats 决定） 且有 sid 才能影响
-  if (!sid) { impactBtnEl.disabled = true; return; }
-  const hasRag = (Number(ragStatsEl.dataset.chunks || 0) > 0) || !ragEnabledEl.disabled;
-  impactBtnEl.disabled = !hasRag;
-  impactBtnEl.textContent = ragEnabledEl.checked
-    ? '开始影响调查（启用 RAG）'
-    : '开始影响调查';
-}
-
-impactBtnEl.addEventListener('click', async () => {
-  if (!sid) { addMsg('error', '请先发送一条消息以创建会话'); inputEl.focus(); return; }
-  const useRag = !!ragEnabledEl.checked;
-  impactBtnEl.disabled = true;
-  const typing = showTyping();
-  try {
-    const url = '/api/sessions/' + encodeURIComponent(sid) + '/start-impact?use_rag=' + (useRag ? 'true' : 'false');
-    const r = await fetch(url, { method: 'POST' });
-    const d = await r.json();
-    if (!r.ok) throw new Error(d.detail?.message || r.status);
-    typing.remove();
-    addMsg('progress', '<span class="progress-item ok">影响调查已提交（use_rag=' + (useRag ? 'true' : 'false') + '）</span>');
-    // 让 WebSocket 把后续进度推上来；稍后用户可查 impact-result
-    addMsg('assistant', '影响调查已启动。完成后可在此会话点击"预览"或访问 /result/impact-report 下载报告。');
-  } catch (e) {
-    typing.remove();
-    addMsg('error', '影响调查失败：' + esc(String(e)));
-  } finally {
-    updateImpactButton();
-  }
-});
-document.addEventListener('click', (e) => {
-  // 点击切换器外部关闭下拉
-  if (!document.getElementById('proj-switcher').contains(e.target)) toggleProjectSwitcher(false);
-});
-document.addEventListener('keydown', (e) => {
-  if (e.key === 'Escape') {
-    if (psMenu.classList.contains('open')) toggleProjectSwitcher(false);
-    else if (drawerOpen) closeProjectDrawer();
-    if (lastTriggerEl) { lastTriggerEl.focus(); lastTriggerEl = null; }
-  }
-});
-
-// 客户端类型 → 扩展名白名单校验（P0‑B / P1‑E）。
-const UPLOAD_EXT_RULES = {
-  existing_system: ['.zip'],
-  requirements: ['.xlsx'],
-  template: ['.docx'],
-  write_instruction: ['.docx'],
-  rules: ['.docx', '.xlsx'],
-};
-function pickExt(name) {
-  const i = String(name).lastIndexOf('.');
-  return i >= 0 ? String(name).slice(i).toLowerCase() : '';
-}
-// 项目级预置 → 提醒：再次上传将覆盖该会话的该类型文件。
-// 这里用 activeProject/draftProject 对应的项目 config（projects[]）判定是否预置。
-function projectHasPrefixedType(ft) {
-  const name = activeProject || draftProject;
-  if (!name) return false;
-  const p = (projects || []).find(x => x.name === name);
-  if (!p) return false;
-  if (ft === 'template') return !!(p.template && p.template.trim());
-  if (ft === 'write_instruction') return !!(p.write_instruction && p.write_instruction.trim());
-  if (ft === 'existing_system') return !!(p.existing_system_code_dir && p.existing_system_code_dir.trim());
-  if (ft === 'rules') return Array.isArray(p.rules) && p.rules.length > 0;
-  return false;
-}
-
-document.getElementById('upload-btn').addEventListener('click', async () => {
-  if (!sid) { addMsg('error', '请先发送一条消息以创建会话'); inputEl.focus(); return; }
-  const sel = document.getElementById('file-type');
-  const ft = GenesisState.resolveUploadType(activeProject, draftProject, sel.value);
-  const file = document.getElementById('file-input').files[0];
-  if (!file) { addMsg('error', '请选择文件'); return; }
-  // P0‑B / P1‑E：客户端类型与扩展名校验
-  const allowed = UPLOAD_EXT_RULES[ft];
-  if (allowed) {
-    const ext = pickExt(file.name);
-    if (!ext || !allowed.includes(ext)) {
-      addMsg('error', '类型不匹配：' + esc(ft) + ' 应为 ' + allowed.join('/') + ' 文件（当前：' + esc(file.name) + '）');
-      return;
-    }
-  }
-  // P0‑B：项目已预置同类型时显式确认覆盖（不再以"藏起入口"做隐式约束）
-  if (projectHasPrefixedType(ft)) {
-    const ok = confirm('项目已预置 ' + ft + '。继续上传将覆盖该会话中的此类型文件，是否继续？');
-    if (!ok) return;
-  }
-  const fd = new FormData();
-  fd.append('file_type', ft);
-  fd.append('file', file);
-  const statusEl = document.getElementById('upload-status');
-  statusEl.textContent = '上传中…';
-  try {
-    const r = await fetch('/api/sessions/' + encodeURIComponent(sid) + '/files', { method: 'POST', body: fd });
-    const d = await r.json();
-    if (!r.ok) throw new Error(d.detail?.message || r.status);
-    statusEl.textContent = '';
-    // B5 / P1‑F：上传成功后同步 activeProject、刷新上传条与侧边栏状态
-    const rec = await api('GET', '/api/sessions/' + encodeURIComponent(sid));
-    activeProject = rec.project || null;
-    badge.textContent = '会话: ' + (rec.name || '新会话');
-    await refreshSessions();
-    updateUploadBar();   // P1‑F：上传成功后同步上传条（防状态滞后）
-    await refreshRagStats();   // P0‑A：上传 existing_system 后 RAG 索引已建
-    document.getElementById('file-input').value = '';   // 仅成功时清空
-    addMsg('user', '[上传] ' + ft + '：' + d.file_name);
-    addMsg('progress', '<span class="progress-item ok">上传完成：' + esc(d.file_name) + '（' + d.size + 'B）</span>');
-  } catch (e) {
-    statusEl.textContent = '';
-    // F1：失败保留 file-input 值，展示后端明细
-    addMsg('error', '上传失败：' + esc(String(e)));
-  }
-});
-
-// ---------- 启动：恢复侧边栏折叠态、上次会话 ----------
-(async () => {
-  try {
-    const collapsed = localStorage.getItem('genesis_sidebar_collapsed') === '1';
-    if (collapsed) document.getElementById('sidebar').classList.add('collapsed');
-  } catch (e) { /* 忽略 */ }
-  await loadProjects();
-  const saved = (() => { try { return localStorage.getItem('genesis_session'); } catch (e) { return null; } })();
-  if (saved) {
-    // P2‑H：启动恢复前显示 loading 占位，避免空 chat 一闪
-    addMsg('assistant', '正在恢复上次会话…');
-    try {
-      await loadSession(saved);
-      // P2‑7：恢复后若会话的项目已被删，清掉 localStorage 以免下次再试
-      const rec = await api('GET', '/api/sessions/' + encodeURIComponent(saved));
-      const recProj = rec && rec.project;
-      if (recProj && !projects.find(p => p.name === recProj)) {
-        try { localStorage.removeItem('genesis_session'); } catch (e) { /* 忽略 */ }
-        // 顶栏若显示的是已删项目，刷新回退
-        if (draftProject === recProj) {
-          draftProject = (projects.length > 0) ? projects[0].name : null;
-          applyProjectContext();
-        }
-      }
-      return;
-    } catch (e) { /* 忽略，新建 */ }
-  }
-  newSession().catch(e => addMsg('error', esc(String(e))));
-})();
-</script>
 </body>
 </html>