收口 MNote P0 P1 P2 审查尾项

- 归档 OnlyOffice live bridge、Page AI、mindmap、design governance 与相关 bug 条目
- 补齐 MinerU OCR 后端 runtime 合同与 smoke/test 基线
- 收口 ChatOnly/Doubao、ObjectIdentity、Page Aggregate compat 与 runtime owner 文档口径

验证：
- cargo test --manifest-path rust/Cargo.toml -p mnote-web local_ocr -- --test-threads=1
- cargo test --manifest-path rust/Cargo.toml -p mnote-web onlyoffice_bridge -- --test-threads=1
- git diff --check
- git diff --cached --check
- codegraph index . --force && codegraph status .
- codegraph sync . && codegraph status .

rust/crates/mnote-web/src/ssr/styles.rs

@@ -3898,6 +3898,7 @@ body {
 .wolai-page-ai-profile-select select,
 .wolai-page-ai-context-select select,
 .wolai-page-ai-skill-search input,
+.wolai-page-ai-skill-search select,
 .wolai-page-ai-agent-profile select {
   width: 100%;
   min-width: 0;
@@ -4499,25 +4500,48 @@ button.wolai-page-ai-message-text {
 }
 
 .wolai-page-ai-agent-picker,
-.wolai-page-ai-context-picker {
+.wolai-page-ai-context-picker,
+.wolai-page-ai-target-picker {
   position: relative;
   flex: 0 0 auto;
 }
 
 .wolai-page-ai-agent-button,
-.wolai-page-ai-context-button {
+.wolai-page-ai-context-button,
+.wolai-page-ai-target-button {
   font-size: 17px;
   line-height: 1;
 }
 
 .wolai-page-ai-agent-button[aria-expanded="true"],
-.wolai-page-ai-context-button[aria-expanded="true"] {
+.wolai-page-ai-context-button[aria-expanded="true"],
+.wolai-page-ai-target-button[aria-expanded="true"] {
   border-color: rgba(27, 28, 28, 0.32);
   background: #F7F6F4;
 }
 
+.wolai-page-ai-agent-chip,
+.wolai-page-ai-target-chip {
+  display: inline-flex;
+  align-items: center;
+  min-width: 0;
+  max-width: 180px;
+  height: 26px;
+  padding: 0 8px;
+  border: 1px solid rgba(27, 28, 28, 0.1);
+  border-radius: 999px;
+  background: #F7F6F4;
+  color: #5A5A5A;
+  font-size: 12px;
+  line-height: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 .wolai-page-ai-agent-popover,
-.wolai-page-ai-context-popover {
+.wolai-page-ai-context-popover,
+.wolai-page-ai-target-popover {
   position: absolute;
   left: 0;
   width: min(320px, calc(100vw - 44px));
@@ -4533,7 +4557,8 @@ button.wolai-page-ai-message-text {
 }
 
 .wolai-page-ai-agent-popover[hidden],
-.wolai-page-ai-context-popover[hidden] {
+.wolai-page-ai-context-popover[hidden],
+.wolai-page-ai-target-popover[hidden] {
   display: none !important;
 }
 
@@ -4552,12 +4577,26 @@ button.wolai-page-ai-message-text {
   gap: 8px;
 }
 
-.wolai-page-ai-agent-option-list {
+.wolai-page-ai-agent-option-list,
+.wolai-page-ai-target-option-list {
   display: grid;
   gap: 6px;
 }
 
-.wolai-page-ai-agent-option {
+.wolai-page-ai-agent-popover-section {
+  display: grid;
+  gap: 6px;
+}
+
+.wolai-page-ai-agent-popover-title {
+  color: #8B8782;
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+}
+
+.wolai-page-ai-agent-option,
+.wolai-page-ai-target-option {
   display: grid;
   gap: 2px;
   width: 100%;
@@ -4570,17 +4609,20 @@ button.wolai-page-ai-message-text {
   cursor: pointer;
 }
 
-.wolai-page-ai-agent-option.is-active {
+.wolai-page-ai-agent-option.is-active,
+.wolai-page-ai-target-option.is-active {
   border-color: rgba(27, 28, 28, 0.2);
   background: #F7F6F4;
 }
 
-.wolai-page-ai-agent-option-label {
+.wolai-page-ai-agent-option-label,
+.wolai-page-ai-target-option-label {
   font-size: 12px;
   font-weight: 600;
 }
 
-.wolai-page-ai-agent-option-detail {
+.wolai-page-ai-agent-option-detail,
+.wolai-page-ai-target-option-detail {
   color: #8B8782;
   font-size: 11px;
 }