feat: stabilize page AI ACP runtimes

实现并稳定页面 AI 的 ACP Hermes / ACP Reasonix 运行路径。

主要内容：

- 分离 profile 与 acpRuntime，ACP Hermes 按所选 Hermes profile 启动并注入 provider key。

- 修复 Reasonix ACP wrapper 的 API key 读取、ToolRegistry 注册、LoopEvent role 映射和 reasoning/final 分流。

- 修复 ACP agent_thought_chunk 被 untagged enum 误解析为 message.delta 的问题，补充 thought 相关单测。

- 补充页面 AI 浏览器验证 skill 证据到 7-15 设计稿，并记录严格验收标准。

- 同步提交当前仓库中已存在的 rust-web / Hermes tools / SSE / bug 文档相关改动。

验证：

- node --check scripts/reasonix-acp-wrapper.mjs

- cargo test -p mnote-web acp -- --nocapture

- 页面 AI ACP 浏览器验证：tmp/page-ai-acp-browser-UAYwyM/

rust/crates/mnote-web/src/ssr/pages/layout.rs

@@ -4117,6 +4117,10 @@ const SIDEBAR_TREE_JS: &str = r##"
     return pageAiProfileValue(selected) || 'mnoteai';
   }
 
+  function pageAiRunProfile() {
+    return String(pageUiState.pageAiAcpRuntime || '').trim() === 'reasonix' ? 'reasonix' : pageAiCurrentProfile();
+  }
+
   function pageAiMnoteToolModel() {
     return String(document.documentElement.getAttribute('data-mnote-page-ai-tool-model') || 'deepseek-v4-flash').trim() || 'deepseek-v4-flash';
   }
@@ -4570,7 +4574,8 @@ const SIDEBAR_TREE_JS: &str = r##"
         headers: { 'content-type': 'application/json' },
         body: JSON.stringify({
           sessionId: pageUiState.pageAiActiveSessionId,
-          profile: pageAiCurrentProfile(),
+          profile: pageAiRunProfile(),
+          acpRuntime: pageUiState.pageAiAcpRuntime || '',
           reason: 'page_ai_user_stop'
         })
       });
@@ -4610,6 +4615,11 @@ const SIDEBAR_TREE_JS: &str = r##"
     var source = String(skill && skill.source || '').trim();
     if (source === 'hub') return '安装';
     if (source === 'builtin') return '内置';
+    if (source === 'reasonix') {
+      if (origin === 'project') return 'Reasonix 项目';
+      if (origin === 'global') return 'Reasonix 全局';
+      return 'Reasonix';
+    }
     return '本地';
   }
 
@@ -4716,7 +4726,11 @@ const SIDEBAR_TREE_JS: &str = r##"
 
   async function pageAiLoadSkills() {
     try {
-      var response = await fetch('/api/hermes/client/skills?profile=' + encodeURIComponent(pageAiCurrentProfile()), {
+      var runtime = String(pageUiState.pageAiAcpRuntime || '').trim();
+      var params = runtime === 'reasonix'
+        ? 'runtime=reasonix'
+        : 'profile=' + encodeURIComponent(pageAiCurrentProfile());
+      var response = await fetch('/api/hermes/client/skills?' + params, {
         headers: { 'accept': 'application/json' }
       });
       var payload = await response.json().catch(function(){ return null; });
@@ -4734,6 +4748,7 @@ const SIDEBAR_TREE_JS: &str = r##"
   async function pageAiToggleSkill(skillName, enabled) {
     var name = String(skillName || '').trim();
     if (!name) return;
+    if (String(pageUiState.pageAiAcpRuntime || '').trim() === 'reasonix') return;
     var previous = null;
     pageAiSkillListEntries().forEach(function(skill) {
       if (skill.name === name && previous == null) previous = skill.enabled !== false;
@@ -4828,7 +4843,7 @@ const SIDEBAR_TREE_JS: &str = r##"
   function renderPageAiControls() {
     var drawer = ensurePageAiDrawer();
     var isAcp = pageUiState.pageAiAcpRuntime !== '';
-    var activeProfile = isAcp ? pageUiState.pageAiAcpRuntime : pageAiCurrentProfile();
+    var activeProfile = pageAiRunProfile();
     drawer.setAttribute('data-page-ai-page', pageUiState.pageAiPage || 'chat');
     drawer.setAttribute('data-mnote-acp-runtime', pageUiState.pageAiAcpRuntime || '');
     // Populate ACP runtime dropdown
@@ -4844,7 +4859,7 @@ const SIDEBAR_TREE_JS: &str = r##"
     // Show/hide Hermes-specific profile select
     var profileLabel = drawer.querySelector('[data-page-ai-hermes-profile]');
     if (profileLabel instanceof HTMLElement) {
-      profileLabel.style.display = isAcp ? 'none' : '';
+      profileLabel.style.display = pageUiState.pageAiAcpRuntime === 'reasonix' ? 'none' : '';
     }
     // When ACP is selected, populate agent panel with ACP runtime info
     var agentPanel = drawer.querySelector('[data-page-ai-agent-panel]');
@@ -4982,12 +4997,16 @@ const SIDEBAR_TREE_JS: &str = r##"
     if (skillList instanceof HTMLElement) {
       var skills = pageAiFilteredSkillEntries();
       if (!skills.length) {
-        skillList.innerHTML = '<div class="wolai-page-ai-empty">没有匹配的 Hermes skill。</div>';
+        var emptyText = String(pageUiState.pageAiAcpRuntime || '').trim() === 'reasonix'
+          ? '没有匹配的 Reasonix skill。'
+          : '没有匹配的 Hermes skill。';
+        skillList.innerHTML = '<div class="wolai-page-ai-empty">' + escapeHtml(emptyText) + '</div>';
       } else {
         skillList.innerHTML = skills.map(function(skill) {
           var sourceText = pageAiSkillOriginLabel(skill) + (skill.modified ? ' · modified' : '');
           var description = String(skill.description || '').trim();
           var hasDescription = description && description !== '---' && description !== '无描述';
+          var canToggle = skill.toggleable !== false && String(pageUiState.pageAiAcpRuntime || '').trim() !== 'reasonix';
           return '' +
             '<div class="wolai-page-ai-skill-row">' +
               '<div class="wolai-page-ai-skill-copy">' +
@@ -4997,7 +5016,7 @@ const SIDEBAR_TREE_JS: &str = r##"
                 '</div>' +
                 (hasDescription ? '<div class="wolai-page-ai-skill-desc">' + escapeHtml(description) + '</div>' : '') +
               '</div>' +
-              '<button type="button" class="wolai-page-ai-skill-switch' + (skill.enabled !== false ? ' is-on' : '') + '" data-page-ai-skill-toggle="' + escapeHtml(skill.name) + '" aria-pressed="' + (skill.enabled !== false ? 'true' : 'false') + '">' +
+              '<button type="button" class="wolai-page-ai-skill-switch' + (skill.enabled !== false ? ' is-on' : '') + '" data-page-ai-skill-toggle="' + escapeHtml(skill.name) + '" aria-pressed="' + (skill.enabled !== false ? 'true' : 'false') + '"' + (canToggle ? '' : ' disabled title="Reasonix skills 当前为只读展示"') + '>' +
                 '<span></span>' +
               '</button>' +
             '</div>';
@@ -5515,7 +5534,8 @@ const SIDEBAR_TREE_JS: &str = r##"
           workspaceId: resolveWorkspaceId(document.body),
           documentId: currentDocumentId(),
           sessionId: pageUiState.pageAiActiveSessionId,
-          profile: pageUiState.pageAiAcpRuntime || pageAiCurrentProfile(),
+          profile: pageAiRunProfile(),
+          acpRuntime: pageUiState.pageAiAcpRuntime || '',
           contextScope: pageUiState.pageAiContextScope,
           message: prompt,
           model: pageAiMnoteToolModel(),
@@ -6557,7 +6577,10 @@ const SIDEBAR_TREE_JS: &str = r##"
     if (pageAiAcpRuntimeSelect instanceof HTMLSelectElement) {
       var next = String(pageAiAcpRuntimeSelect.value || '').trim();
       pageUiState.pageAiAcpRuntime = next;
+      pageUiState.pageAiSkills = { categories: [], archived: [] };
+      pageUiState.pageAiSkillError = '';
       void pageAiLoadProfiles();
+      void pageAiLoadSkills();
       renderPageAiControls();
       renderPageAiProviderButtons();
       return;
@@ -7326,12 +7349,9 @@ mod tests {
         assert!(SIDEBAR_TREE_JS.contains(
             r#".tree-row[data-shell-mode="filetree"][data-row-id="' + escapedDocRowId + '"] > .tree-link > .tree-link-title"#
         ));
-        assert!(SIDEBAR_TREE_JS.contains(
-            r#"[data-page-title-input="true"][data-document-id="' + escaped + '"]"#
-        ));
-        assert!(SIDEBAR_TREE_JS.contains(
-            r#".wolai-breadcrumb-current [data-page-title-current]"#
-        ));
+        assert!(SIDEBAR_TREE_JS
+            .contains(r#"[data-page-title-input="true"][data-document-id="' + escaped + '"]"#));
+        assert!(SIDEBAR_TREE_JS.contains(r#".wolai-breadcrumb-current [data-page-title-current]"#));
         assert!(!SIDEBAR_TREE_JS.contains(
             r#".tree-row[data-document-id="' + escaped + '"] > .tree-link > .tree-link-title"#
         ));