feat(tiles): a header names a model read from the CLI's config as such

A session header's tooltip (tile and split) says where a model the CLI did
not report came from; the new `config` source reads
"DeepSeek · qwen3.8-27b (from config)", with the zh-CN pattern
"（来自配置）" (the harness and model names pass through). The header's model
text itself is unchanged. Covered in the chrome tooltip test and the i18n
harvester's exercise.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/web/public/constants.js

@@ -2151,8 +2151,9 @@ const CLI_ID_PATTERN = /^[a-z][a-z0-9-]{0,23}$/;
  * are dropped and the length capped here too, and callers render it with
  * textContent. The tooltip says where a model that is not the CLI's own report
  * came from, so it never claims more than the server knows: one the session
- * was launched with may have been switched since, and a custom endpoint's
+ * was launched with may have been switched since, one read from the CLI's
- * model is the endpoint's, whatever the CLI calls it.
+ * config is what it is configured to run, and a custom endpoint's model is the
+ * endpoint's, whatever the CLI calls it.
  *
  * @param {object} session - a session from app.sessions
  * @param {Array<{id: string, label?: string}>} [catalog] - window.__codemanCliCatalog
@@ -2177,6 +2178,8 @@ function describeSessionHarness(session, catalog) {
       ? ' (set at launch)'
       : source === 'custom-endpoint'
         ? ' (custom endpoint)'
+        : source === 'config'
+          ? ' (from config)'
           : '';
   const title = [label, model].filter(Boolean).join(' \u00B7 ') + qualifier;
   return { id, label, model, title };

src/web/public/i18n.js

@@ -1063,6 +1063,7 @@
       // and model names pass through untranslated.
       [/^(.+) \(set at launch\)$/, (_m, names) => `${names}（启动时设定）`],
       [/^(.+) \(custom endpoint\)$/, (_m, names) => `${names}（自定义端点）`],
+      [/^(.+) \(from config\)$/, (_m, names) => `${names}（来自配置）`],
       // The Run button's mode codes ("Run CC", "Run SH", "Run OC" ...; a registry
       // CLI's shortBadge too). Exact entries win first ("Run Shell", "Run OMP").
       [/^Run ([A-Z][A-Z0-9]{1,5})$/, (_m, code) => `运行 ${code}`],

test/tile-grid-chrome.test.ts

@@ -182,6 +182,10 @@ describe('the harness logo and the model', () => {
     app._renderTileChrome();
     expect(logoOf('s-b').title).toBe('Claude Code \u00B7 haiku (set at launch)');
     expect(logoOf('s-c').title).toBe('Claude Code \u00B7 qwen3.8-27b (custom endpoint)');
+    app.sessions.get('s-a').displayModel = { model: 'qwen3.8-27b', source: 'config' };
+    app._renderTileChrome();
+    expect(logoOf('s-a').title).toBe('DeepSeek \u00B7 qwen3.8-27b (from config)');
+    expect(modelNameOf('s-a').textContent).toBe('qwen3.8-27b');
     expect(modelNameOf('s-b').textContent).toBe('haiku');
   });
 

test/tile-grid-i18n.test.ts

@@ -153,6 +153,10 @@ async function exercise() {
     displayModel: { model: 'qwen3.8-27b', source: 'custom-endpoint' },
   });
   app.sessions.get('s-6').displayModel = { model: 'Haiku 4.5', source: 'statusline' };
+  Object.assign(app.sessions.get('s-4'), {
+    mode: 'deepseek',
+    displayModel: { model: 'qwen3.8-27b', source: 'config' },
+  });
   let pill = 'idle';
   app._sidebarRichRow = () => ({ state: pill, pill, since: { at: 1 } });
   app._mobileOverviewStampText = () => '3m';
@@ -324,6 +328,7 @@ describe('every tile grid string the code puts on screen translates to zh-CN', (
         'DeepSeek \u00B7 qwen3.8-27b',
         'Claude Code \u00B7 haiku (set at launch)',
         'Codex \u00B7 qwen3.8-27b (custom endpoint)',
+        'DeepSeek \u00B7 qwen3.8-27b (from config)',
         'Claude Code \u00B7 Haiku 4.5',
         'Claude Code',
       ])