fix: tighten retry regex patterns and dedupe model dropdown entries (#372)

Add word boundary anchors to HTTP status code patterns in API_RETRY_PATTERNS
to prevent false matches on strings like "port 5000" or "1500 lines".

Filter recent models out of the "All Models" section in the model dropdown
to eliminate duplicate entries and dead keyboard navigation positions.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: alari76

server/session-manager.ts

@@ -63,10 +63,10 @@ const API_RETRY_PATTERNS = [
   /internal server error/i,
   /overloaded/i,
   /rate.?limit/i,
-  /529/,
-  /500/,
-  /502/,
-  /503/,
+  /\b529\b/,
+  /\b500\b/,
+  /\b502\b/,
+  /\b503\b/,
 ]
 
 /** Sources that represent headless (non-interactive) sessions managed by their own lifecycles. */

src/components/InputBar.tsx

@@ -169,8 +169,12 @@ function ModelDropdown({ currentModel, models, isOpen, menuRef, onToggle, onChan
       )
     : models
 
+  const recentSet = new Set(recents)
+  const allModelsFiltered = (!query && recents.length > 0)
+    ? filtered.filter(m => !recentSet.has(m.id))
+    : filtered
   const visibleList = (!query && recents.length > 0
-    ? [...recents.map(id => models.find(m => m.id === id)).filter(Boolean) as ModelOption[], ...filtered]
+    ? [...recents.map(id => models.find(m => m.id === id)).filter(Boolean) as ModelOption[], ...allModelsFiltered]
     : filtered)
 
   useEffect(() => {
@@ -242,7 +246,7 @@ function ModelDropdown({ currentModel, models, isOpen, menuRef, onToggle, onChan
               {!query && (
                 <div className="px-3 py-1 text-[11px] text-neutral-5">All Models</div>
               )}
-              {filtered.map((m, idx) => {
+              {allModelsFiltered.map((m, idx) => {
                 const baseIndex = (!query && recents.length > 0) ? recents.length : 0
                 const index = baseIndex + idx
                 return (