feat(desktop): align provider onboarding dialogs (#36733)

Co-authored-by: Brendan Allan <git@brendonovich.dev>

packages/app/src/i18n/en.ts

@@ -102,6 +102,7 @@ export const dict = {
   "dialog.provider.empty": "No providers found",
   "dialog.provider.group.popular": "Popular",
   "dialog.provider.group.other": "Other",
+  "dialog.provider.custom.label": "Custom OpenAI-compatible provider",
   "dialog.provider.tag.recommended": "Recommended",
   "dialog.provider.opencode.note": "Curated models including Claude, GPT, Gemini and more",
   "dialog.provider.opencode.tagline": "Reliable optimized models",
@@ -122,6 +123,7 @@ export const dict = {
 
   "dialog.model.unpaid.freeModels.title": "Free models provided by OpenCode",
   "dialog.model.unpaid.addMore.title": "Add more models from popular providers",
+  "dialog.model.unpaid.viewMoreProviders": "See 70+ more providers",
 
   "dialog.provider.viewAll": "Show more providers",