cli: add variant selection panel to command menu

Previously model variants (reasoning effort) could only be cycled
with a keybind. Add a searchable selection panel accessible from the
command palette, matching the existing model selection flow. The
footer hint bar now advertises the command palette keybind instead
of the variant cycle shortcut.

packages/opencode/test/cli/run/footer.view.test.tsx

@@ -2,7 +2,7 @@
 import { expect, test } from "bun:test"
 import { testRender } from "@opentui/solid"
 import { createSignal } from "solid-js"
-import { RUN_COMMAND_PANEL_ROWS, RunCommandMenuBody, RunModelSelectBody } from "@/cli/cmd/run/footer.command"
+import { RUN_COMMAND_PANEL_ROWS, RunCommandMenuBody, RunModelSelectBody, RunVariantSelectBody } from "@/cli/cmd/run/footer.command"
 import { RunEntryContent } from "@/cli/cmd/run/scrollback.writer"
 import { RUN_THEME_FALLBACK } from "@/cli/cmd/run/theme"
 import type { RunCommand, RunInput, RunProvider, StreamCommit } from "@/cli/cmd/run/types"
@@ -17,7 +17,13 @@ function command(input: { name: string; description: string; source?: "command"
   } satisfies RunCommand
 }
 
-function model(input: { id: string; name: string; status?: "active" | "deprecated"; cost?: number }) {
+function model(input: {
+  id: string
+  name: string
+  status?: "active" | "deprecated"
+  cost?: number
+  variants?: Record<string, Record<string, never>>
+}) {
   return {
     id: input.id,
     providerID: "opencode",
@@ -64,6 +70,7 @@ function model(input: { id: string; name: string; status?: "active" | "deprecate
     options: {},
     headers: {},
     release_date: "2026-01-01",
+    variants: input.variants,
   } satisfies RunProvider["models"][string]
 }
 
@@ -75,7 +82,7 @@ function provider() {
     env: [],
     options: {},
     models: {
-      "gpt-5": model({ id: "gpt-5", name: "GPT-5" }),
+      "gpt-5": model({ id: "gpt-5", name: "GPT-5", variants: { high: {}, minimal: {} } }),
       "gpt-free": model({ id: "gpt-free", name: "GPT Free", cost: 0 }),
       old: model({ id: "old", name: "Old Model", status: "deprecated" }),
     },
@@ -129,14 +136,18 @@ test("direct command panel renders grouped command palette", async () => {
     command({ name: "deploy", description: "Deploy prompt", source: "mcp" }),
     command({ name: "internal", description: "Skill command", source: "skill" }),
   ])
+  const [variants] = createSignal(["high", "minimal"])
 
   const app = await testRender(() => (
     <box width={100} height={RUN_COMMAND_PANEL_ROWS}>
       <RunCommandMenuBody
         theme={() => RUN_THEME_FALLBACK.footer}
         commands={commands}
+        variants={variants}
         onClose={() => {}}
         onModel={() => {}}
+        onVariant={() => {}}
+        onVariantCycle={() => {}}
         onSlash={() => {}}
         onExit={() => {}}
       />
@@ -154,6 +165,8 @@ test("direct command panel renders grouped command palette", async () => {
     expect(frame).toContain("Search")
     expect(frame).toContain("Suggested")
     expect(frame).toContain("Switch model")
+    expect(frame).toContain("Variant cycle")
+    expect(frame).toContain("Switch model variant")
     expect(frame).toContain("Session")
     expect(frame).toContain("/new")
     expect(frame).toContain("Project Commands")
@@ -199,3 +212,36 @@ test("direct model panel renders current model selector", async () => {
     app.renderer.destroy()
   }
 })
+
+test("direct variant panel renders current variant selector", async () => {
+  const [variants] = createSignal(["high", "minimal"])
+  const [current] = createSignal<string | undefined>("high")
+
+  const app = await testRender(() => (
+    <box width={100} height={RUN_COMMAND_PANEL_ROWS}>
+      <RunVariantSelectBody
+        theme={() => RUN_THEME_FALLBACK.footer}
+        variants={variants}
+        current={current}
+        onClose={() => {}}
+        onSelect={() => {}}
+      />
+    </box>
+  ), {
+    width: 100,
+    height: RUN_COMMAND_PANEL_ROWS,
+  })
+
+  try {
+    await app.renderOnce()
+    const frame = app.captureCharFrame()
+
+    expect(frame).toContain("Select variant")
+    expect(frame).toContain("Default")
+    expect(frame).toContain("high")
+    expect(frame).toContain("minimal")
+    expect(frame).toContain("current")
+  } finally {
+    app.renderer.destroy()
+  }
+})

packages/opencode/test/cli/run/runtime.boot.test.ts

@@ -208,14 +208,7 @@ describe("run runtime boot", () => {
       default: {},
       connected: [],
     }
-    spyOn(sdk.config, "providers").mockImplementation(() =>
-      Promise.resolve({
-        data: undefined,
-        error: undefined,
-        request: new Request("https://opencode.test"),
-        response: new Response(),
-      }),
-    )
+    spyOn(sdk.config, "providers").mockRejectedValue(new Error("boom"))
     spyOn(sdk.provider, "list").mockImplementation(() =>
       Promise.resolve({
         data,