chore: merge dev into v2 (#35591)

Co-authored-by: Frank <frank@anoma.ly>
Co-authored-by: Aarav Sareen <96787824+arvsrn@users.noreply.github.com>
Co-authored-by: Brendan Allan <git@brendonovich.dev>
Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>
Co-authored-by: Jack <jack@anoma.ly>
Co-authored-by: Brendan Allan <14191578+Brendonovich@users.noreply.github.com>
Co-authored-by: Shoubhit Dash <shoubhit2005@gmail.com>
Co-authored-by: opencode-agent[bot] <219766164+opencode-agent[bot]@users.noreply.github.com>
Co-authored-by: James Long <longster@gmail.com>
Co-authored-by: Dustin Deus <deusdustin@gmail.com>
Co-authored-by: starptech <starptech@starptechs-MBP.fritz.box>
Co-authored-by: Luke Parker <10430890+Hona@users.noreply.github.com>
Co-authored-by: 𝓛𝓲𝓽𝓽𝓵𝓮 𝓕𝓻𝓪𝓷𝓴 <little-frank@opencord.local>
Co-authored-by: Dax <mail@thdxr.com>
Co-authored-by: usrnk1 <7547651+usrnk1@users.noreply.github.com>
Co-authored-by: Jay <53023+jayair@users.noreply.github.com>
Co-authored-by: runvip <164729189+runvip@users.noreply.github.com>
Co-authored-by: opencode <opencode@sst.dev>
Co-authored-by: Julian Coy <julian@ex-machina.co>
Co-authored-by: Vladimir Glafirov <vglafirov@gitlab.com>
Co-authored-by: Adam <2363879+adamdotdevin@users.noreply.github.com>
Co-authored-by: Kit Langton <kit.langton@gmail.com>
Co-authored-by: Simon Klee <hello@simonklee.dk>
Co-authored-by: Jay <air@live.ca>
Co-authored-by: David Hill <1879069+iamdavidhill@users.noreply.github.com>

packages/opencode/test/plugin/github-copilot-models.test.ts

@@ -187,6 +187,44 @@ test("converts Copilot AIC token prices to USD per million tokens", async () =>
   expect(models["ignored-non-chat-record"]).toBeUndefined()
 })
 
+test("records Copilot advertised responses endpoint for non-GPT model IDs", async () => {
+  globalThis.fetch = mock(() =>
+    Promise.resolve(
+      new Response(
+        JSON.stringify({
+          data: [
+            {
+              model_picker_enabled: true,
+              id: "mai-code-1-flash-picker",
+              name: "MAI-Code-1-Flash",
+              version: "mai-code-1-flash-picker",
+              supported_endpoints: ["/responses"],
+              capabilities: {
+                family: "oswe-vscode-modelD",
+                limits: {
+                  max_context_window_tokens: 256000,
+                  max_output_tokens: 128000,
+                  max_prompt_tokens: 128000,
+                },
+                supports: {
+                  streaming: true,
+                  structured_outputs: true,
+                  tool_calls: true,
+                },
+              },
+            },
+          ],
+        }),
+        { status: 200 },
+      ),
+    ),
+  ) as unknown as typeof fetch
+
+  const model = (await CopilotModels.get("https://api.githubcopilot.com")).models["mai-code-1-flash-picker"]
+
+  expect("endpoint" in model.api ? model.api.endpoint : undefined).toBe("responses")
+})
+
 test("clears existing variants so refreshed models calculate provider-specific variants", async () => {
   globalThis.fetch = mock(() =>
     Promise.resolve(