Merge PR #62: Full OpenCode adapter integration

Merges paperclipai/paperclip#62 onto latest master (494448d).
Adds complete OpenCode provider with strict model selection,
dynamic model discovery, CLI/server/UI adapter registration.

Resolved conflicts with master's cursor adapter additions,
node v24 typing, and containerized opencode support (201d91b).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/__tests__/adapter-models.test.ts

@@ -1,6 +1,7 @@
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import { models as codexFallbackModels } from "@paperclipai/adapter-codex-local";
 import { models as cursorFallbackModels } from "@paperclipai/adapter-cursor-local";
+import { resetOpenCodeModelsCacheForTests } from "@paperclipai/adapter-opencode-local/server";
 import { listAdapterModels } from "../adapters/index.js";
 import { resetCodexModelsCacheForTests } from "../adapters/codex-models.js";
 import { resetCursorModelsCacheForTests, setCursorModelsRunnerForTests } from "../adapters/cursor-models.js";
@@ -8,9 +9,11 @@ import { resetCursorModelsCacheForTests, setCursorModelsRunnerForTests } from ".
 describe("adapter model listing", () => {
   beforeEach(() => {
     delete process.env.OPENAI_API_KEY;
+    delete process.env.PAPERCLIP_OPENCODE_COMMAND;
     resetCodexModelsCacheForTests();
     resetCursorModelsCacheForTests();
     setCursorModelsRunnerForTests(null);
+    resetOpenCodeModelsCacheForTests();
     vi.restoreAllMocks();
   });
 
@@ -60,6 +63,7 @@ describe("adapter model listing", () => {
     expect(models).toEqual(codexFallbackModels);
   });
 
+
   it("returns cursor fallback models when CLI discovery is unavailable", async () => {
     setCursorModelsRunnerForTests(() => ({
       status: null,
@@ -90,4 +94,11 @@ describe("adapter model listing", () => {
     expect(first.some((model) => model.id === "gpt-5.3-codex-high")).toBe(true);
     expect(first.some((model) => model.id === "composer-1")).toBe(true);
   });
+
+  it("returns no opencode models when opencode command is unavailable", async () => {
+    process.env.PAPERCLIP_OPENCODE_COMMAND = "__paperclip_missing_opencode_command__";
+
+    const models = await listAdapterModels("opencode_local");
+    expect(models).toEqual([]);
+  });
 });