refactor: apply minimal tfcode branding

- Rename packages/opencode → packages/tfcode (directory only)
- Rename bin/opencode → bin/tfcode (CLI binary)
- Rename .opencode → .tfcode (config directory)
- Update package.json name and bin field
- Update config directory path references (.tfcode)
- Keep internal code references as 'opencode' for easy upstream sync
- Keep @opencode-ai/* workspace package names

This minimal branding approach allows clean merges from upstream
opencode repository while providing tfcode branding for users.

packages/tfcode/test/control-plane/session-proxy-middleware.test.ts

@@ -0,0 +1,159 @@
+import { afterEach, describe, expect, mock, test } from "bun:test"
+import { WorkspaceID } from "../../src/control-plane/schema"
+import { Hono } from "hono"
+import { tmpdir } from "../fixture/fixture"
+import { Project } from "../../src/project/project"
+import { WorkspaceTable } from "../../src/control-plane/workspace.sql"
+import { Instance } from "../../src/project/instance"
+import { WorkspaceContext } from "../../src/control-plane/workspace-context"
+import { Database } from "../../src/storage/db"
+import { resetDatabase } from "../fixture/db"
+import * as adaptors from "../../src/control-plane/adaptors"
+import type { Adaptor } from "../../src/control-plane/types"
+import { Flag } from "../../src/flag/flag"
+
+afterEach(async () => {
+  mock.restore()
+  await resetDatabase()
+})
+
+const original = Flag.OPENCODE_EXPERIMENTAL_WORKSPACES
+// @ts-expect-error don't do this normally, but it works
+Flag.OPENCODE_EXPERIMENTAL_WORKSPACES = true
+
+afterEach(() => {
+  // @ts-expect-error don't do this normally, but it works
+  Flag.OPENCODE_EXPERIMENTAL_WORKSPACES = original
+})
+
+type State = {
+  workspace?: "first" | "second"
+  calls: Array<{ method: string; url: string; body?: string }>
+}
+
+const remote = { type: "testing", name: "remote-a" } as unknown as typeof WorkspaceTable.$inferInsert
+
+async function setup(state: State) {
+  const TestAdaptor: Adaptor = {
+    configure(config) {
+      return config
+    },
+    async create() {
+      throw new Error("not used")
+    },
+    async remove() {},
+
+    async fetch(_config: unknown, input: RequestInfo | URL, init?: RequestInit) {
+      const url =
+        input instanceof Request || input instanceof URL
+          ? input.toString()
+          : new URL(input, "http://workspace.test").toString()
+      const request = new Request(url, init)
+      const body = request.method === "GET" || request.method === "HEAD" ? undefined : await request.text()
+      state.calls.push({
+        method: request.method,
+        url: `${new URL(request.url).pathname}${new URL(request.url).search}`,
+        body,
+      })
+      return new Response("proxied", { status: 202 })
+    },
+  }
+
+  adaptors.installAdaptor("testing", TestAdaptor)
+
+  await using tmp = await tmpdir({ git: true })
+  const { project } = await Project.fromDirectory(tmp.path)
+
+  const id1 = WorkspaceID.ascending()
+  const id2 = WorkspaceID.ascending()
+
+  Database.use((db) =>
+    db
+      .insert(WorkspaceTable)
+      .values([
+        {
+          id: id1,
+          branch: "main",
+          project_id: project.id,
+          type: remote.type,
+          name: remote.name,
+        },
+        {
+          id: id2,
+          branch: "main",
+          project_id: project.id,
+          type: "worktree",
+          directory: tmp.path,
+          name: "local",
+        },
+      ])
+      .run(),
+  )
+
+  const { WorkspaceRouterMiddleware } = await import("../../src/control-plane/workspace-router-middleware")
+  const app = new Hono().use(WorkspaceRouterMiddleware)
+
+  return {
+    id1,
+    id2,
+    app,
+    async request(input: RequestInfo | URL, init?: RequestInit) {
+      return Instance.provide({
+        directory: tmp.path,
+        fn: async () =>
+          WorkspaceContext.provide({
+            workspaceID: state.workspace === "first" ? id1 : id2,
+            fn: () => app.request(input, init),
+          }),
+      })
+    },
+  }
+}
+
+describe("control-plane/session-proxy-middleware", () => {
+  test("forwards non-GET session requests for workspaces", async () => {
+    const state: State = {
+      workspace: "first",
+      calls: [],
+    }
+
+    const ctx = await setup(state)
+
+    ctx.app.post("/session/foo", (c) => c.text("local", 200))
+    const response = await ctx.request("http://workspace.test/session/foo?x=1", {
+      method: "POST",
+      body: JSON.stringify({ hello: "world" }),
+      headers: {
+        "content-type": "application/json",
+      },
+    })
+
+    expect(response.status).toBe(202)
+    expect(await response.text()).toBe("proxied")
+    expect(state.calls).toEqual([
+      {
+        method: "POST",
+        url: "/session/foo?x=1",
+        body: '{"hello":"world"}',
+      },
+    ])
+  })
+
+  // It will behave this way when we have syncing
+  //
+  // test("does not forward GET requests", async () => {
+  //   const state: State = {
+  //     workspace: "first",
+  //     calls: [],
+  //   }
+
+  //   const ctx = await setup(state)
+
+  //   ctx.app.get("/session/foo", (c) => c.text("local", 200))
+  //   const response = await ctx.request("http://workspace.test/session/foo?x=1")
+
+  //   expect(response.status).toBe(200)
+  //   expect(await response.text()).toBe("local")
+  //   expect(state.calls).toEqual([])
+  // })
+})

packages/tfcode/test/control-plane/sse.test.ts

@@ -0,0 +1,56 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import { parseSSE } from "../../src/control-plane/sse"
+import { resetDatabase } from "../fixture/db"
+
+afterEach(async () => {
+  await resetDatabase()
+})
+
+function stream(chunks: string[]) {
+  return new ReadableStream<Uint8Array>({
+    start(controller) {
+      const encoder = new TextEncoder()
+      chunks.forEach((chunk) => controller.enqueue(encoder.encode(chunk)))
+      controller.close()
+    },
+  })
+}
+
+describe("control-plane/sse", () => {
+  test("parses JSON events with CRLF and multiline data blocks", async () => {
+    const events: unknown[] = []
+    const stop = new AbortController()
+
+    await parseSSE(
+      stream([
+        'data: {"type":"one","properties":{"ok":true}}\r\n\r\n',
+        'data: {"type":"two",\r\ndata: "properties":{"n":2}}\r\n\r\n',
+      ]),
+      stop.signal,
+      (event) => events.push(event),
+    )
+
+    expect(events).toEqual([
+      { type: "one", properties: { ok: true } },
+      { type: "two", properties: { n: 2 } },
+    ])
+  })
+
+  test("falls back to sse.message for non-json payload", async () => {
+    const events: unknown[] = []
+    const stop = new AbortController()
+
+    await parseSSE(stream(["id: abc\nretry: 1500\ndata: hello world\n\n"]), stop.signal, (event) => events.push(event))
+
+    expect(events).toEqual([
+      {
+        type: "sse.message",
+        properties: {
+          data: "hello world",
+          id: "abc",
+          retry: 1500,
+        },
+      },
+    ])
+  })
+})

packages/tfcode/test/control-plane/workspace-server-sse.test.ts

@@ -0,0 +1,70 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import { Log } from "../../src/util/log"
+import { WorkspaceServer } from "../../src/control-plane/workspace-server/server"
+import { parseSSE } from "../../src/control-plane/sse"
+import { GlobalBus } from "../../src/bus/global"
+import { resetDatabase } from "../fixture/db"
+import { tmpdir } from "../fixture/fixture"
+
+afterEach(async () => {
+  await resetDatabase()
+})
+
+Log.init({ print: false })
+
+describe("control-plane/workspace-server SSE", () => {
+  test("streams GlobalBus events and parseSSE reads them", async () => {
+    await using tmp = await tmpdir({ git: true })
+    const app = WorkspaceServer.App()
+    const stop = new AbortController()
+    const seen: unknown[] = []
+    try {
+      const response = await app.request("/event", {
+        signal: stop.signal,
+        headers: {
+          "x-opencode-workspace": "wrk_test_workspace",
+          "x-opencode-directory": tmp.path,
+        },
+      })
+
+      expect(response.status).toBe(200)
+      expect(response.body).toBeDefined()
+
+      const done = new Promise<void>((resolve, reject) => {
+        const timeout = setTimeout(() => {
+          reject(new Error("timed out waiting for workspace.test event"))
+        }, 3000)
+
+        void parseSSE(response.body!, stop.signal, (event) => {
+          seen.push(event)
+          const next = event as { type?: string }
+          if (next.type === "server.connected") {
+            GlobalBus.emit("event", {
+              payload: {
+                type: "workspace.test",
+                properties: { ok: true },
+              },
+            })
+            return
+          }
+          if (next.type !== "workspace.test") return
+          clearTimeout(timeout)
+          resolve()
+        }).catch((error) => {
+          clearTimeout(timeout)
+          reject(error)
+        })
+      })
+
+      await done
+
+      expect(seen.some((event) => (event as { type?: string }).type === "server.connected")).toBe(true)
+      expect(seen).toContainEqual({
+        type: "workspace.test",
+        properties: { ok: true },
+      })
+    } finally {
+      stop.abort()
+    }
+  })
+})

packages/tfcode/test/control-plane/workspace-sync.test.ts

@@ -0,0 +1,99 @@
+import { afterEach, describe, expect, mock, test } from "bun:test"
+import { WorkspaceID } from "../../src/control-plane/schema"
+import { Log } from "../../src/util/log"
+import { tmpdir } from "../fixture/fixture"
+import { Project } from "../../src/project/project"
+import { Database } from "../../src/storage/db"
+import { WorkspaceTable } from "../../src/control-plane/workspace.sql"
+import { GlobalBus } from "../../src/bus/global"
+import { resetDatabase } from "../fixture/db"
+import * as adaptors from "../../src/control-plane/adaptors"
+import type { Adaptor } from "../../src/control-plane/types"
+
+afterEach(async () => {
+  mock.restore()
+  await resetDatabase()
+})
+
+Log.init({ print: false })
+
+const remote = { type: "testing", name: "remote-a" } as unknown as typeof WorkspaceTable.$inferInsert
+
+const TestAdaptor: Adaptor = {
+  configure(config) {
+    return config
+  },
+  async create() {
+    throw new Error("not used")
+  },
+  async remove() {},
+  async fetch(_config: unknown, _input: RequestInfo | URL, _init?: RequestInit) {
+    const body = new ReadableStream<Uint8Array>({
+      start(controller) {
+        const encoder = new TextEncoder()
+        controller.enqueue(encoder.encode('data: {"type":"remote.ready","properties":{}}\n\n'))
+        controller.close()
+      },
+    })
+    return new Response(body, {
+      status: 200,
+      headers: {
+        "content-type": "text/event-stream",
+      },
+    })
+  },
+}
+
+adaptors.installAdaptor("testing", TestAdaptor)
+
+describe("control-plane/workspace.startSyncing", () => {
+  test("syncs only remote workspaces and emits remote SSE events", async () => {
+    const { Workspace } = await import("../../src/control-plane/workspace")
+    await using tmp = await tmpdir({ git: true })
+    const { project } = await Project.fromDirectory(tmp.path)
+
+    const id1 = WorkspaceID.ascending()
+    const id2 = WorkspaceID.ascending()
+
+    Database.use((db) =>
+      db
+        .insert(WorkspaceTable)
+        .values([
+          {
+            id: id1,
+            branch: "main",
+            project_id: project.id,
+            type: remote.type,
+            name: remote.name,
+          },
+          {
+            id: id2,
+            branch: "main",
+            project_id: project.id,
+            type: "worktree",
+            directory: tmp.path,
+            name: "local",
+          },
+        ])
+        .run(),
+    )
+
+    const done = new Promise<void>((resolve) => {
+      const listener = (event: { directory?: string; payload: { type: string } }) => {
+        if (event.directory !== id1) return
+        if (event.payload.type !== "remote.ready") return
+        GlobalBus.off("event", listener)
+        resolve()
+      }
+      GlobalBus.on("event", listener)
+    })
+
+    const sync = Workspace.startSyncing(project)
+    await Promise.race([
+      done,
+      new Promise((_, reject) => setTimeout(() => reject(new Error("timed out waiting for sync event")), 2000)),
+    ])
+
+    await sync.stop()
+  })
+})