diff --git a/bun.lock b/bun.lock
index 325eeb15f5..2638e6b722 100644
--- a/bun.lock
+++ b/bun.lock
@@ -26,7 +26,7 @@
     },
     "packages/app": {
       "name": "@opencode-ai/app",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/sdk": "workspace:*",
@@ -76,7 +76,7 @@
     },
     "packages/console/app": {
       "name": "@opencode-ai/console-app",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@cloudflare/vite-plugin": "1.15.2",
         "@ibm/plex": "6.4.1",
@@ -110,7 +110,7 @@
     },
     "packages/console/core": {
       "name": "@opencode-ai/console-core",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@aws-sdk/client-sts": "3.782.0",
         "@jsx-email/render": "1.1.1",
@@ -137,7 +137,7 @@
     },
     "packages/console/function": {
       "name": "@opencode-ai/console-function",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@ai-sdk/anthropic": "2.0.0",
         "@ai-sdk/openai": "2.0.2",
@@ -161,7 +161,7 @@
     },
     "packages/console/mail": {
       "name": "@opencode-ai/console-mail",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@jsx-email/all": "2.2.3",
         "@jsx-email/cli": "1.4.3",
@@ -185,7 +185,7 @@
     },
     "packages/desktop": {
       "name": "@opencode-ai/desktop",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@opencode-ai/app": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -218,7 +218,7 @@
     },
     "packages/desktop-electron": {
       "name": "@opencode-ai/desktop-electron",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@opencode-ai/app": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -248,7 +248,7 @@
     },
     "packages/enterprise": {
       "name": "@opencode-ai/enterprise",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@opencode-ai/ui": "workspace:*",
         "@opencode-ai/util": "workspace:*",
@@ -277,7 +277,7 @@
     },
     "packages/function": {
       "name": "@opencode-ai/function",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@octokit/auth-app": "8.0.1",
         "@octokit/rest": "catalog:",
@@ -293,7 +293,7 @@
     },
     "packages/opencode": {
       "name": "opencode",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "bin": {
         "opencode": "./bin/opencode",
       },
@@ -407,7 +407,7 @@
     },
     "packages/plugin": {
       "name": "@opencode-ai/plugin",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "zod": "catalog:",
@@ -427,7 +427,7 @@
     },
     "packages/sdk/js": {
       "name": "@opencode-ai/sdk",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "devDependencies": {
         "@hey-api/openapi-ts": "0.90.10",
         "@tsconfig/node22": "catalog:",
@@ -438,7 +438,7 @@
     },
     "packages/slack": {
       "name": "@opencode-ai/slack",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "@slack/bolt": "^3.17.1",
@@ -473,7 +473,7 @@
     },
     "packages/ui": {
       "name": "@opencode-ai/ui",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/sdk": "workspace:*",
@@ -519,7 +519,7 @@
     },
     "packages/util": {
       "name": "@opencode-ai/util",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "zod": "catalog:",
       },
@@ -530,7 +530,7 @@
     },
     "packages/web": {
       "name": "@opencode-ai/web",
-      "version": "1.2.18",
+      "version": "1.2.19",
       "dependencies": {
         "@astrojs/cloudflare": "12.6.3",
         "@astrojs/markdown-remark": "6.3.1",
diff --git a/github/index.ts b/github/index.ts
index da310178a7..1a0a992622 100644
--- a/github/index.ts
+++ b/github/index.ts
@@ -8,6 +8,7 @@ import type { Context as GitHubContext } from "@actions/github/lib/context"
 import type { IssueCommentEvent, PullRequestReviewCommentEvent } from "@octokit/webhooks-types"
 import { createOpencodeClient } from "@opencode-ai/sdk"
 import { spawn } from "node:child_process"
+import { setTimeout as sleep } from "node:timers/promises"
 
 type GitHubAuthor = {
   login: string
@@ -281,7 +282,7 @@ async function assertOpencodeConnected() {
       connected = true
       break
     } catch (e) {}
-    await Bun.sleep(300)
+    await sleep(300)
   } while (retry++ < 30)
 
   if (!connected) {
diff --git a/packages/app/package.json b/packages/app/package.json
index 37ccd9b53a..809a285374 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/app",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "description": "",
   "type": "module",
   "exports": {
diff --git a/packages/console/app/package.json b/packages/console/app/package.json
index 67a7eafa7c..269b005a86 100644
--- a/packages/console/app/package.json
+++ b/packages/console/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-app",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/console/core/package.json b/packages/console/core/package.json
index 37c94aecbb..199b5d9bd6 100644
--- a/packages/console/core/package.json
+++ b/packages/console/core/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/console-core",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/console/function/package.json b/packages/console/function/package.json
index bb7caccc58..e771aae844 100644
--- a/packages/console/function/package.json
+++ b/packages/console/function/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-function",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",
diff --git a/packages/console/mail/package.json b/packages/console/mail/package.json
index 00e7378fe5..ef8d7c5994 100644
--- a/packages/console/mail/package.json
+++ b/packages/console/mail/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-mail",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "dependencies": {
     "@jsx-email/all": "2.2.3",
     "@jsx-email/cli": "1.4.3",
diff --git a/packages/desktop-electron/package.json b/packages/desktop-electron/package.json
index 41791066ea..e683d185bc 100644
--- a/packages/desktop-electron/package.json
+++ b/packages/desktop-electron/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop-electron",
   "private": true,
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "homepage": "https://opencode.ai",
diff --git a/packages/desktop/package.json b/packages/desktop/package.json
index 49699ff85e..10e6df26b1 100644
--- a/packages/desktop/package.json
+++ b/packages/desktop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop",
   "private": true,
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/enterprise/package.json b/packages/enterprise/package.json
index 065015bc50..ef56add880 100644
--- a/packages/enterprise/package.json
+++ b/packages/enterprise/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/enterprise",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/extensions/zed/extension.toml b/packages/extensions/zed/extension.toml
index efd12836ee..1637c58a4d 100644
--- a/packages/extensions/zed/extension.toml
+++ b/packages/extensions/zed/extension.toml
@@ -1,7 +1,7 @@
 id = "opencode"
 name = "OpenCode"
 description = "The open source coding agent."
-version = "1.2.18"
+version = "1.2.19"
 schema_version = 1
 authors = ["Anomaly"]
 repository = "https://github.com/anomalyco/opencode"
@@ -11,26 +11,26 @@ name = "OpenCode"
 icon = "./icons/opencode.svg"
 
 [agent_servers.opencode.targets.darwin-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.18/opencode-darwin-arm64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.19/opencode-darwin-arm64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.darwin-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.18/opencode-darwin-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.19/opencode-darwin-x64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.18/opencode-linux-arm64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.19/opencode-linux-arm64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.18/opencode-linux-x64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.19/opencode-linux-x64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.windows-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.18/opencode-windows-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.2.19/opencode-windows-x64.zip"
 cmd = "./opencode.exe"
 args = ["acp"]
diff --git a/packages/function/package.json b/packages/function/package.json
index 162b564ad9..efaae65f53 100644
--- a/packages/function/package.json
+++ b/packages/function/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/function",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",
diff --git a/packages/opencode/package.json b/packages/opencode/package.json
index 5edfca7e19..30af3c347c 100644
--- a/packages/opencode/package.json
+++ b/packages/opencode/package.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "name": "opencode",
   "type": "module",
   "license": "MIT",
diff --git a/packages/opencode/src/acp/agent.ts b/packages/opencode/src/acp/agent.ts
index 8b338f1b57..d518dd12a1 100644
--- a/packages/opencode/src/acp/agent.ts
+++ b/packages/opencode/src/acp/agent.ts
@@ -31,6 +31,7 @@ import {
 import { Log } from "../util/log"
 import { pathToFileURL } from "bun"
 import { Filesystem } from "../util/filesystem"
+import { Hash } from "../util/hash"
 import { ACPSessionManager } from "./session"
 import type { ACPConfig } from "./types"
 import { Provider } from "../provider/provider"
@@ -281,7 +282,7 @@ export namespace ACP {
                 const output = this.bashOutput(part)
                 const content: ToolCallContent[] = []
                 if (output) {
-                  const hash = String(Bun.hash(output))
+                  const hash = Hash.fast(output)
                   if (part.tool === "bash") {
                     if (this.bashSnapshots.get(part.callID) === hash) {
                       await this.connection
diff --git a/packages/opencode/src/cli/cmd/auth.ts b/packages/opencode/src/cli/cmd/auth.ts
index a7300e0293..38fba0ce70 100644
--- a/packages/opencode/src/cli/cmd/auth.ts
+++ b/packages/opencode/src/cli/cmd/auth.ts
@@ -13,6 +13,7 @@ import { Instance } from "../../project/instance"
 import type { Hooks } from "@opencode-ai/plugin"
 import { Process } from "../../util/process"
 import { text } from "node:stream/consumers"
+import { setTimeout as sleep } from "node:timers/promises"
 
 type PluginAuth = NonNullable<Hooks["auth"]>
 
@@ -47,7 +48,7 @@ async function handlePluginAuth(plugin: { auth: PluginAuth }, provider: string,
   const method = plugin.auth.methods[index]
 
   // Handle prompts for all auth types
-  await Bun.sleep(10)
+  await sleep(10)
   const inputs: Record<string, string> = {}
   if (method.prompts) {
     for (const prompt of method.prompts) {
diff --git a/packages/opencode/src/cli/cmd/debug/lsp.ts b/packages/opencode/src/cli/cmd/debug/lsp.ts
index d83c4ed8a4..4b8a3e7d45 100644
--- a/packages/opencode/src/cli/cmd/debug/lsp.ts
+++ b/packages/opencode/src/cli/cmd/debug/lsp.ts
@@ -3,6 +3,7 @@ import { bootstrap } from "../../bootstrap"
 import { cmd } from "../cmd"
 import { Log } from "../../../util/log"
 import { EOL } from "os"
+import { setTimeout as sleep } from "node:timers/promises"
 
 export const LSPCommand = cmd({
   command: "lsp",
@@ -19,7 +20,7 @@ const DiagnosticsCommand = cmd({
   async handler(args) {
     await bootstrap(process.cwd(), async () => {
       await LSP.touchFile(args.file, true)
-      await Bun.sleep(1000)
+      await sleep(1000)
       process.stdout.write(JSON.stringify(await LSP.diagnostics(), null, 2) + EOL)
     })
   },
diff --git a/packages/opencode/src/cli/cmd/github.ts b/packages/opencode/src/cli/cmd/github.ts
index 672e73d49a..2491abc567 100644
--- a/packages/opencode/src/cli/cmd/github.ts
+++ b/packages/opencode/src/cli/cmd/github.ts
@@ -28,6 +28,7 @@ import { Bus } from "../../bus"
 import { MessageV2 } from "../../session/message-v2"
 import { SessionPrompt } from "@/session/prompt"
 import { $ } from "bun"
+import { setTimeout as sleep } from "node:timers/promises"
 
 type GitHubAuthor = {
   login: string
@@ -353,7 +354,7 @@ export const GithubInstallCommand = cmd({
               }
 
               retries++
-              await Bun.sleep(1000)
+              await sleep(1000)
             } while (true)
 
             s.stop("Installed GitHub app")
@@ -1372,7 +1373,7 @@ Co-authored-by: ${actor} <${actor}@users.noreply.github.com>"`
         } catch (e) {
           if (retries > 0) {
             console.log(`Retrying after ${delayMs}ms...`)
-            await Bun.sleep(delayMs)
+            await sleep(delayMs)
             return withRetry(fn, retries - 1, delayMs)
           }
           throw e
diff --git a/packages/opencode/src/cli/cmd/run.ts b/packages/opencode/src/cli/cmd/run.ts
index 61bc609bb7..d74eb2aa4c 100644
--- a/packages/opencode/src/cli/cmd/run.ts
+++ b/packages/opencode/src/cli/cmd/run.ts
@@ -6,6 +6,7 @@ import { cmd } from "./cmd"
 import { Flag } from "../../flag/flag"
 import { bootstrap } from "../bootstrap"
 import { EOL } from "os"
+import { text as streamText } from "node:stream/consumers"
 import { Filesystem } from "../../util/filesystem"
 import { createOpencodeClient, type Message, type OpencodeClient, type ToolPart } from "@opencode-ai/sdk/v2"
 import { Server } from "../../server/server"
@@ -337,7 +338,7 @@ export const RunCommand = cmd({
       }
     }
 
-    if (!process.stdin.isTTY) message += "\n" + (await Bun.stdin.text())
+    if (!process.stdin.isTTY) message += "\n" + (await streamText(process.stdin))
 
     if (message.trim().length === 0 && !args.command) {
       UI.error("You must provide a message or a command")
diff --git a/packages/opencode/src/cli/cmd/tui/thread.ts b/packages/opencode/src/cli/cmd/tui/thread.ts
index f53cc39255..57acfd199e 100644
--- a/packages/opencode/src/cli/cmd/tui/thread.ts
+++ b/packages/opencode/src/cli/cmd/tui/thread.ts
@@ -3,6 +3,7 @@ import { tui } from "./app"
 import { Rpc } from "@/util/rpc"
 import { type rpc } from "./worker"
 import path from "path"
+import { text as streamText } from "node:stream/consumers"
 import { fileURLToPath } from "url"
 import { UI } from "@/cli/ui"
 import { Log } from "@/util/log"
@@ -53,7 +54,7 @@ async function target() {
 }
 
 async function input(value?: string) {
-  const piped = process.stdin.isTTY ? undefined : await Bun.stdin.text()
+  const piped = process.stdin.isTTY ? undefined : await streamText(process.stdin)
   if (!value) return piped
   if (!piped) return value
   return piped + "\n" + value
diff --git a/packages/opencode/src/cli/cmd/tui/worker.ts b/packages/opencode/src/cli/cmd/tui/worker.ts
index e63f10ba80..4452d6d764 100644
--- a/packages/opencode/src/cli/cmd/tui/worker.ts
+++ b/packages/opencode/src/cli/cmd/tui/worker.ts
@@ -10,6 +10,7 @@ import { GlobalBus } from "@/bus/global"
 import { createOpencodeClient, type Event } from "@opencode-ai/sdk/v2"
 import type { BunWebSocketData } from "hono/bun"
 import { Flag } from "@/flag/flag"
+import { setTimeout as sleep } from "node:timers/promises"
 
 await Log.init({
   print: process.argv.includes("--print-logs"),
@@ -75,7 +76,7 @@ const startEventStream = (directory: string) => {
       ).catch(() => undefined)
 
       if (!events) {
-        await Bun.sleep(250)
+        await sleep(250)
         continue
       }
 
@@ -84,7 +85,7 @@ const startEventStream = (directory: string) => {
       }
 
       if (!signal.aborted) {
-        await Bun.sleep(250)
+        await sleep(250)
       }
     }
   })().catch((error) => {
diff --git a/packages/opencode/src/cli/ui.ts b/packages/opencode/src/cli/ui.ts
index f242a77f6c..39396997c6 100644
--- a/packages/opencode/src/cli/ui.ts
+++ b/packages/opencode/src/cli/ui.ts
@@ -25,12 +25,12 @@ export namespace UI {
 
   export function println(...message: string[]) {
     print(...message)
-    Bun.stderr.write(EOL)
+    process.stderr.write(EOL)
   }
 
   export function print(...message: string[]) {
     blank = false
-    Bun.stderr.write(message.join(" "))
+    process.stderr.write(message.join(" "))
   }
 
   let blank = false
@@ -44,7 +44,7 @@ export namespace UI {
     const result: string[] = []
     const reset = "\x1b[0m"
     const left = {
-      fg: Bun.color("gray", "ansi") ?? "",
+      fg: "\x1b[90m",
       shadow: "\x1b[38;5;235m",
       bg: "\x1b[48;5;235m",
     }
diff --git a/packages/opencode/src/config/config.ts b/packages/opencode/src/config/config.ts
index 28c5b239a4..6b4242a225 100644
--- a/packages/opencode/src/config/config.ts
+++ b/packages/opencode/src/config/config.ts
@@ -1240,7 +1240,7 @@ export namespace Config {
       if (!parsed.data.$schema && isFile) {
         parsed.data.$schema = "https://opencode.ai/config.json"
         const updated = original.replace(/^\s*\{/, '{\n  "$schema": "https://opencode.ai/config.json",')
-        await Bun.write(options.path, updated).catch(() => {})
+        await Filesystem.write(options.path, updated).catch(() => {})
       }
       const data = parsed.data
       if (data.plugin && isFile) {
@@ -1401,3 +1401,5 @@ export namespace Config {
     return state().then((x) => x.directories)
   }
 }
+Filesystem.write
+Filesystem.write
diff --git a/packages/opencode/src/config/migrate-tui-config.ts b/packages/opencode/src/config/migrate-tui-config.ts
index b426e4fbd1..dbe33ffb42 100644
--- a/packages/opencode/src/config/migrate-tui-config.ts
+++ b/packages/opencode/src/config/migrate-tui-config.ts
@@ -70,7 +70,7 @@ export async function migrateTuiConfig(input: MigrateInput) {
     if (extracted.keybinds !== undefined) payload.keybinds = extracted.keybinds
     if (tui) Object.assign(payload, tui)
 
-    const wrote = await Bun.write(target, JSON.stringify(payload, null, 2))
+    const wrote = await Filesystem.write(target, JSON.stringify(payload, null, 2))
       .then(() => true)
       .catch((error) => {
         log.warn("failed to write tui migration target", { from: file, to: target, error })
@@ -104,7 +104,7 @@ async function backupAndStripLegacy(file: string, source: string) {
   const hasBackup = await Filesystem.exists(backup)
   const backed = hasBackup
     ? true
-    : await Bun.write(backup, source)
+    : await Filesystem.write(backup, source)
         .then(() => true)
         .catch((error) => {
           log.warn("failed to backup source config during tui migration", { path: file, backup, error })
@@ -123,7 +123,7 @@ async function backupAndStripLegacy(file: string, source: string) {
     return applyEdits(acc, edits)
   }, source)
 
-  return Bun.write(file, text)
+  return Filesystem.write(file, text)
     .then(() => {
       log.info("stripped tui keys from server config", { path: file, backup })
       return true
diff --git a/packages/opencode/src/mcp/oauth-callback.ts b/packages/opencode/src/mcp/oauth-callback.ts
index bb3b56f2e9..db8e621d6c 100644
--- a/packages/opencode/src/mcp/oauth-callback.ts
+++ b/packages/opencode/src/mcp/oauth-callback.ts
@@ -1,3 +1,4 @@
+import { createConnection } from "net"
 import { Log } from "../util/log"
 import { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH } from "./oauth-provider"
 
@@ -160,21 +161,12 @@ export namespace McpOAuthCallback {
 
   export async function isPortInUse(): Promise<boolean> {
     return new Promise((resolve) => {
-      Bun.connect({
-        hostname: "127.0.0.1",
-        port: OAUTH_CALLBACK_PORT,
-        socket: {
-          open(socket) {
-            socket.end()
-            resolve(true)
-          },
-          error() {
-            resolve(false)
-          },
-          data() {},
-          close() {},
-        },
-      }).catch(() => {
+      const socket = createConnection(OAUTH_CALLBACK_PORT, "127.0.0.1")
+      socket.on("connect", () => {
+        socket.destroy()
+        resolve(true)
+      })
+      socket.on("error", () => {
         resolve(false)
       })
     })
diff --git a/packages/opencode/src/plugin/codex.ts b/packages/opencode/src/plugin/codex.ts
index 56931b2ed6..5c0140e570 100644
--- a/packages/opencode/src/plugin/codex.ts
+++ b/packages/opencode/src/plugin/codex.ts
@@ -4,6 +4,7 @@ import { Installation } from "../installation"
 import { Auth, OAUTH_DUMMY_KEY } from "../auth"
 import os from "os"
 import { ProviderTransform } from "@/provider/transform"
+import { setTimeout as sleep } from "node:timers/promises"
 
 const log = Log.create({ service: "plugin.codex" })
 
@@ -361,6 +362,7 @@ export async function CodexAuthPlugin(input: PluginInput): Promise<Hooks> {
           "gpt-5.1-codex-max",
           "gpt-5.1-codex-mini",
           "gpt-5.2",
+          "gpt-5.4",
           "gpt-5.2-codex",
           "gpt-5.3-codex",
           "gpt-5.1-codex",
@@ -602,7 +604,7 @@ export async function CodexAuthPlugin(input: PluginInput): Promise<Hooks> {
                     return { type: "failed" as const }
                   }
 
-                  await Bun.sleep(interval + OAUTH_POLLING_SAFETY_MARGIN_MS)
+                  await sleep(interval + OAUTH_POLLING_SAFETY_MARGIN_MS)
                 }
               },
             }
diff --git a/packages/opencode/src/plugin/copilot.ts b/packages/opencode/src/plugin/copilot.ts
index 39ea0d00d2..3945c63ce2 100644
--- a/packages/opencode/src/plugin/copilot.ts
+++ b/packages/opencode/src/plugin/copilot.ts
@@ -1,6 +1,7 @@
 import type { Hooks, PluginInput } from "@opencode-ai/plugin"
 import { Installation } from "@/installation"
 import { iife } from "@/util/iife"
+import { setTimeout as sleep } from "node:timers/promises"
 
 const CLIENT_ID = "Ov23li8tweQw6odWQebz"
 // Add a small safety buffer when polling to avoid hitting the server
@@ -270,7 +271,7 @@ export async function CopilotAuthPlugin(input: PluginInput): Promise<Hooks> {
                   }
 
                   if (data.error === "authorization_pending") {
-                    await Bun.sleep(deviceData.interval * 1000 + OAUTH_POLLING_SAFETY_MARGIN_MS)
+                    await sleep(deviceData.interval * 1000 + OAUTH_POLLING_SAFETY_MARGIN_MS)
                     continue
                   }
 
@@ -286,13 +287,13 @@ export async function CopilotAuthPlugin(input: PluginInput): Promise<Hooks> {
                       newInterval = serverInterval * 1000
                     }
 
-                    await Bun.sleep(newInterval + OAUTH_POLLING_SAFETY_MARGIN_MS)
+                    await sleep(newInterval + OAUTH_POLLING_SAFETY_MARGIN_MS)
                     continue
                   }
 
                   if (data.error) return { type: "failed" as const }
 
-                  await Bun.sleep(deviceData.interval * 1000 + OAUTH_POLLING_SAFETY_MARGIN_MS)
+                  await sleep(deviceData.interval * 1000 + OAUTH_POLLING_SAFETY_MARGIN_MS)
                   continue
                 }
               },
diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index 8170383652..b4836ae047 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -6,9 +6,10 @@ import { mapValues, mergeDeep, omit, pickBy, sortBy } from "remeda"
 import { NoSuchModelError, type Provider as SDK } from "ai"
 import { Log } from "../util/log"
 import { BunProc } from "../bun"
+import { Hash } from "../util/hash"
 import { Plugin } from "../plugin"
-import { ModelsDev } from "./models"
 import { NamedError } from "@opencode-ai/util/error"
+import { ModelsDev } from "./models"
 import { Auth } from "../auth"
 import { Env } from "../env"
 import { Instance } from "../project/instance"
@@ -795,7 +796,7 @@ export namespace Provider {
     const modelLoaders: {
       [providerID: string]: CustomModelLoader
     } = {}
-    const sdk = new Map<number, SDK>()
+    const sdk = new Map<string, SDK>()
 
     log.info("init")
 
@@ -1085,7 +1086,7 @@ export namespace Provider {
           ...model.headers,
         }
 
-      const key = Bun.hash.xxHash32(JSON.stringify({ providerID: model.providerID, npm: model.api.npm, options }))
+      const key = Hash.fast(JSON.stringify({ providerID: model.providerID, npm: model.api.npm, options }))
       const existing = s.sdk.get(key)
       if (existing) return existing
 
diff --git a/packages/opencode/src/shell/shell.ts b/packages/opencode/src/shell/shell.ts
index e7b7cdb3e4..4779cfef75 100644
--- a/packages/opencode/src/shell/shell.ts
+++ b/packages/opencode/src/shell/shell.ts
@@ -3,6 +3,7 @@ import { lazy } from "@/util/lazy"
 import { Filesystem } from "@/util/filesystem"
 import path from "path"
 import { spawn, type ChildProcess } from "child_process"
+import { setTimeout as sleep } from "node:timers/promises"
 
 const SIGKILL_TIMEOUT_MS = 200
 
@@ -22,13 +23,13 @@ export namespace Shell {
 
     try {
       process.kill(-pid, "SIGTERM")
-      await Bun.sleep(SIGKILL_TIMEOUT_MS)
+      await sleep(SIGKILL_TIMEOUT_MS)
       if (!opts?.exited?.()) {
         process.kill(-pid, "SIGKILL")
       }
     } catch (_e) {
       proc.kill("SIGTERM")
-      await Bun.sleep(SIGKILL_TIMEOUT_MS)
+      await sleep(SIGKILL_TIMEOUT_MS)
       if (!opts?.exited?.()) {
         proc.kill("SIGKILL")
       }
diff --git a/packages/opencode/src/snapshot/index.ts b/packages/opencode/src/snapshot/index.ts
index cf254b4cef..1acbdba092 100644
--- a/packages/opencode/src/snapshot/index.ts
+++ b/packages/opencode/src/snapshot/index.ts
@@ -1,6 +1,7 @@
 import { $ } from "bun"
 import path from "path"
 import fs from "fs/promises"
+import { Filesystem } from "../util/filesystem"
 import { Log } from "../util/log"
 import { Flag } from "../flag/flag"
 import { Global } from "../global"
@@ -271,13 +272,12 @@ export namespace Snapshot {
     const target = path.join(git, "info", "exclude")
     await fs.mkdir(path.join(git, "info"), { recursive: true })
     if (!file) {
-      await Bun.write(target, "")
+      await Filesystem.write(target, "")
       return
     }
-    const text = await Bun.file(file)
-      .text()
-      .catch(() => "")
-    await Bun.write(target, text)
+    const text = await Filesystem.readText(file).catch(() => "")
+
+    await Filesystem.write(target, text)
   }
 
   async function excludes() {
diff --git a/packages/opencode/src/util/hash.ts b/packages/opencode/src/util/hash.ts
new file mode 100644
index 0000000000..680e0f40bc
--- /dev/null
+++ b/packages/opencode/src/util/hash.ts
@@ -0,0 +1,7 @@
+import { createHash } from "crypto"
+
+export namespace Hash {
+  export function fast(input: string | Buffer): string {
+    return createHash("sha1").update(input).digest("hex")
+  }
+}
diff --git a/packages/opencode/test/preload.ts b/packages/opencode/test/preload.ts
index 41028633e8..caac3bb0de 100644
--- a/packages/opencode/test/preload.ts
+++ b/packages/opencode/test/preload.ts
@@ -3,6 +3,7 @@
 import os from "os"
 import path from "path"
 import fs from "fs/promises"
+import { setTimeout as sleep } from "node:timers/promises"
 import { afterAll } from "bun:test"
 
 // Set XDG env vars FIRST, before any src/ imports
@@ -15,7 +16,7 @@ afterAll(async () => {
     typeof error === "object" && error !== null && "code" in error && error.code === "EBUSY"
   const rm = async (left: number): Promise<void> => {
     Bun.gc(true)
-    await Bun.sleep(100)
+    await sleep(100)
     return fs.rm(dir, { recursive: true, force: true }).catch((error) => {
       if (!busy(error)) throw error
       if (left <= 1) throw error
diff --git a/packages/opencode/test/pty/pty-output-isolation.test.ts b/packages/opencode/test/pty/pty-output-isolation.test.ts
index 44858a0ed2..ec1bbd4690 100644
--- a/packages/opencode/test/pty/pty-output-isolation.test.ts
+++ b/packages/opencode/test/pty/pty-output-isolation.test.ts
@@ -2,6 +2,7 @@ import { describe, expect, test } from "bun:test"
 import { Instance } from "../../src/project/instance"
 import { Pty } from "../../src/pty"
 import { tmpdir } from "../fixture/fixture"
+import { setTimeout as sleep } from "node:timers/promises"
 
 describe("pty", () => {
   test("does not leak output when websocket objects are reused", async () => {
@@ -43,7 +44,7 @@ describe("pty", () => {
 
           // Output from a must never show up in b.
           Pty.write(a.id, "AAA\n")
-          await Bun.sleep(100)
+          await sleep(100)
 
           expect(outB.join("")).not.toContain("AAA")
         } finally {
@@ -88,7 +89,7 @@ describe("pty", () => {
           }
 
           Pty.write(a.id, "AAA\n")
-          await Bun.sleep(100)
+          await sleep(100)
 
           expect(outB.join("")).not.toContain("AAA")
         } finally {
@@ -128,7 +129,7 @@ describe("pty", () => {
           ctx.connId = 2
 
           Pty.write(a.id, "AAA\n")
-          await Bun.sleep(100)
+          await sleep(100)
 
           expect(out.join("")).toContain("AAA")
         } finally {
diff --git a/packages/opencode/test/session/retry.test.ts b/packages/opencode/test/session/retry.test.ts
index 6768e72d95..eba4a99505 100644
--- a/packages/opencode/test/session/retry.test.ts
+++ b/packages/opencode/test/session/retry.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, test } from "bun:test"
 import type { NamedError } from "@opencode-ai/util/error"
 import { APICallError } from "ai"
+import { setTimeout as sleep } from "node:timers/promises"
 import { SessionRetry } from "../../src/session/retry"
 import { MessageV2 } from "../../src/session/message-v2"
 
@@ -135,7 +136,7 @@ describe("session.message-v2.fromError", () => {
             new ReadableStream({
               async pull(controller) {
                 controller.enqueue("Hello,")
-                await Bun.sleep(10000)
+                await sleep(10000)
                 controller.enqueue(" World!")
                 controller.close()
               },
diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index e57e83d051..d8911922ec 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/plugin",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/sdk/js/package.json b/packages/sdk/js/package.json
index 22993464e3..fe3ce393d6 100644
--- a/packages/sdk/js/package.json
+++ b/packages/sdk/js/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/sdk",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/slack/package.json b/packages/slack/package.json
index 1407c0e4a9..d37e140581 100644
--- a/packages/slack/package.json
+++ b/packages/slack/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/slack",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/ui/package.json b/packages/ui/package.json
index 0adc4c57f1..48c668c6fb 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/ui",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "type": "module",
   "license": "MIT",
   "exports": {
diff --git a/packages/util/package.json b/packages/util/package.json
index 87cf20591e..bc84be6360 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/util",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/web/package.json b/packages/web/package.json
index 4e7ac7cd8b..c85ba1a0b9 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -2,7 +2,7 @@
   "name": "@opencode-ai/web",
   "type": "module",
   "license": "MIT",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "scripts": {
     "dev": "astro dev",
     "dev:remote": "VITE_API_URL=https://api.opencode.ai astro dev",
diff --git a/sdks/vscode/package.json b/sdks/vscode/package.json
index 64307f053d..215143ac99 100644
--- a/sdks/vscode/package.json
+++ b/sdks/vscode/package.json
@@ -2,7 +2,7 @@
   "name": "opencode",
   "displayName": "opencode",
   "description": "opencode for VS Code",
-  "version": "1.2.18",
+  "version": "1.2.19",
   "publisher": "sst-dev",
   "repository": {
     "type": "git",