core: consolidate shared infrastructure into core package

Moves effect logging, observability, runtime utilities, flags, installation
version info, and process utilities from opencode to core package. This
enables better code sharing across packages and establishes core as the
single source of truth for foundational utilities.

All internal imports updated to use @opencode-ai/core paths for consistency.

packages/opencode/src/cli/cmd/mcp.ts

@@ -11,7 +11,7 @@ import { Config } from "../../config"
 import { ConfigMCP } from "../../config/mcp"
 import { Instance } from "../../project/instance"
 import { Installation } from "../../installation"
-import { InstallationVersion } from "../../installation/version"
+import { InstallationVersion } from "@opencode-ai/core/installation/version"
 import path from "path"
 import { Global } from "../../global"
 import { modify, applyEdits } from "jsonc-parser"

packages/opencode/src/cli/cmd/run.ts

@@ -3,7 +3,7 @@ import path from "path"
 import { pathToFileURL } from "url"
 import { UI } from "../ui"
 import { cmd } from "./cmd"
-import { Flag } from "../../flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { bootstrap } from "../bootstrap"
 import { EOL } from "os"
 import { Filesystem } from "../../util"

packages/opencode/src/cli/cmd/serve.ts

@@ -1,7 +1,7 @@
 import { Server } from "../../server/server"
 import { cmd } from "./cmd"
 import { withNetworkOptions, resolveNetworkOptions } from "../network"
-import { Flag } from "../../flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 
 export const ServeCommand = cmd({
   command: "serve",

packages/opencode/src/cli/cmd/session.ts

@@ -5,7 +5,7 @@ import { SessionID } from "../../session/schema"
 import { bootstrap } from "../bootstrap"
 import { UI } from "../ui"
 import { Locale } from "../../util"
-import { Flag } from "../../flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { Filesystem } from "../../util"
 import { Process } from "../../util"
 import { EOL } from "os"

packages/opencode/src/cli/cmd/tui/app.tsx

@@ -16,7 +16,7 @@ import {
   on,
 } from "solid-js"
 import { win32DisableProcessedInput, win32InstallCtrlCGuard } from "./win32"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import semver from "semver"
 import { DialogProvider, useDialog } from "@tui/ui/dialog"
 import { DialogProvider as DialogProviderList } from "@tui/component/dialog-provider"

packages/opencode/src/cli/cmd/tui/component/dialog-session-list.tsx

@@ -8,7 +8,7 @@ import { useProject } from "@tui/context/project"
 import { useKeybind } from "../context/keybind"
 import { useTheme } from "../context/theme"
 import { useSDK } from "../context/sdk"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { DialogSessionRename } from "./dialog-session-rename"
 import { Keybind } from "@/util"
 import { createDebouncedSignal } from "../util/signal"

packages/opencode/src/cli/cmd/tui/component/dialog-workspace-create.tsx

@@ -7,7 +7,7 @@ import { useProject } from "@tui/context/project"
 import { createMemo, createSignal, onMount } from "solid-js"
 import { setTimeout as sleep } from "node:timers/promises"
 import { errorData, errorMessage } from "@/util/error"
-import * as Log from "@/util/log"
+import * as Log from "@opencode-ai/core/util/log"
 import { useSDK } from "../context/sdk"
 import { useToast } from "../ui/toast"
 

packages/opencode/src/cli/cmd/tui/component/error-component.tsx

@@ -2,7 +2,7 @@ import { TextAttributes } from "@opentui/core"
 import { useKeyboard, useRenderer, useTerminalDimensions } from "@opentui/solid"
 import * as Clipboard from "@tui/util/clipboard"
 import { createSignal } from "solid-js"
-import { InstallationVersion } from "@/installation/version"
+import { InstallationVersion } from "@opencode-ai/core/installation/version"
 import { win32FlushInputBuffer } from "../win32"
 import { getScrollAcceleration } from "../util/scroll"
 

packages/opencode/src/cli/cmd/tui/config/tui-migrate.ts

@@ -3,7 +3,7 @@ import { type ParseError as JsoncParseError, applyEdits, modify, parse as parseJ
 import { unique } from "remeda"
 import z from "zod"
 import { TuiInfo, TuiOptions } from "./tui-schema"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { Global } from "@/global"
 import { Filesystem, Log } from "@/util"
 import * as ConfigPaths from "@/config/paths"

packages/opencode/src/cli/cmd/tui/config/tui.ts

@@ -7,15 +7,15 @@ import { ConfigParse } from "@/config/parse"
 import * as ConfigPaths from "@/config/paths"
 import { migrateTuiConfig } from "./tui-migrate"
 import { TuiInfo } from "./tui-schema"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { isRecord } from "@/util/record"
 import { Global } from "@/global"
 import { AppFileSystem } from "@opencode-ai/core/filesystem"
 import { CurrentWorkingDirectory } from "./cwd"
 import { ConfigPlugin } from "@/config/plugin"
 import { ConfigKeybinds } from "@/config/keybinds"
-import { InstallationLocal, InstallationVersion } from "@/installation/version"
-import { makeRuntime } from "@/effect/runtime"
+import { InstallationLocal, InstallationVersion } from "@opencode-ai/core/installation/version"
+import { makeRuntime } from "@opencode-ai/core/effect/runtime"
 import { Filesystem, Log } from "@/util"
 import { ConfigVariable } from "@/config/variable"
 import { Npm } from "@/npm"

packages/opencode/src/cli/cmd/tui/context/sdk.tsx

@@ -2,7 +2,7 @@ import { createOpencodeClient } from "@opencode-ai/sdk/v2"
 import type { GlobalEvent } from "@opencode-ai/sdk/v2"
 import { createSimpleContext } from "./helper"
 import { createGlobalEmitter } from "@solid-primitives/event-bus"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { batch, onCleanup, onMount } from "solid-js"
 
 export type EventSource = {

packages/opencode/src/cli/cmd/tui/layer.ts

@@ -1,6 +1,6 @@
 import { Layer } from "effect"
 import { TuiConfig } from "./config/tui"
 import { Npm } from "@/npm"
-import { Observability } from "@/effect/observability"
+import { Observability } from "@opencode-ai/core/effect/observability"
 
 export const CliLayer = Observability.layer.pipe(Layer.merge(TuiConfig.layer), Layer.provide(Npm.defaultLayer))

packages/opencode/src/cli/cmd/tui/plugin/api.tsx

@@ -18,7 +18,7 @@ import { DialogSelect, type DialogSelectOption as SelectOption } from "../ui/dia
 import { Prompt } from "../component/prompt"
 import { Slot as HostSlot } from "./slots"
 import type { useToast } from "../ui/toast"
-import { InstallationVersion } from "@/installation/version"
+import { InstallationVersion } from "@opencode-ai/core/installation/version"
 
 type RouteEntry = {
   key: symbol

packages/opencode/src/cli/cmd/tui/plugin/runtime.ts

@@ -33,7 +33,7 @@ import { Global } from "@/global"
 import { Filesystem } from "@/util"
 import { Process } from "@/util"
 import { Flock } from "@opencode-ai/core/util/flock"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { INTERNAL_TUI_PLUGINS, type InternalTuiPlugin } from "./internal"
 import { setupSlots, Slot as View } from "./slots"
 import type { HostPluginApi, HostSlots } from "./slots"

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -64,7 +64,7 @@ import { DialogForkFromTimeline } from "./dialog-fork-from-timeline"
 import { DialogSessionRename } from "../../component/dialog-session-rename"
 import { Sidebar } from "./sidebar"
 import { SubagentFooter } from "./subagent-footer.tsx"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { LANGUAGE_EXTENSIONS } from "@/lsp/language"
 import parsers from "../../../../../../parsers-config.ts"
 import * as Clipboard from "../../util/clipboard"

packages/opencode/src/cli/cmd/tui/routes/session/sidebar.tsx

@@ -3,7 +3,7 @@ import { useSync } from "@tui/context/sync"
 import { createMemo, Show } from "solid-js"
 import { useTheme } from "../../context/theme"
 import { useTuiConfig } from "../../context/tui-config"
-import { InstallationChannel, InstallationVersion } from "@/installation/version"
+import { InstallationChannel, InstallationVersion } from "@opencode-ai/core/installation/version"
 import { TuiPluginRuntime } from "../../plugin"
 
 import { getScrollAcceleration } from "../../util/scroll"

packages/opencode/src/cli/cmd/tui/thread.ts

@@ -15,7 +15,7 @@ import type { EventSource } from "./context/sdk"
 import { win32DisableProcessedInput, win32InstallCtrlCGuard } from "./win32"
 import { writeHeapSnapshot } from "v8"
 import { TuiConfig } from "./config/tui"
-import { OPENCODE_PROCESS_ROLE, OPENCODE_RUN_ID, ensureRunID, sanitizedProcessEnv } from "@/util/opencode-process"
+import { OPENCODE_PROCESS_ROLE, OPENCODE_RUN_ID, ensureRunID, sanitizedProcessEnv } from "@opencode-ai/core/util/opencode-process"
 import { validateSession } from "./validate-session"
 
 declare global {

packages/opencode/src/cli/cmd/tui/ui/dialog.tsx

@@ -4,7 +4,7 @@ import { useTheme } from "@tui/context/theme"
 import { MouseButton, Renderable, RGBA } from "@opentui/core"
 import { createStore } from "solid-js/store"
 import { useToast } from "./toast"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import * as Selection from "@tui/util/selection"
 
 export function Dialog(

packages/opencode/src/cli/cmd/tui/worker.ts

@@ -7,11 +7,11 @@ import { Rpc } from "@/util"
 import { upgrade } from "@/cli/upgrade"
 import { Config } from "@/config"
 import { GlobalBus } from "@/bus/global"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { writeHeapSnapshot } from "node:v8"
 import { Heap } from "@/cli/heap"
 import { AppRuntime } from "@/effect/app-runtime"
-import { ensureProcessMetadata } from "@/util/opencode-process"
+import { ensureProcessMetadata } from "@opencode-ai/core/util/opencode-process"
 
 ensureProcessMetadata("worker")
 

packages/opencode/src/cli/cmd/upgrade.ts

@@ -3,7 +3,7 @@ import { UI } from "../ui"
 import * as prompts from "@clack/prompts"
 import { AppRuntime } from "@/effect/app-runtime"
 import { Installation } from "../../installation"
-import { InstallationVersion } from "../../installation/version"
+import { InstallationVersion } from "@opencode-ai/core/installation/version"
 
 export const UpgradeCommand = {
   command: "upgrade [target]",

packages/opencode/src/cli/cmd/web.ts

@@ -2,7 +2,7 @@ import { Server } from "../../server/server"
 import { UI } from "../ui"
 import { cmd } from "./cmd"
 import { withNetworkOptions, resolveNetworkOptions } from "../network"
-import { Flag } from "../../flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import open from "open"
 import { networkInterfaces } from "os"
 

packages/opencode/src/cli/heap.ts

@@ -1,6 +1,6 @@
 import path from "path"
 import { writeHeapSnapshot } from "node:v8"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { Global } from "@/global"
 import { Log } from "@/util"
 

packages/opencode/src/cli/upgrade.ts

@@ -1,9 +1,9 @@
 import { Bus } from "@/bus"
 import { Config } from "@/config"
 import { AppRuntime } from "@/effect/app-runtime"
-import { Flag } from "@/flag/flag"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import { Installation } from "@/installation"
-import { InstallationVersion } from "@/installation/version"
+import { InstallationVersion } from "@opencode-ai/core/installation/version"
 
 export async function upgrade() {
   const config = await AppRuntime.runPromise(Config.Service.use((cfg) => cfg.getGlobal()))