refactor: isolate legacy flags

packages/cli/src/index.ts

@@ -72,6 +72,7 @@ Effect.logInfo("cli starting", {
     Observability.layer({
       endpoint: process.env.OTEL_EXPORTER_OTLP_ENDPOINT,
       headers: process.env.OTEL_EXPORTER_OTLP_HEADERS,
+      client: process.env.OPENCODE_CLIENT ?? "cli",
     }),
   ),
   Effect.provide(NodeServices.layer),

packages/cli/src/mini-host.ts

@@ -1,6 +1,5 @@
 import type { MiniFrontendInput } from "@opencode-ai/tui/mini"
 import { createModelPreferenceRepository } from "@opencode-ai/tui/model-preference"
-import { Flag } from "@opencode-ai/core/flag/flag"
 import { Global } from "@opencode-ai/core/global"
 import fs from "node:fs"
 import { readFile } from "node:fs/promises"
@@ -165,7 +164,7 @@ export function createMiniHost(input: {
       sigusr2: signal("SIGUSR2"),
     },
     startup: {
-      showTiming: Flag.OPENCODE_SHOW_TTFD,
+      showTiming: ["1", "true"].includes(process.env.OPENCODE_SHOW_TTFD?.toLowerCase() ?? ""),
       now: () => performance.now(),
     },
     diagnostics: {

packages/cli/src/server-process.ts

@@ -69,9 +69,11 @@ const processEffect = Effect.fnUntraced(function* (options: Options) {
       const instanceID = randomUUID()
       const server = yield* start(
         {
+          client: process.env.OPENCODE_CLIENT ?? "cli",
           hostname,
           port,
           password,
+          simulation: truthy(process.env.OPENCODE_SIMULATE),
           database: {
             path: process.env.OPENCODE_DB,
           },
@@ -89,6 +91,8 @@ const processEffect = Effect.fnUntraced(function* (options: Options) {
             project: !truthy(
               process.env.OPENCODE_CONFIG_PROJECT_DISABLE ?? process.env.OPENCODE_DISABLE_PROJECT_CONFIG,
             ),
+            file: process.env.OPENCODE_CONFIG,
+            content: process.env.OPENCODE_CONFIG_CONTENT,
           },
           windows: {
             gitbash: process.env.OPENCODE_GIT_BASH_PATH,

packages/cli/src/services/updater.ts

@@ -1,5 +1,4 @@
 import { Global } from "@opencode-ai/core/global"
-import { Flag } from "@opencode-ai/core/flag/flag"
 import { AppProcess } from "@opencode-ai/core/process"
 import {
   InstallationChannel,
@@ -138,7 +137,10 @@ export const layer = Layer.effect(
     })
 
     const check = Effect.fn("cli.updater.check")(function* () {
-      if (InstallationLocal || Flag.OPENCODE_DISABLE_AUTOUPDATE)
+      if (
+        InstallationLocal ||
+        ["1", "true"].includes(process.env.OPENCODE_DISABLE_AUTOUPDATE?.toLowerCase() ?? "")
+      )
         return yield* Effect.logInfo("update check skipped", {
           reason: InstallationLocal ? "local-install" : "disabled",
           version: InstallationVersion,