split tui/server config (#13968)

packages/opencode/src/config/config.ts

@@ -4,7 +4,6 @@ import { pathToFileURL, fileURLToPath } from "url"
 import { createRequire } from "module"
 import os from "os"
 import z from "zod"
-import { Filesystem } from "../util/filesystem"
 import { ModelsDev } from "../provider/models"
 import { mergeDeep, pipe, unique } from "remeda"
 import { Global } from "../global"
@@ -34,6 +33,8 @@ import { PackageRegistry } from "@/bun/registry"
 import { proxied } from "@/util/proxied"
 import { iife } from "@/util/iife"
 import { Control } from "@/control"
+import { ConfigPaths } from "./paths"
+import { Filesystem } from "@/util/filesystem"
 
 export namespace Config {
   const ModelId = z.string().meta({ $ref: "https://models.dev/model-schema.json#/$defs/Model" })
@@ -42,7 +43,7 @@ export namespace Config {
 
   // Managed settings directory for enterprise deployments (highest priority, admin-controlled)
   // These settings override all user and project settings
-  function getManagedConfigDir(): string {
+  function systemManagedConfigDir(): string {
     switch (process.platform) {
       case "darwin":
         return "/Library/Application Support/opencode"
@@ -53,10 +54,14 @@ export namespace Config {
     }
   }
 
-  const managedConfigDir = process.env.OPENCODE_TEST_MANAGED_CONFIG_DIR || getManagedConfigDir()
+  export function managedConfigDir() {
+    return process.env.OPENCODE_TEST_MANAGED_CONFIG_DIR || systemManagedConfigDir()
+  }
+
+  const managedDir = managedConfigDir()
 
   // Custom merge function that concatenates array fields instead of replacing them
-  function merge(target: Info, source: Info): Info {
+  function mergeConfigConcatArrays(target: Info, source: Info): Info {
     const merged = mergeDeep(target, source)
     if (target.plugin && source.plugin) {
       merged.plugin = Array.from(new Set([...target.plugin, ...source.plugin]))
@@ -91,7 +96,7 @@ export namespace Config {
         const remoteConfig = wellknown.config ?? {}
         // Add $schema to prevent load() from trying to write back to a non-existent file
         if (!remoteConfig.$schema) remoteConfig.$schema = "https://opencode.ai/config.json"
-        result = merge(
+        result = mergeConfigConcatArrays(
           result,
           await load(JSON.stringify(remoteConfig), {
             dir: path.dirname(`${key}/.well-known/opencode`),
@@ -107,21 +112,18 @@ export namespace Config {
     }
 
     // Global user config overrides remote config.
-    result = merge(result, await global())
+    result = mergeConfigConcatArrays(result, await global())
 
     // Custom config path overrides global config.
     if (Flag.OPENCODE_CONFIG) {
-      result = merge(result, await loadFile(Flag.OPENCODE_CONFIG))
+      result = mergeConfigConcatArrays(result, await loadFile(Flag.OPENCODE_CONFIG))
       log.debug("loaded custom config", { path: Flag.OPENCODE_CONFIG })
     }
 
     // Project config overrides global and remote config.
     if (!Flag.OPENCODE_DISABLE_PROJECT_CONFIG) {
-      for (const file of ["opencode.jsonc", "opencode.json"]) {
-        const found = await Filesystem.findUp(file, Instance.directory, Instance.worktree)
-        for (const resolved of found.toReversed()) {
-          result = merge(result, await loadFile(resolved))
-        }
+      for (const file of await ConfigPaths.projectFiles("opencode", Instance.directory, Instance.worktree)) {
+        result = mergeConfigConcatArrays(result, await loadFile(file))
       }
     }
 
@@ -129,31 +131,10 @@ export namespace Config {
     result.mode = result.mode || {}
     result.plugin = result.plugin || []
 
-    const directories = [
-      Global.Path.config,
-      // Only scan project .opencode/ directories when project discovery is enabled
-      ...(!Flag.OPENCODE_DISABLE_PROJECT_CONFIG
-        ? await Array.fromAsync(
-            Filesystem.up({
-              targets: [".opencode"],
-              start: Instance.directory,
-              stop: Instance.worktree,
-            }),
-          )
-        : []),
-      // Always scan ~/.opencode/ (user home directory)
-      ...(await Array.fromAsync(
-        Filesystem.up({
-          targets: [".opencode"],
-          start: Global.Path.home,
-          stop: Global.Path.home,
-        }),
-      )),
-    ]
+    const directories = await ConfigPaths.directories(Instance.directory, Instance.worktree)
 
     // .opencode directory config overrides (project and global) config sources.
     if (Flag.OPENCODE_CONFIG_DIR) {
-      directories.push(Flag.OPENCODE_CONFIG_DIR)
       log.debug("loading config from OPENCODE_CONFIG_DIR", { path: Flag.OPENCODE_CONFIG_DIR })
     }
 
@@ -163,7 +144,7 @@ export namespace Config {
       if (dir.endsWith(".opencode") || dir === Flag.OPENCODE_CONFIG_DIR) {
         for (const file of ["opencode.jsonc", "opencode.json"]) {
           log.debug(`loading config from ${path.join(dir, file)}`)
-          result = merge(result, await loadFile(path.join(dir, file)))
+          result = mergeConfigConcatArrays(result, await loadFile(path.join(dir, file)))
           // to satisfy the type checker
           result.agent ??= {}
           result.mode ??= {}
@@ -186,7 +167,7 @@ export namespace Config {
 
     // Inline config content overrides all non-managed config sources.
     if (process.env.OPENCODE_CONFIG_CONTENT) {
-      result = merge(
+      result = mergeConfigConcatArrays(
         result,
         await load(process.env.OPENCODE_CONFIG_CONTENT, {
           dir: Instance.directory,
@@ -200,9 +181,9 @@ export namespace Config {
     // Kept separate from directories array to avoid write operations when installing plugins
     // which would fail on system directories requiring elevated permissions
     // This way it only loads config file and not skills/plugins/commands
-    if (existsSync(managedConfigDir)) {
+    if (existsSync(managedDir)) {
       for (const file of ["opencode.jsonc", "opencode.json"]) {
-        result = merge(result, await loadFile(path.join(managedConfigDir, file)))
+        result = mergeConfigConcatArrays(result, await loadFile(path.join(managedDir, file)))
       }
     }
 
@@ -241,8 +222,6 @@ export namespace Config {
       result.share = "auto"
     }
 
-    if (!result.keybinds) result.keybinds = Info.shape.keybinds.parse({})
-
     // Apply flag overrides for compaction settings
     if (Flag.OPENCODE_DISABLE_AUTOCOMPACT) {
       result.compaction = { ...result.compaction, auto: false }
@@ -306,7 +285,7 @@ export namespace Config {
     }
   }
 
-  async function needsInstall(dir: string) {
+  export async function needsInstall(dir: string) {
     // Some config dirs may be read-only.
     // Installing deps there will fail; skip installation in that case.
     const writable = await isWritable(dir)
@@ -930,20 +909,6 @@ export namespace Config {
       ref: "KeybindsConfig",
     })
 
-  export const TUI = z.object({
-    scroll_speed: z.number().min(0.001).optional().describe("TUI scroll speed"),
-    scroll_acceleration: z
-      .object({
-        enabled: z.boolean().describe("Enable scroll acceleration"),
-      })
-      .optional()
-      .describe("Scroll acceleration settings"),
-    diff_style: z
-      .enum(["auto", "stacked"])
-      .optional()
-      .describe("Control diff rendering style: 'auto' adapts to terminal width, 'stacked' always shows single column"),
-  })
-
   export const Server = z
     .object({
       port: z.number().int().positive().optional().describe("Port to listen on"),
@@ -1018,10 +983,7 @@ export namespace Config {
   export const Info = z
     .object({
       $schema: z.string().optional().describe("JSON schema reference for configuration validation"),
-      theme: z.string().optional().describe("Theme name to use for the interface"),
-      keybinds: Keybinds.optional().describe("Custom keybind configurations"),
       logLevel: Log.Level.optional().describe("Log level"),
-      tui: TUI.optional().describe("TUI specific settings"),
       server: Server.optional().describe("Server configuration for opencode serve and web commands"),
       command: z
         .record(z.string(), Command)
@@ -1241,86 +1203,37 @@ export namespace Config {
     return result
   })
 
+  export const { readFile } = ConfigPaths
+
   async function loadFile(filepath: string): Promise<Info> {
     log.info("loading", { path: filepath })
-    let text = await Filesystem.readText(filepath).catch((err: any) => {
-      if (err.code === "ENOENT") return
-      throw new JsonError({ path: filepath }, { cause: err })
-    })
+    const text = await readFile(filepath)
     if (!text) return {}
     return load(text, { path: filepath })
   }
 
   async function load(text: string, options: { path: string } | { dir: string; source: string }) {
     const original = text
-    const configDir = "path" in options ? path.dirname(options.path) : options.dir
     const source = "path" in options ? options.path : options.source
     const isFile = "path" in options
+    const data = await ConfigPaths.parseText(
+      text,
+      "path" in options ? options.path : { source: options.source, dir: options.dir },
+    )
 
-    text = text.replace(/\{env:([^}]+)\}/g, (_, varName) => {
-      return process.env[varName] || ""
-    })
+    const normalized = (() => {
+      if (!data || typeof data !== "object" || Array.isArray(data)) return data
+      const copy = { ...(data as Record<string, unknown>) }
+      const hadLegacy = "theme" in copy || "keybinds" in copy || "tui" in copy
+      if (!hadLegacy) return copy
+      delete copy.theme
+      delete copy.keybinds
+      delete copy.tui
+      log.warn("tui keys in opencode config are deprecated; move them to tui.json", { path: source })
+      return copy
+    })()
 
-    const fileMatches = text.match(/\{file:[^}]+\}/g)
-    if (fileMatches) {
-      const lines = text.split("\n")
-
-      for (const match of fileMatches) {
-        const lineIndex = lines.findIndex((line) => line.includes(match))
-        if (lineIndex !== -1 && lines[lineIndex].trim().startsWith("//")) {
-          continue
-        }
-        let filePath = match.replace(/^\{file:/, "").replace(/\}$/, "")
-        if (filePath.startsWith("~/")) {
-          filePath = path.join(os.homedir(), filePath.slice(2))
-        }
-        const resolvedPath = path.isAbsolute(filePath) ? filePath : path.resolve(configDir, filePath)
-        const fileContent = (
-          await Bun.file(resolvedPath)
-            .text()
-            .catch((error) => {
-              const errMsg = `bad file reference: "${match}"`
-              if (error.code === "ENOENT") {
-                throw new InvalidError(
-                  {
-                    path: source,
-                    message: errMsg + ` ${resolvedPath} does not exist`,
-                  },
-                  { cause: error },
-                )
-              }
-              throw new InvalidError({ path: source, message: errMsg }, { cause: error })
-            })
-        ).trim()
-        text = text.replace(match, () => JSON.stringify(fileContent).slice(1, -1))
-      }
-    }
-
-    const errors: JsoncParseError[] = []
-    const data = parseJsonc(text, errors, { allowTrailingComma: true })
-    if (errors.length) {
-      const lines = text.split("\n")
-      const errorDetails = errors
-        .map((e) => {
-          const beforeOffset = text.substring(0, e.offset).split("\n")
-          const line = beforeOffset.length
-          const column = beforeOffset[beforeOffset.length - 1].length + 1
-          const problemLine = lines[line - 1]
-
-          const error = `${printParseErrorCode(e.error)} at line ${line}, column ${column}`
-          if (!problemLine) return error
-
-          return `${error}\n   Line ${line}: ${problemLine}\n${"".padStart(column + 9)}^`
-        })
-        .join("\n")
-
-      throw new JsonError({
-        path: source,
-        message: `\n--- JSONC Input ---\n${text}\n--- Errors ---\n${errorDetails}\n--- End ---`,
-      })
-    }
-
-    const parsed = Info.safeParse(data)
+    const parsed = Info.safeParse(normalized)
     if (parsed.success) {
       if (!parsed.data.$schema && isFile) {
         parsed.data.$schema = "https://opencode.ai/config.json"
@@ -1353,13 +1266,7 @@ export namespace Config {
       issues: parsed.error.issues,
     })
   }
-  export const JsonError = NamedError.create(
-    "ConfigJsonError",
-    z.object({
-      path: z.string(),
-      message: z.string().optional(),
-    }),
-  )
+  export const { JsonError, InvalidError } = ConfigPaths
 
   export const ConfigDirectoryTypoError = NamedError.create(
     "ConfigDirectoryTypoError",
@@ -1370,15 +1277,6 @@ export namespace Config {
     }),
   )
 
-  export const InvalidError = NamedError.create(
-    "ConfigInvalidError",
-    z.object({
-      path: z.string(),
-      issues: z.custom<z.core.$ZodIssue[]>().optional(),
-      message: z.string().optional(),
-    }),
-  )
-
   export async function get() {
     return state().then((x) => x.config)
   }

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

@@ -0,0 +1,155 @@
+import path from "path"
+import { type ParseError as JsoncParseError, applyEdits, modify, parse as parseJsonc } from "jsonc-parser"
+import { unique } from "remeda"
+import z from "zod"
+import { ConfigPaths } from "./paths"
+import { TuiInfo, TuiOptions } from "./tui-schema"
+import { Instance } from "@/project/instance"
+import { Flag } from "@/flag/flag"
+import { Log } from "@/util/log"
+import { Filesystem } from "@/util/filesystem"
+import { Global } from "@/global"
+
+const log = Log.create({ service: "tui.migrate" })
+
+const TUI_SCHEMA_URL = "https://opencode.ai/tui.json"
+
+const LegacyTheme = TuiInfo.shape.theme.optional()
+const LegacyRecord = z.record(z.string(), z.unknown()).optional()
+
+const TuiLegacy = z
+  .object({
+    scroll_speed: TuiOptions.shape.scroll_speed.catch(undefined),
+    scroll_acceleration: TuiOptions.shape.scroll_acceleration.catch(undefined),
+    diff_style: TuiOptions.shape.diff_style.catch(undefined),
+  })
+  .strip()
+
+interface MigrateInput {
+  directories: string[]
+  custom?: string
+  managed: string
+}
+
+/**
+ * Migrates tui-specific keys (theme, keybinds, tui) from opencode.json files
+ * into dedicated tui.json files. Migration is performed per-directory and
+ * skips only locations where a tui.json already exists.
+ */
+export async function migrateTuiConfig(input: MigrateInput) {
+  const opencode = await opencodeFiles(input)
+  for (const file of opencode) {
+    const source = await Filesystem.readText(file).catch((error) => {
+      log.warn("failed to read config for tui migration", { path: file, error })
+      return undefined
+    })
+    if (!source) continue
+    const errors: JsoncParseError[] = []
+    const data = parseJsonc(source, errors, { allowTrailingComma: true })
+    if (errors.length || !data || typeof data !== "object" || Array.isArray(data)) continue
+
+    const theme = LegacyTheme.safeParse("theme" in data ? data.theme : undefined)
+    const keybinds = LegacyRecord.safeParse("keybinds" in data ? data.keybinds : undefined)
+    const legacyTui = LegacyRecord.safeParse("tui" in data ? data.tui : undefined)
+    const extracted = {
+      theme: theme.success ? theme.data : undefined,
+      keybinds: keybinds.success ? keybinds.data : undefined,
+      tui: legacyTui.success ? legacyTui.data : undefined,
+    }
+    const tui = extracted.tui ? normalizeTui(extracted.tui) : undefined
+    if (extracted.theme === undefined && extracted.keybinds === undefined && !tui) continue
+
+    const target = path.join(path.dirname(file), "tui.json")
+    const targetExists = await Filesystem.exists(target)
+    if (targetExists) continue
+
+    const payload: Record<string, unknown> = {
+      $schema: TUI_SCHEMA_URL,
+    }
+    if (extracted.theme !== undefined) payload.theme = extracted.theme
+    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))
+      .then(() => true)
+      .catch((error) => {
+        log.warn("failed to write tui migration target", { from: file, to: target, error })
+        return false
+      })
+    if (!wrote) continue
+
+    const stripped = await backupAndStripLegacy(file, source)
+    if (!stripped) {
+      log.warn("tui config migrated but source file was not stripped", { from: file, to: target })
+      continue
+    }
+    log.info("migrated tui config", { from: file, to: target })
+  }
+}
+
+function normalizeTui(data: Record<string, unknown>) {
+  const parsed = TuiLegacy.parse(data)
+  if (
+    parsed.scroll_speed === undefined &&
+    parsed.diff_style === undefined &&
+    parsed.scroll_acceleration === undefined
+  ) {
+    return
+  }
+  return parsed
+}
+
+async function backupAndStripLegacy(file: string, source: string) {
+  const backup = file + ".tui-migration.bak"
+  const hasBackup = await Filesystem.exists(backup)
+  const backed = hasBackup
+    ? true
+    : await Bun.write(backup, source)
+        .then(() => true)
+        .catch((error) => {
+          log.warn("failed to backup source config during tui migration", { path: file, backup, error })
+          return false
+        })
+  if (!backed) return false
+
+  const text = ["theme", "keybinds", "tui"].reduce((acc, key) => {
+    const edits = modify(acc, [key], undefined, {
+      formattingOptions: {
+        insertSpaces: true,
+        tabSize: 2,
+      },
+    })
+    if (!edits.length) return acc
+    return applyEdits(acc, edits)
+  }, source)
+
+  return Bun.write(file, text)
+    .then(() => {
+      log.info("stripped tui keys from server config", { path: file, backup })
+      return true
+    })
+    .catch((error) => {
+      log.warn("failed to strip legacy tui keys from server config", { path: file, backup, error })
+      return false
+    })
+}
+
+async function opencodeFiles(input: { directories: string[]; managed: string }) {
+  const project = Flag.OPENCODE_DISABLE_PROJECT_CONFIG
+    ? []
+    : await ConfigPaths.projectFiles("opencode", Instance.directory, Instance.worktree)
+  const files = [...project, ...ConfigPaths.fileInDirectory(Global.Path.config, "opencode")]
+  for (const dir of unique(input.directories)) {
+    files.push(...ConfigPaths.fileInDirectory(dir, "opencode"))
+  }
+  if (Flag.OPENCODE_CONFIG) files.push(Flag.OPENCODE_CONFIG)
+  files.push(...ConfigPaths.fileInDirectory(input.managed, "opencode"))
+
+  const existing = await Promise.all(
+    unique(files).map(async (file) => {
+      const ok = await Filesystem.exists(file)
+      return ok ? file : undefined
+    }),
+  )
+  return existing.filter((file): file is string => !!file)
+}

packages/opencode/src/config/paths.ts

@@ -0,0 +1,174 @@
+import path from "path"
+import os from "os"
+import z from "zod"
+import { type ParseError as JsoncParseError, parse as parseJsonc, printParseErrorCode } from "jsonc-parser"
+import { NamedError } from "@opencode-ai/util/error"
+import { Filesystem } from "@/util/filesystem"
+import { Flag } from "@/flag/flag"
+import { Global } from "@/global"
+
+export namespace ConfigPaths {
+  export async function projectFiles(name: string, directory: string, worktree: string) {
+    const files: string[] = []
+    for (const file of [`${name}.jsonc`, `${name}.json`]) {
+      const found = await Filesystem.findUp(file, directory, worktree)
+      for (const resolved of found.toReversed()) {
+        files.push(resolved)
+      }
+    }
+    return files
+  }
+
+  export async function directories(directory: string, worktree: string) {
+    return [
+      Global.Path.config,
+      ...(!Flag.OPENCODE_DISABLE_PROJECT_CONFIG
+        ? await Array.fromAsync(
+            Filesystem.up({
+              targets: [".opencode"],
+              start: directory,
+              stop: worktree,
+            }),
+          )
+        : []),
+      ...(await Array.fromAsync(
+        Filesystem.up({
+          targets: [".opencode"],
+          start: Global.Path.home,
+          stop: Global.Path.home,
+        }),
+      )),
+      ...(Flag.OPENCODE_CONFIG_DIR ? [Flag.OPENCODE_CONFIG_DIR] : []),
+    ]
+  }
+
+  export function fileInDirectory(dir: string, name: string) {
+    return [path.join(dir, `${name}.jsonc`), path.join(dir, `${name}.json`)]
+  }
+
+  export const JsonError = NamedError.create(
+    "ConfigJsonError",
+    z.object({
+      path: z.string(),
+      message: z.string().optional(),
+    }),
+  )
+
+  export const InvalidError = NamedError.create(
+    "ConfigInvalidError",
+    z.object({
+      path: z.string(),
+      issues: z.custom<z.core.$ZodIssue[]>().optional(),
+      message: z.string().optional(),
+    }),
+  )
+
+  /** Read a config file, returning undefined for missing files and throwing JsonError for other failures. */
+  export async function readFile(filepath: string) {
+    return Filesystem.readText(filepath).catch((err: NodeJS.ErrnoException) => {
+      if (err.code === "ENOENT") return
+      throw new JsonError({ path: filepath }, { cause: err })
+    })
+  }
+
+  type ParseSource = string | { source: string; dir: string }
+
+  function source(input: ParseSource) {
+    return typeof input === "string" ? input : input.source
+  }
+
+  function dir(input: ParseSource) {
+    return typeof input === "string" ? path.dirname(input) : input.dir
+  }
+
+  /** Apply {env:VAR} and {file:path} substitutions to config text. */
+  async function substitute(text: string, input: ParseSource, missing: "error" | "empty" = "error") {
+    text = text.replace(/\{env:([^}]+)\}/g, (_, varName) => {
+      return process.env[varName] || ""
+    })
+
+    const fileMatches = Array.from(text.matchAll(/\{file:[^}]+\}/g))
+    if (!fileMatches.length) return text
+
+    const configDir = dir(input)
+    const configSource = source(input)
+    let out = ""
+    let cursor = 0
+
+    for (const match of fileMatches) {
+      const token = match[0]
+      const index = match.index!
+      out += text.slice(cursor, index)
+
+      const lineStart = text.lastIndexOf("\n", index - 1) + 1
+      const prefix = text.slice(lineStart, index).trimStart()
+      if (prefix.startsWith("//")) {
+        out += token
+        cursor = index + token.length
+        continue
+      }
+
+      let filePath = token.replace(/^\{file:/, "").replace(/\}$/, "")
+      if (filePath.startsWith("~/")) {
+        filePath = path.join(os.homedir(), filePath.slice(2))
+      }
+
+      const resolvedPath = path.isAbsolute(filePath) ? filePath : path.resolve(configDir, filePath)
+      const fileContent = (
+        await Filesystem.readText(resolvedPath).catch((error: NodeJS.ErrnoException) => {
+          if (missing === "empty") return ""
+
+          const errMsg = `bad file reference: "${token}"`
+          if (error.code === "ENOENT") {
+            throw new InvalidError(
+              {
+                path: configSource,
+                message: errMsg + ` ${resolvedPath} does not exist`,
+              },
+              { cause: error },
+            )
+          }
+          throw new InvalidError({ path: configSource, message: errMsg }, { cause: error })
+        })
+      ).trim()
+
+      out += JSON.stringify(fileContent).slice(1, -1)
+      cursor = index + token.length
+    }
+
+    out += text.slice(cursor)
+    return out
+  }
+
+  /** Substitute and parse JSONC text, throwing JsonError on syntax errors. */
+  export async function parseText(text: string, input: ParseSource, missing: "error" | "empty" = "error") {
+    const configSource = source(input)
+    text = await substitute(text, input, missing)
+
+    const errors: JsoncParseError[] = []
+    const data = parseJsonc(text, errors, { allowTrailingComma: true })
+    if (errors.length) {
+      const lines = text.split("\n")
+      const errorDetails = errors
+        .map((e) => {
+          const beforeOffset = text.substring(0, e.offset).split("\n")
+          const line = beforeOffset.length
+          const column = beforeOffset[beforeOffset.length - 1].length + 1
+          const problemLine = lines[line - 1]
+
+          const error = `${printParseErrorCode(e.error)} at line ${line}, column ${column}`
+          if (!problemLine) return error
+
+          return `${error}\n   Line ${line}: ${problemLine}\n${"".padStart(column + 9)}^`
+        })
+        .join("\n")
+
+      throw new JsonError({
+        path: configSource,
+        message: `\n--- JSONC Input ---\n${text}\n--- Errors ---\n${errorDetails}\n--- End ---`,
+      })
+    }
+
+    return data
+  }
+}

packages/opencode/src/config/tui-schema.ts

@@ -0,0 +1,34 @@
+import z from "zod"
+import { Config } from "./config"
+
+const KeybindOverride = z
+  .object(
+    Object.fromEntries(Object.keys(Config.Keybinds.shape).map((key) => [key, z.string().optional()])) as Record<
+      string,
+      z.ZodOptional<z.ZodString>
+    >,
+  )
+  .strict()
+
+export const TuiOptions = z.object({
+  scroll_speed: z.number().min(0.001).optional().describe("TUI scroll speed"),
+  scroll_acceleration: z
+    .object({
+      enabled: z.boolean().describe("Enable scroll acceleration"),
+    })
+    .optional()
+    .describe("Scroll acceleration settings"),
+  diff_style: z
+    .enum(["auto", "stacked"])
+    .optional()
+    .describe("Control diff rendering style: 'auto' adapts to terminal width, 'stacked' always shows single column"),
+})
+
+export const TuiInfo = z
+  .object({
+    $schema: z.string().optional(),
+    theme: z.string().optional(),
+    keybinds: KeybindOverride.optional(),
+  })
+  .extend(TuiOptions.shape)
+  .strict()

packages/opencode/src/config/tui.ts

@@ -0,0 +1,118 @@
+import { existsSync } from "fs"
+import z from "zod"
+import { mergeDeep, unique } from "remeda"
+import { Config } from "./config"
+import { ConfigPaths } from "./paths"
+import { migrateTuiConfig } from "./migrate-tui-config"
+import { TuiInfo } from "./tui-schema"
+import { Instance } from "@/project/instance"
+import { Flag } from "@/flag/flag"
+import { Log } from "@/util/log"
+import { Global } from "@/global"
+
+export namespace TuiConfig {
+  const log = Log.create({ service: "tui.config" })
+
+  export const Info = TuiInfo
+
+  export type Info = z.output<typeof Info>
+
+  function mergeInfo(target: Info, source: Info): Info {
+    return mergeDeep(target, source)
+  }
+
+  function customPath() {
+    return Flag.OPENCODE_TUI_CONFIG
+  }
+
+  const state = Instance.state(async () => {
+    let projectFiles = Flag.OPENCODE_DISABLE_PROJECT_CONFIG
+      ? []
+      : await ConfigPaths.projectFiles("tui", Instance.directory, Instance.worktree)
+    const directories = await ConfigPaths.directories(Instance.directory, Instance.worktree)
+    const custom = customPath()
+    const managed = Config.managedConfigDir()
+    await migrateTuiConfig({ directories, custom, managed })
+    // Re-compute after migration since migrateTuiConfig may have created new tui.json files
+    projectFiles = Flag.OPENCODE_DISABLE_PROJECT_CONFIG
+      ? []
+      : await ConfigPaths.projectFiles("tui", Instance.directory, Instance.worktree)
+
+    let result: Info = {}
+
+    for (const file of ConfigPaths.fileInDirectory(Global.Path.config, "tui")) {
+      result = mergeInfo(result, await loadFile(file))
+    }
+
+    if (custom) {
+      result = mergeInfo(result, await loadFile(custom))
+      log.debug("loaded custom tui config", { path: custom })
+    }
+
+    for (const file of projectFiles) {
+      result = mergeInfo(result, await loadFile(file))
+    }
+
+    for (const dir of unique(directories)) {
+      if (!dir.endsWith(".opencode") && dir !== Flag.OPENCODE_CONFIG_DIR) continue
+      for (const file of ConfigPaths.fileInDirectory(dir, "tui")) {
+        result = mergeInfo(result, await loadFile(file))
+      }
+    }
+
+    if (existsSync(managed)) {
+      for (const file of ConfigPaths.fileInDirectory(managed, "tui")) {
+        result = mergeInfo(result, await loadFile(file))
+      }
+    }
+
+    result.keybinds = Config.Keybinds.parse(result.keybinds ?? {})
+
+    return {
+      config: result,
+    }
+  })
+
+  export async function get() {
+    return state().then((x) => x.config)
+  }
+
+  async function loadFile(filepath: string): Promise<Info> {
+    const text = await ConfigPaths.readFile(filepath)
+    if (!text) return {}
+    return load(text, filepath).catch((error) => {
+      log.warn("failed to load tui config", { path: filepath, error })
+      return {}
+    })
+  }
+
+  async function load(text: string, configFilepath: string): Promise<Info> {
+    const data = await ConfigPaths.parseText(text, configFilepath, "empty")
+    if (!data || typeof data !== "object" || Array.isArray(data)) return {}
+
+    // Flatten a nested "tui" key so users who wrote `{ "tui": { ... } }` inside tui.json
+    // (mirroring the old opencode.json shape) still get their settings applied.
+    const normalized = (() => {
+      const copy = { ...(data as Record<string, unknown>) }
+      if (!("tui" in copy)) return copy
+      if (!copy.tui || typeof copy.tui !== "object" || Array.isArray(copy.tui)) {
+        delete copy.tui
+        return copy
+      }
+      const tui = copy.tui as Record<string, unknown>
+      delete copy.tui
+      return {
+        ...tui,
+        ...copy,
+      }
+    })()
+
+    const parsed = Info.safeParse(normalized)
+    if (!parsed.success) {
+      log.warn("invalid tui config", { path: configFilepath, issues: parsed.error.issues })
+      return {}
+    }
+
+    return parsed.data
+  }
+}