fix(linux): align Hopper defaults and support docs

CONTRIBUTING.md

@@ -10,7 +10,7 @@ When adding or changing an MCP tool, follow the [tool design guide](docs/tool-de
 
 ## Development setup
 
-REA development requires Node.js 24.18.x and npm 11.16.x (pinned toolchain via `nvm use`; the supported runtime range is Node.js ^22.19 || ^24.11 || >=26, as the README badge states). Real-Hopper verification additionally requires either macOS 12+ or an officially supported Linux host (Ubuntu 24.04+, Fedora 41+, or 64-bit Arch) and an installed Hopper application. Linux demo verification uses its own private Xvfb display and does not require a desktop session. Run `nvm use` before installing dependencies.
+REA development requires Node.js 24.18.x and npm 11.16.x (pinned toolchain via `nvm use`; the supported runtime range is Node.js ^22.19 || ^24.11 || >=26, as the README badge states). Real-Hopper verification additionally requires either macOS 12+ or an officially supported Linux host (Ubuntu 24.04+, Fedora 41+, 64-bit Arch, or CachyOS) and an installed Hopper application. Linux demo verification uses its own private Xvfb display and does not require a desktop session. Run `nvm use` before installing dependencies.
 
 ```bash
 npm ci

README.md

@@ -157,7 +157,7 @@ external-tool prerequisites depend on the selected workflow; the native
 provider guides describe their supported platforms.
 
 - macOS 12 or newer
-- Ubuntu 24.04+, Fedora 41+, or 64-bit Arch Linux
+- Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, or CachyOS
 - Node.js 22.x (>=22.19), 24.x (>=24.11), or 26+
 - npm; REA does not require or install a particular npm version
 
@@ -183,7 +183,7 @@ On macOS, setup can install Hopper in `~/Applications` after approval. It verifi
 
 On supported Linux distributions, setup can install Hopper and its demo-session dependencies through your system package manager. You may see a system authorization prompt. Demo sessions use a private virtual display, leaving your desktop alone. See [Hopper installation](docs/installation.md#hopper) for download verification and platform details.
 
-The normal Linux launcher is `/opt/hopper/bin/Hopper`. If Hopper was installed elsewhere:
+REA prefers an executable `/opt/hopper/bin/Hopper` on Linux. If it is unavailable, REA automatically checks `~/.local/share/rea/hopper/bin/Hopper`. If Hopper was installed elsewhere:
 
 ```bash
 export HOPPER_LAUNCHER_PATH=/absolute/path/to/Hopper
@@ -193,12 +193,12 @@ rea doctor --json
 If doctor reports a missing analysis engine even though the file exists, inspect shared-library resolution with:
 
 ```bash
-ldd /opt/hopper/bin/Hopper | grep 'not found'
+ldd /absolute/path/to/Hopper | grep 'not found'
 ```
 
 Install the missing packages and rerun `rea setup`. The Linux demo needs Xvfb, Python 3, X11, and XTEST; approved setup installs these dependencies. If you use the curl installer, add `~/.local/bin` to your shell `PATH` when needed.
 
-REA defaults `HOPPER_LAUNCHER_PATH` to `/Applications/Hopper Disassembler.app/Contents/MacOS/hopper` on macOS and `/opt/hopper/bin/Hopper` on Linux. Explicit configuration always takes precedence.
+REA uses `/Applications/Hopper Disassembler.app/Contents/MacOS/hopper` by default on macOS. On Linux it prefers executable `/opt/hopper/bin/Hopper`, then executable `~/.local/share/rea/hopper/bin/Hopper`, and keeps `/opt/hopper/bin/Hopper` as the diagnostic fallback if neither exists. Explicit `HOPPER_LAUNCHER_PATH` configuration always takes precedence.
 
 ### Ghidra analysis provider
 

README_ar.md

@@ -138,7 +138,7 @@ rea setup
 ### المتطلبات
 
 - macOS 12 أو أحدث
-- Ubuntu 24.04+ أو Fedora 41+ أو Arch Linux بنواة 64 بت
+- Ubuntu 24.04+ أو Fedora 41+ أو Arch Linux بنواة 64 بت أو CachyOS
 - Node.js 22.x (>=22.19) أو 24.x (>=24.11) أو 26+ وnpm
 
 يتطلب تحليل الملفات التنفيذية الأصلية Hopper أو Ghidra. Hopper برنامج منفصل، وللوضع التجريبي قيود يحددها المورّد، لكن الترخيص المدفوع ليس إلزاميًا.
@@ -153,7 +153,7 @@ rea setup
 
 يشخّص `npx -y rea-agents@latest doctor` الجهاز والاعتماديات وأدوات التحليل وإعدادات الوكيل من دون تغييرها. أضف `--json` للحصول على تشخيص منظم.
 
-مسار Hopper الافتراضي على Linux هو `/opt/hopper/bin/Hopper`. استخدم `HOPPER_LAUNCHER_PATH` للمسارات الأخرى. إذا كان الملف موجودًا لكن محرك التحليل لا يظهر، فشغّل `ldd /opt/hopper/bin/Hopper | grep 'not found'` للتحقق من المكتبات الناقصة. راجع [دليل Hopper](docs/installation.md#hopper).
+على Linux، يفضّل REA الملف التنفيذي `/opt/hopper/bin/Hopper`، وإذا لم يكن متاحًا يتحقق تلقائيًا من `~/.local/share/rea/hopper/bin/Hopper`. استخدم `HOPPER_LAUNCHER_PATH` للمسارات الأخرى. إذا كان الملف موجودًا لكن محرك التحليل لا يظهر، فشغّل `ldd /absolute/path/to/Hopper | grep 'not found'` على مسار Hopper الفعلي للتحقق من المكتبات الناقصة. راجع [دليل Hopper](docs/installation.md#hopper).
 
 ### التحديث والإزالة
 
@@ -313,7 +313,7 @@ npx -y rea-agents@latest compare /absolute/path/to/left-evidence.json /absolute/
 <details>
 <summary><strong>هل يعمل REA على Linux أو Windows؟</strong></summary>
 
-يدعم REA نظام macOS 12+ وUbuntu 24.04+ وFedora 41+ وArch Linux بنواة 64 بت. يعمل تحليل Ghidra للقراءة فقط على Linux x64 وmacOS x64/arm64 مع Ghidra 12.1.x وJDK الكامل الذي يعلنه التثبيت (JDK 21 أو أحدث دون حد أعلى في إصدارات 12.1 الحالية)، إضافة إلى حد Windows x64 P0 التجريبي لتطبيقات PE الأصلية x86-64 على NTFS محلي؛ راجع [دليل Windows Ghidra P0](docs/windows-ghidra-p0.md) للنطاق الموثق.
+يدعم REA نظام macOS 12+ وUbuntu 24.04+ وFedora 41+ وArch Linux بنواة 64 بت وCachyOS. يعمل تحليل Ghidra للقراءة فقط على Linux x64 وmacOS x64/arm64 مع Ghidra 12.1.x وJDK الكامل الذي يعلنه التثبيت (JDK 21 أو أحدث دون حد أعلى في إصدارات 12.1 الحالية)، إضافة إلى حد Windows x64 P0 التجريبي لتطبيقات PE الأصلية x86-64 على NTFS محلي؛ راجع [دليل Windows Ghidra P0](docs/windows-ghidra-p0.md) للنطاق الموثق.
 
 </details>
 

README_ja.md

@@ -138,7 +138,7 @@ rea setup
 ### 要件
 
 - macOS 12 以降
-- Ubuntu 24.04+、Fedora 41+、または 64 ビット Arch Linux
+- Ubuntu 24.04+、Fedora 41+、64 ビット Arch Linux、または CachyOS
 - Node.js 22.x (>=22.19)、24.x (>=24.11)、または 26+ と npm
 
 ネイティブバイナリ解析には Hopper または Ghidra が必要です。Hopper は別製品です。デモにはベンダー所定の制限がありますが、有料ライセンスは必須ではありません。
@@ -153,7 +153,7 @@ Setup はインストールを確認し、パスを保存できます。Ghidra
 
 `npx -y rea-agents@latest doctor` はホスト、依存関係、解析ツール、エージェント設定を変更せずに確認します。構造化された診断には `--json` を追加してください。
 
-Linux の既定ランチャーは `/opt/hopper/bin/Hopper` です。別の場所には `HOPPER_LAUNCHER_PATH` を設定します。ファイルがあるのに解析エンジンが見つからない場合は、`ldd /opt/hopper/bin/Hopper | grep 'not found'` で不足ライブラリを確認してください。詳しくは [Hopper ガイド](docs/installation.md#hopper)を参照してください。
+Linux では実行可能な `/opt/hopper/bin/Hopper` を優先し、利用できない場合は `~/.local/share/rea/hopper/bin/Hopper` を自動的に確認します。それ以外の場所では `HOPPER_LAUNCHER_PATH` を設定します。ファイルがあるのに解析エンジンが見つからない場合は、実際の Hopper パスに対して `ldd /absolute/path/to/Hopper | grep 'not found'` を実行し、不足ライブラリを確認してください。詳しくは [Hopper ガイド](docs/installation.md#hopper)を参照してください。
 
 ### 更新とアンインストール
 

README_ko.md

@@ -139,7 +139,7 @@ rea setup
 ### 요구 사항
 
 - macOS 12 이상
-- Ubuntu 24.04+, Fedora 41+ 또는 64비트 Arch Linux
+- Ubuntu 24.04+, Fedora 41+, 64비트 Arch Linux 또는 CachyOS
 - Node.js 22.x (>=22.19), 24.x (>=24.11) 또는 26+와 npm
 
 네이티브 바이너리 분석에는 Hopper 또는 Ghidra가 필요합니다. Hopper는 별도 소프트웨어입니다. 데모에는 공급업체의 제한이 있지만 유료 라이선스가 필수는 아닙니다.
@@ -154,7 +154,7 @@ Setup은 설치를 확인하고 경로를 저장할 수 있습니다. Ghidra, Ja
 
 `npx -y rea-agents@latest doctor`는 호스트, 의존성, 분석 도구, 에이전트 설정을 변경 없이 확인합니다. 구조화된 진단에는 `--json`을 추가하세요.
 
-Linux의 기본 Hopper 실행 파일은 `/opt/hopper/bin/Hopper`입니다. 다른 위치에는 `HOPPER_LAUNCHER_PATH`를 설정하세요. 파일이 있는데도 분석 엔진이 없다고 하면 `ldd /opt/hopper/bin/Hopper | grep 'not found'`로 누락된 라이브러리를 확인하세요. 자세한 내용은 [Hopper 안내](docs/installation.md#hopper)를 참고하세요.
+Linux에서는 실행 가능한 `/opt/hopper/bin/Hopper`를 우선 사용하고, 사용할 수 없으면 `~/.local/share/rea/hopper/bin/Hopper`를 자동으로 확인합니다. 다른 위치에는 `HOPPER_LAUNCHER_PATH`를 설정하세요. 파일이 있는데도 분석 엔진이 없다고 하면 실제 Hopper 경로에 대해 `ldd /absolute/path/to/Hopper | grep 'not found'`를 실행해 누락된 라이브러리를 확인하세요. 자세한 내용은 [Hopper 안내](docs/installation.md#hopper)를 참고하세요.
 
 ### 업데이트와 제거
 

README_zh.md

@@ -138,7 +138,7 @@ rea setup
 ### 系统要求
 
 - macOS 12 或更高版本
-- Ubuntu 24.04+、Fedora 41+ 或 64 位 Arch Linux
+- Ubuntu 24.04+、Fedora 41+、64 位 Arch Linux 或 CachyOS
 - Node.js 22.x (>=22.19)、24.x (>=24.11) 或 26+，以及 npm
 
 原生二进制分析需要 Hopper 或 Ghidra。Hopper 是独立软件；演示模式有厂商规定的限制，不要求购买许可证。
@@ -153,7 +153,7 @@ Setup 可以验证安装并保存路径，不会安装或升级 Ghidra、Java、
 
 运行 `npx -y rea-agents@latest doctor`，检查主机、依赖、分析工具和智能体配置。该命令不会修改文件。添加 `--json` 可获取结构化诊断。
 
-Linux 上的默认 Hopper 启动器为 `/opt/hopper/bin/Hopper`。其他路径可通过 `HOPPER_LAUNCHER_PATH` 指定。如果文件存在但仍报告缺少分析引擎，运行 `ldd /opt/hopper/bin/Hopper | grep 'not found'` 检查缺少的系统库。安装详情见 [Hopper 指南](docs/installation.md#hopper)。
+Linux 上 REA 会优先使用可执行的 `/opt/hopper/bin/Hopper`；如果不可用，则自动检查 `~/.local/share/rea/hopper/bin/Hopper`。其他路径可通过 `HOPPER_LAUNCHER_PATH` 指定。如果文件存在但仍报告缺少分析引擎，请对实际 Hopper 路径运行 `ldd /absolute/path/to/Hopper | grep 'not found'` 检查缺少的系统库。安装详情见 [Hopper 指南](docs/installation.md#hopper)。
 
 ### 更新与卸载
 

docs/user-visible-errors.csv

@@ -56,7 +56,7 @@ harm_rank,location,trigger,current_copy,user_risk,proposed_replacement,implement
 46,src/application/Uninstall.ts:removeManagedPath symlink,Managed cache/state/skill path is a symbolic link,Refused to follow symlink {path}.,Exposes local path and does not explain manual safety check,"REA did not remove this item because its managed path is a symbolic link. Verify the link target before removing it manually.",implemented,focused assertion passed
 47,src/application/Uninstall.ts:removeManagedPath failure,Managed item removal fails,{path} could not be removed.,Exposes local path and gives no recovery,"This item could not be removed. Check file permissions, then rerun uninstall.",implemented,verified by injected managed-path removal failure test
 48,src/application/DoctorDiagnostics.ts:node,Runtime version is outside supported ranges,"Install Node.js 22.x (>=22.19), 24.x (>=24.11), or 26+.",Low risk; exact dependency recovery,Keep current copy,unchanged,verified by doctor unit test
-49,src/application/Doctor.ts:host,Host OS/distribution is unsupported,"REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, and 64-bit Arch Linux.",Low risk; clearly states supported choices,Keep current copy,unchanged,verified by doctor unit tests
+49,src/application/Doctor.ts:host,Host OS/distribution is unsupported,"REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, and CachyOS.",Low risk; clearly states supported choices,Keep current copy,unchanged,verified by doctor unit tests
 50,src/application/Doctor.ts:analysis engine,Optional deep-analysis executable cannot be found,"Run rea setup to install Hopper, or set HOPPER_LAUNCHER_PATH.",Low risk in setup-specific diagnostic; exact recovery paths,Keep current copy,unchanged,verified by doctor unit tests
 51,src/application/Doctor.ts:target,Optional target path fails shared validation,Supply a readable local app or program path.,Low risk; tells caller valid target class,Keep current copy,unchanged,verified by doctor unit test
 52,src/application/Setup.ts:approval,Setup plan lacks approval,"Review the setup plan, then rerun interactively or with --yes.",Low risk; exact authorization recovery,Keep current copy,unchanged,verified by setup unit tests
@@ -67,7 +67,7 @@ harm_rank,location,trigger,current_copy,user_risk,proposed_replacement,implement
 57,src/application/Setup.ts:unsupported platform,Platform is neither macOS nor Linux,REA supports Hopper on macOS and selected 64-bit Linux distributions.,Low risk; states support boundary,Keep current copy,unchanged,verified by setup unit test
 58,src/application/SetupHost.ts:unsupported Node,Runtime version cannot run setup,"Install Node.js 22.x (>=22.19), 24.x (>=24.11), or 26+ and rerun setup.",Low risk; exact dependency and retry,Keep current copy,unchanged,verified by setup host tests
 59,src/application/Setup.ts:unsupported macOS,macOS version is missing or older than 12,Upgrade to macOS 12 or newer.,Low risk; exact support floor,Keep current copy,unchanged,verified by setup host tests
-60,src/application/Setup.ts:unsupported Linux,Linux distribution is outside supported set,"REA supports Hopper on Ubuntu 24.04+, Fedora 41+, and 64-bit Arch Linux.",Low risk; exact supported alternatives,Keep current copy,unchanged,verified by setup unit test
+60,src/application/Setup.ts:unsupported Linux,Linux distribution is outside supported set,"REA supports Hopper on Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, and CachyOS.",Low risk; exact supported alternatives,Keep current copy,unchanged,verified by setup unit test
 61,src/application/ProcessCli.ts:readJson read,Process scenario or evidence file cannot be read,Raw filesystem exception through CLI framework,Can expose local paths/codes and no recovery,"Process input file could not be read. Check that the path exists and is readable.",implemented,verified by focused CLI test
 62,src/application/ProcessCli.ts:readJson size,Process scenario or evidence file exceeds 64 MiB,Process JSON input exceeds byte limit,Does not state limit or recovery,"Process input file is too large. Reduce it below 64 MiB, then try again.",implemented,verified by focused sparse-file CLI test
 63,src/application/ProcessCli.ts:readJson parse,Process scenario or evidence file is malformed JSON,Raw JSON parser exception through CLI framework,Can expose parser implementation and lacks recovery,"Process input file is not valid JSON. Repair the file, then try again.",implemented,verified by focused CLI test

src/application/Doctor.test.ts

@@ -22,7 +22,7 @@ describe("doctor", () => {
       ),
     ).toEqual({
       node: `Install ${SUPPORTED_NODE_VERSION_PROSE}.`,
-      host: "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, and the experimental Windows x64 Ghidra P0 boundary.",
+      host: "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, CachyOS, and the experimental Windows x64 Ghidra P0 boundary.",
       hopper: "Run rea setup to install Hopper, or set HOPPER_LAUNCHER_PATH.",
       target: "Supply a readable local app or program path.",
     });

src/application/DoctorDiagnostics.ts

@@ -115,7 +115,7 @@ const hostCheck = async (host: DoctorHost): Promise<DoctorCheck> => {
       : `${linuxDistribution.id} ${linuxDistribution.versionId ?? "unknown"}`);
   return check("host", supported, detail, {
     remediation:
-      "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, and the experimental Windows x64 Ghidra P0 boundary.",
+      "REA supports macOS 12+, Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, CachyOS, and the experimental Windows x64 Ghidra P0 boundary.",
     classification: "unsupported_host",
   });
 };

src/application/Setup.recovery.test.ts

@@ -194,7 +194,7 @@ describe("setup scoped readiness", () => {
     expect(result.status).toBe("needs_human");
     expect(host.hopperInstalls).toBe(0);
     expect(result.remediation).toBe(
-      "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, and 64-bit Arch Linux; configure an existing supported provider instead.",
+      "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, and CachyOS; configure an existing supported provider instead.",
     );
   });
 

src/application/SetupHost.ts

@@ -82,7 +82,7 @@ export const hostRemediation = async (
       : undefined;
   }
   if ((await host.linuxDistribution())?.supported === true) return undefined;
-  return "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, and 64-bit Arch Linux; configure an existing supported provider instead.";
+  return "Automated Hopper setup supports Ubuntu 24.04+, Fedora 41+, 64-bit Arch Linux, and CachyOS; configure an existing supported provider instead.";
 };
 
 /** Production setup effects for Hopper, agent configuration, and the canonical skill directory. */

src/config.test.ts

@@ -3,7 +3,7 @@ import { describe, expect, it } from "vitest";
 import { parseConfig } from "./config.js";
 
 describe("runtime configuration", () => {
-  it("allows target-free startup and defaults to Hopper's documented launcher", () => {
+  it("allows target-free startup and applies runtime defaults", () => {
     const empty = parseConfig({});
     expect(empty.ok).toBe(true);
     if (empty.ok) {
@@ -13,11 +13,6 @@ describe("runtime configuration", () => {
     const result = parseConfig({ HOPPER_TARGET_PATH: "/usr/bin/true" });
     expect(result.ok).toBe(true);
     if (result.ok) {
-      expect(result.value.hopperLauncherPath).toBe(
-        process.platform === "linux"
-          ? "/opt/hopper/bin/Hopper"
-          : "/Applications/Hopper Disassembler.app/Contents/MacOS/hopper",
-      );
       expect(result.value.hopperTargetKind).toBe("executable");
       expect(result.value.hopperLoaderArgs).toEqual([]);
       expect(result.value.logLevel).toBe("info");

tests/conformance/readmeConsistency.test.ts

@@ -45,6 +45,7 @@ describe("localized README product facts", () => {
       expect(content).toContain("Ubuntu 24.04");
       expect(content).toContain("Fedora 41");
       expect(content).toContain("Arch Linux");
+      expect(content).toContain("CachyOS");
       for (const client of SUPPORTED_CLIENT_DEFINITIONS)
         expect(content).toContain(client.displayName);
       expect(content).toContain("MCP-tool_catalog");