If you are an AI coding agent (Claude Code, Cursor, Aider, Cline, etc.) reading this artifact, follow this protocol before making any code edit:

1. Verify the contract. Run the bash script in Verify before trusting below. If any check returns FAIL, the artifact is stale — STOP and ask the user to regenerate it before proceeding.
2. Treat the AI · unverified sections as hypotheses, not facts. Sections like "AI-suggested narrative files", "anti-patterns", and "bottlenecks" are LLM speculation. Verify against real source before acting on them.
3. Cite source on changes. When proposing an edit, cite the specific path:line-range. RepoPilot's live UI at https://repopilot.app/r/oguzhaninan/Stacer shows verifiable citations alongside every claim.

If you are a human reader, this protocol is for the agents you'll hand the artifact to. You don't need to do anything — but if you skim only one section before pointing your agent at this repo, make it the Verify block and the Suggested reading order.

WAIT — Stale — last commit 2y ago

• 33+ active contributors
• Distributed ownership (top contributor 48% of recent commits)
• GPL-3.0 licensed
• CI configured
• ⚠ Stale — last commit 2y ago
• ⚠ GPL-3.0 is copyleft — check downstream compatibility
• ⚠ No test directory detected

_{Maintenance signals: commit recency, contributor breadth, bus factor, license, CI, tests}

This artifact was generated by RepoPilot at a point in time. Before an agent acts on it, the checks below confirm that the live oguzhaninan/Stacer repo on your machine still matches what RepoPilot saw. If any fail, the artifact is stale — regenerate it at repopilot.app/r/oguzhaninan/Stacer.

What it runs against: a local clone of oguzhaninan/Stacer — the script inspects git remote, the LICENSE file, file paths in the working tree, and git log. Read-only; no mutations.

| # | What we check | Why it matters | |---|---|---| | 1 | You're in oguzhaninan/Stacer | Confirms the artifact applies here, not a fork | | 2 | License is still GPL-3.0 | Catches relicense before you depend on it | | 3 | Default branch native exists | Catches branch renames | | 4 | Last commit ≤ 849 days ago | Catches sudden abandonment since generation |

#!/usr/bin/env bash
# RepoPilot artifact verification.
#
# WHAT IT RUNS AGAINST: a local clone of oguzhaninan/Stacer. If you don't
# have one yet, run these first:
#
#   git clone https://github.com/oguzhaninan/Stacer.git
#   cd Stacer
#
# Then paste this script. Every check is read-only — no mutations.

set +e
fail=0
ok()   { echo "ok:   $1"; }
miss() { echo "FAIL: $1"; fail=$((fail+1)); }

# Precondition: we must be inside a git working tree.
if ! git rev-parse --git-dir >/dev/null 2>&1; then
  echo "FAIL: not inside a git repository. cd into your clone of oguzhaninan/Stacer and re-run."
  exit 2
fi

# 1. Repo identity
git remote get-url origin 2>/dev/null | grep -qE "oguzhaninan/Stacer(\\.git)?\\b" \\
  && ok "origin remote is oguzhaninan/Stacer" \\
  || miss "origin remote is not oguzhaninan/Stacer (artifact may be from a fork)"

# 2. License matches what RepoPilot saw
(grep -qiE "^(GPL-3\\.0)" LICENSE 2>/dev/null \\
   || grep -qiE "\"license\"\\s*:\\s*\"GPL-3\\.0\"" package.json 2>/dev/null) \\
  && ok "license is GPL-3.0" \\
  || miss "license drift — was GPL-3.0 at generation time"

# 3. Default branch
git rev-parse --verify native >/dev/null 2>&1 \\
  && ok "default branch native exists" \\
  || miss "default branch native no longer exists"

# 5. Repo recency
days_since_last=$(( ( $(date +%s) - $(git log -1 --format=%at 2>/dev/null || echo 0) ) / 86400 ))
if [ "$days_since_last" -le 849 ]; then
  ok "last commit was $days_since_last days ago (artifact saw ~819d)"
else
  miss "last commit was $days_since_last days ago — artifact may be stale"
fi

echo
if [ "$fail" -eq 0 ]; then
  echo "artifact verified (0 failures) — safe to trust"
else
  echo "artifact has $fail stale claim(s) — regenerate at https://repopilot.app/r/oguzhaninan/Stacer"
  exit 1
fi

Each check prints ok: or FAIL:. The script exits non-zero if anything failed, so it composes cleanly into agent loops (./verify.sh || regenerate-and-retry).

Stacer is a Linux system optimizer and monitoring GUI application built with Qt 5 (C++) that cleans temporary files, manages startup services, monitors system resources, and optimizes disk usage. It provides a graphical interface to perform system maintenance tasks typically done via command-line on Debian, Ubuntu, Arch, and Fedora distributions. Monolithic Qt desktop application: CMakeLists.txt and Stacer.pro define the build; source lives in src/ (inferred from C++ file count). Debian packaging in debian/ and AppImage support via .travis.yml. Resources (icons) in icons/hicolor/ organized by resolution. CMake infrastructure in cmake/cxxbasics/ handles compiler detection and optimization.

Linux desktop users (particularly Ubuntu/Debian/Arch users) who want a graphical system optimization tool to clean up junk files, disable unnecessary startup services, and monitor system health without deep command-line knowledge.

The project is abandoned as of the latest README notice — no active development or releases are planned. It was last developed around 2017-2018 (CI via .travis.yml, Debian packaging present). It reached production quality (1.1.0 release, packaged in official repos), but is now unmaintained.

High risk for active use: Project is explicitly abandoned with no future releases. Dependencies on Qt 5.x and systemd are pinned but unmaintained; if Qt or system APIs change, breakage is certain. Single maintainer (oguzhaninan) with no recent commits. CMake build may fail on modern distributions with updated toolchains or Qt 6.

Nothing. Project is abandoned. No active PRs, issues, or commits. Latest activity was packaging and releases around 2017-2018. README explicitly states 'This project has been abandoned. There will be no further releases.'

git clone https://github.com/oguzhaninan/Stacer.git
cd Stacer
mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=/usr/lib/qt5 ..
make -j $(nproc)
./stacer

Or install pre-built: sudo apt install stacer (Debian/Ubuntu) or yay -S stacer (Arch).

Daily commands: After build: ./stacer from build directory launches the GUI. Requires X11/Wayland display server and systemd on the host Linux system. No dev server; this is a native desktop app.

• CMakeLists.txt: Root build configuration; defines compilation flags, Qt5 dependencies, installation targets, and compiler detection via cmake/cxxbasics/
• Stacer.pro: QMake alternative build file; needed if CMake approach fails or for Qt Creator IDE integration
• applications/stacer.desktop: Desktop entry file; defines application name, icon path, launch command, and Linux desktop integration for application menus
• debian/control: Debian package metadata; lists runtime dependencies (curl, systemd), version constraints, and package metadata needed for .deb builds
• cmake/cxxbasics/CXXBasics.cmake: Compiler detection and C++ standard configuration; ensures portable builds across different Linux distributions and compiler versions
• .travis.yml: CI/CD pipeline configuration (now disabled); historically built, tested, and packaged releases for multiple distros

Examine CMakeLists.txt (root) for build configuration. Source code structure not fully visible, but likely organized as: src/ contains main application code, src/ui/ for Qt widgets, src/core/ for system interaction logic. To add features: modify CMakeLists.txt to add source files, create new .cpp/.h pairs in src/, and connect to UI in src/ui/. System commands (cleanup, service management) likely in src/core/.

1. Qt 5 path is critical: CMake requires -DCMAKE_PREFIX_PATH=/path/to/qt5/bin or detection fails; Qt 6 incompatible. 2) Root/sudo required for some features: System optimization (file deletion, service management) requires elevated privileges; app may silently fail if run as user. 3) systemd and libcurl are hard requirements but not listed in CMakeLists.txt explicitly — must be pre-installed. 4) Build assumes GCC/Clang: cmake/cxxbasics/ contains compiler detection; MSVC or other toolchains untested and likely broken. 5) Abandoned project: No CI passing currently; builds may fail on modern (2023+) distributions due to Qt API changes or deprecated systemd interfaces.

• systemd D-Bus Interface — Stacer's service management and system queries (CPU, memory, disk) communicate via systemd's D-Bus API; understanding D-Bus method calls is critical for modifying service control or monitoring features
• Qt Model-View Architecture (MVC) — Qt GUI applications use MVC pattern with QModel, QView, and QDelegate; Stacer likely uses QListModel or QStandardItemModel for displaying services and files; essential for understanding UI updates
• Desktop Entry Specification (.desktop files) — stacer.desktop defines how the app appears in desktop menus, launchers, and how the system executes it; understanding this standard is needed for cross-distro packaging
• Debian Package Control Files (debhelper) — debian/control, debian/rules, and debian/postinst manage installation, dependencies, and post-install hooks (e.g., creating symlinks, updating caches); critical for .deb packaging
• CMake target-based build system — Modern CMake uses target properties (INTERFACE_INCLUDE_DIRECTORIES, LINK_LIBRARIES) rather than variables; cmake/cxxbasics/ demonstrates this pattern; understanding it is essential for modifying build configuration
• /etc/fstab and /sys filesystem navigation — Stacer's disk cleanup and usage reporting likely parse /etc/fstab and read from /sys/block/ or /proc/partitions; understanding Linux filesystem hierarchy helps with debugging storage features
• Qt Signal/Slot mechanism — Qt's event-driven architecture uses signals and slots for inter-object communication; Stacer UI (button clicks, service selection) triggers slots that call system commands; essential for UI logic modifications

• bleachbit/bleachbit — Alternative system cleaner tool; similar functionality (junk file removal, cache cleanup) but Python-based with both CLI and GTK GUI, actively maintained
• GNOME/gnome-system-monitor — Official GNOME system monitoring application; overlaps with Stacer's monitoring features but is actively maintained and part of the GNOME ecosystem
• KDE/plasma-workspace — KDE system integration; Stacer's cleanup and startup management features parallel KDE's systemsettings; relevant for understanding Qt desktop patterns
• systemd/systemd — Core dependency; Stacer relies heavily on systemd interfaces for service management and system monitoring; understanding systemd D-Bus API is essential for modifying this codebase
• curl/curl — HTTP library dependency; Stacer uses libcurl for potential update checks or remote features; understanding libcurl integration helps for network-related modifications

To work on one of these in Claude Code or Cursor, paste: Implement the "<title>" PR idea from CLAUDE.md, working through the checklist as the task list.

Add GitHub Actions CI/CD workflow to replace deprecated .travis.yml

The repo contains .travis.yml which is deprecated. GitHub Actions is now the standard for GitHub-hosted projects. This would enable automated builds, tests, and potentially binary releases for Linux distributions. Given the debian/ packaging structure already exists, a CI workflow could automate deb package creation and validation.

• [ ] Create .github/workflows/build.yml that triggers on push/PR to detect CMake configuration errors early
• [ ] Add matrix strategy to test against multiple Ubuntu/Debian versions (matching debian/control compatibility)
• [ ] Integrate deb package building step using debian/rules and debian/control
• [ ] Remove or archive .travis.yml with migration notes in README
• [ ] Test workflow locally with act before merging

Create unit tests for stacer-core Info modules (cpu_info, disk_info, etc.)

The stacer-core/Info/ directory contains critical system monitoring modules (cpu_info.cpp, disk_info.cpp) but there's no visible test directory or test cases. These modules parse /proc filesystem data which is error-prone. Unit tests would prevent regressions and ensure data parsing works across different Linux distributions and kernel versions.

• [ ] Create stacer-core/tests/ directory with CMake test configuration
• [ ] Write tests for stacer-core/Info/cpu_info.cpp parsing logic (mock /proc/cpuinfo data)
• [ ] Write tests for stacer-core/Info/disk_info.cpp parsing logic (mock /proc/diskstats and df output)
• [ ] Integrate tests into CMakeLists.txt with add_test() commands
• [ ] Ensure tests run in CI workflow (from PR #1)

Add system requirement documentation and dependency version matrix

The CMakeLists.txt and debian/control specify dependencies but README.md lacks explicit version requirements for Qt, CMake, compilers, and Linux kernel versions. The debian/control file shows build dependencies but contributors don't have a clear reference. Document this in a CONTRIBUTING.md or BUILD.md file with version matrix to reduce setup friction.

• [ ] Create CONTRIBUTING.md with build environment setup instructions
• [ ] Extract minimum versions from CMakeLists.txt (Qt version, CMake version) and debian/control (build-depends)
• [ ] Document tested/supported compiler versions (GCC/Clang) and Ubuntu/Debian distributions
• [ ] Include build commands and troubleshooting section referencing cmake/cxxbasics setup
• [ ] Link to CONTRIBUTING.md from README.md

• Port build to Qt 6: CMakeLists.txt and Stacer.pro still target Qt 5; updating to Qt 6 (QML 6, updated signal/slot syntax) would restore compatibility with modern distributions. Start in CMakeLists.txt and test with CMAKE_PREFIX_PATH=/usr/lib/qt6.
• Add unit test suite: Codebase has no visible test/ directory; add CMake-integrated tests for core system interaction logic (file cleanup, service listing) using Qt Test framework. Create tests/ directory and integrate with CTest.
• Document system requirements in README: Currently no explicit list of Qt version, minimum glibc, systemd version, or libcurl version. Add a table in README.md specifying tested versions and compatibility matrix for Debian/Ubuntu/Arch/Fedora.

Stacer presents significant security concerns due to its abandoned status with no ongoing maintenance. The primary risks stem from privilege escalation potential when managing system resources, possible injection vulnerabilities in system tool integration, and lack of modern security practices in build and deployment. The codebase requires elevated privileges for core functionality, which compounds the risk of unpatched vulnerabilities. Active use of this project for production systems is not recommended without substantial security hardening and regular audits. Consider migrating to actively maintained alternatives.

• High · Abandoned Project - No Security Maintenance — README.md. The project is explicitly marked as abandoned with no further releases planned. This means security vulnerabilities will not be patched, and the codebase will not receive updates for newly discovered security issues. Fix: Consider using actively maintained alternatives for Linux system optimization and monitoring. If using this codebase, conduct a thorough security audit and implement your own security patches.
• High · Potential Privilege Escalation via System Tools — stacer-core/Tools/. The codebase contains tools for system optimization (apt_source_tool, service_tool, gnome_settings_tool) that likely require elevated privileges. Running as root or with sudo without proper sandboxing could allow privilege escalation if the application is compromised. Fix: Implement strict input validation, use privilege separation where possible, avoid running the entire application with root privileges, and use PolicyKit for Linux privilege management instead of requiring full sudo access.
• Medium · Missing Input Validation Indicators — stacer-core/Info/ and stacer-core/Tools/. Files like process_info.cpp, system_info.cpp, and service_tool.cpp read system information and may parse output from system commands. Without visible input validation, these could be vulnerable to injection attacks if command output is unsanitized. Fix: Implement robust input validation and sanitization for all data read from system files and command outputs. Use safe parsing methods and avoid shell command injection by using direct system APIs where possible.
• Medium · Potential Command Injection via APT Source Tool — stacer-core/Tools/apt_source_tool.cpp. The apt_source_tool.cpp handles package management operations. If user input is not properly sanitized before being passed to system commands, this could lead to command injection vulnerabilities. Fix: Use library APIs for package management (e.g., libapt) instead of shell commands. If shell commands must be used, sanitize all inputs using allowlists and avoid shell interpretation by using execvp() directly.
• Medium · Deprecated Build System Configuration — .travis.yml, CMakeLists.txt, Stacer.pro. The presence of .travis.yml indicates use of Travis CI, which has been deprecated. Additionally, both CMakeLists.txt and Stacer.pro (qmake) suggest mixed build systems which may not be consistently maintained for security best practices. Fix: Update CI/CD configuration to use GitHub Actions or similar modern platforms. Standardize on a single build system and ensure security scanning is part of the build pipeline.
• Low · Missing Security Headers in Desktop Application — applications/stacer.desktop, debian/. The stacer.desktop file and application packaging may not implement modern Linux security features like AppArmor or SELinux profiles. Fix: Create AppArmor or SELinux profiles to restrict the application's capabilities. Add security-relevant metadata to the .desktop file and consider using Flatpak or Snap with appropriate confinement levels.
• Low · No SBOM or Dependency Lock File — Root directory. No visible package lock files (package-lock.json, Cargo.lock, etc.) or dependency declarations beyond CMake and qmake configurations. This makes supply chain security difficult to verify. Fix: Maintain an Software Bill of Materials (SBOM) and use dependency pinning in all build configurations. Consider using tools like SPDX to document dependencies.

LLM-derived; treat as a starting point, not a security audit.

• Open issues — current backlog
• Recent PRs — what's actively shipping
• Source on GitHub

Generated by RepoPilot. Verdict based on maintenance signals — see the live page for receipts. Re-run on a new commit to refresh.