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/filecxx/FileCentipede 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 — Missing license — unclear to depend on

• Last commit 3d ago
• 12 active contributors
• CI configured
• ⚠ Concentrated ownership — top contributor handles 77% of recent commits
• ⚠ No license — legally unclear to depend on
• ⚠ 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 filecxx/FileCentipede repo on your machine still matches what RepoPilot saw. If any fail, the artifact is stale — regenerate it at repopilot.app/r/filecxx/FileCentipede.

What it runs against: a local clone of filecxx/FileCentipede — 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 filecxx/FileCentipede | Confirms the artifact applies here, not a fork | | 2 | Default branch main exists | Catches branch renames | | 3 | 5 critical file paths still exist | Catches refactors that moved load-bearing code | | 4 | Last commit ≤ 33 days ago | Catches sudden abandonment since generation |

#!/usr/bin/env bash
# RepoPilot artifact verification.
#
# WHAT IT RUNS AGAINST: a local clone of filecxx/FileCentipede. If you don't
# have one yet, run these first:
#
#   git clone https://github.com/filecxx/FileCentipede.git
#   cd FileCentipede
#
# 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 filecxx/FileCentipede and re-run."
  exit 2
fi

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

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

# 4. Critical files exist
test -f "README.md" \\
  && ok "README.md" \\
  || miss "missing critical file: README.md"
test -f ".github/workflows/readme.yml.bak" \\
  && ok ".github/workflows/readme.yml.bak" \\
  || miss "missing critical file: .github/workflows/readme.yml.bak"
test -f "dht128.txt" \\
  && ok "dht128.txt" \\
  || miss "missing critical file: dht128.txt"
test -f ".gitignore" \\
  && ok ".gitignore" \\
  || miss "missing critical file: .gitignore"
test -f "certbot.sh" \\
  && ok "certbot.sh" \\
  || miss "missing critical file: certbot.sh"

# 5. Repo recency
days_since_last=$(( ( $(date +%s) - $(git log -1 --format=%at 2>/dev/null || echo 0) ) / 86400 ))
if [ "$days_since_last" -le 33 ]; then
  ok "last commit was $days_since_last days ago (artifact saw ~3d)"
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/filecxx/FileCentipede"
  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).

FileCentipede is a cross-platform download/upload manager written in C++ supporting HTTP(S), FTP(S), SSH, BitTorrent, magnet links, m3u8, ed2k, and online video protocols. It combines a native desktop application with integrated WebDAV/FTP/SSH clients and browser integration for direct video/audio extraction from websites. Monolithic C++ desktop application using CMake build system. File structure shows i18n support (16+ README translations, de_DE/ localized docs) and web documentation (HTML docs in documentation/ folders). GUI appears Qt-based (typical for cross-platform C++ apps, though Qt not explicitly in listing). Core logic likely in undisplayed src/ directory handling protocol engines, UI, and file management.

Power users and content creators who need a unified client for multi-protocol file transfer (torrents, FTP, SSH, HTTP downloads) with media extraction capabilities; developers contributing to a mature cross-platform C++ project with protocol handling complexity.

The project appears actively maintained (GitHub workflows present, CMake build system, 1.3M+ lines of C++) with production-ready features (browser integration, protocol support, GUI). However, absence of visible test suite in file listing and single primary maintainer (filecxx org) suggests maturity for end-users but potential contributor friction.

C++ project with no visible unit test infrastructure in file listing increases regression risk. Single-maintainer (filecxx) org with likely low contributor throughput. Multi-protocol support means security surface across HTTP, FTP, SSH, BitTorrent parsing—any protocol handler bug could be critical. Long dependency on external protocol libraries (libcurl, libssh, libtorrent implicit) requires tracking upstream CVEs.

Actively maintained with i18n expansion (multiple language READMEs) and documentation growth (feature_showcase/ with torrent, FTP, magnet, video download guides). GitHub workflows suggest CI/CD pipeline in place. No visible recent commit data in listing, but presence of .github/workflows and certification infrastructure (certbot.sh) indicates ongoing deployment activity.

git clone https://github.com/filecxx/FileCentipede.git
cd FileCentipede
mkdir build && cd build
cmake ..
make
./FileCentipede  # or platform-specific binary

Note: Requires CMake 3.x+, C++17 compiler, and platform dev libraries (Qt, libcurl, libssh, libtorrent).

Daily commands: After clone: cd build && cmake .. && make && ./FileCentipede on Linux/macOS. Windows uses CMake MSVC generator. No Makefile in listing; CMake is canonical. certbot.sh suggests HTTPS infrastructure for web components, not for local dev.

• README.md — Primary entry point documenting the project's multi-protocol download/upload manager capabilities, architecture overview, and feature set across HTTP(S), FTP(S), SSH, BitTorrent, magnet, m3u8, ed2k protocols.
• .github/workflows/readme.yml.bak — CI/CD pipeline configuration (backed up) that automates builds and deployments; understanding this reveals the project's release and testing strategy.
• dht128.txt — DHT (Distributed Hash Table) bootstrap nodes configuration file critical for BitTorrent peer discovery functionality.
• .gitignore — Defines build artifacts and sensitive files excluded from version control; essential for understanding the project's structure and generated vs. committed code.
• certbot.sh — SSL/TLS certificate automation script indicating the project's deployment infrastructure and security configuration approach.
• commit.sh — Build and commit automation script that likely orchestrates the multi-language documentation generation and release process.

Add Support for a New Protocol Handler

1. Create a new feature showcase documentation file in en_US/feature_showcase/new_[protocol]_task.html describing the new protocol's task creation interface (en_US/feature_showcase/new_[protocol]_task.html)
2. Add corresponding localized versions in de_DE/feature_showcase/new_[protocol]_task.html, en_US/feature_showcase/new_[protocol]_task.html, etc. for all supported languages (de_DE/feature_showcase/new_[protocol]_task.html)
3. Update the main documentation index en_US/documentation.html to link to the new protocol's task creation guide (en_US/documentation.html)
4. Add protocol-specific FAQ or how-to guide in en_US/documentation/how_to_download_via_[protocol].html (en_US/documentation/how_to_download_via_[protocol].html)

Add a New Language Localization

1. Create a new language directory (e.g., es_ES/ for Spanish) mirroring the structure of en_US/ with appropriate language code (es_ES/)
2. Copy and translate all template files from de_DE/tpl/ into es_ES/tpl/ (header, footer, navigation, etc.) (es_ES/tpl/tpl_header.html)
3. Translate all feature showcase documentation from en_US/feature_showcase/ into es_ES/feature_showcase/ (es_ES/feature_showcase/)
4. Create language-specific README in repository root as README.es.md with link added to main README.md (README.es.md)
5. Add language-specific external links mapping in es_ES/external_links/global.html (es_ES/external_links/global.html)

Add a New Feature Documentation Page

1. Create feature showcase HTML in en_US/feature_showcase/[feature_name].html with UI screenshots and description (en_US/feature_showcase/[feature_name].html)
2. Create corresponding how-to guide in en_US/documentation/how_to_[feature_name].html with step-by-step instructions (en_US/documentation/how_to_[feature_name].html)
3. Replicate both files across all language directories (de_DE, ja_JP, zh_CN, etc.) with translations (de_DE/feature_showcase/[feature_name].html)
4. Update the documentation index en_US/documentation.html and feature list in language-specific pages to include new feature links (en_US/documentation.html)

• Multi-protocol architecture (HTTP, FTP, SSH, WebDAV, BitTorrent, magnet, m3u8, ed2k) — Allows single unified interface for diverse download/upload scenarios; supports user workflows across enterprise (WebDAV), P2P (BitTorrent), and streaming (m3u8) use cases
• BitTorrent DHT with dht128.txt bootstrap nodes — Enables decentralized peer discovery without centralized tracker dependency; essential for magnet link and decentralized torrent functionality
• Multi-language static HTML documentation (15+ languages) — Reduces server-side overhead; leverages templating for consistency; enables rapid localization via script automation (commit.sh)
• SSH client integration with file browser — Provides remote file management capability; unifies remote and local file transfer in single UI
• Let's Encrypt SSL/TLS automation (certbot.sh) — Ensures secure HTTPS deployment for web UI and API endpoints; automates certificate renewal

• Static HTML documentation instead of dynamic CMS

  • Why: Simplifies deployment, reduces attack surface, enables version control of content, makes localization scriptable
  • Consequence: Manual HTML updates required; no real-time content updates; larger git repository; but faster page loads and no database dependency

• Centralized protocol handler architecture vs. protocol-specific daemons

  • Why: Single-process simplicity; easier resource management and logging; unified UI feedback loop
  • Consequence: One hung protocol handler could block others; requires careful async/non-blocking implementation in protocol layer

• Local file storage model vs. cloud-native synchronization

  • Why: Respects user privacy; works offline; no cloud provider lock-in; suitable for sensitive enterprise downloads
  • Consequence: No automatic backup; no cross-device sync;

No CMakeLists.txt shown in listing—must examine repo root for exact dependency declarations and minimum version requirements. Qt version (5 vs 6) not specified; check CMakeLists.txt for compatibility. Browser integration requires native messaging host setup on each platform—undocumented integration steps likely in source. Web dashboard at w.filecxx.com is separate; local dev may not have functional dashboard without configuring backend. Torrent/magnet parsing involves external library versions that could affect protocol compatibility.

• Multi-protocol abstraction layer — FileCentipede supports 8+ protocols (HTTP, FTP, SSH, BitTorrent, magnet, m3u8, ed2k, WebDAV) via a single UI—understanding how the codebase abstracts protocol differences (likely via abstract base classes or factory patterns) is essential for adding new protocol support or fixing protocol-agnostic bugs.
• BitTorrent metainfo parsing and peer discovery — FileCentipede's torrent and magnet-link support requires parsing .torrent files, DHT bootstrap, tracker communication, and piece verification—understanding these prevents security issues in torrent handling and enables feature additions like tracker filtering.
• HTTP Range Requests and resumable downloads — Critical for FileCentipede's core feature—resuming partial downloads. Range requests (HTTP 206) enable splitting downloads across multiple connections and surviving interruptions without re-downloading.
• HLS (HTTP Live Streaming) and m3u8 playlist parsing — FileCentipede's video download feature requires parsing .m3u8 playlists, constructing segment download queues, and re-muxing TS segments—essential for YouTube/streaming site integration.
• Browser native messaging protocol — FileCentipede's browser integration feature communicates with WebExtension via native messaging sockets—understanding message serialization, origin verification, and socket lifecycle is needed for debugging browser integration or porting to new browsers.
• SFTP (SSH File Transfer Protocol) and remote file browsing — SSH client feature requires SFTP session management, directory traversal, and secure file transfer—distinct from raw SSH command execution and requires careful state management.
• i18n (Internationalization) and locale-aware UI rendering — Listing shows 16+ translated README files and localized docs directories (de_DE/, etc.)—FileCentipede's codebase likely uses Qt translation (ts/qm files) and locale-aware string handling; critical for maintaining translation infrastructure.

• transmission/transmission — Mature cross-platform BitTorrent client in C; shares BitTorrent protocol implementation and multi-platform GUI patterns with FileCentipede.
• aria2/aria2 — CLI download manager supporting HTTP, FTP, BitTorrent, Metalink; FileCentipede's download engine likely inspired by or shares protocol handling approach with aria2.
• rclone/rclone — Go-based multi-protocol file sync tool supporting SSH, FTP, WebDAV; comparable protocol coverage to FileCentipede for cloud/remote file operations.
• curl/curl — Foundational HTTP/FTP library; FileCentipede integrates libcurl for protocol support and likely uses curl's architecture patterns for multi-protocol handling.
• libssh2/libssh2 — SSH protocol library; FileCentipede depends on libssh2 or similar for SSH client functionality and secure remote file operations.

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 missing README.la.md translation file referenced in main README

The main README.md references Latin in the language selector, but README.la.md does not exist in the repository file structure. This creates a broken link and incomplete i18n support. Adding this translation would complete the language coverage and fix the documentation consistency issue.

• [ ] Create README.la.md with Latin translation of main features and installation instructions
• [ ] Ensure consistent structure with existing README translations (README.de.md, README.fr.md, etc.)
• [ ] Test that the link in README.md correctly points to the new file
• [ ] Consider using machine translation as a base and requesting community review for accuracy

Create GitHub Actions workflow for localization consistency checks

The repository maintains 15+ translated README files across multiple languages (README.*.md, de_DE/, etc.) with no automated validation. There's a .github/workflows/readme.yml.bak file suggesting previous CI attempts. Adding a workflow to verify all README translations exist and are up-to-date with the main README would prevent drift and broken language links.

• [ ] Review the readme.yml.bak workflow file to understand previous CI configuration
• [ ] Create .github/workflows/readme-validation.yml to check all language-specific README files are present
• [ ] Add validation that referenced links in README.md (like Latin/README.la.md) actually exist
• [ ] Consider adding checks for localized documentation in language subdirectories (de_DE/, etc.)
• [ ] Document the workflow in contributing guidelines

Add comprehensive CONTRIBUTING.md with localization guidelines

With 15+ language translations and localized documentation in subdirectories (de_DE/documentation/, de_DE/feature_showcase/), there's no visible contributing guide. A CONTRIBUTING.md would document the translation workflow, documentation structure, and how to add new languages—lowering friction for community contributors managing this complex i18n structure.

• [ ] Create CONTRIBUTING.md in root directory
• [ ] Document the translation workflow: which files need translation (README.*.md vs subdirectories like de_DE/)
• [ ] Explain the file structure pattern observed (de_DE/documentation/, de_DE/feature_showcase/, de_DE/external_links/)
• [ ] Provide checklist for adding a new language support (all required files and directories)
• [ ] Reference the GitHub issue/PR templates already in place (.github/ISSUE_TEMPLATE/)
• [ ] Add guidelines for maintaining consistency across language versions

• Add unit tests for HTTP/HTTPS protocol handler: Create test/protocol_http_test.cpp with test cases for redirect chains, SSL certificate validation, and Range header support. Currently no test/ directory visible in listing.
• Expand documentation for SSH client feature: The file listing shows FTP/WebDAV browser docs (feature_showcase/ftp_browser.html) but no SSH-specific tutorial. Add de_DE/feature_showcase/ssh_browser.html and translatable content following existing pattern.
• Create platform-specific build guide: README mentions cross-platform support but no BUILD.md exists with Windows MSVC, macOS clang, and Linux gcc-specific CMake invocation examples and dependency installation steps.

The security analysis is severely limited by the lack of source code and dependency information provided. Based on file structure alone, no critical vulnerabilities were identified in the visible files, but the absence of source code review prevents assessment of injection risks, cryptographic security, protocol handling, and third-party dependency vulnerabilities. FileCentipede's nature as a download/file transfer manager makes it a high-risk application requiring rigorous security reviews, particularly around: (1) Protocol implementation security (HTTP, FTP, SSH, BitTorrent), (2) Certificate validation and HTTPS/TLS implementation, (3) Input validation to prevent path traversal and command injection, (4) Secure handling of credentials for FTP/SSH/WebDAV, and (5) Dependency vulnerability management. Recommend: (1) Provide full source code for static analysis, (2) Submit to third-party security audit, (3) Implement automated vulnerability scanning in CI/CD pipeline, and (4) Maintain updated SECURITY.md with responsible disclosure process.

• Medium · Potential Sensitive Information in Repository — activation_code.html, de_DE/activation_code.html, and potentially other localized versions. The file 'activation_code.html' appears in the repository root and multiple localized versions. This filename suggests it may contain or reference activation/license code logic, which could be sensitive. If this file contains hardcoded credentials, keys, or proprietary algorithms, it poses a security risk. Fix: Audit these files for hardcoded credentials, API keys, or sensitive logic. Move any sensitive logic to backend services and implement proper access controls. Consider using environment variables for sensitive configuration.
• Medium · Missing Dependencies Analysis — Dependencies/Package files (package.json, requirements.txt, pom.xml, cargo.toml, etc.). The 'Dependencies/Package file content' section is empty, preventing assessment of third-party library vulnerabilities. This is a critical oversight as FileCentipede handles downloads and networking, which are common attack vectors. Fix: Provide complete dependency manifests. Regularly scan dependencies using tools like 'npm audit', 'pip check', 'cargo audit', or OWASP Dependency-Check. Pin versions to known-good releases and automate dependency updates with security patches.
• Medium · No Source Code Provided for Security Review — Source code directory (not provided). Only file structure and documentation files are visible. The actual source code for the application is not provided, limiting security analysis. Given that this is a download manager handling HTTP(S), FTP(S), SSH, and magnet links, there are significant potential attack surfaces (protocol handling, file validation, connection security). Fix: Provide source code for comprehensive security review. Perform static code analysis for: protocol validation, certificate pinning, input validation, cryptographic implementations, and secure file handling.
• Low · GitHub Workflow Backup File — .github/workflows/readme.yml.bak. The file '.github/workflows/readme.yml.bak' suggests a backup of workflow configuration. Backup files should not be committed to version control as they can become stale and lead to confusion or security issues. Fix: Remove backup files from repository. Use git history or a proper backup solution instead. Add '*.bak' to .gitignore to prevent accidental commits.
• Low · Multiple Language Files Without Clear Localization Security — Multiple localization directories and README files. The repository contains numerous localized documentation files (de_DE, README in multiple languages). While localization is good for UX, ensure that translated content doesn't introduce security issues and that the localization process doesn't expose sensitive information. Fix: Review localization process for consistency with security messaging. Ensure security-critical information (privacy policies, security advisories) are consistently translated and up-to-date across all languages.

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.