HSCL1 = Hypercharged Supreme Computing Layout 1
Made with love by hcsmedia · Publisher: HCSMEDIA
✨ Features • 🚀 Quick Start • 📸 Live Showcase • 💻 3 Modes • ⚡ CLI Reference • 🔧 Troubleshooting • 📦 Download • 🛠️ Build From Source
HSCL1 0.1.8-alpha.0 running live in QEMU/WHPX - clean first boot with HCS top status bar, centered floating dock, and Midnight theme.
- Cohesive Keyboard-First Ergonomics: A unified workstation experience combining the speed and aesthetics of Omarchy with the rock-solid hardware stability of Ubuntu 26.04 LTS and KDE Plasma 6.6 LTS. Slim top status bar, centered floating dock, and dynamic GPU/CPU shader-driven wallpapers.
- Three Structurally Isolated Modes: Seamless switching between everyday Workstation, isolated Security Lab (rootless Podman + official Kali Linux OCI containers), and an ephemeral Privacy Session (RAM overlay, unmounted host storage, isolated network routing).
- No HSCL1 telemetry & rigorous attestation: HSCL1 adds no analytics, no crash upload and no remote control; 100% offline documentation in 3 languages (English, German, French), LUKS2 full-disk encryption with Argon2id, and an evidence-based contract—features are backed by automated tests and recorded proof. Base-system network contacts (time sync, package mirrors, the installer's connectivity and geo-IP check) are disclosed in Known limitations.
Important
Status: Pre-Alpha (0.1.8-alpha.0).
HSCL1 is verified in virtual machines only (UEFI and BIOS firmware under QEMU 9.2.0 with WHPX / KVM acceleration). The current artifact is HSCL1-0.1.8-alpha.0-amd64.iso (def7f190., 5,027,201,024 B, built from 91c8acb, xz, clean tree): UEFI boot at 4 GB reached the desktop and scripts/qa_report.py exits 0 (9 checks ok, one info line about Secure Boot), and 20 of 20 sequential installer starts survive. Verified in QEMU:
- a full unencrypted installation at the documented 4 GB minimum (
All done, the disk then boots withiso=none, logs in, and reportshscl doctor6 passed / 0 failed / 1 skipped) — evidence fromHSCL1-rc1(f8ae5c52…), not rebuilt for 0.1.6, 0.1.7 or 0.1.8; - an LUKS2 installation at 8 GB (wrong passphrase refused by cryptsetup, correct one unlocks,
LUKS volumes open: 1); a 6 GB LUKS run panicked once — evidence from the 0.1.4/0.1.5 candidates; - the Security Lab chain end to end on
rc2in one live session: digest-pinned Kali pull →hscl lab install --toolset basic→commit→run, last stepNmap version 7.99, exit 0.
Fixed on this artifact: the desktop labels are upright (they were italic because Plasma italicises link labels and the entries were symlinks) and carry no orange untrusted badge; the label centre sits within 1 px of the icon centre (measured).
Secure Boot: the ISO carries the signed Canonical/Microsoft boot components (artifacts/sb-0.1.3-alpha.0/report.json), but the test firmware ran with Secure Boot off, so a positive Secure-Boot boot has not been demonstrated.
Not verified: bare-metal physical hardware, USB-media boot, TPM-backed encryption, a Tor-routed privacy session, signed releases (SHA-256 checksums only). The installer is still killed in roughly one start in six to twelve within its first seconds (Q-61); the launcher retries up to three times. Read Known limitations and the evidence ledger before installing.
Note
HSCL1 is not Tails, not an official Kali release, and is not affiliated with or endorsed by the Tails project, Canonical, the KDE/Kubuntu projects, or Offensive Security. It makes no anonymity claim. KALI LINUX™ is a trademark of OffSec. Where strong anonymity matters, use the official Tails release. See Trademarks.
Test the verified pre-alpha live ISO in a hardware-accelerated disposable virtual machine with a single command:
# Run with 4 GB RAM and dismiss first-run dialogs automatically:
python scripts/qemu_boot_test.py `
--iso "path\to\HSCL1-0.1.8-alpha.0-amd64.iso" `
--mem 4096 `
--dismiss-welcome# Run with hardware KVM acceleration and UEFI firmware:
qemu-system-x86_64 -enable-kvm -m 4096 -smp 4 \
-bios /usr/share/ovmf/OVMF.fd \
-cdrom HSCL1-0.1.8-alpha.0-amd64.iso \
-vga std -device virtio-net-pci,netdev=net0 \
-netdev user,id=net0Every screenshot below is a real capture taken inside a booted HSCL1 QEMU guest through the hypervisor QMP interface and the guest Workshop daemon. The artifact is named per screenshot group, because they were taken across several candidates rather than in one session. Terminal sections show the Konsole window; the desktop frame is not part of that crop.
The HCS desktop uses a shader-driven wallpaper engine, switchable with hscl appearance wallpaper set <preset id> (presets: aurora, starfield, grid-pulse, midnight-rain, sparse-rain). All four effects are captured below, each switched on a clean desktop on the same boot (rc3 evidence); the earlier audit note about grid/rain was a capture that typed effect names instead of preset ids.
| Clean Live Desktop & Floating Dock | Kickoff Application Launcher |
|---|---|
|
 |
| Aurora Glow | Starfield Deep Space Drift |
 |
 |
| Grid Pulse | Midnight Number Rain |
 |
 |
A zero-telemetry control center providing instant hardware diagnostics, security policy auditing, theme customization, and system identity verification.
| System Overview & Hardware Profiling | Security Baseline & Firewall Policy |
|---|---|
 |
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| Appearance & Desktop Design Tokens | System Attestation & Versioning |
 |
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Built-in developer terminal with full hardware diagnostic output, redacting health checks, and containerized security lab controls.
System Status & Diagnostic Doctor (hscl) |
Isolated Security Lab Suite (hscl lab) |
|---|---|
 |
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Privacy Posture & Security Baseline (hscl privacy/security) |
Diagnostic Log Redaction & Language (hscl logs/language) |
 |
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Familiar window ergonomics, Dolphin file manager with HCS styling, Kate text editor with syntax highlighting, and an offline trilingual documentation handbook.
| Dolphin File Manager (HCS Theme) | Kate Text Editor (/etc/os-release) |
|---|---|
 |
 |
Trilingual offline handbook (EN/DE/FR) — opened from the desktop icon, fully offline:
Automated full-disk encryption with Argon2id key derivation, unencrypted /boot, and encrypted root volume, verified end-to-end on disposable virtual disks.
| Calamares Welcome & Language Selection | Timezone & Geographic Location |
|---|---|
 |
 |
| Encryption on the partition page (candidate rc3) | LUKS2 unlock prompt at boot (candidate rc6) |
 |
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All four captures come from booted candidates (11/19/21 from HSCL1-rc3, 22/23 from HSCL1-rc6);
docs/img/showcase/manifest.json records the ISO and SHA-256 prefix per file. 23_luks_unlock_wrong.png shows the
same prompt after a wrong passphrase, which cryptsetup refuses without touching the disk.
flowchart LR
subgraph HSCL1["HSCL1 Operating System"]
direction TB
A["💻 Workstation Mode<br>Ubuntu 26.04 + KDE 6.6<br>Daily Driver & Coding"]
B["🛡️ Security Lab<br>Rootless Podman + Kali OCI<br>Curated Tooling & CTF"]
C["🔒 Privacy Posture<br>Tor visible, not routed<br>Ephemeral only in the live ISO"]
end
style HSCL1 fill:#0f172a,stroke:#38bdf8,stroke-width:2px,color:#fff
style A fill:#1e293b,stroke:#0ea5e9,color:#fff
style B fill:#1e293b,stroke:#ef4444,color:#fff
style C fill:#1e293b,stroke:#10b981,color:#fff
- Modern Desktop: KDE Plasma 6.6 LTS with custom HCS top bar and dock.
- Hardware Autotune: Dynamic GPU detection and automatic compositing adjustments (
hscl autotune). - Memory Protection: Automated
earlyoom, compressed/dev/zram0swap, and AI workload RAM budgets. - Offline Handbook: Complete trilingual reference manual accessible directly offline in English, German, and French.
- Isolation by Architecture: Security and penetration testing tools run strictly in rootless OCI containers (Podman) or disposable VMs—never mixed into the host APT repositories.
- Digest-pinned by construction, not yet exercised:
hscl labrefuses any image reference that is notname@sha256:<64 hex>; the pull and toolset build of an official Kali image has not been run in a guest yet (Q-18), so no Kali tool is installed or reported as verified. - Mandatory Authorization: CLI execution requires explicit attestation:
$ hscl lab run --yes="I am authorized to test this target" -- nmap -sV 127.0.0.1 - Fail-Closed: Containers mount no host home directories, credentials, or SSH agents by default.
Warning
Status: reporting, not routing. This mode is not a Tor-routed environment and does not claim
"zero host persistence". Verified on 2026-11-10 in the live ISO: hscl privacy status reports
session: ephemeral (volatile RAM overlay), zram memory swap: active, persistent disk swap: none,
core dumps: disabled, and it reports the Tor state honestly (tor service: inactive,
tor browser: not installed) instead of pretending. A Tor-routed privacy boot target, a kill switch and a
packet-capture proof do not exist yet — Q-17 tracks them as open.
- Ephemeral live session only: the live ISO runs from a read-only squashfs with a volatile overlay; the
installed system is persistent by design (
session: installed (persistent root)). - Reporting instead of promising:
hscl privacy status/hscl security statusshow swap, core dumps, automounted disks, Tor service and LUKS state, and name the session type, so the numbers can be checked. - Not Tails: no anonymity claim, no anti-forensics claim, no modified Tor Browser. Where strong anonymity matters, use the official signature-verified Tails release.
HSCL1 can inspect and update a Bitaxe-class miner that already runs the owner's ESP-Miner fork. This is deliberately small and guarded:
$ hscl miner status # local config + esptool availability, no device contact
$ hscl miner discover --prefix 192.168.178 # find AxeOS/Bitaxe miners (read-only, by MAC)
$ hscl miner probe 192.168.178.61 # GET /api/system/info (read-only)
$ hscl miner plan 192.168.178.61 --firmware esp-miner.bin # SHA-256, size, endpoint, rollback hint
$ hscl miner ota 192.168.178.61 --firmware esp-miner.bin --yes="I am authorized to flash this device"
$ hscl miner flash --port COM3 --offset 0x10000 --firmware esp-miner.bin --yes="I am authorized to flash this device"
$ hscl miner serve --device 192.168.178.61 # read-only API on 127.0.0.1:8787 for other toolsThe local API is the data path for the desktop and other agents: /v1/health, /v1/miners,
/v1/miner?host=…; it polls in the background so a slow device never blocks a reader. The MCP server
exposes hscl_miner_status, hscl_miner_probe and hscl_miner_discover as read-only tools.
- Private networks only. Loopback, RFC1918, link-local, unique-local and
*.localare accepted; a public address is refused before a socket is opened. The MCP tools (hscl_miner_status,hscl_miner_probe) enforce the same rule. - No silent flashing. OTA and USB flashing require the exact authorization phrase;
--dry-runprints the command and the hash and sends/writes nothing. - Honest about the firmware. AxeOS OTA has no authentication beyond a network-range check, no TLS,
no signature verification and no downgrade protection — the plan prints that on every run. Details and
sources:
docs/miner/FIRMWARE_RESEARCH.mdand the miner ADR. - Not implemented: receiver daemon, pairing, fleet discovery, pool credentials, eFuse/Secure Boot provisioning. Mining hardware is not shipped by HSCL1.
The Control Center has a Miner page that shows the last device's address, hostname, board, firmware, hashrate, temperature, power, shares and pool from that same CLI path — read-only, localised EN/DE/FR.
The hscl tool provides unified control over the workstation, security tooling, memory policies, and local AI workflows:
# System status & diagnostics
$ hscl status # Hardware, kernel, and memory summary
$ hscl doctor # Diagnostic health checks (redacted by default)
# Hardware & graphics profiling
$ hscl graphics detect # Identify GPU and recommended visual profile
$ hscl memory status # Inspect RAM, zram, and AI inference headroom
# Dynamic desktop styling
$ hscl wallpaper list # Available wallpaper shader presets
$ hscl wallpaper apply rain # Switch desktop wallpaper immediately
# Security Lab container execution
$ hscl lab run --yes="I am authorized to test this target" -- nmap 127.0.0.1
$ hscl lab install --project demo \
--image kalilinux/kali-rolling@sha256:<digest> \
--toolset web --yes="I am authorized to test this target"
# Local AI profiling
$ hscl ai model recommend # Models fitting the available RAM/VRAM budget
# Model Context Protocol (MCP) server
$ hscl mcp # Stdio MCP JSON-RPC server (read-only by default)Detailed CLI documentation is available in docs/CLI.md.
| Issue | Cause | Solution |
|---|---|---|
| Black screen or sluggish boot | Hardware acceleration disabled in QEMU | Ensure -accel whpx,kernel-irqchip=off (Windows) or -enable-kvm (Linux) is active. |
| Installer closes / "Crash Handler" appears | The wizard is SIGKILLed 2-3 s after it starts in roughly one start in six to twelve (no core dump, no OOM; see known limitations) | Open, mitigated in the next candidate. /usr/bin/hscl-calamares restarts the wizard when it dies inside its first minute, and HSCL1-rc6 does that. The published v0.1.5-alpha.0 predates the wrapper: if the window disappears, start it again - the next attempt succeeds. An earlier cause (the welcome module's network probe) is fixed and removed from welcome.conf. |
Installer stops with hscl-verify-esp: … did not populate the EFI system partition |
The installer wrote the system but no EFI loader reached the EFI partition, so the machine would not boot | The image now refuses to report "All done" in that case instead of leaving an unbootable disk (Q-63). Nothing is lost: start the installation again, and if it repeats, report the exact /var/log/calamares.log excerpt. |
| Out-of-memory / kernel panic | Allocating < 3 GB RAM to the VM | The live ISO unpacks a zstd squashfs into RAM overlay; allocate at least 3072 MB (recommended: 4096 MB). |
| Welcome screen doesn't dismiss | Plasma first-run dialog modal grab | Press Esc or click the bottom-left "Skip" button ((0.288, 0.848) screen coordinates). |
| Secure Boot verification failure | Unsigned test image on third-party UEFI | Use the signed Ubuntu shim/GRUB bootchain or run with standard OVMF firmware (--firmware uefi). |
| Installer cannot find disk | No virtual disk attached to VM | Pass --disk <path.qcow2> to qemu_boot_test.py or -drive file=<disk>,if=virtio in QEMU. |
HSCL1 adheres to a strict evidence-driven development contract: nothing is claimed as working without recorded cryptographic and automated test proof.
| Area | Status | Evidence / Verification Metric |
|---|---|---|
| Remastered Live/Installer ISO | VM-VERIFIED |
HSCL1-0.1.8-alpha.0-amd64.iso (def7f190., source 91c8acb, xz): live desktop at 4 GB under UEFI (QEMU+WHPX), qa_report.py exit 0 with 9 checks, verify-image green including installer notes step stays disabled (Q-68); docs/img/showcase/01_desktop_clean.png is this artifact's own capture |
| Signed boot components present | TESTED |
artifacts/sb-0.1.3-alpha.0/report.json: Microsoft-signed bootx64.efi, Canonical-signed grubx64.efi, vmlinuz, mmx64.efi. A positive Secure-Boot boot is not demonstrated — the test firmware ran with Secure Boot off and the guest says so |
| LUKS2 Full-Disk Installation | VM-VERIFIED |
40 GB virtual disk at 8 GB RAM: Argon2id, / = 0:0 755, wrong passphrase refused, correct one unlocks, no passphrase in logs; image from the 0.1.3 line: docs/img/desktop-installed.png |
Rust hscl CLI Workspace |
TESTED |
cargo test --all: 275 passed, 0 failed (Windows, 2026-11-10); cargo clippy --all-targets -D warnings and cargo fmt --check clean |
| Security Lab CLI | VM-VERIFIED |
rc2 live guest: digest-pinned Kali pull, install --toolset basic, commit, run → Nmap version 7.99, exit 0; run defaults to --network=none and drops capabilities |
| MCP Stdio Server Protocol | TESTED |
7/7 protocol tests passed via scripts/dev/mcp_selftest.py (JSON-RPC handshake, 14 tools listed) |
| Memory Manager Baseline | VM-VERIFIED |
/dev/zram0 (1.9 GB zstd, priority 100), earlyoom active, hscl-ai.slice memory capped at 60% |
| HCSEASYMATH Symbolic Engine | TESTED |
244 math test cases green; differentiate, integrate, evaluate, simplify, solve, plot |
| NPBENCH Algorithmic Suite | TESTED |
134 tests green; DIMACS parser, DRAT checker, RUP refutations, WalkSAT, CDCL baseline |
| Split & Rejoin Integrity | TESTED |
3 parts (<1900 MiB) join byte-identically to whole ISO; verified via release-join.sh --verify-only |
| Bitaxe/ESP-Miner OTA (real device) | HARDWARE-VERIFIED (one device) |
timsminer, board 201, BM1366: firmware built from source (2 758 656 B, SHA-256 ecb7463…), flashed via hscl miner ota in 263 s; version v4.0.2-rc1-sha-research → v4.0.2-rc1, board and MAC unchanged; pre/post telemetry in docs/miner/TELEMETRY.md |
Full evidence log available at docs/CLAIMS.md and docs/BUILD_LOG.md.
Pre-release assets are hosted on GitHub Releases. Because the ISO exceeds GitHub's 2 GiB per-file limit, it is distributed in numbered split parts with full cryptographic checksums.
Note
v0.1.8-alpha.0 is the current prerelease (ISO def7f190., 5,027,201,024 bytes, built from 91c8acb, xz). It supersedes v0.1.7-alpha.0 (400fb9d7.) and fixes the installer's startup crash: the notesqml step segfaulted while the progress tree painted its name (NotesQmlViewStep::prettyName() -> TranslatedString::get()), the step is out of the sequence, and 20 of 20 starts now survive with a core pattern set. The release notes carry the backtrace.
# 1. Download release assets (parts + SHA256SUMS)
$ mkdir hscl1-release && cd hscl1-release
$ gh release download v0.1.8-alpha.0 --repo timfromhcs/HSCL1
# 2. Clone repository to obtain verified join script
$ git clone https://github.com/timfromhcs/HSCL1 ../HSCL1-src
# 3. Verify integrity of all parts against SHA256SUMS (dry-run, writes nothing)
$ bash ../HSCL1-src/scripts/release-join.sh . --verify-only
# 4. Join parts into single bootable ISO
$ bash ../HSCL1-src/scripts/release-join.sh .26d1198d5d90a559fc15dda6097fc2ad9277c2798c22e09f5b7604e3e02bf6cd HSCL1-0.1.8-alpha.0-amd64.iso.part000
66ec92b301cdcad650d50f72daf212c27b0f249f08f7394c1e241bba72112a61 HSCL1-0.1.8-alpha.0-amd64.iso.part001
637c833d878dbcaf0a16e4b5c269a54ff39bf3f01b4908f74962e22ecce4e8fa HSCL1-0.1.8-alpha.0-amd64.iso.part002
def7f190a061811970f6a053d2dfbe1e2e9e797926c62c2b12a28952fcd8c84d HSCL1-0.1.8-alpha.0-amd64.iso
Tip
A single joined .iso file is also created automatically by the GitHub Actions Cloud Verification workflow (.github/workflows/release.yml) and retained as an Actions artifact for 90 days.
HSCL1 uses a reproducible remastering and package build pipeline. Detailed requirements and setup guides are in docs/BUILDING.md.
# 1. Run local rust test suite
$ cargo fmt --all -- --check
$ cargo clippy --all-targets -- -D warnings
$ cargo test --all
# 2. Run Python & shell validation gates
$ python scripts/forge.py check
# 3. High-performance developer cycle (WSL2 bridge)
$ scripts/dev/wsl-cycle.sh status
$ scripts/dev/wsl-cycle.sh iso --fast| Path | Purpose |
|---|---|
cli/hscl |
Rust CLI workspace, MCP server, security lab, memory manager, and system diagnostics |
apps/control-center |
Qt 6 / QML Control Center with modular diagnostics, security, and appearance pages |
apps/hcseasymath |
Isolated symbolic mathematics engine and educational user interface |
packages/debian |
HSCL1 Debian packages (base, branding, desktop, security, handbook, control-center, workshop) |
distro |
Live image hooks, Calamares installer configuration, initrd customization, and security sysctl |
themes |
Design tokens (Midnight, Light, Nord, Aurora) and asset generation scripts |
scripts |
Remaster pipeline, release split/join, QEMU boot test harness, and developer cycle tools |
handbook |
Trilingual offline documentation handbook (English, Deutsch, Français) |
docs |
Architecture specifications, threat models, claims ledger, and roadmap plans |
- Claims & Evidence Ledger - Exact status and proof targets for every feature.
- Installation guide - USB writing, the installer pages, encryption and recovery, with the untested parts named.
- VM guide - The exact QEMU settings the tests use, install/LUKS boot commands and troubleshooting.
- Hardware compatibility - What is verified (virtual machines) and what is not (everything physical).
- Troubleshooting - Boot, installer, desktop, network and lab symptoms with the commands that diagnose them.
- Local AI - Detection, backends, the model catalogue, storage, and the loopback server, with the unverified parts named.
- Known Limitations — Honest disclosure of pre-alpha boundaries and gaps.
- Architecture Overview — System layers, packaging, and interaction model.
- Threat Model & Security — Security assumptions and container isolation rules.
- Build Log — Chronological engineering execution and test logs.
- Roadmap to v1.0.0 — Active self-healing research masterplan.
- Quality audit & visual QA (2026-11-09) — What works, what is weak, every known defect.
- Autonomous work queue — The ordered list the agent loop executes.
- Miner firmware research — Current ESP-Miner/AxeOS facts and limits.
- Miner hardware plan — What is proven on hardware, what is not.
- Miner telemetry — Measured pre/post-flash numbers.
- Miner bridge ADR — Receiver design and the implemented CLI slice.
- Licenses & Attributions — Upstream component licenses and intellectual property terms.
Deutsch (German)
HSCL1 (Hypercharged Supreme Computing Layout 1) ist eine moderne Linux-Workstation auf Basis von Ubuntu 26.04 LTS (Kubuntu) und KDE Plasma 6.6 LTS mit eigenem Oberflächendesign (schlanke Top-Bar, schwebendes App-Dock, shader-basierte animierte Wallpaper), dem Kommandozeilenwerkzeug hscl, einem nativen Qt6/QML Control Center, einem vollständigen Offline-Handbuch (EN/DE/FR), integrierter Speicherverwaltung, lokalen KI- und Coding-Werkzeugen sowie isolierten Security-Lab-Workflows.
Status: Pre-Alpha (0.1.8-alpha.0). Bislang ausschließlich in virtuellen Maschinen (QEMU mit WHPX/KVM) getestet, nicht auf physischer Hardware. Die Releases sind unverschlüsselt/unsigniert (Integritätssicherung über SHA-256-Prüfsummen). HSCL1 ist weder Tails noch ein offizielles Kali Linux und erhebt keinen universellen Anonymitätsanspruch. Alle verifizierten Fakten und Grenzen sind transparent in docs/CLAIMS.md und docs/KNOWN_LIMITATIONS.md dokumentiert.
Das ISO-Abbild überschreitet das GitHub-Größenlimit und wird in 3 Split-Parts bereitgestellt, die mit scripts/release-join.sh geprüft und zusammengesetzt werden. Der Installer schreibt auf den ausgewählten Datenträger – bitte ausschließlich disposable virtuelle Disks verwenden.
Français (French)
HSCL1 (Hypercharged Supreme Computing Layout 1) est une station de travail Linux moderne basée sur Ubuntu 26.04 LTS (Kubuntu) et KDE Plasma 6.6 LTS, dotée d'une interface originale (barre supérieure épurée, dock d'applications flottant, fonds d'écran animés dynamiques), de l'outil CLI hscl, d'un Centre de contrôle natif en Qt6/QML, d'un manuel hors-ligne trilingue (EN/DE/FR), d'une gestion intelligente de la mémoire et d'un laboratoire de sécurité isolé.
État : Pré-alpha (0.1.8-alpha.0). Testé exclusivement dans des machines virtuelles (QEMU avec accélération WHPX/KVM), aucun test sur matériel physique réel. Les publications ne sont pas signées cryptographiquement (sommes de contrôle SHA-256 fournies). HSCL1 n'est ni Tails, ni une version officielle de Kali, et ne garantit aucun anonymat absolu. Les preuves et limitations sont détaillées dans docs/CLAIMS.md et docs/KNOWN_LIMITATIONS.md.
L'image ISO dépassant 2 Gio, elle est distribuée sous forme de segments numérotés vérifiables et assemblables via scripts/release-join.sh. L'installateur applique les changements sur le disque sélectionné – utilisez uniquement des disques virtuels jetables.
Please read CONTRIBUTING.md and CODE_OF_CONDUCT.md before submitting contributions.
Security vulnerabilities must be reported privately according to our SECURITY.md vulnerability disclosure process.
GPL-3.0-or-later for HSCL1-owned code, artwork, and documentation (LICENSE, NOTICE).
Third-party components, including the Ubuntu/Kubuntu foundation, retain their respective upstream licenses (docs/LICENSES.md).
Trademarks belong to their respective owners.