System Requirements Document for deb-ai-app

1. Introduction

deb-ai-app is a Debian package deliverable intended for a user who needs to install and run AI chatbot applications that are not officially supported on their Debian-based system.

The current product scope is deliberately narrow:

• Produce a valid .deb package.
• Enable installation of the package on a compatible Debian-based system.
• Enable the installed package to run bundled unsupported AI chatbot applications.
• Provide a public Landing page that explains the package, its installation path, and its purpose.

The intended audience consists of the Debian Package Builder, who produces and installs the package artifact, and the AI Chatbot App User, who launches the unsupported AI chatbot applications after installation.

2. System Overview

deb-ai-app is delivered primarily as a Debian package artifact rather than as a hosted web application. The .deb package is installed using standard Debian package tooling such as dpkg and, where needed for dependency resolution, apt.

The package must contain or otherwise make available the files required to launch the unsupported AI chatbot applications within the supported packaging boundary. The package is successful when it installs on the target Debian-based system and the user can launch the packaged unsupported AI chatbot applications.

Current system actors are:

• Debian Package Builder — creates, obtains, installs, verifies, and launches the package artifact.
• AI Chatbot App User — runs an unsupported AI chatbot application after the package is installed.

The current system does not establish account management, hosted chatbot services, user profiles, subscriptions, role-based access control, cloud synchronization, or a catalogue of unrelated AI applications.

2a. Product Interpretation and Delivery Boundary

The primary deliverable is a .deb package for a Debian-based target system with dpkg and apt available.

The package is responsible for packaging the accepted unsupported AI chatbot application sources or binaries and making the packaged applications runnable after installation. The package must not claim official vendor support for those applications.

The Landing page is a public informational entry surface. It explains the package’s purpose, how to obtain the package artifact, how to install it, and how to run the packaged applications. It does not require identity establishment or authentication.

The system’s current scope ends at successful installation and launch of the supported packaged chatbot applications. Ongoing chatbot functionality, chatbot provider services, chatbot model behavior, vendor accounts, and third-party application operations remain owned by the relevant chatbot application or provider.

2c. Page Content and Component Coverage

Landing

• Purpose and information

  • Explain that deb-ai-app is a .deb package for installing and running unsupported AI chatbot applications.
  • State that the package targets Debian-based systems.
  • State that successful use depends on a compatible Debian-based system with dpkg and apt available.
  • State that the packaged unsupported chatbot application sources or binaries must be available for inclusion in the package.
  • Present the package artifact as the primary deliverable.

• Primary action

  • Provide a package acquisition action for the available .deb artifact.
  • Label the artifact with its package filename, version, architecture, size, and checksum only when those values are available from the produced package.
  • Provide a copyable installation command using the artifact filename, such as:

    sudo dpkg -i <package-file>.deb
    

• Installation guidance

  • Explain that the user runs the installation command on a compatible Debian-based system.
  • Explain that dependency issues reported by dpkg may require the user to resolve dependencies with the system package manager, such as:

    sudo apt --fix-broken install
    

  • Explain that successful installation produces an installed package state and makes the packaged launcher available.

• Launch guidance

  • Identify the installed launcher command or application entry point when defined by the built package.
  • Explain that the user launches the packaged unsupported AI chatbot application from the installed launcher.
  • Distinguish package installation success from successful launch of the chatbot application.

• Compatibility and package manifest

  • Present package metadata when known:
    • Package name
    • Version
    • Architecture
    • Dependencies
    • Installed size or artifact size
    • SHA256 checksum
  • Present the bundled or supported unsupported AI chatbot applications only when they are known and included in the package build.
  • Do not invent application names, vendor logos, versions, compatibility statuses, or checksum values.

• Terminal transcript

  • Show an illustrative terminal sequence for package installation and launch.
  • Clearly distinguish example output from verified package output when the actual package has not yet been built.
  • Show successful installation as a terminal result.
  • Show installation failure using an exit code and recovery guidance rather than generic visual error messaging.

• Loading, empty, success, error, and recovery states

  • Loading: Package metadata or artifact availability is being retrieved or prepared.
  • Empty: No produced .deb artifact or verified package metadata is available to present.
  • Success: The package artifact is available, its metadata is displayed, and installation instructions are available.
  • Error: The package artifact cannot be obtained, metadata cannot be verified, or the target system is incompatible.
  • Recovery: The user is directed to verify the package artifact, verify the target system, resolve package dependencies, and rerun the relevant command.

3. Functional Requirements

FR-1 — Produce an installable Debian package

As a Debian Package Builder, I should be able to obtain a .deb package for deb-ai-app so that I can install it on my Debian-based system.

• Provenance: explicit
• Trigger or input: The Debian Package Builder requests or downloads the produced deb-ai-app package artifact.
• Access state: Public; no identity or authentication is required.
• Required behavior:
  • The system shall produce a package artifact in Debian .deb format.
  • The package shall be installable on a compatible Debian-based system where dpkg and apt are available.
  • The package shall include the files, sources, binaries, wrappers, or other packaging contents required to enable the accepted unsupported AI chatbot applications to run.
  • The package shall expose package metadata appropriate to a Debian package, including package name, version, architecture, dependencies, and installed size where available from the build.
• Observable result or state change: The user has a downloadable or otherwise obtainable .deb package artifact that can be submitted to dpkg for installation.
• Material failure and recovery:
  • If the package artifact cannot be produced or obtained, the user shall be informed that no installable artifact is available.
  • If package metadata is unavailable or cannot be verified, the package shall not be represented as verified.
  • The user may retry after a valid package artifact is produced or made available.
• Continuation: The Debian Package Builder proceeds to install the .deb package on the target system.
• Acceptance criteria:
  • A generated deliverable uses the .deb package format.
  • The package can be passed to dpkg -i on a compatible Debian-based system.
  • The package content supports the subsequent launch of the bundled unsupported AI chatbot applications.

FR-2 — Install and run unsupported AI chatbot applications

As an AI Chatbot App User, I should be able to run unsupported AI chatbot applications after installing deb-ai-app so that I can use those applications despite their lack of official support.

• Provenance: explicit
• Trigger or input: The AI Chatbot App User installs the deb-ai-app .deb package and invokes the installed chatbot application launcher.
• Access state: Local access to the compatible Debian-based system; no application account is required by deb-ai-app.
• Required behavior:
  • The installed package shall provide a launchable entry point for the unsupported AI chatbot applications included in the package.
  • The package shall make the required packaged application files available at installation time.
  • The application launcher shall invoke the packaged unsupported AI chatbot application rather than requiring the user to manually reconstruct the package contents.
  • The package shall not imply that the chatbot applications are officially supported by their vendors, distributions, or providers.
• Observable result or state change: The unsupported AI chatbot application starts on the user’s installed system.
• Material failure and recovery:
  • If installation fails because dependencies are unresolved, the user shall be able to use Debian package-management recovery tooling, including apt --fix-broken install where applicable, before retrying the installation.
  • If the launcher cannot start the packaged chatbot application, the user shall receive an observable command or process failure result, including an exit code where the operating environment provides one.
  • The user may correct the installation or package contents and attempt the launch again.
• Continuation: After successful launch, the AI Chatbot App User continues in the launched unsupported AI chatbot application.
• Acceptance criteria:
  • After successful installation, the installed package provides a usable chatbot application launcher or command.
  • Invoking the launcher starts the packaged unsupported AI chatbot application when its packaged runtime requirements are satisfied.
  • A failed installation or launch does not appear as a successful application start.

FR-3 — Provide public package and installation guidance

As a Debian Package Builder, I should be able to view package, installation, and launch guidance on the Landing page so that I can obtain, install, and run deb-ai-app.

• Provenance: required_inference
• Rationale: A public entry surface is required to explain the accepted package deliverable, acquisition, installation, and launch lifecycle without introducing account requirements.
• Trigger or input: The Debian Package Builder opens the Landing page.
• Access state: Public; no identity or authentication is required.
• Required behavior:
  • The Landing page shall explain that deb-ai-app is a .deb package for installing and running unsupported AI chatbot applications.
  • The Landing page shall present the package acquisition path when a package artifact is available.
  • The Landing page shall present dpkg installation guidance.
  • The Landing page shall present dependency-recovery guidance for package installation failures.
  • The Landing page shall present launch guidance for the installed chatbot application entry point when it is defined by the package build.
• Observable result or state change: The Debian Package Builder can identify the package artifact, installation command, recovery path, and application launch path.
• Material failure and recovery:
  • If an artifact is unavailable, the page shall state that no package artifact is currently available.
  • If package metadata is not verified, the page shall avoid representing the metadata as verified.
  • The user may return when a valid package artifact and verified metadata are available.
• Continuation: The Debian Package Builder downloads or otherwise obtains the package artifact, then installs it locally.
• Acceptance criteria:
  • The Landing page is publicly accessible.
  • The page explains the package purpose and target environment.
  • The page provides installation and recovery guidance without requiring a user account.
  • The page does not invent unsupported chatbot app names or package metadata values.

4. User Personas

Debian Package Builder

• Provenance: required_inference from Planning Scope.
• Product context: The Debian Package Builder needs a locally installable Debian package that packages unsupported AI chatbot applications for a Debian-based environment.
• Primary goal: Obtain and install a valid .deb package that makes the intended unsupported AI chatbot applications runnable.
• Distinct responsibilities:
  • Obtain or produce the .deb package artifact.
  • Verify that the artifact is appropriate for the target Debian-based environment.
  • Run the package installation command.
  • Respond to package dependency failures using supported Debian package-management recovery steps.
  • Verify that installation has completed before launching the packaged chatbot application.
• Relevant inputs and decisions:
  • The package artifact filename.
  • The target system architecture and Debian compatibility.
  • Package metadata and checksum when available.
  • Installation output and exit status.
  • Whether package dependencies must be resolved before retrying installation.
• Interactions with other participants: The builder’s installation outcome enables the AI Chatbot App User to launch the packaged application. The chatbot application itself remains external to deb-ai-app after launch.
• Observable success: dpkg installs the package successfully and the installed launcher becomes available for the packaged unsupported AI chatbot application.

AI Chatbot App User

• Provenance: required_inference from Planning Scope.
• Product context: The AI Chatbot App User needs to run an AI chatbot application that lacks official support on the user’s system.
• Primary goal: Launch and use the packaged unsupported AI chatbot application after deb-ai-app has been installed.
• Distinct responsibilities:
  • Invoke the installed chatbot application launcher or command.
  • Observe whether the packaged application starts successfully.
  • Use the chatbot application after it has been launched.
  • Report or act on launch failures using the observed process output or exit status.
• Relevant inputs and decisions:
  • The installed launcher command or desktop entry, where the package defines one.
  • The local system state after installation.
  • Any observed launch failure result.
• Interactions with other participants: The user depends on the Debian Package Builder’s successful package installation. After launch, the chatbot application or its external provider owns chatbot-specific behavior.
• Observable success: The packaged unsupported AI chatbot application starts and is available for the user to use.

5. Core User Flows

Flow 1 — Obtain and install the deb-ai-app package

Persona: Debian Package Builder
Starting context: The builder is using a compatible Debian-based system with dpkg and apt available.

1. The Debian Package Builder opens the public Landing page.
2. The Landing page explains that deb-ai-app is a .deb package intended to install and run unsupported AI chatbot applications.
3. The builder reviews the available package metadata, including package name, version, architecture, dependencies, package size, and checksum when those values are available from the package build.
4. The builder obtains the available .deb package artifact.
5. The builder runs the displayed installation command:

   sudo dpkg -i <package-file>.deb
   

6. The local Debian package manager evaluates the package and its dependencies.
7. If installation succeeds, dpkg reports successful package installation and the package’s application launcher becomes available.
8. The builder continues to the application launch flow.

Failure and recovery path

1. If dpkg reports missing or unresolved dependencies, the builder observes the installation failure output and exit status.
2. The builder runs the applicable dependency recovery command, such as:

   sudo apt --fix-broken install
   

3. The builder reruns the .deb installation command if required.
4. If the package artifact is unavailable or cannot be verified, the builder returns to the Landing page and waits for or obtains a valid package artifact.

Flow 2 — Launch an installed unsupported AI chatbot application

Persona: AI Chatbot App User
Starting context: deb-ai-app has been installed successfully on the local Debian-based system.

1. The AI Chatbot App User identifies the launcher command or installed application entry point supplied by the package.
2. The user invokes the installed launcher.
3. The launcher starts the packaged unsupported AI chatbot application.
4. The user observes that the chatbot application is running.
5. The user continues their work inside the launched chatbot application.

Failure and recovery path

1. If the chatbot application does not start, the user observes the command or process failure result, including an exit code where provided.
2. The user confirms that the package installation completed successfully and that required package dependencies are satisfied.
3. The user retries the launcher after correcting the installation or package-content issue.
4. If the packaged chatbot application still cannot be started, the failure remains a package or application runtime issue; deb-ai-app does not represent the application as successfully launched.

Flow 3 — Review package guidance before installation

Persona: Debian Package Builder
Starting context: The builder needs to understand whether deb-ai-app is appropriate for their local system.

1. The builder opens the public Landing page.
2. The builder reviews the package purpose, target Debian-based environment, available package metadata, and installation instructions.
3. The builder checks whether their system has dpkg and apt available.
4. The builder decides whether to obtain and install the available .deb package.
5. If the package is available and compatible, the builder continues with Flow 1.
6. If package availability, metadata, or target compatibility cannot be confirmed, the builder does not proceed with installation until the relevant issue is resolved.

6. Visuals Colors and Theme

Muse: Rasmus Andersson
Headline: Unsupported AI chatbots. Installed.

The visual direction shall express a precise Linux packaging tool for a solo power user. The interface should feel engineered, technical, self-reliant, and quietly defiant rather than corporate or promotional.

Colour tokens

Blue and indigo tones are prohibited. The design shall not use a white or near-white page ground, gradients, glassmorphism, frosted surfaces, blurred panels, or soft drop shadows.

Typography

• Headings: Space Grotesk, 700 weight, -0.03em tracking, sentence case.
• Sub-headings: Space Grotesk, 500 weight.
• Body: Inter Tight.
• Monospace labels, commands, versions, checksums, and sizes: JetBrains Mono, 500 weight, tabular numerals.
• Type scale: 88 / 64 / 40 / 24 / 17 / 15 / 13 px.
• Hero heading: 88px with 1.02 line height.
• Body copy: 15px with 1.55 line height.
• Mono labels: 12–13px with 0.08em tracking and uppercase treatment where used as labels.

Shape and surface language

• Use 1px hairline borders instead of shadows.
• Use a 6px radius for buttons and inputs.
• Use a 10px radius for panels.
• Use a 0px radius for terminal panes and manifest tables.
• Use rectangular buttons with a 45-degree cut bottom-right corner.
• Do not use pills.
• Use a 4px tangerine rule to identify an active section.
• Use dotted 1px row rules for package manifest and compatibility data.

Layout

• Use a 12-column grid within a 1280px content container.
• Provide a persistent 72px left rail with vertically rotated JetBrains Mono section numbers 01–05.
• Mark the active section in the rail using a 2px tangerine bar.
• Use an asymmetric 7/5 hero split.
• Use an 8/4 split for installation and package-manifest content.
• Use full-bleed tangerine section rules with section labels positioned to the far left.
• Avoid centred hero composition and top-navigation-bar conventions.

Imagery and content treatment

• Use no photography, stock people, 3D blobs, particle fields, or generic decorative graphics.
• Use product-relevant imagery only:
  • Terminal transcripts
  • Debian package manifest rows
  • Dependency trees
  • Exit-code output
  • A file tree for the installed package path where known
  • A schematic package lifecycle diagram
  • A ruled compatibility table for bundled chatbot applications where known
• Render application logos only as 24px monochrome glyphs when verified app identities are available.
• Do not invent application names, logos, package paths, checksums, package sizes, or compatibility statuses.

7. Signature Design Concept

The Landing page shall present the installation as an observable system event rather than marketing copy.

The public entry uses a 7/5 asymmetric hero on the graphite background:

• The left seven columns contain the three-line Space Grotesk heading:
  • Unsupported AI chatbots.
  • Installed.
• Installed. uses tangerine #FF5A1F.
• A concise body line explains that deb-ai-app is a Debian package for installing and running unsupported AI chatbot applications.
• The primary action is a tangerine, cut-corner package acquisition control.
• Package metadata beneath the action uses JetBrains Mono and is populated only with verified package values.

The right five columns contain a square-cornered terminal pane framed by a #2A2D31 hairline. The terminal shows a package installation command using the actual artifact filename when available. It concludes with an installed-state output line and lime cursor block.

Below the hero, the Landing page pairs a sticky ruled package manifest table with a corresponding terminal transcript. The table and transcript share aligned rows to connect package metadata, installation commands, dependency recovery, and installation results.

This concept recomposes only accepted package acquisition, installation, recovery, and launch guidance. It does not create a chatbot service, account system, or additional destination.

8. Interaction Model & Motion Direction

Interaction Model: Animated
Motion Tempo: restrained
Hero Dimensionality: flat

Landing Hero Motion Brief

• Focal subject: A terminal installation command for the deb-ai-app .deb package.
• Input → transformation → outcome thesis: The package filename is entered into a terminal command; the local package installation progresses through visible output; the terminal reaches an installed state that enables the user to continue to the application launcher.
• Motion vocabulary: A single purposeful type-in sequence, a lime terminal cursor block, and manifest rows revealed using clip-path wipes.
• Composed first frame: The hero loads as a complete graphite 7/5 layout with the left-side headline, package action, package metadata region, and framed terminal pane already composed. The terminal command is ready to type.
• Hero motion: The package filename types into the dpkg -i command. A lime cursor block follows the entered text. The terminal then shows a restrained installation result ending in an installed-state line. The terminal becomes static after completion.
• Scroll behavior: Manifest rows wipe in from the left with a 30ms stagger using clip-path only. They must not fade or translate.
• Feedback behavior: Copy-to-clipboard interaction produces a 200ms lime tick flash on the associated row border.
• Timing: Use 140ms cubic-bezier(0.2,0,0,1) for interface state changes. Do not use bounce, hover lift, elastic effects, or decorative motion.
• Reduced-motion state: Disable terminal typing and row wipe sequences. Render the terminal command and installed-state output in their completed static form. Retain only immediate state changes required for accessibility and feedback.

9. Non-Functional Requirements

NFR-1 — Debian package compatibility

• Provenance: required_inference
• Requirement: deb-ai-app shall target a Debian-based system where dpkg and apt are available.
• Rationale: Debian package installation and dependency recovery require the accepted Debian package-management environment.

NFR-2 — Debian package format

• Provenance: explicit
• Requirement: The delivered package artifact shall use the .deb format.
• Rationale: .deb format is an explicit product constraint.

NFR-3 — Installability

• Provenance: explicit and required_inference
• Requirement: The .deb package shall be installable using standard Debian package tooling on a compatible target system.
• Rationale: A package that cannot be installed cannot satisfy the accepted installation outcome.

NFR-4 — Runnable packaged application

• Provenance: explicit
• Requirement: Following successful package installation, the package shall provide a means to launch the packaged unsupported AI chatbot applications.
• Rationale: The user’s explicit outcome is to install and run unsupported AI chatbot applications.

NFR-5 — Truthful package and support representation

• Provenance: explicit constraint
• Requirement: The product shall identify the targeted applications as unsupported and shall not represent them as officially supported by a vendor, Debian distribution, or chatbot provider.
• Rationale: The package is explicitly intended for unsupported AI chatbot applications.

NFR-6 — Failure observability

• Provenance: required_inference
• Requirement: Installation and launch failures shall remain observable through package-manager, command, process, or exit-code output available in the target operating environment.
• Rationale: The user must be able to distinguish successful installation and launch from a failed result and recover through the accepted local tooling.

NFR-7 — Public access to package guidance

• Provenance: required_inference
• Requirement: The Landing page shall be accessible without authentication.
• Rationale: The package acquisition and installation guidance is public and does not require durable user-specific state.

10. Tech Stack

Package delivery

• Debian package format: .deb
• Package installation tooling: dpkg
• Dependency recovery tooling: apt
• Target environment: Debian-based Linux systems with dpkg and apt available

Package contents

• Unsupported AI chatbot application sources or binaries suitable for inclusion in the package.
• Package launcher or wrapper required to invoke the packaged chatbot application after installation.
• Debian package metadata and dependency declarations required for installation.

Landing page

• Presentation technology: [Default — not specified by user] Static web-compatible HTML, CSS, and JavaScript may be used to deliver the public Landing page.
• No application backend is required for the current scope unless package artifact hosting or metadata generation requires one.
• No application database is required for the current scope.
• No Kubernetes deployment is required for the current scope.
• No account, authentication, authorization, or role-management technology is required for the current scope.

11. Assumptions and Constraints

Hard constraints

• The deliverable must be a .deb package format.
• The package must enable users to install and run unsupported AI chatbot applications.
• The package targets Debian-based systems.
• The package installation path relies on dpkg and may rely on apt for dependency recovery.
• The system must not imply official support for the packaged AI chatbot applications.
• The current custom page contract contains exactly one public page: Landing.
• The Landing page does not require authentication.

Required assumptions

• [Required inference] A compatible Debian-based target system has dpkg and apt available.
• [Required inference] The unsupported AI chatbot application sources or binaries intended for packaging are available to the package build process.
• [Required inference] The package build defines the launcher or command used to start each packaged chatbot application.
• [Required inference] Package metadata values such as