Praxis Architecture View

Container boundary: apps/linux_cardputer_zero

apps/linux_cardputer_zero is a C4 Container layer candidate boundary: it must behave as an application, service, data store, runnable unit, or independently deployable/executable system part, rather than a normal directory, code layering, or shared collection of tools.

Container candidate / high 0.1.30-alpha · 34aad0bffa2f / main

C4 hierarchical path

Current layer: Container, which explains an independently understandable application, service, data storage or running unit within the target system.
Upper layer: System Context, indicating which target software system the Container belongs to.
Lower layer: Component, explaining the entrance, interface, orchestration, adaptation, contract or shared object inside the Container.

Responsibility

apps/linux_cardputer_zero is an application-level Container candidate: repository evidence shows it is close to a runnable entry, a desktop/front-end/back-end application shell, or user-perceivable system capabilities.

Boundaries

The boundary comes from the warehouse path apps/linux_cardputer_zero. C4 Container is not equal to any package or code layer; only boundaries with applications, services, data storage, runtime portals, deployment units, external interfaces or independent execution semantics enter this layer. Ordinary configuration files, document directories, CI directories, warehouse management files and pure code layering can only be used as evidence or software structure model objects, not as Containers.

Relationship

Depends on other Containers: apps/esp32_lvgl.
Contains 5 candidate component view objects, 0 run/collaboration links, and 0 run or build nodes.

Relationship with business complexity

This Container is not the business use case itself; it only explains the internal application/service/data storage/operation unit of the software system through which the business capability enters or passes.
If the Use Case in the organization/process model refers to this boundary, how it enters this Container should be explained in the Use Case drill-down document instead of writing the business process into the C4 Container diagram.

Correlation with technical complexity

Corresponds to the software structure model Package Diagram: docs/engineering/package-diagrams/apps-linux_cardputer_zero/package-diagram.html.
Continue to enter the software structure model to view drill-down UML, structural collaboration, running links and complexity candidate points.

C4 Container diagram

flowchart LR
  container["apps/linux_cardputer_zero"]
  dependency_1["apps/esp32_lvgl"]
  container --> dependency_1

Explanation of elements in the diagram

apps/linux_cardputer_zero

Container · high

This node in the figure represents the C4 Container of apps/linux_cardputer_zero; the current document records 5 component drill-down entries, 0 running collaboration threads, and 0 running or build nodes.

Responsibility: apps/linux_cardputer_zero is an application-level Container candidate: repository evidence shows it is close to a runnable entry, a desktop/front-end/back-end application shell, or user-perceivable system capabilities.
Boundaries: The boundary comes from the warehouse path apps/linux_cardputer_zero; the entry, service interface, application code, running configuration and deployment evidence under this path jointly support it to enter the Container layer. Ordinary configuration files, document directories or pure code layers will not form Containers alone.
Relationship meaning: The figure points from apps/linux_cardputer_zero to the external boundary, indicating that this runnable boundary will call, reference or depend on other Containers; these relationships are used to determine deployment, interfaces and change impacts.
Why it belongs to this layer: The node enters the Container layer because the local warehouse evidence shows that it has applications, services, data storage, running portals, deployment units, external interfaces, or independent execution semantics; not because it is just a directory or package.
Drill-down intention: Drill down from apps/linux_cardputer_zero to Component to view the decomposition of responsibilities within the boundary.

apps/esp32_lvgl

Container · medium

apps/linux_cardputer_zero depends on apps/esp32_lvgl.

Responsibility: apps/linux_cardputer_zero depends on apps/esp32_lvgl.
Boundaries: apps/esp32_lvgl does not belong to the internal boundaries of apps/linux_cardputer_zero; it is just a dependent adjacent module in the current graph.
Relationship meaning: apps/linux_cardputer_zero -> apps/esp32_lvgl indicates that there are cross-border calls, references or configuration dependencies in the local warehouse evidence; it illustrates the direction of technical collaboration, but cannot independently prove the business process relationship.
Why it belongs to this layer: apps/esp32_lvgl is projected as an adjacent Container candidate by path ownership, rather than apps/linux_cardputer_zero internal Component.
Drill-down intention: Enter the independent Container document of apps/esp32_lvgl to view its own responsibilities and evidence; if there is no independent document, it will only be regarded as an external dependency fact.

Can drill down to C4

Component responsibility: apps/linux_cardputer_zero contains

Enter Component responsibility: apps/linux_cardputer_zero can answer "Container boundary: which internal components are hosted by apps/linux_cardputer_zero". Focus on portals, orchestration, adaptation, contracts, and shared objects rather than browsing the entire file.

Explain the key responsibility units inside apps/linux_cardputer_zero from the C4 Component layer: entry, page, command, interface, registry, adapter or shared object.

Code anchor point: apps/linux_cardputer_zero details

Enter the code anchor point: apps/linux_cardputer_zero to trace the architectural responsibility of the container boundary: apps/linux_cardputer_zero to the specific file/symbol anchor point; only when you need to determine the implementation entry or the impact of the change, you should drill down to Code.

Explain a few key code anchors in apps/linux_cardputer_zero from the C4 Code layer. The Code layer is not a code browser and is only used when you need to understand how architectural components fall into specific files/symbols.

Associated software structure model

apps/linux_cardputer_zero Package Diagram related_engineering

View the boundaries, dependencies and complexity candidates of the software structure package/module to which the Container belongs.

Evidence

apps/linux_cardputer_zero/APP_SHELL_MANIFEST.md
apps/linux_cardputer_zero/CMakeLists.txt
apps/linux_cardputer_zero/packaging/trailmate-cardputer-zero-applaunch
apps/linux_cardputer_zero/packaging/trailmate-cardputer-zero.desktop
apps/linux_cardputer_zero/packaging/trailmate-cardputer-zero.png
apps/linux_cardputer_zero/README.md
apps/linux_cardputer_zero/src/cardputer_zero_input_method_port.cpp
apps/linux_cardputer_zero/src/cardputer_zero_input_method_port.h

Judgment basis

This boundary must be supported by running entry, build/deployment configuration, service interface, application entry, data storage or independent execution evidence; directory name, number of files or number of dependencies alone are not enough to establish.
When there is a lack of running, deployment, interface or data storage evidence, the generation process will reduce the confidence or not generate independent Containers.