Task: Implement the AppImage Integration feature

TASK-DESCRIPTION

Create: sources/integration/appimage_integrator.h
Create: sources/integration/appimage_integrator.cpp
Create: sources/tools/appimage_integrate.cpp
Create: scripts/program-install.sh
Create: tests/integration_plan_test.cpp
Create: tests/70-integration-sandbox.sh
Create: tests/80-desktop-provenance.sh
Modify: sources/CMakeLists.txt
Modify: Makefile The integrator plans, installs, uninstalls, runs, and audits an AppImage integration, and implements the requirements in prompts/features/09-appimage-integration.md. Every test runs under a temporary $HOME, and the tools install into $HOME/.local/bin, so a launcher action has a stable target.

TASK-OUTPUT

Produce the complete new content of these files in this order, then the VERIFICATION: line: 1. sources/integration/appimage_integrator.h 2. sources/integration/appimage_integrator.cpp 3. sources/tools/appimage_integrate.cpp 4. scripts/program-install.sh 5. tests/integration_plan_test.cpp 6. tests/70-integration-sandbox.sh 7. tests/80-desktop-provenance.sh 8. sources/CMakeLists.txt 9. Makefile

TASK-CONTEXT

Best practice for integration is documented in documents/10-appimage-desktop-integration.md. An install writes only under the user’s home and requires no root; make install copies each program through a temporary name so replacing a running binary cannot fail.

TASK-FILES

Operation	Path
create	`sources/integration/appimage_integrator.h`
create	`sources/integration/appimage_integrator.cpp`
create	`sources/tools/appimage_integrate.cpp`
create	`scripts/program-install.sh`
create	`tests/integration_plan_test.cpp`
create	`tests/70-integration-sandbox.sh`
create	`tests/80-desktop-provenance.sh`
modify	`sources/CMakeLists.txt`
modify	`Makefile`

TASK-VERIFY

Run: make test from the repository root.
Expected: exit status 0, and tests/70-integration-sandbox.sh writes only under its temporary home.

TASK-FEATURES

prompts/features/09-appimage-integration.md

TASK-ACCEPTANCE

APPIMAGE-INTEGRATION-R001
APPIMAGE-INTEGRATION-R005
APPIMAGE-INTEGRATION-R013
APPIMAGE-INTEGRATION-R015
APPIMAGE-INTEGRATION-R016
APPIMAGE-INTEGRATION-R021
APPIMAGE-INTEGRATION-R023
APPIMAGE-INTEGRATION-R041

OUTPUT: the nine complete files in the order listed, ending with the VERIFICATION: line.