Debian/Ubuntu packaging and repository distribution pipeline

[sebastienrousseau]

User Story

As a Linux platform administrator, I want first-class Debian and Ubuntu package distribution, so that installation and upgrades are managed consistently.

Acceptance Criteria

1. Given a new release, when packaging pipeline runs, then Debian and Ubuntu artifacts are generated successfully.
2. Given package repository metadata is published, when clients install from repository, then installation succeeds.
3. Given an upgrade from prior release, when package manager performs upgrade, then service configuration is preserved.
4. Given package integrity validation runs, when artifact is tampered, then installation is rejected.
5. Given package install fails, when diagnostics are checked, then actionable failure reason is available.

[sebastienrousseau]

Triage owner suggestion: Packaging and Release Engineering Team.\n\nRationale: this issue’s primary outcomes align with this ownership area.

[sebastienrousseau]

Closing per maintainer decision: folding v0.0.4 milestone scope into v0.0.3 closure track.

[sebastienrousseau]

Reopening for strict correctness: this scope is not fully implemented end-to-end in the current v0.0.3 branch.