mb3r-stack v0.3.4 candidate integration bundle

mb3r-stack v0.3.4

Candidate integration bundle that refreshes the pinned upstream pair after the Bering v0.3.4 release and the Sheaft v0.2.4 technical-preview release.

Included in this release:

• upgrades the bundle Bering pin from v0.3.3 to v0.3.4
• upgrades the bundle Sheaft pin from v0.2.3 to v0.2.4
• refreshes the stack chart, example profiles, GitHub/GitLab/Jenkins examples, adapter e2e checks, and acceptance harness constants for the new upstream pair
• keeps the stack adapter contracts on v1alpha1
• keeps Bering model/snapshot schema contract support on the published 1.0.0 and 1.1.0 lines

Pinned upstream packages:

• Bering v0.3.4 pinned to ghcr.io/mb3r-lab/bering@sha256:a825e7eb7d8a97610dd22cfea725e747e5b77f27663ed2972ac2978ee60d392d
• Sheaft v0.2.4 pinned to ghcr.io/mb3r-lab/sheaft@sha256:a434b5fb3f034a58455b20fa27a6976aa79d66340814f4cd81549b20bd8a5db8

Release evidence:

• Bering v0.3.4 release manifest: sha256:d7f4b3d61ff8e36bd370dadd351e51a2b2803677ae12a5e0fbb81faacfd01e20
• Bering v0.3.4 contracts pack: sha256:3865a8e7152c8a383f34d99334bc392cfd0ec793325b530d392723f67839ddbf
• Sheaft v0.2.4 release manifest: sha256:e358eb1a06f22e6880f9bb7fc51031fec6d42c2f950abb2fb66249dc6f35bfea
• Sheaft v0.2.4 compatibility manifest: sha256:d6a7b7413081eaa5771e67647908ac383316f661662ddd80e0a9c2269b7c050e
• Sheaft main commit 64ea26a records app-level sync against Bering v0.3.4; this bundle still pins the latest published Sheaft v0.2.4 package.

Operational note:

• The locally staged package set is mb3r-stack-0.3.4.tgz, mb3r-assets-0.3.4.tgz, release-manifest.json, SHA256SUMS.txt, and sbom.cdx.json.
• This remains a candidate integration bundle, not a GA support statement.