release: cut V0.5-8 — DLM cross-node $ENQ GRANT, Alpha login+acceptance parity, SHOW USERS de-fab

[baron-3dl]

Release cut: OVMX V0.5-8

Bumps OVMX_PRODUCT_VERSION (src/libvms/include/ovmx_identity.h) and os-release VERSION/VERSION_ID V0.5-7 → V0.5-8 — the same minimal two-file bump the V0.5-7 cut (#837) made. 14 commits since the V0.5-7 tag.

Release notes are generated at tag time by tools/gen_release_notes.py (INV-LEDGER single-ledger — notes are never hand-committed to docs/); the roadmap narrative block + public site are the conductor's reconcile step (INV-0/INV-LEDGER). This PR therefore carries only the version stamps, matching prior cuts.

The V0.5-8 batch

Distributed Lock Manager — the cross-node ladder tops out at a real GRANT

• DLM rung-2: real cross-node $ENQ GRANT (vms-e8f1 / vms-17c, H4) #849 (vms-e8f1/vms-17c) — DLM rung-2 / H4: the first real cross-node $ENQ GRANT — node B holds a lock on A's behalf for A's CSID, $ENQ returns SS$_NORMAL over live SCS (no longer INV-6 "grants nothing"). The headline.
• vms-209: DLM harness H3 — cross-node $ENQ reaches node B's real executive (2296 not 2680) #845 (vms-209) — H3: a cross-node $ENQ reaches node B's real executive
• vms-4bd0: DLM harness H2 -- two real-executive QEMU nodes complete the full VMS$VAXcluster join #843 (vms-4bd0) — H2: two real-executive QEMU nodes complete the full VMS$VAXcluster join
• vms-534: DLM cross-node harness H1 — two real-executive nodes exchange 0x6007 HELLO over a socket netdev #842 (vms-534) — H1: two real-executive nodes exchange the 0x6007 HELLO over a socket netdev
• vms-4b6: DLM cross-node harness rung H0 — SCSD.EXE composes with a real executive #840 (vms-4b6) — H0: SCSD.EXE composes with a real executive
• docs: Alpha cross-node DLM wire oracle (vms-94c/vms-17c grounding) #841 — Alpha cross-node DLM wire oracle (observed SCS transport + documented GRANT semantics, Rule 8)

Alpha co-release parity

• Alpha DCL/SHOW acceptance parity — same shared battery on qemu-system-alpha (vms-f2c) #852 (vms-f2c) — Alpha DCL/SHOW acceptance parity: the same shared 11-command battery x86_64 runs, now on qemu-system-alpha
• vms.ko: guard BG fork-inherit tracepoints behind CONFIG_TRACEPOINTS (Alpha P0 + login parity) #847 — vms.ko guards BG fork-inherit tracepoints behind CONFIG_TRACEPOINTS (Alpha P0 modpost fix)

Authenticity (INV-6 de-fabrication)

• vms-6a1: SHOW USERS fails honestly with no executive (INV-6 fabrication fix) #839 (vms-6a1) — SHOW USERS fails honestly when the executive is absent (no more per-process fabricated user list)

Boot console fidelity

• vms-dec: kill boot-console newline spam (operator's echoed RETURNs) + type-during-boot regression gate #850 (vms-dec) — kill boot-console newline spam (the operator's echoed RETURNs) + a type-during-boot regression gate

Networking (layered-product promotion)

• vms-67f: TCP/IP Services as first-class layered product — build plan + roadmap #851 (vms-67f) — TCP/IP Services promoted to a first-class layered product (build plan + roadmap; 1.0 blocker)

Docs / ledger

• docs: Alpha C-RTL archive DECIDED — Option A (operator ruling) #745 — Alpha C-RTL archive DECIDED, Option A (operator ruling 2026-08-23)
• docs(vms-da0): OpenVMS GCC port × OVMX faithful-surface gap analysis #709 (vms-da0) — OpenVMS GCC port × OVMX faithful-surface gap analysis
• docs(roadmap): reconcile release block for V0.5-7 tag (INV-LEDGER) #838 — reconcile the release block for the V0.5-7 tag (INV-LEDGER)

Release-QA gate — ground-source host-KVM boot (NOT CI-green)

Built the bootable image from this tree (distro/Dockerfile.bootable, BUILD_RC=0) and booted the actual runtime under KVM on the workshop host (qemu-system-x86_64 -accel kvm -cpu host, x86_64), then ran the shared DCL/SHOW acceptance battery (tests/qemu/lib/dcl_acceptance_battery.sh):

RESULT: 43 passed, 0 failed
ALL DCL/SHOW ACCEPTANCE CHECKS PASSED

• Boots to Username:, SYSTEM/MANAGER authenticates over the ODS-2 ACP → interactive DCL $.
• Boot banner reads OpenVMX V0.5-8 (the version bump is live in the built image).
• SHOW USERS honest (vms-6a1: SHOW USERS fails honestly with no executive (INV-6 fabrication fix) #839): Total number of users = 1, lists SYSTEM — not empty, not fabricated.
• Console clean (vms-dec: kill boot-console newline spam (operator's echoed RETURNs) + type-during-boot regression gate #850 live): full boot + login + 11-command battery is 76 console lines with no blank-line flood.
• Every assertion carries a non-vacuous negative control (all NEGCTL lines pass).

Do not tag or publish from this PR — the conductor cuts the V0.5-8 tag and runs reconcile + publish (INV-0/INV-LEDGER).

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