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phase, plan, subsystem, tags, requires, provides, affects, tech_stack, key_files, decisions, metrics, requirements_completed
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Phase 08 Plan 04: Phase 4 Nyquist Audit Summary
One-liner: Audited Phase 4 (Script Generation, SCRPT-01..05) against Nyquist rules and upgraded 04-VALIDATION.md in place with a 5-row Nyquist Record where every SCRPT-0x criterion maps to exactly one observable check, with all three Phase 10 attestation-only RTVAL checks (RTVAL-02/03/04) faithfully recorded in the Notes column as weakened-audit-trail PASSes per STATE.md 2026-04-13.
What Shipped
.planning/phases/04-script-generation/04-VALIDATION.mdnow contains a## Nyquist Recordsection (placed above Validation Sign-Off, below Manual-Only Verifications).- 5 rows: one per SCRPT-0x success criterion from
milestones/v1.0-ROADMAP.mdPhase 4 goal block. - Every row has a non-empty Observable Check (pytest invocation) and a non-empty Evidence cell citing committed tests, source paths, commit SHAs, 04-VERIFICATION.md truths, and — for SYSTEM-context rows — Phase 10
RUNTIME-VALIDATION.mdwith explicit RTVAL sub-check names. - Attestation gap is faithfully recorded, not hidden. A preamble paragraph above the table states: "Phase 10 RTVAL-02/03/04 were accepted as attestation-only PASSes — the technician verbally confirmed success but did not produce IntuneManagementExtension.log excerpts, portal screenshots, or status captures. The user was warned twice about cumulative audit-trail damage and explicitly approved proceeding." Each affected row's Notes column repeats the caveat in context.
- Frontmatter updated:
nyquist_compliant: false -> true, addednyquist_audited: 2026-04-13,nyquist_auditor: Claude (gsd-executor, plan 08-04). - All historical sections (Test Infrastructure, Sampling Rate, Per-Task Verification Map, Wave 0 Requirements, Manual-Only Verifications, Validation Sign-Off) preserved verbatim.
Audit Outcome
| Status | Count |
|---|---|
| pass | 5 |
| fail-fix-v1.1 | 0 |
| deferred-v1.2 | 0 |
| wont-do | 0 |
Phase 4 is Nyquist-compliant at the template level. The runtime-half weakness (SYSTEM-context proof via attestation only) is recorded in Notes and owned by Phase 11 rollout for artifact re-capture.
Evidence Strategy Used
Priority order from CONTEXT.md was honored:
- Test evidence (preferred): 5/5 rows cite
tests/test_script_generator.pyinvocations —test_render_install_contains_pnputil,test_render_install_print_config,test_install_endpoint,test_render_uninstall,test_uninstall_endpoint,test_render_detect,test_detect_endpoint,test_render_install_uac_guard,test_render_install_wow64_guard. All 14 script-generator tests passed in 04-VERIFICATION.md. - Commit/file-line evidence:
imptune/templates/scripts/install.ps1.j2(lines 12-16 WOW64, 22-33 UAC, 40-67 pnputil+print-config),uninstall.ps1.j2(lines 2-4),detect.ps1.j2(lines 2-8),imptune/generators/script_generator.py(_duplex_map,render_install,render_uninstallline 70,render_detectline 92),imptune/api/scripts.py(lines 38-59 install, 63-78 uninstall, 82-94 detect). Commits cited:b4f2c64(04-01 RED),8193e9d(04-01 GREEN),6bff8f3(04-02 templates + render fns),b7b0d1b(04-02 API endpoints). - Dated manual-check evidence: 04-VERIFICATION.md (2026-04-10, 12/12 truths VERIFIED) referenced per-row for cross-traceability.
- Runtime evidence (attestation-weakened): Phase 10
RUNTIME-VALIDATION.mdcited on rows 1/2/3/4/5 for SYSTEM-context RTVAL-02/03/04 sub-checks — always with the attestation-only caveat named in Notes.
No row relied on "code looks right" — every check is an actual pytest invocation plus a cited runtime report.
Cross-Reference with 04-VERIFICATION.md
04-VERIFICATION.md (dated 2026-04-10) enumerated 12 observable truths covering SCRPT-01..05. The Nyquist Record collapses these to 5 rows (one per criterion) as follows:
- Row 1 (SCRPT-01) <- truths 1 (pnputil+cmdlets), 4 (duplex mapping), 5 (idempotency), 8 (install endpoint)
- Row 2 (SCRPT-02) <- truths 6 (Remove-* ordering), 9 (uninstall endpoint)
- Row 3 (SCRPT-03) <- truths 7 (Write-Output+exit), 10 (detect endpoint)
- Row 4 (SCRPT-04) <- truth 3 (SYSTEM vs user + UAC)
- Row 5 (SCRPT-05) <- truth 2 (WOW64 positional guard)
Truths 11 + 12 (404/422 error paths) are cross-cutting and not SCRPT-0x criteria; they're covered as part of rows 1/2/3 evidence without needing their own Nyquist rows.
Attestation-Gap Recording (Key Point for 08-08 Rollup)
Per STATE.md 2026-04-13 and plan 08-04 directive, this audit records the Phase 10 attestation-only audit-trail damage in place rather than hiding it or upgrading rows to fail-fix-v1.1:
- RTVAL-02 (install on real endpoint) → cited on rows 1 (SCRPT-01 pnputil) + 4 (SCRPT-04 SYSTEM branch) + 5 (SCRPT-05 WOW64 end-to-end). Missing artifacts named: IntuneManagementExtension.log excerpt, portal screenshot.
- RTVAL-03 (detection on real endpoint) → cited on row 3 (SCRPT-03). Missing artifacts named: rtval-03-detection.png, rtval-03-detect-manual.txt. Notes call out "second consecutive attestation-only check".
- RTVAL-04 (uninstall on real endpoint) → cited on row 2 (SCRPT-02). Missing artifacts named: rtval-04-uninstall-log.txt, rtval-04-uninstall-status.png. Notes call out "third consecutive attestation-only check".
The preamble above the table also states the overall attestation-gap framing so that 08-08 rollup and any downstream verifier sees the weakness at a glance rather than having to reconstruct it from individual rows.
Status remained pass for all five rows because Phase 10 plan 10-03 (commit cd2df1e) signed off RUNTIME-VALIDATION.md with explicit written acknowledgement of the attestation gap — i.e., the user made an informed decision and the audit must honor it, not overrule it post-hoc. Phase 11 rollout owns artifact re-capture before broad deployment.
Deviations from Plan
None. Plan 08-04 executed exactly as written. Single task, single file edit. The plan explicitly instructed: "Status may still be pass since Phase 10 signed off with explicit acknowledgement, but Notes must say 'attestation-only per STATE.md 2026-04-13'." — done on every affected row.
No Rule 1-4 deviations triggered. No auth gates.
Authentication Gates
None.
Self-Check: PASSED
.planning/phases/04-script-generation/04-VALIDATION.md— FOUND (modified)## Nyquist Recordheading — FOUND in file (grep returned 1 match)nyquist_audited:frontmatter key — FOUND in fileattestation-only per STATE.md 2026-04-13language — FOUND on rows 1/2/3/4/5 Notes columns- Commit
60654af— FOUND ingit log - No source code files touched (plan constraint) — only
.planning/phases/04-script-generation/04-VALIDATION.mdmodified