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ImpTune/.planning/phases/08-nyquist-validation-track/08-04-SUMMARY.md
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kawa 55516ee10f Commit initial
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phase, plan, subsystem, tags, requires, provides, affects, tech_stack, key_files, decisions, metrics, requirements_completed
phase plan subsystem tags requires provides affects tech_stack key_files decisions metrics requirements_completed
08-nyquist-validation-track 04 validation-audit
nyquist
audit
phase-4
script-generation
validation
attestation-gap
phase provides
08-03 Phase 3 Nyquist Record pattern + historical-gap closure methodology
Phase 4 Nyquist Record (5 rows, all pass) in .planning/phases/04-script-generation/04-VALIDATION.md
Phase 4 nyquist_compliant=true audited 2026-04-13
Faithful recording of Phase 10 RTVAL-02/03/04 attestation-only audit-trail damage as Notes on SYSTEM-context rows (no hiding, no upgrade to fail-fix)
.planning/phases/04-script-generation/04-VALIDATION.md
added patterns
Nyquist Record audit table reused from 08-01/02/03: # | Criterion | Observable Check | Evidence | Status | Notes
Attestation-gap citation pattern: pass row + explicit Notes clause citing STATE.md 2026-04-13 + RTVAL-02/03/04
created modified
.planning/phases/08-nyquist-validation-track/08-04-SUMMARY.md
.planning/phases/04-script-generation/04-VALIDATION.md
Derived 5 rows: one per SCRPT-0x success criterion from v1.0-ROADMAP.md Phase 4 (SCRPT-01..05). No extra historical-gap rows — Phase 4 shipped with 12/12 truths VERIFIED in 04-VERIFICATION.md and no kickoff-surfaced defects of its own.
All 5 rows pass because Phase 10 signed off the runtime half with explicit attestation-gap acknowledgement (plan 10-03 commit cd2df1e). Per plan 08-04 directive, audit faithfully records the weakened audit trail in Notes rather than inflating to fail-fix-v1.1 — this mirrors the locked decision in STATE.md and the user's explicit approval of the attestation pattern.
Rows 1/2/3 (SCRPT-01/02/03) each cite Phase 10 RTVAL-02/03/04 respectively, with Notes explicitly stating 'attestation-only per STATE.md 2026-04-13' and naming the missing artifacts (IntuneManagementExtension.log excerpt, rtval-03-detection.png, rtval-04-uninstall-log.txt, rtval-04-uninstall-status.png).
Row 4 (SCRPT-04 UAC) scoped narrowly: the SYSTEM-branch (skip elevation) was exercised in RTVAL-02 attestation-only; the user-interactive UAC dialog branch is NOT covered by Phase 10 at all and remains a Manual-Only Verification. Notes state this delineation explicitly.
Row 5 (SCRPT-05 WOW64) recorded pass with Note that the relaunch branch itself is not directly observable from the RTVAL-02 attestation (technician only attested install succeeded, not that SysNative relaunch was taken). Template-level positional correctness (guard before pnputil) is fully pytest-automated. Phase 11 rollout owns the full WOW64 trace.
No historical-gap bonus rows (unlike 08-02 row 6 drivers/upload 500). Phase 4 had no kickoff-surfaced defects beyond its own SCRPT-0x criteria.
tasks_completed tasks_total duration_minutes completed_date
1 1 7 2026-04-13

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.md now contains a ## Nyquist Record section (placed above Validation Sign-Off, below Manual-Only Verifications).
  • 5 rows: one per SCRPT-0x success criterion from milestones/v1.0-ROADMAP.md Phase 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.md with 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, added nyquist_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:

  1. Test evidence (preferred): 5/5 rows cite tests/test_script_generator.py invocations — 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.
  2. 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_uninstall line 70, render_detect line 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).
  3. Dated manual-check evidence: 04-VERIFICATION.md (2026-04-10, 12/12 truths VERIFIED) referenced per-row for cross-traceability.
  4. Runtime evidence (attestation-weakened): Phase 10 RUNTIME-VALIDATION.md cited 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 Record heading — FOUND in file (grep returned 1 match)
  • nyquist_audited: frontmatter key — FOUND in file
  • attestation-only per STATE.md 2026-04-13 language — FOUND on rows 1/2/3/4/5 Notes columns
  • Commit 60654af — FOUND in git log
  • No source code files touched (plan constraint) — only .planning/phases/04-script-generation/04-VALIDATION.md modified
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