docs(08-04): complete Phase 4 Nyquist audit plan
- Add 08-04-SUMMARY.md with 5/5 pass outcome - Faithfully records Phase 10 RTVAL-02/03/04 attestation-only gap in Notes - Update STATE.md (advance plan, add decision, record session) - Update ROADMAP.md Phase 08 progress (4/8 summaries)
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gsd_state_version: 1.0
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milestone: v1.1
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milestone_name: Hardening & Validation
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current_plan: 4
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current_plan: 5
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status: completed
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stopped_at: Completed 08-03-PLAN.md (Phase 3 Nyquist audit)
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last_updated: "2026-04-13T14:03:22.405Z"
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stopped_at: Completed 08-04-PLAN.md (Phase 4 Nyquist audit)
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last_updated: "2026-04-13T14:07:02.282Z"
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last_activity: 2026-04-13
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progress:
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total_phases: 4
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completed_phases: 2
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total_plans: 17
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completed_plans: 9
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completed_plans: 10
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---
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# Project State
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@@ -27,7 +27,7 @@ See: .planning/PROJECT.md (updated 2026-04-13 after v1.0 milestone)
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Milestone: v1.1 Hardening & Validation
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Phase: 08 — Nyquist Validation Track — IN PROGRESS (1/8 plans complete)
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Current Plan: 4
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Current Plan: 5
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Total Plans in Phase: 8
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Status: Phase 08 active — 08-01 complete, NYQ-01 ticked
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Decision: 08-01 closed Phase 1 Nyquist audit with 14/14 pass rows; prior real-Intune spike (row 14) resolved PASS by citing Phase 10 RTVAL-01 sign-off rather than fail-fix-v1.1.
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@@ -80,6 +80,7 @@ Full decision log in PROJECT.md Key Decisions table. Milestone v1.0 decisions ar
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- [Phase 08-nyquist-validation-track]: 08-01: Phase 1 Nyquist Record complete with 14/14 pass rows; row 14 (upload-to-real-Intune spike) resolved PASS citing Phase 10 RTVAL-01 sign-off rather than fail-fix-v1.1
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- [Phase 08-nyquist-validation-track]: 08-02: Phase 2 Nyquist Record complete with 6/6 pass rows; POST /drivers/upload 500 historical gap (row 6) closed as pass citing Phase 9 UX-01 fixing commits d1de839 + 10ee09a + 72c6a98
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- [Phase 08-nyquist-validation-track]: 08-03: Phase 3 Nyquist Record complete with 10/10 pass rows; PRNT-03 Alpine.js IP->port historical gap (row 3) closed as pass citing Phase 9 UX-02 Playwright fixing commits 322fc20 + 37a06da
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- [Phase 08-nyquist-validation-track]: 08-04: Phase 4 Nyquist Record complete with 5/5 pass rows; SYSTEM-context rows (SCRPT-01/02/03/04/05) cite Phase 10 RTVAL-02/03/04 with explicit attestation-only caveat per STATE.md 2026-04-13 faithfully recorded in Notes
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### Active Blockers
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@@ -93,6 +94,6 @@ None. BLOCKER-01 resolved 2026-04-13 via commits 74535ea (HMAC over IV+ciphertex
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## Session Continuity
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Last session: 2026-04-13T14:03:22.399Z
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Stopped at: Completed 08-03-PLAN.md (Phase 3 Nyquist audit)
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Last session: 2026-04-13T14:07:02.277Z
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Stopped at: Completed 08-04-PLAN.md (Phase 4 Nyquist audit)
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Resume file: None
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---
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phase: 08-nyquist-validation-track
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plan: 04
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subsystem: validation-audit
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tags: [nyquist, audit, phase-4, script-generation, validation, attestation-gap]
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requires:
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- phase: 08-03
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provides: "Phase 3 Nyquist Record pattern + historical-gap closure methodology"
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provides:
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- "Phase 4 Nyquist Record (5 rows, all pass) in .planning/phases/04-script-generation/04-VALIDATION.md"
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- "Phase 4 nyquist_compliant=true audited 2026-04-13"
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- "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)"
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affects:
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- .planning/phases/04-script-generation/04-VALIDATION.md
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tech_stack:
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added: []
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patterns:
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- "Nyquist Record audit table reused from 08-01/02/03: # | Criterion | Observable Check | Evidence | Status | Notes"
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- "Attestation-gap citation pattern: pass row + explicit Notes clause citing STATE.md 2026-04-13 + RTVAL-02/03/04"
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key_files:
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created:
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- .planning/phases/08-nyquist-validation-track/08-04-SUMMARY.md
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modified:
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- .planning/phases/04-script-generation/04-VALIDATION.md
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decisions:
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- "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."
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- "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."
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- "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)."
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- "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."
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- "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."
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- "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."
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metrics:
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tasks_completed: 1
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tasks_total: 1
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duration_minutes: 7
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completed_date: 2026-04-13
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requirements_completed: []
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---
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# Phase 08 Plan 04: Phase 4 Nyquist Audit Summary
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**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.
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## What Shipped
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- `.planning/phases/04-script-generation/04-VALIDATION.md` now contains a `## Nyquist Record` section (placed above Validation Sign-Off, below Manual-Only Verifications).
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- 5 rows: one per SCRPT-0x success criterion from `milestones/v1.0-ROADMAP.md` Phase 4 goal block.
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- 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.
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- **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.
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- Frontmatter updated: `nyquist_compliant: false -> true`, added `nyquist_audited: 2026-04-13`, `nyquist_auditor: Claude (gsd-executor, plan 08-04)`.
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- All historical sections (Test Infrastructure, Sampling Rate, Per-Task Verification Map, Wave 0 Requirements, Manual-Only Verifications, Validation Sign-Off) preserved verbatim.
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## Audit Outcome
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| Status | Count |
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|---------------|-------|
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| pass | 5 |
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| fail-fix-v1.1 | 0 |
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| deferred-v1.2 | 0 |
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| wont-do | 0 |
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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.
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## Evidence Strategy Used
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Priority order from CONTEXT.md was honored:
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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.
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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).
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3. **Dated manual-check evidence**: 04-VERIFICATION.md (2026-04-10, 12/12 truths VERIFIED) referenced per-row for cross-traceability.
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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.
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No row relied on "code looks right" — every check is an actual pytest invocation plus a cited runtime report.
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## Cross-Reference with 04-VERIFICATION.md
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`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:
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- Row 1 (SCRPT-01) <- truths 1 (pnputil+cmdlets), 4 (duplex mapping), 5 (idempotency), 8 (install endpoint)
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- Row 2 (SCRPT-02) <- truths 6 (Remove-* ordering), 9 (uninstall endpoint)
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- Row 3 (SCRPT-03) <- truths 7 (Write-Output+exit), 10 (detect endpoint)
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- Row 4 (SCRPT-04) <- truth 3 (SYSTEM vs user + UAC)
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- Row 5 (SCRPT-05) <- truth 2 (WOW64 positional guard)
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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.
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## Attestation-Gap Recording (Key Point for 08-08 Rollup)
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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`:
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- **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.
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- **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".
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- **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".
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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.
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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.
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## Deviations from Plan
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**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.
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No Rule 1-4 deviations triggered. No auth gates.
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## Authentication Gates
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None.
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## Self-Check: PASSED
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- `.planning/phases/04-script-generation/04-VALIDATION.md` — FOUND (modified)
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- `## Nyquist Record` heading — FOUND in file (grep returned 1 match)
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- `nyquist_audited:` frontmatter key — FOUND in file
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- `attestation-only per STATE.md 2026-04-13` language — FOUND on rows 1/2/3/4/5 Notes columns
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- Commit `60654af` — FOUND in `git log`
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- No source code files touched (plan constraint) — only `.planning/phases/04-script-generation/04-VALIDATION.md` modified
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