Independent offline review

Scope and verdict

Reviewed inputs/index.html against inputs/ONE_PAGE.md only. The page was not edited. Verdict: APPROVE_WITH_P2. The three P2 findings below cover one dropped scan-scope condition and two fallback defects. No P0 or P1 finding was established.

The content audit mapped 83 source-backed page lines to ONE_PAGE.md lines. Eighty-two were OK; one drops a condition. The seven provider names and visible numeric tokens match the source. The status chips are distributed as required: COMTRADE 1 explicit restriction, IMF and ILOSTAT 2 unread terms pages, and 4 pending.

Findings

P2-1 — Scan result is broader than the documented scan scope

Evidence: inputs/index.html:768-769; inputs/ONE_PAGE.md:40.

The page labels the result as a sensitive-information scan with zero hits. The source names only email, phone, key, and local-path scans. With the broad label, a reader can infer that all sensitive-data categories were scanned. The failing scenario is a reader relying on this page as evidence that unlisted categories were checked. Name the four tested categories alongside the zero-hit result.

P2-2 — Reduced-motion scene does not update when IntersectionObserver is unavailable

Evidence: inputs/index.html:1096-1109, inputs/index.html:1010-1016, and inputs/index.html:1142-1143.

observeSections returns when IntersectionObserver is absent. In reduced-motion mode the animation loop is not started, and the scroll handler updates progress and the chapter label without calling drawStatic. In the Node stub, scrolling to the final chapter changed activeIndex to 7 while the canvas paint count stayed at 10,000. The failing scenario is a browser without IntersectionObserver and with reduced motion enabled: the decorative particle scene remains on the initial chapter while the reader scrolls.

P2-3 — Light preference is skipped if Canvas context creation fails

Evidence: inputs/index.html:793-797 and inputs/index.html:1134.

The early return for a null Canvas context runs before the code applies the light-scheme class. The Node stub confirmed that a light system preference leaves theme-light unset when Canvas is unavailable. The failing scenario is a light-scheme reader whose browser cannot create a 2D context: the readable page remains in the dark palette instead of using its light tokens. Apply the theme before the Canvas early return or provide a CSS preference fallback.

PASS/FAIL counts

|---|---:|---:|---|

| Source-backed claim map | 82 | 1 | 83 mapped lines; one scan-scope condition is dropped |

| Hygiene | 11 | 0 | No forbidden markers, contact data, URLs/references, external request APIs, eval, or document.write |

| Static JS/CSS review and JS syntax | 13 | 0 | Twelve static gates plus node --check passed |

| Node stub-canvas runtime | 20 | 2 | 22 checks; failures are P2-2 and P2-3 |

| Computed text contrast | 60 | 0 | Minimum 5.79:1; all computed pairs meet 4.5:1 |

| Checker aggregate | 33 | 1 | 34 gates; the single failed gate is the runtime group, which contains the two failures above |

Counts are grouped evidence views and are not additive across rows.

Technical review

File size: 44,139 bytes. The page has 8 sections and 8 scene names; every scene name has exactly one generator.
Node checks confirmed generator output length and coordinate range, deterministic output, 5,000 desktop particles, 2,500 particles below 768 px or at hardware concurrency 4, and a DPR cap of 2.
The smoothstep endpoints and midpoint passed. The source uses the expected sin(mix * PI) burst and dt-based exponential easing. Short-page and missing-section stubs produced finite draws without exceptions.
The standard reduced-motion IntersectionObserver path draws static scenes. visibilitychange cancels and resumes the animation loop. Pointer repulsion is bounded at a 120 px radius and a maximum force of 22 px.
No retained per-frame buffer growth was found across 20 stub draws. pointAt does create temporary coordinate arrays for particles; actual frame pacing was not measurable in this environment.
A null Canvas context hides the canvas and leaves the text page usable. The light-theme behavior on that path is finding P2-3.
CSS tokens, translucent text cards, wrapping rules for long tokens, focus/tap controls, canvas accessibility, and z-index order were inspected. The document has no interactive controls, so there are no tap targets or focusable controls to size.

UNVERIFIED

No browser or GUI was available. Actual visual quality, real 375 px horizontal overflow, and particle smoothness were not verified in a browser. The static CSS checks found auto-fit grids, wrapping rules, and no fixed page-width layout, but they do not substitute for a browser viewport measurement.
The Node canvas stub verifies code paths and draw counts, not actual Canvas compositing or frame timing.

Checker output

The independent checker is tools/check.py; its captured result is check.txt (PASS=33 FAIL=1 TOTAL=34). The failed aggregate gate records the two runtime fallback defects listed above.

VERDICT=APPROVE_WITH_P2 P0=0 P1=0 P2=3

JPGOV_DEMO_PAGE_REVIEW_DONE