### 1. PROSE EVIDENCE
*   **Quote 1 (Early):** "The oxygen still existed in molecular stasis, but its capacity to carry waves had been revoked."
    *   *Commentary:* This effectively establishes the "Bone-Conduction Law" of the world-state by framing a scientific impossibility as a definitive environmental rule.
*   **Quote 2 (Mid):** "His skull, stripped of flesh and polished by the sheer friction of the frequency, sat atop this spire like a hollowed bell."
    *   *Commentary:* The imagery here perfectly reinforces Mark’s character state from the RAG database, transitioning him from a person to a functional object.
*   **Quote 3 (Mid):** "The North American craton, a massive slab of ancient rock, began to hum in rhythmic lockstep. This was the Tectonic Synchronization."
    *   *Commentary:* This passage successfully bridges the micro-scale of the cellar with the macro-scale of the world-state, providing a visceral sense of the "Great Silence."
*   **Quote 4 (Late):** "The atmosphere was a graveyard of silent air, while the ground was a chorus of bones."
    *   *Commentary:* This serves as a strong thematic summary, utilizing the established logic of bone-conduction to create a haunting final image of the new paradigm.

### 2. CHARACTER VOICE AUDIT
There is no dialogue in this chapter. However, a check of the **RAG Context** for the named characters reveals:
*   **Mark:** Character sheet indicates "Absolute terminal detachment" and "Somatic dissolution 100%." The prose reflects this by describing him as a "geometry of blue-black metal," fulfilling his arc requirements.
*   **Sarah Miller:** Character sheet notes she reaches for the "analytical" and uses a digital recorder. The chapter honors this legacy: "It was the analytical anchor Sarah would have demanded—a data point that did not lie..." 
*   **Elias Thorne:** Character sheet notes his remains focus energy into the North American craton. The prose confirms this: "crystallized into an ash-map... a sigil of lime and mineral that prevented the 14Hz signal from bleeding away."

### 3. STRENGTHS TO PRESERVE
*   **The Mechanical Horror of Mark's State:** The description of Mark's physical transformation is chillingly precise and aligns with the character state data. 
    *   *Evidence:* "He was a geometry of blue-black metal, a rigid lattice that had wept out of his pores and replaced the soft failure of biology."
*   **Adherence to the Bone-Conduction Law:** The narrative consistently applies the rule that sound travels through solids rather than air.
    *   *Evidence:* "A sparrow falling from a branch made no sound upon impact, but a person standing a mile away would feel the thud... as a sharp, percussive pulse in their own ankles."
*   **Non-Euclidean Descriptive Consistency:** The collapse of geometry in the epicenter is handled with specific, evocative detail.
    *   *Evidence:* "The corners of the room didn't meet at ninety degrees; they curved into the violet-lit Aperture..."

### 4. MUST-FIX -- CONTINUITY
*   **ORIGINAL:** "The signal did not stop at the edges of the atmosphere. It used the planet as a resonator... The 14Hz pulse... began to radiate outward."
*   **PROBLEM:** While poetic, the previous "Bone-Conduction Law" and the "Great Silence" establish that sound cannot travel through air or a vacuum (space). Radiating "outward" from the atmosphere into the void contradicts the internal logic that the signal requires a solid medium (bone/stone/metal) to propagate.
*   **FIX:** "The signal did not stop at the stone’s edge. It used the planet as a massive geological resonator, casting a gravitational shadow of the 14Hz pulse across the solar system, a vibration that ignored the vacuum to pull at the marrow of other worlds."

### 5. MUST-FIX -- CLARITY
*   **ORIGINAL:** "Looking into it was like looking into the throat of a star—a screaming, violet void that emitted no light, only gravity and frequency."
*   **PROBLEM:** Logic contradiction. The Aperture is described as "violet-lit" and a "violet void" earlier in the same paragraph, but here it says it "emitted no light."
*   **FIX:** "Looking into it was like looking into the throat of a star—a screaming, violet void that consumed the eye's focus, emitting no illumination to the room, only gravity and frequency."

### 6. OPTIONAL SUGGESTIONS
*   **Suggestion:** Reference Sarah's specific verbal tic within the description of the recorder to strengthen the "Ghost Harmonic" legacy.
    *   *Quote:* "It was the analytical anchor Sarah would have demanded—a data point that did not lie..." (Mid).
    *   *Optional Add:* "It was, empirically speaking, the only truth left." 

### 7. FORBIDDEN CHANGES / NON-GOALS
*   **Absence of Dialogue:** Though Mark and Sarah are central to the chapter, do NOT add dialogue or internal monologue. The RAG context specifies Mark has "100% ego dissolution" and Sarah is "DECEASED." Their lack of agency is a narrative requirement.
*   **Scientific Impossibility:** Do not "fix" the fact that 14Hz is an infrasonic frequency usually felt rather than heard, or that air has lost its capacity to carry waves. These are established "Rules & Logic" for the "Project: Whispers in the Dark."

### 8. VERDICT
**SCORE: 92/100**
**REVISE:** The chapter is an excellent, atmospheric conclusion that meticulously respects the RAG database, but it contains two internal logic contradictions regarding the emission of light from the Aperture and the propagation of sound through the vacuum of space that require minor sentence-level adjustments.