### 1. PROSE EVIDENCE
**"The concrete had long since surrendered its rigidity, becoming a translucent membrane stretched thin over a violet-lit abyss."** (Early)
This effectively establishes the "Dimensional Thinning" world state by showing the physical breakdown of Euclidean space through evocative, sensory detail.

**"The skull had been hollowed by the frequency, its interior surfaces polished into a perfect resonance chamber."** (Early)
This reinforces the "Character State" of Mark as a "terminal conductor," stripping away the last vestiges of his humanity to serve a mechanical, cosmic function.

**"The Bone-Conduction Law had replaced the physics of the ear. The 14Hz frequency did not enter through the air; it rose through the soles of phantom feet..."** (Mid)
This quote explicitly integrates the "Rules & Logic" from the RAG context, transforming a technical world-building requirement into a haunting physical experience.

**"The distance between the lattice and the ash-map was simultaneously miles and millimeters."** (Mid)
The prose here successfully illustrates the "Non-Euclidean" nature of the cellar, creating a sense of vertigo that matches the collapse of reality.

**"The Earth had learned to hum, and Mark was the note that never ends."** (Late)
A strong concluding image that synthesizes Mark’s character arc—from human to biological bridge—into a singular, poetic finality.

---

### 2. CHARACTER VOICE AUDIT
**Sarah Miller:** No active dialogue; presence is limited to the "Ghost Harmonic" of her digital recorder as per the world state.
**Elias Thorne:** No active dialogue; remains are crystallized into a "geometric ash-map."
**Mark:** No active dialogue; individual ego has dissolved into the signal.

**Voice Signature Audit (RAG Analysis):**
The chapter adheres to the [voice-sig-sarah] requirement that she "Always carries a small digital recorder clipped to her belt." Even in death, the prose notes the recorder is "clipped to a phantom boundary where a belt might once have been." The absolute lack of dialogue for all characters is consistent with the "Great Silence" and "Absolute" NPC memory state established in the project context.

---

### 3. STRENGTHS TO PRESERVE
*   **The Tectonic Metaphor:** The description of the signal as a "geological stutter" and the "North American craton... in rhythmic lockstep" perfectly captures the scale of the horror.
*   **Artifact Integration:** The use of Sarah Miller’s recorder and Elias’s ash as "stabilization trinity" anchors (Late) honors the legacy of deceased characters while fulfilling the "Objects & Artifacts" requirement.
*   **Sensory Replacement:** The transition from air-conducted sound to bone-conduction is maintained with surgical consistency: "The air was dead... Sound, as a function of air-conducted pressure, had been abolished" (Mid).

---

### 4. MUST-FIX -- CONTINUITY
*   **ORIGINAL:** "To an outside observer, the world was a silent film." (Mid)
*   **PROBLEM:** The RAG "NPC Memory" state defines the impact as ABSOLUTE and global. There are no "outside observers" left who possess the "biological or mental autonomy required to... resist the signal."
*   **FIX:** "To the ghosts of human perception, the world was a silent film."

*   **ORIGINAL:** "...rhythmic inflation of lungs or the soft expansion of living tissue..." (Early)
*   **PROBLEM:** The RAG Character State for Mark specifies "biological remains have transitioned into a rigid, blue-black metallic lattice." Reference to "living tissue" even as a negative comparison feels slightly soft given he is at "100% somatic dissolution."
*   **FIX:** "It was not the soft expansion of biological tissue—that matter was now a cooling slurry inside a cage of blue-black metal—but a tectonic heave..."

---

### 5. MUST-FIX -- CLARITY
*   **ORIGINAL:** "The lattice was the final word in the Archive’s history—not written in ink, but etched in the resonance of the craton." (Late)
*   **PROBLEM:** While poetic, the jump from "The Archive" (a specific faction) to the "craton" (a geological structure) might obscure the fact that the Archive is now *extinct*.
*   **FIX:** "The lattice was the final word in the Archive’s history—a faction now extinct, its records replaced by the resonance of the craton."

---

### 6. OPTIONAL SUGGESTIONS
*   **REINFORCE SARAH'S VOICE:** (Optional) Since the recorder is a "Ghost Harmonic," describe the rhythm of the clicking using her specific vocabulary.
    *   **Quote:** "...the recorder generated a power-less Ghost Harmonic loop."
    *   **Suggestion:** Add: "It clicked with a precision Sarah would have deemed 'empirically incontrovertible.'"
*   **MARK'S LOG:** (Optional) Explicitly mention the "14Hz transmission — PAID" status from his character sheet through a sensory cue.
    *   **Quote:** "The transition from man to vestigial earth-sigil was complete."
    *   **Suggestion:** Add: "The debt of his biology was settled; the transmission was finalized and paid in full."

---

### 7. FORBIDDEN CHANGES / NON-GOALS
*   **Do not add dialogue:** The "Great Silence" world-state forbids verbal communication. Any attempt to make the characters speak would violate the "Bone-Conduction Law."
*   **Do not restore Mark’s humanity:** The transition is "Permanent: YES." His "absolute terminal detachment" is a core requirement of Ch-10.
*   **The 14Hz Frequency:** This specific number is the "Harmonic Baseline" and must not be altered for "scientific accuracy" or variety.

---

### 8. VERDICT
**SCORE: 92**
**JUSTIFICATION:** The chapter is an excellent atmospheric conclusion that utilizes almost every detail from the RAG context (the 14Hz signal, the ash-map, the recorder, the craton stabilization). I have flagged a minor continuity issue regarding "outside observers," as the world state implies no one is left to observe "outside" the signal's influence.

**VERDICT: REVISE**