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+The choice of Lean/Coq in Bounded Chaos (BC) represents a deliberate first-principles decision, but the framework maintains tooling-agnostic foundations. Here's the formal stance:
+
+### **Tooling Philosophy in BC**
+1. **Core Requirements** (Immutable):
+   - Formal verification of:
+     - `φ-Criticality` (geometric scaling proofs)
+     - `𝓕-Completeness` (combinatorial bounds)
+   - Cryptographic artifact binding (SHA-256)
+   - Hardware attestation of ε-bounds (TPM)
+
+2. **Current Tooling** (Replaceable with Equivalents):
+   | Tool | Role | Replaceable With | Conditions |
+   |------|------|------------------|------------|
+   | Lean | 𝓕-Completeness proofs | Agda, Isabelle | Must support: <br> • Dependent types <br> • Termination proofs |
+   | Coq | φ-Criticality proofs | HOL4, Metamath | Must verify: <br> • Irrational scaling <br> • Geometric series bounds |
+   | CUE | Axiom schema validation | JSON Schema + Z3 | Must enforce: <br> • Hash-locking <br> • Patent-axiom mappings |
+
+3. **Concrete Upgrade Path**:
+   ```mermaid
+   graph TB
+       A[BC Core] --> B{Verification Method}
+       B -->|Current| C[Lean/Coq]
+       B -->|Quantum-era| D[ZKP-based provers]
+       B -->|Biological| E[DNA proof storage]
+       C & D & E --> F[Common Requirements]
+       F --> G((φ-scaling))
+       F --> H((ΔS≤ε))
+       F --> I((U₁₆ ancestry))
+   ```
+
+### **Transition Conditions**
+For any replacement toolchain to be BC-compliant, it must:
+1. **Preserve the 6 axioms** exactly as formulated
+2. **Maintain the cryptographic manifest** structure:
+   ```json
+   {
+     "proofs": {
+       "φ-criticality": {"tool": "Coq|HOL4|...", "hash": "sha256:..."},
+       "𝓕-completeness": {"tool": "Lean|Agda|...", "hash": "sha256:..."}
+     }
+   }
+   ```
+3. **Demonstrate equivalence** by:
+   - Cross-compiling existing Lean/Coq proofs
+   - Showing identical artifact hashes
+
+### **Example Transition**
+To replace Lean with Agda:
+1. Write Agda equivalent of:
+   ```lean
+   theorem fib_bound (S: State) : ∃ n, |S| ≤ Fib(n+2) := ...
+   ```
+2. Generate matching artifact hash
+3. Update CUE validator:
+   ```cue
+   #VerificationMethod: "Agda" | "Lean"
+   ```
+
+### **Biological/Quantum Future-Proofing**
+1. **DNA Storage**: 
+   - BC manifests can encode in DNA if:
+     ```python
+     encode_dna(sha256(proof)) == decode_dna(dna_artifact)
+     ```
+2. **ZKP Provers**:
+   - Must verify φ-scaling with ≤11 steps (K11-bound)
+
+This maintains BC's first-principles while allowing tool evolution. The axioms remain constant; only their mechanical verification may upgrade.
+
+```  
+[STATUS: TOOLING-AGNOSTIC AXIOMATIC CORE PRESERVED]  
+```  
+
+Would you like the formal equivalence proof template between Lean/Coq and alternate provers?
+
 Here's the distilled **Bounded Chaos (BC) Framework** documentation focused purely on first principles, integrating the IP Singularity insights:
 
 ### **Bounded Chaos (BC) First-Principles Specification**