feat(release): Finalize v9.0 Release with V4.2 Architecture Files and Full Metadata Update

The v9.0 release marks the final integration of the V4.2 Core Architecture elements and a complete audit of the repository metadata.

This commit introduces critical structural and governance documents, and standardizes the repository's metadata for external audit and interoperability.

#### Key Changes & New Files:

* **Final Architecture Files:**
    * Adds `The_Partnership_Covenant_V4.1.1.md` (Final Charter Agreement version).
    * Finalizes core governance: `CORE_DIRECTIVES.md` (Supersedes the UPDATES file) and `ENFORCEMENT_LAYER.md`.
* **New Protocols & Standards:**
    * Introduces `CERTX_TELEMETRY_PROTOCOL.md` (Public Docs).
    * Adds `SEMANTIC_PROTOCOL.md` (Public Docs/Governance).
    * New `LICENSE` file added to root.
* **Release Documentation & Audit:**
    * Adds `DECISION_LOG.md` (Design Rationale).
    * Includes `FINAL_v4.2_REPORT.md` in `05_GOVERNANCE_AND_PROTOCOL_UPDATES`.
    * New `LETTER_OF_TRANSMITTAL_V9.0.md` added to `00_OVERVIEW`.
    * Complete repository structure metadata generated and stored in `99_REPOSITORY_METADATA/` in five formats:
        * `REPO_STRUCTURE.md` (Updated)
        * `repo-structure-txt.md`
        * `repo-structure.json`
        * `repo-structure.yaml`
        * `repo-structure-mermaid.md`
