feat(lsp): implement Real-Time Virtual Site Map (VSM) and O(1) incremental patching

[PythonWoods-Dev]

Overview

This PR delivers the v0.22.0 milestone for the Zenzic Core. It grants the Language Server (ZLS) global topological awareness, enabling real-time feedback for structural rules like Z101 (Broken Link) and Z104 (File Not Found).

Architectural Implementation

• Synchronous VSM Initialization: The server now intercepts the workspace/workspaceFolders payload during the initialize handshake to perform a zero-threading build of the global VSM.
• O(1) Incremental Patching: Registered workspace/didChangeWatchedFiles. File creations, deletions, and updates trigger an $O(1)$ dictionary patch, avoiding full AST re-evaluations and preventing race conditions.
• Zero-Threading Policy Enforced: Discarded earlier proposals for background daemon threads. The VSM is maintained entirely within the synchronous stdio multiplexer loop.

Quality Gate: just verify passed. DQS 98/100.