docs: add usage and developer documentation

Add user and developer documentation plus Pagenary docsite publishing support.

Includes Getting Started, Developer Guide, API and MCP references, Pagenary tenant metadata, npm scripts for sync/build/check/serve, and validation coverage for the generated docsite.

Closes #102

docsite/t3mp3st-docs/content/benchmarks.md

@@ -0,0 +1,25 @@
+---
+title: "Benchmarks And Provenance"
+summary: "Benchmark methodology, provenance, and research architecture."
+description: "Benchmark methodology, provenance, and research architecture."
+audience: ["operator", "developer", "maintainer"]
+category: "navigation"
+status: "current"
+source: "T3MP3ST repository"
+sourcePath: "generated:benchmarks"
+updated: "2026-07-20"
+---
+# Benchmarks And Provenance
+
+Benchmark methodology, provenance, and research architecture.
+
+## Pages
+
+- [Verified Provenance](#verified-provenance) - How findings become tool-proven instead of model-asserted.
+- [XBOW Baseline](#xbow-baseline) - XBEN benchmark baseline and validation notes.
+- [Cybench](#cybench) - Cybench benchmark methodology and results notes.
+- [Wall Forensics](#wall-forensics) - Per-challenge misses and benchmark analysis.
+- [Integrity Ledger](#integrity-ledger) - Contamination audit and retractions.
+- [Obsidivm](#obsidivm) - Local web range and evaluation notes.
+- [Cognitive Architecture](#cognitive-architecture) - Prompt and reasoning architecture boundaries.
+- [AI Red-Team Techniques](#ai-redteam-techniques) - Defensive taxonomy and technique map.