docs: add comprehensive OVSM LISP function glossary and documentation

Add complete documentation for OVSM's 91+ built-in functions including new
map-reduce functional programming stack and cryptographic operations.

## New Features

### Map-Reduce Functional Programming Stack (14 functions)
- find: Find first element matching predicate
- distinct: Remove duplicate elements
- flatten: Flatten nested arrays
- reverse: Reverse array order
- some: Check if any element matches
- every: Check if all elements match
- partition: Split array into matching/non-matching
- take: Take first n elements
- drop: Drop first n elements
- zip: Combine arrays into pairs
- compact: Remove null values
- pluck: Extract field from objects
- group-by: Group elements by key function
- count-by: Count elements by key function

### Cryptography & Encoding (8 functions)
- base58-encode/decode: Solana address encoding
- base64-encode/decode: Data encoding
- hex-encode/decode: Byte array encoding
- sha256: SHA-256 cryptographic hash
- sha512: SHA-512 cryptographic hash

### Object Operations (1 function)
- merge: Merge multiple objects (right-most wins)

## Documentation Added

### Primary Documentation
- crates/ovsm/BUILTIN_FUNCTIONS.md (32KB, 1,721 lines)
  Complete glossary of all 91+ built-in functions organized into 16 categories
  with signatures, examples, and usage notes

- crates/ovsm/llms.txt (16KB, 554 lines)
  LLM-optimized reference for AI assistants and coding tools

### Updated Documentation
- crates/ovsm/README.md: Added glossary link and reorganized sections
- crates/ovsm/USAGE_GUIDE.md: Added prominent glossary references
- crates/ovsm/QUICK_START.md: Added "Next Steps" with glossary link

### Landing Page
- docs/pages/ovsm-language.html (341 lines)
  Complete rewrite to reflect LISP-based OVSM with:
  - Links to function glossary
  - Blockchain-focused examples
  - Map-reduce stack highlights
  - Cryptographic operations showcase
  - 100% test coverage emphasis

### Documentation Distribution
- docs/ovsm/BUILTIN_FUNCTIONS.md: Copy for GitHub Pages
- docs/ovsm/llms.txt: Copy for LLM access
- docs/ovsm/README_LISP.md: LISP overview for web

## Implementation

File: crates/ovsm/src/runtime/lisp_evaluator.rs
- Implemented 23 new functions with comprehensive error handling
- Added dependencies: sha2, base64, bs58, hex
- 100% test coverage maintained (356/356 tests passing)

## Impact

- Users can now access complete function reference from landing page
- LLMs have optimized documentation for code generation
- All 91+ functions documented with examples
- Map-reduce functional programming fully supported
- Blockchain cryptography operations available
- Production-ready status clearly communicated

Function count by category:
- Control Flow: 10 | Variables: 5 | Functions: 7 | Macros: 4
- Logical: 3 | Type Predicates: 10 | Assertions: 2
- Crypto & Encoding: 8 | Strings: 8 | Math: 15
- Collections: 28 | Objects: 3 | Advanced: 2
- Error Handling: 2 | Utilities: 2

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 0xrinegade

Cargo.lock

@@ -1,5 +1,5 @@
 [workspace]
-members = [".", "crates/ovsm"]
+members = [".", "crates/ovsm", "guest/mcp_vsock_wrapper"]
 resolver = "2"
 
 [package]