Migrate to ReScript and Deno

[hyperpolymath]

This commit implements the Hyperpolymath language policy migration:

LANGUAGE CHANGES:

• Convert all TypeScript files to ReScript (.res)
• Remove TypeScript entirely from codebase (12 files, ~3,121 lines)
• Add minimal JavaScript FFI glue for Deno-specific APIs
• ReScript compiles to ES modules that Deno runs directly

NEW FILES:

• src/engine/Core.res - Mill-Based Synthesis Engine
• src/ssg/Types.res - Type definitions
• src/ssg/Build.res - Build system
• src/noteg-lang/Lexer.res - NoteG language lexer
• src/noteg-lang/Parser.res - NoteG language parser
• src/noteg-lang/lsp/Server.res - LSP implementation
• src/noteg-mcp/Server.res - MCP server
• src/Mod.res - Module entry point
• src/tests/Engine_test.res - Test suite

CONFIGURATION:

• Add rescript.json for ReScript 11+ configuration
• Update deno.json for ReScript output paths
• Add package.json for ReScript compiler only (not runtime)
• Create Mustfile.ncl with Nickel for deployment transitions
• Update justfile with ReScript build steps and must-* transitions

POLICY ENFORCEMENT:

• Add .githooks/pre-commit to block banned file types
• Add scripts/check-policy.js for comprehensive policy checking
• Update .gitattributes with banned file markers
• Enforce: No TypeScript, No Makefile, No npm/bun runtime

The codebase now follows the Hyperpolymath Standard:

• Primary: ReScript → JavaScript (Deno runtime)
• Config: Nickel (Mustfile.ncl)
• Build: just + must transitions
• Container: Podman