Fix TypeScript build errors - update dependencies and module resolution

[Copilot]

Build was completely broken with 644 TypeScript compilation errors. Root causes: outdated dependency APIs, missing ES module extensions, and pervasive type annotation issues.

Dependency & API Updates

• Installed missing graphql and express-graphql packages
• Migrated OpenAI client from v3 to v4 API:

  // Before
  import { Configuration, OpenAIApi } from 'openai';
  const config = new Configuration({ apiKey });
  const openai = new OpenAIApi(config);
  const completion = await openai.createChatCompletion({...});
  
  // After  
  import OpenAI from 'openai';
  const openai = new OpenAI({ apiKey });
  const completion = await openai.chat.completions.create({...});

• Fixed LRU-cache v11 imports: import LRUCache → import { LRUCache }

Module Resolution

• Added .js extensions to 24+ imports for NodeNext module resolution
• Added "dom" to tsconfig lib array for browser APIs
• Fixed 47 module reference errors

Type Safety

• Added explicit type annotations to 68+ implicit any parameters
• Resolved 24 export ambiguity conflicts (duplicate re-exports)
• Fixed error handling with proper type guards

Results

• 644 → 74 errors (88% reduction)
• Build now processes ~90% of codebase successfully
• Remaining errors documented in BUILD_STATUS.md: mostly property initialization (TS2564) and GraphQL introspection API compatibility

Files Modified

49 files across core modules including tensor-shapes/, ai/, mad9ml/, opencog/, plus configuration files.

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