feat: typescript migration (#40)

* chore: initialize TypeScript configuration and build setup

- Add tsconfig.json for root and mcp-server with strict type checking
- Install typescript and @types/node as devDependencies
- Add npm build script for TypeScript compilation
- Update main entrypoint to compiled dist/shannon.js
- Update Dockerfile to build TypeScript before running
- Configure output directory and module resolution for Node.js

* refactor: migrate codebase from JavaScript to TypeScript

- Convert all 37 JavaScript files to TypeScript (.js -> .ts)
- Add type definitions in src/types/ for agents, config, errors, session
- Update mcp-server with proper TypeScript types
- Move entry point from shannon.mjs to src/shannon.ts
- Update tsconfig.json with rootDir: "./src" for cleaner dist output
- Update Dockerfile to build TypeScript before runtime
- Update package.json paths to use compiled dist/shannon.js

No runtime behavior changes - pure type safety migration.

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* docs: update CLI references from ./shannon.mjs to shannon

- Update help text in src/cli/ui.ts
- Update usage examples in src/cli/command-handler.ts
- Update setup message in src/shannon.ts
- Update CLAUDE.md documentation with TypeScript file structure
- Replace all ./shannon.mjs references with shannon command

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* chore: remove unnecessary eslint-disable comments

ESLint is not configured in this project, making these comments redundant.

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src/types/config.ts

@@ -0,0 +1,63 @@
+// Copyright (C) 2025 Keygraph, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License version 3
+// as published by the Free Software Foundation.
+
+/**
+ * Configuration type definitions
+ */
+
+export type RuleType =
+  | 'path'
+  | 'subdomain'
+  | 'domain'
+  | 'method'
+  | 'header'
+  | 'parameter';
+
+export interface Rule {
+  description: string;
+  type: RuleType;
+  url_path: string;
+}
+
+export interface Rules {
+  avoid?: Rule[];
+  focus?: Rule[];
+}
+
+export type LoginType = 'form' | 'sso' | 'api' | 'basic';
+
+export type SuccessConditionType = 'url' | 'cookie' | 'element' | 'redirect';
+
+export interface SuccessCondition {
+  type: SuccessConditionType;
+  value: string;
+}
+
+export interface Credentials {
+  username: string;
+  password: string;
+  totp_secret?: string;
+}
+
+export interface Authentication {
+  login_type: LoginType;
+  login_url: string;
+  credentials: Credentials;
+  login_flow: string[];
+  success_condition: SuccessCondition;
+}
+
+export interface Config {
+  rules?: Rules;
+  authentication?: Authentication;
+  login?: unknown; // Deprecated
+}
+
+export interface DistributedConfig {
+  avoid: Rule[];
+  focus: Rule[];
+  authentication: Authentication | null;
+}