Initial commit: pi-project-map skill scaffolding

- Design doc with full spec (dense markdown format, hybrid AST+LLM pipeline,
  consumption model, stale data mitigation)
- Implementation plan with 6 milestones and rollout strategy
- TypeScript package structure with all source stubs
- CLI entry point, formatter, discover, init, patch, validate, extract, merge
- Pi SKILL.md with tool definitions and format documentation

src/config.ts

@@ -0,0 +1,23 @@
+export interface SkillConfig {
+  ignorePatterns: string[];
+  smallPackageThreshold: number;
+  llmModel: string;
+  contextBudget: number;
+  autoInjectPrompt: boolean;
+}
+
+export const DEFAULT_CONFIG: SkillConfig = {
+  ignorePatterns: [
+    'node_modules', '.git', 'dist', 'build', 'coverage',
+    '.next', '.venv', '__pycache__', '.DS_Store', '*.log'
+  ],
+  smallPackageThreshold: 10,
+  llmModel: 'gpt-4o-mini',
+  contextBudget: 4000,
+  autoInjectPrompt: true
+};
+
+export function loadConfig(): SkillConfig {
+  // TODO: load from .pi-project-map.json or similar
+  return DEFAULT_CONFIG;
+}