chore: track .pi-map.md and .pi-map.index.md artifacts

Remove the map files from .gitignore so they are committed as project
navigation artifacts, and also unignore them in the sample fixture.
Regenerate all maps so the committed versions reflect the current source.

tests/.pi-map.md

@@ -0,0 +1,38 @@
+# tests
+dir: tests
+
+index: tests/.pi-map.index.md
+
+## role
+Comprehensive test suite for a project mapping tool that generates AI-readable codebase documentation with LLM integration, caching, and CLI query capabilities.
+## files
+- ast-extract.test.ts | Tests AST extraction of TypeScript exports, imports, and dependency resolution with fallback for unsupported file types | dep: vitest, ../src/ast/ast-extract.js, fs, path, os, ast-extract.js
+- cli.test.ts | Integration tests for a CLI tool that queries project context bundles from `.pi-map.md` and `.pi-map.index.md` files | dep: vitest, fs, path, os, child_process, url
+- format.test.ts | Tests markdown rendering and parsing functions for package maps, directory maps, and directory indexes in a project mapping tool. | dep: vitest, ../src/format.js, ../src/directory-model.js
+- integration.test.ts | Integration tests for a project mapping tool that generates and maintains .pi-map.md and .pi-map.index.md files across a codebase. | dep: vitest, fs, path, os, ../src/init.js, ../src/patch.js, ../src/validate.js, ./mock-llm.js, ../src/format.js
+- llm-batch.test.ts | Unit tests for retry and batch processing utilities in an LLM module | dep: vitest, ../src/llm/llm-batch.js, ../src/llm-error.js
+- llm-cache.test.ts | Tests a file-based caching system for LLM responses with get/set operations and cleanup. | dep: vitest, ../src/llm/llm-cache.js, fs, path, os
+- llm-extract.test.ts | Unit tests for LLM-based file extraction with mock client, testing file size limits, binary detection, and response parsing | dep: vitest, ../src/llm/llm-extract.js, fs, path, os, ../src/llm/llm-client.js
+- llm-integration.test.ts | Integration tests for LLM client functionality including Kimi API calls, file/package extraction, caching, parallel processing, and error handling | dep: vitest, fs, path, os, ../src/llm/llm-client.js, ../src/llm/llm-extract.js, ../src/llm/llm-batch.js, llm-client, llm-extract, llm-batch
+- merge.test.ts | Tests that mergeFileData normalizes multi-line function/method parameters and return types into single-line export signatures | dep: vitest, ../src/merge.js
+- mock-llm.ts | Provides mock LLM client implementations for testing purposes | exp: func:createMockFileClient(purpose) → LLMClient, func:createMockPackageClient() → LLMClient | dep: ../src/llm/llm-client.js, llm-client.js
+- pi-extension.test.ts | Tests a Pi coding agent extension that manages project map initialization, patching, validation, reinitialization, and context retrieval with configurable prompt injection modes. | dep: vitest, fs, path, os, ../src/prompt-injection.js, ../pi-extension.js, @mariozechner/pi-coding-agent, @mariozechner/pi-ai, typebox
+- prompt-injection.test.ts | Tests a prompt injection mitigation system that manages root-pair markers, context budgets, mode-based injection policies, and bypass detection for LLM interactions. | dep: vitest, fs, path, os, ../src/prompt-injection.js
+- retrieve.test.ts | Tests the `retrieveContext` function that searches and ranks project map files to build context bundles for AI queries. | dep: vitest, fs, path, os, ../src/retrieve.js
+- routing-metadata.test.ts | Tests the `populateRoutingMetadata` function which generates tags, symbols, and workflow hints from directory models for code navigation/routing purposes | dep: vitest, ../src/directory-model.js, ../src/routing-metadata.js
+## arch
+Layered testing architecture with unit, integration, and mock layers; uses file-based fixtures, mock LLM clients, and tests across AST extraction, LLM batching/caching, markdown rendering, context retrieval, and prompt injection security.
+## tags
+llm, js, src, tests, vitest, client, fs, path
+## symbols
+- createMockFileClient
+- createMockPackageClient
+## workflows
+- change tests behavior
+  read: mock-llm.ts
+- update tests tests
+  read: ast-extract.test.ts, cli.test.ts, format.test.ts
+- change tests CLI
+  read: cli.test.ts
+## dirty
+-