test: add fixture-based tests and snapshots for MCP tools

[mpicciolli]

Summary

Adds fixture-based test coverage for the MCP tools using real PCM save databases as test fixtures.

• Add .cdb save fixtures (2019, 2021, 2025) and a shared save.fixture.ts helper
• Add a mock MCP server harness (test/mocks/mock-mcp-server.ts) for exercising tools
• Add tests and snapshots for getSaveSchema, getTableSchema, getTeamRoster, searchCyclist, searchTeam, and getPlayerInfo
• Add tsconfig.test.json for the test build and update import paths for the mock server

[Copilot]

Pull request overview

This PR adds fixture-based Vitest coverage for multiple PCM MCP tools by introducing a mock MCP server harness, shared save-fixture helpers, and snapshot-based assertions of tool outputs across several official-release .cdb databases.

Changes:

• Add a dedicated tsconfig.test.json and adjust TS config to support a test-focused build/setup.
• Add a mock McpServer harness plus shared .cdb fixture helpers, and implement new tool tests using those fixtures.
• Add/refresh Vitest snapshot files capturing structured outputs for several tools; refactor pcm_get_table_schema to reuse an exported input schema.

Reviewed changes

Copilot reviewed 16 out of 22 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tsconfig.test.json	Adds a test-specific TS config for compiling/typechecking test sources.
tsconfig.json	Removes rootDir to avoid constraining TS project root to ./src.
src/tools/get-table-schema.ts	Extracts/export tool input schema for reuse and updates the callback typing.
test/mocks/mock-mcp-server.ts	Adds a mock MCP server harness for registering tools and invoking callbacks in tests.
test/fixtures/save.fixture.ts	Adds a shared list of .cdb fixtures used across tool tests.
test/save-db.test.ts	Tightens mock typing/casts used in withSaveDb tests.
test/tools/get-save-schema.test.ts	Adds registration + fixture-based snapshot tests for pcm_get_save_schema.
test/tools/get-table-schema.test.ts	Adds registration + fixture-based snapshot tests for pcm_get_table_schema.
test/tools/get-team-roster.test.ts	Adds registration + fixture-based snapshot tests for pcm_get_team_roster.
test/tools/search-cyclist.test.ts	Adds registration + fixture-based snapshot tests for pcm_search_cyclist.
test/tools/search-team.test.ts	Adds registration + fixture-based snapshot tests for pcm_search_team.
test/tools/get-player-info.test.ts	Adds registration + fixture-based tests asserting graceful error behavior for pcm_get_player_info.
test/tools/snapshots/get-save-schema.test.ts.snap	Snapshot baselines for pcm_get_save_schema outputs per fixture.
test/tools/snapshots/get-table-schema.test.ts.snap	Snapshot baselines for pcm_get_table_schema outputs per fixture.
test/tools/snapshots/get-team-roster.test.ts.snap	Snapshot baselines for pcm_get_team_roster outputs per fixture.
test/tools/snapshots/search-cyclist.test.ts.snap	Snapshot baselines for pcm_search_cyclist outputs per fixture.
test/tools/snapshots/search-team.test.ts.snap	Snapshot baselines for pcm_search_team outputs per fixture.

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