chore: get default user config from schema

[gagik]

This removes a lot of boilerplate validation code and makes the UserConfigSchema the main source of truth for our parsing. The only part which is still "unsafe" is arguments we haven't defined in the schema which are part of arg-parser options. But those are also the args we don't use directly.

There's actually a couple more follow-ups I want to do with i.e. storing secrets but don't want to make this too big.

[Copilot]

Pull Request Overview

This PR refactors the configuration system to use the UserConfigSchema as the single source of truth for default values and validation, eliminating boilerplate validation code previously done manually. The schema now handles parsing, validation, and default value generation through Zod, streamlining the configuration setup process.

Key Changes:

• Replaced the hardcoded defaultUserConfig object with schema-based defaults
• Added preprocessing and validation directly to the Zod schema
• Consolidated configuration utilities into separate modules for better organization

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/common/config.ts	Removed defaultUserConfig object and manual validation logic; now uses UserConfigSchema.safeParse() for all validation
src/common/schemas.ts	New file containing shared type definitions for PreviewFeature and Similarity
src/common/configUtils.ts	New file extracting utility functions from config.ts including path getters and validation helpers
src/common/argsParserOptions.ts	New file extracting argument parser options from config.ts
tests/unit/common/config.test.ts	Updated tests to use UserConfigSchema.parse({}) instead of defaultUserConfig; added test to verify schema defaults
tests/unit/common/roles.test.ts	Updated to use UserConfigSchema.parse({}) for default config
tests/unit/toolBase.test.ts	Updated import to use PreviewFeature from schemas.ts
src/tools/tool.ts	Updated import to use PreviewFeature from schemas.ts
src/tools/mongodb/create/createIndex.ts	Updated to use similarityValues from schemas.ts instead of similarityEnum
src/common/search/vectorSearchEmbeddingsManager.ts	Removed similarityEnum definition, now using type from schemas.ts
src/lib.ts	Removed exports of defaultUserConfig and configurableProperties
scripts/generateArguments.ts	Updated to generate defaults from schema instead of defaultUserConfig
tests/integration/build.test.ts	Removed defaultUserConfig from expected exports
eslint-rules/enforce-zod-v4.js	Added schemas.ts to allowed Zod v4 imports

[coveralls]

Pull Request Test Coverage Report for Build 18973895821

Details

• 212 of 220 (96.36%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 80.045%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/common/config.ts	55	56	98.21%
src/common/configUtils.ts	53	60	88.33%

Totals
Change from base Build 18973742580:	0.08%
Covered Lines:	6440
Relevant Lines:	7920

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💛 - Coveralls