feat: update dependencies and improve logging and storage configurations

- Updated the version of `@ai-sdk/google` from `^2.0.52` to `^3.0.6` in `package.json` and `package-lock.json`.
- Added `cross-env` as a dependency in `package.json` to manage environment variables in scripts.
- Modified the `dev:mastra` and `dev:next` scripts in `package.json` to use `cross-env` for setting `NODE_OPTIONS`.
- Enhanced the logger configuration in `logger.ts` by removing OpenTelemetry tracing logic and simplifying log data structure.
- Updated `pg-storage.ts` to use `ModelRouterEmbeddingModel` instead of `google.textEmbedding` for embedding generation.
- Refactored `ChunkingService.ts` and `EmbeddingService.ts` to utilize `ModelRouterEmbeddingModel` for embedding tasks.
- Removed unnecessary tracing logic from `generateEmbeddings` function in `pg-storage.ts`.
- Updated statistics in `SDK_CRAWLER_STATISTICS_0.json` and `SDK_SESSION_POOL_STATE.json` to reflect new values and session details.
- Deleted unused request queue file `jBMmaaywUPlwSK3.json`.
- Improved documentation in `AGENTS.md` regarding observability imports and usage.
- Refactored various service files to ensure consistent usage of embedding models and logging practices.