fix(tools): deduplicate @supermemory/ai-sdk into @supermemory/tools/a…

[Paramveersingh-S]

Summary

packages/ai-sdk had aggressively drifted from packages/tools/src/ai-sdk.ts, missing several major bug fixes related to default container tagging and Zod coercion (e.g., #1202, #1214).

Changes:

• Deleted the duplicated and outdated tools.ts logic inside packages/ai-sdk.
• Swapped packages/ai-sdk/src/index.ts to be a pure passthrough re-export: export * from "@supermemory/tools/ai-sdk".
• Cleaned up the local dependencies in package.json to only rely on @supermemory/tools and @ai-sdk/provider, bumping the version to v2.0.0 to reflect the inherited behavior fixes.

There is now only one implementation dictating scoping semantics.

Fixes #1247

[MaheshtheDev]

Closing this one. Four PRs are open for the same consolidation, so we are keeping #1433 as the single thread since it also refreshes the tool surface.

Worth flagging for whoever picks this up: packages/ai-sdk/src/tools.ts now holds a search-limit clamp added in #1593, and packages/tools/src/ai-sdk.ts has no equivalent. Collapsing the package into a re-export today would silently drop that bound, so the clamp needs porting across first.