Simplify framework structure and shared configuration

[shibayan]

Summary

• consolidate repeated tsdown, Vitest, and TypeScript package configuration into shared helpers and presets
• remove unused run-scope and generic stream-piping layers while preserving run-scoped middleware and structured-output behavior
• simplify FoundryChatClient by inheriting the OpenAI implementation
• align Hosted Agent Dockerfiles with Foundry's root-owned persistent HOME mount

Why

The workspace repeated nearly identical configuration across eight packages and retained internal abstractions with a single consumer. This made the repository larger and obscured the execution paths. The Hosted Agent images also forced a non-root user even though Foundry mounts /home/session as root-owned, preventing the hosting stores from writing session and approval state.

Impact

• removes 397 net lines across 63 files
• keeps published package entry points and generated declaration exports unchanged
• avoids permission failures for Hosted Agent session and approval persistence
• preserves middleware ordering, concurrent-run isolation, streaming finalization, and provider behavior

Validation

• pnpm check
• Docker build and persistent-HOME write test
• git diff --check

[Copilot]

Pull request overview

This PR reduces duplication across the monorepo by centralizing tsdown/Vitest/TypeScript configuration, and simplifies core runtime layering by removing single-consumer abstractions (stream piping + run-scope symbol) while preserving run-scoped middleware behavior via an explicit per-run client binding. It also simplifies FoundryChatClient by inheriting the OpenAI implementation, and updates Foundry example Dockerfiles to better match Foundry’s runtime storage expectations.

Changes:

• Consolidate repeated build/test config into shared helpers (scripts/vitest-config.ts, scripts/tsdown-config.ts) and new TS presets (tsconfig.node.json, tsconfig.neutral.json, updated tsconfig.tools.json).
• Refactor function invocation/run scoping: remove run-scope symbol plumbing and pipeStream, add a function-invocation client factory, and rewire Agent to bind per-run session/middleware explicitly.
• Simplify Foundry client implementation by extending OpenAIChatClient; update Foundry example Dockerfiles for root execution.

Reviewed changes

Copilot reviewed 63 out of 63 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tsconfig.tools.json	Enables .ts extension imports for tooling typechecks and centralizes inclusion of workspace config scripts.
tsconfig.node.json	New shared TS preset for Node-typed compilation.
tsconfig.neutral.json	New shared TS preset for runtime-neutral (DOM lib, no Node types) compilation.
scripts/vitest-config.ts	Adds shared Vitest aliases + test discovery helper for packages.
scripts/tsdown-config.ts	Adds shared tsdown defaults helper for publishable packages.
packages/openai/vitest.config.ts	Switches to shared Vitest preset helper.
packages/openai/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/openai/tsconfig.src.json	Uses shared neutral TS preset for runtime-agnostic typechecking.
packages/openai/tsconfig.json	Uses shared Node TS preset for Node-typed compilation.
packages/openai/tsconfig.config.json	Removes per-package config tsconfig (now covered by root tools TS project).
packages/openai/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/meta/vitest.config.ts	Switches to shared Vitest preset helper.
packages/meta/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/meta/tsconfig.json	Uses shared Node TS preset.
packages/meta/tsconfig.config.json	Removes per-package config tsconfig.
packages/meta/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/mcp/vitest.config.ts	Switches to shared Vitest preset helper.
packages/mcp/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/mcp/tsconfig.src.json	Uses shared neutral TS preset.
packages/mcp/tsconfig.json	Uses shared Node TS preset.
packages/mcp/tsconfig.config.json	Removes per-package config tsconfig.
packages/mcp/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/foundry/vitest.config.ts	Switches to shared Vitest preset helper.
packages/foundry/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/foundry/tsconfig.json	Uses shared Node TS preset.
packages/foundry/tsconfig.config.json	Removes per-package config tsconfig.
packages/foundry/src/chat-client.ts	Simplifies FoundryChatClient by extending OpenAIChatClient and reusing its tool/client surface.
packages/foundry/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/core/vitest.config.ts	Switches to shared Vitest preset helper.
packages/core/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/core/tsconfig.src.json	Uses shared neutral TS preset and trims now-redundant comments.
packages/core/tsconfig.json	Uses shared Node TS preset.
packages/core/tsconfig.config.json	Removes per-package config tsconfig.
packages/core/src/streaming/response-stream.ts	Removes internal pipeStream and its internal iterator-claiming hook.
packages/core/src/streaming/response-stream.test.ts	Removes tests for removed pipeStream.
packages/core/src/middleware/run-scope.ts	Deletes run-scope symbol plumbing (now handled via explicit per-run client binding).
packages/core/src/middleware/middleware.test.ts	Adds coverage ensuring run middleware/session isolation across concurrent runs.
packages/core/src/client/structured-output.ts	Replaces pipeStream usage with explicit relay logic using createResponseStream.
packages/core/src/client/function-invocation.ts	Introduces per-run client factory; removes run-scope symbol reading/stripping.
packages/core/src/agent/agent.ts	Rewires agent composition to bind session + run middleware through the new function-invocation factory.
packages/core/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/anthropic/vitest.config.ts	Switches to shared Vitest preset helper.
packages/anthropic/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/anthropic/tsconfig.src.json	Uses shared neutral TS preset.
packages/anthropic/tsconfig.json	Uses shared Node TS preset.
packages/anthropic/tsconfig.config.json	Removes per-package config tsconfig.
packages/anthropic/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/agentserver/vitest.config.ts	Switches to shared Vitest preset helper.
packages/agentserver/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/agentserver/tsconfig.json	Uses shared Node TS preset.
packages/agentserver/tsconfig.config.json	Removes per-package config tsconfig.
packages/agentserver/package.json	Simplifies typecheck script to exclude removed config tsconfig.
packages/a2a/vitest.config.ts	Switches to shared Vitest preset helper.
packages/a2a/tsdown.config.ts	Switches to shared tsdown preset helper.
packages/a2a/tsconfig.src.json	Uses shared neutral TS preset.
packages/a2a/tsconfig.json	Uses shared Node TS preset.
packages/a2a/tsconfig.config.json	Removes per-package config tsconfig.
packages/a2a/package.json	Simplifies typecheck script to exclude removed config tsconfig.
package.json	Updates root typecheck to include tsconfig.tools.json project for config-file typechecking.
examples/02-foundry/02-hosted-agent/Dockerfile	Removes node user + explicit state root; now runs as root.
examples/02-foundry/05-invocations-agent/Dockerfile	Removes node user + explicit state root; now runs as root.
examples/02-foundry/06-memory-agent/Dockerfile	Removes node user + explicit state root; now runs as root.
examples/02-foundry/07-toolbox-skills/Dockerfile	Removes node user + explicit state root; now runs as root.

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