Ruslan Nigmatullin 8de2d336b8 Add extension hooks for model requests and response streams (#47679) ...

## What changed

Add `ModelRequestContributor` and `ModelResponseInterceptor` to the extension API. Contributors can add filtered `client_metadata` without overwriting existing or reserved fields and create interceptors for individual requests.

Wire contributors into HTTP and WebSocket requests, distinguishing generation from warmup. Apply response interceptors in registration order before tracing and response bookkeeping so transformed output is recorded consistently. Interceptors can inspect, buffer, or transform events, with stream ownership carrying request state and cancellation.

## Testing

Add tests for metadata protection, incremental event transformation, interceptor ordering, upstream cancellation, and consistency between delivered output, traces, and WebSocket bookkeeping. Integration tests cover output gating and interruption over HTTP and WebSocket, including a contributor that bypasses gating for warmup requests.

GitOrigin-RevId: d4bc1745d2cacf8636728dbc0a58ab9f250e9392

2026-09-23 22:10:04 +00:00

..

capabilities

Centralize compaction checkpoint selection and validation (#46009)

2026-09-16 19:25:50 +00:00

contributors

Expose tool dispatch and timing observations to extensions (#47662)

2026-09-23 20:49:48 +00:00

contributors.rs

Expose tool dispatch and timing observations to extensions (#47662)

2026-09-23 20:49:48 +00:00

lib.rs

Add extension hooks for model requests and response streams (#47679)

2026-09-23 22:10:04 +00:00

model_request.rs

Add extension hooks for model requests and response streams (#47679)

2026-09-23 22:10:04 +00:00

registry.rs

Add extension hooks for model requests and response streams (#47679)

2026-09-23 22:10:04 +00:00

session_isolation.rs

Decouple session isolation from subagent attribution (#44521)

2026-09-10 12:52:27 +00:00

state.rs

Keep the latest Guardian risk score during concurrent sampling (#38580)

2026-08-14 13:44:51 +00:00

tool_policy.rs

Decouple tool restrictions from session identity with ToolPolicy (#46999)

2026-09-21 10:40:40 +00:00

turn_admission.rs

Gate new turn submissions on host shutdown admission (#43943)

2026-09-08 23:45:10 +00:00

user_instructions.rs

Allow thread instruction providers to share updates with subagents (#46577)

2026-09-19 02:15:20 +00:00