docs(rfc): reject prune-unimplemented-subagent-vocabulary — reserved surface

Maintainer decision: the subagent seam's deferred capability vocabulary
(outputSchema/structured, toolFilter, sendMessage/resume) is
intentionally reserved — the seam advertises the full intended contract
ahead of its implementations so providers and consumers grow into a
stable shape. Moved to rejected/ with the rationale on the status line;
the consumer-evidence analysis stays as the record of what is currently
unimplemented.
This commit is contained in:
Tianyi Cui
2026-07-04 14:06:26 +08:00
parent 3395d463fd
commit fa139c88b7
2 changed files with 2 additions and 2 deletions

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@@ -56,7 +56,6 @@ Do NOT write one for a mechanical or local choice (a variable name, a one-file r
| [Drop the unconsumed web observation surface — the `providers-change` event and the status methods](proposed/simplification/2026-07-04-drop-unconsumed-web-observation-surface.md) | 2026-07-04 |
| [Drop the `image` content block until a path can honor it](proposed/simplification/2026-07-04-drop-image-content-block.md) | 2026-07-04 |
| [Prune write-only fields and a dead routing knob from the fs seam](proposed/simplification/2026-07-04-prune-write-only-fs-surface.md) | 2026-07-04 |
| [Prune the unimplemented subagent seam vocabulary](proposed/simplification/2026-07-04-prune-unimplemented-subagent-vocabulary.md) | 2026-07-04 |
| [Trim unreachable ACP bridge surface — the branding knobs and the kind-sniffing fallback](proposed/simplification/2026-07-04-trim-acp-bridge-unreachable-surface.md) | 2026-07-04 |
| [Prune dead core-spine surface — `SurfaceManager.invalidate()`, the loop-internal exports, `ToolExecutionResult.callId`](proposed/simplification/2026-07-04-prune-dead-core-spine-surface.md) | 2026-07-04 |
| [Share the app bins' boot glue instead of maintaining twin copies](proposed/simplification/2026-07-04-share-app-bin-boot-glue.md) | 2026-07-04 |
@@ -199,6 +198,7 @@ Do NOT write one for a mechanical or local choice (a variable name, a one-file r
| [Retire mid-turn steering](rejected/simplification/2026-06-20-retire-mid-turn-steering.md) | 2026-06-20 |
| [Return the ACP bridge to one live session per connection](rejected/simplification/2026-06-20-single-session-acp-bridge.md) | 2026-06-20 |
| [Truncate interrupted final turns on load](rejected/simplification/2026-06-20-truncate-interrupted-turns.md) | 2026-06-20 |
| [Prune the unimplemented subagent seam vocabulary](rejected/simplification/2026-07-04-prune-unimplemented-subagent-vocabulary.md) | 2026-07-04 |
### Architecture

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@@ -1,6 +1,6 @@
# RFC: Prune the unimplemented subagent seam vocabulary
Status: proposed
Status: rejected — the deferred capability vocabulary (`outputSchema`/`structured`, `toolFilter`, `sendMessage`/`resume`) is intentionally reserved surface: the seam advertises the full intended contract ahead of its implementations by design, so providers and consumers grow into a stable shape rather than re-negotiating it per capability. The consumer-evidence analysis below stands as the record of what is currently unimplemented.
## Problem