Files
jif c9e6d9783d Let extensions contribute World State sections (#30100)
## Why

#29856 already owns the durable thread intent and exact environment
binding. This PR adds only the small missing extension boundary: an
extension can contribute one named World State section, while core still
owns persistence, diffing, and model-visible fragment types.

This lets skills stay in the skills extension instead of moving their
runtime into core.

## Shape

```text
extension-owned state
        |
        | contribute section id + JSON snapshot + renderer
        v
core World State
        |
        | compare with the previous snapshot
        v
no message, or one incremental model-visible update
```

The extension API is deliberately small:

```rust
fn contribute_world_state(...) -> Vec<WorldStateSectionContribution>
```

Core adapts the rendered result to `ContextualUserFragment`, records the
snapshot, and keeps the existing compaction/resume behavior.

## What changes

- Adds extension-owned World State section contributions.
- Calls those contributors from the existing per-step World State
builder.
- Restores durable selected capability roots into extension thread state
on resume.
- Keeps the actual model-context fragment and rollout machinery in core.

## What does not change

- No skill or MCP implementation moves out of its extension.
- No new file watcher, generation, or RPC.
- No generic migration of existing World State sections.
- No change to the stable environment-ID assumption from #29856.

## Example

```text
step 1 snapshot: skills = []
step 2 snapshot: skills = [executor-demo:deploy]

core asks the skills extension to render only that change.
```

## Stack

1. **This PR:** let extensions contribute World State sections.
2. Project executor skills through the skills extension.
3. Pin one MCP runtime to each model step.
4. Project selected MCP/app/connector metadata by environment
availability.
5. One end-to-end integration scenario.
2026-06-25 22:23:51 +01:00

27 lines
612 B
TOML

[package]
edition.workspace = true
license.workspace = true
name = "codex-extension-api"
version.workspace = true
[lib]
name = "codex_extension_api"
path = "src/lib.rs"
test = false
doctest = false
[lints]
workspace = true
[dependencies]
codex-config = { workspace = true }
codex-context-fragments = { workspace = true }
codex-protocol = { workspace = true }
codex-tools = { workspace = true }
codex-utils-absolute-path = { workspace = true }
serde_json = { workspace = true }
[dev-dependencies]
pretty_assertions = { workspace = true }
tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }