Streamline thread mutation handlers (#19493)

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## Why

Thread mutation handlers had many short error branches whose only job
was to emit a JSON-RPC error and stop. This slice keeps those errors
visible, but lets each handler build a result and return early from
validation helpers instead of nesting the main path.

## What Changed

- Streamlined thread archive/unarchive, rename, memory, metadata,
rollback, compact, background terminal, shell, and guardian handlers in
`codex-rs/app-server/src/codex_message_processor.rs`.
- Reused shared JSON-RPC error constructors in
`codex-rs/app-server/src/bespoke_event_handling.rs` for rollback-related
request failures.
- Preserved direct `send_error` calls where they remain the simplest
boundary for pending async event responses.

## Verification

- `cargo check -p codex-app-server`
- `cargo test -p codex-app-server --test all v2::thread_rollback --
--test-threads=1`

...

This commit is contained in:

pakrym-oai authored and GitHub committed 2026-04-27 14:18:55 -07:00

1 parent 798de22637

commit 5c30d79afb

2 files changed

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