Owen Lin b7ba02f880 Support store-owned preparation when resuming threads (#54059) ...

## Why

Thread stores need a way to reuse history and writer state loaded while preparing a resume, rather than loading them again during session startup.

## What changed

- Add an opaque, single-use `ThreadStoreResumePreparation` and an optional preparation in `StartThreadOptions`.
- Pass preparation through session startup to `ThreadStore::resume_thread_with_preparation`, which defaults to an unsupported-operation error.
- Reject preparation for ephemeral threads or threads without resumed history. Continue using `resume_thread` when no preparation is supplied.

## Testing

Add a regression test verifying that supplied preparation selects the prepared store path and propagates its unsupported-operation error instead of falling back to ordinary resume.

GitOrigin-RevId: 26537d9b83443bd56341d6afc713f32b999dc67c

2026-10-14 18:02:25 +00:00

..

snapshots

Send base instructions as Responses input messages (#51156)

2026-10-05 18:52:51 +00:00

tests

Support store-owned preparation when resuming threads (#54059)

2026-10-14 18:02:25 +00:00

active_plugin_inventory_tests.rs

Keep plugin and skill snapshots scoped to each step (#50050)

2026-10-01 17:44:52 +00:00

async_compaction_tests.rs

Wire background compaction into the turn lifecycle (#53800)

2026-10-13 23:51:47 +00:00

async_compaction.rs

Wire background compaction into the turn lifecycle (#53800)

2026-10-13 23:51:47 +00:00

code_mode_warning_tests.rs

chore: warn when Code Mode lacks model metadata (#29490)

2026-06-23 01:15:11 +00:00

code_mode_warning.rs

chore: warn when Code Mode lacks model metadata (#29490)

2026-06-23 01:15:11 +00:00

config_refresh_tests.rs

Add configurable default plugin activation policy (#52220)

2026-10-08 18:42:58 +00:00

config_refresh.rs

Add configurable default plugin activation policy (#52220)

2026-10-08 18:42:58 +00:00

context_window.rs

Add opt-in compaction after final responses (#46541)

2026-09-19 00:52:56 +00:00

daemon_recovery.rs

Preserve turn attribution across recovery and compaction (#51402)

2026-10-06 15:50:27 +00:00

elicitation_holders_tests.rs

Keep step settings and approval environments consistent (#46556)

2026-09-19 01:27:26 +00:00

environment.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

extension_interruption_tests.rs

Remove initial messages from session configuration events (#50360)

2026-10-02 16:55:41 +00:00

extension_interruption.rs

Add opt-in structured errors for Guardian circuit-breaker interruptions (#48796)

2026-09-27 22:05:19 +00:00

extension_metrics.rs

Use explicit histogram buckets for Guardian context metrics (#44181)

2026-09-09 15:48:39 +00:00

guardian_checkpoint_tests.rs

Preserve independent Guardian history across parent compaction (#48779)

2026-09-27 20:15:23 +00:00

guardian_checkpoint.rs

Persist resume metadata in compaction checkpoints (#47323)

2026-09-22 16:35:30 +00:00

handlers.rs

Add infrastructure for speculative remote V2 compaction (#53614)

2026-10-13 08:44:23 +00:00

inject_tests.rs

Track cumulative MCP attribution across requests and thread history (#47081)

2026-09-21 18:19:07 +00:00

inject.rs

Close input admission while a turn finishes recording (#53452)

2026-10-12 18:54:22 +00:00

input_queue.rs

Preserve queued agent mail across session eviction (#50087)

2026-10-01 20:17:34 +00:00

mcp_prewarm.rs

Add turn-start cloud plugin discovery to the MCP extension (#46572)

2026-09-19 02:07:58 +00:00

mcp_refresh.rs

Honor attachment-owned permissions for MCP servers (#40728)

2026-08-25 22:50:49 +00:00

mcp_runtime.rs

Keep host MCP and plugin configuration local with remote environments (#53990)

2026-10-14 14:08:26 +00:00

mcp_tests.rs

Run Guardian conversation classifiers concurrently and preserve action order (#52061)

2026-10-08 10:42:28 +00:00

mcp.rs

Acquire and cache opt-in executor capability inventories via V2 (#53736)

2026-10-13 18:15:50 +00:00

mod.rs

Support store-owned preparation when resuming threads (#54059)

2026-10-14 18:02:25 +00:00

multi_agents.rs

Expose a backend-independent agent control contract (#46547)

2026-09-19 01:03:55 +00:00

notification_tests.rs

Close input admission while a turn finishes recording (#53452)

2026-10-12 18:54:22 +00:00

plugin_selection.rs

Honor thread-level plugin exclusions across runtime capabilities (#44655)

2026-09-10 21:51:34 +00:00

realtime_history.rs

Record realtime conversation history in Core (#41924)

2026-08-31 22:38:23 +00:00

reasoning_effort_tests.rs

Enforce Fast and Ultra Fast policies independently (#51253)

2026-10-06 03:35:55 +00:00

reasoning_effort.rs

Preserve request-level reasoning effort for memory and title workers (#46531)

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

retained_context_tests.rs

Retain confirmed Code Mode messages for Guardian reviews (#48725)

2026-09-27 15:03:38 +00:00

retained_context.rs

Persist explicit user goal edits in model history (#49598)

2026-09-30 11:58:03 +00:00

review.rs

Remove the patched zsh shell execution backend (#52160)

2026-10-08 16:19:09 +00:00

rollout_budget.rs

Route session agent operations through AgentControl (#47520)

2026-09-23 09:39:30 +00:00

rollout_reconstruction_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

rollout_reconstruction.rs

Load persisted sender context for Guardian reviews (#51734)

2026-10-07 15:47:21 +00:00

session.rs

Support store-owned preparation when resuming threads (#54059)

2026-10-14 18:02:25 +00:00

startup_prewarm.rs

Preserve tool declaration mode across resumed context windows (#51480)

2026-10-06 21:28:13 +00:00

startup.rs

Expose detailed agent tree shutdown failure reports (#51515)

2026-10-06 23:28:55 +00:00

step_activation_tests.rs

Remove obsolete fields from persisted turn context (#51492)

2026-10-06 22:39:06 +00:00

step_activation.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

step_context.rs

Acquire and cache opt-in executor capability inventories via V2 (#53736)

2026-10-13 18:15:50 +00:00

step_settings_tests.rs

Remove legacy personality template metadata (#51223)

2026-10-06 01:46:33 +00:00

step_settings.rs

Enforce Fast and Ultra Fast policies independently (#51253)

2026-10-06 03:35:55 +00:00

submission.rs

Keep submission logs useful without exposing payloads (#51467)

2026-10-06 19:34:02 +00:00

tests.rs

Support store-owned preparation when resuming threads (#54059)

2026-10-14 18:02:25 +00:00

thread_settings.rs

Preserve running turn recovery across thread settings updates (#53879)

2026-10-14 06:03:02 +00:00

time_reminder.rs

Report clock failures again after recovery (#46006)

2026-09-16 18:54:45 +00:00

token_budget.rs

Add Pro Max plan support and update Pro display names (#47971)

2026-09-25 00:20:02 +00:00

turn_context.rs

Keep host MCP and plugin configuration local with remote environments (#53990)

2026-10-14 14:08:26 +00:00

turn_input_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

turn_input.rs

Add Responses API client metadata patches for turn start and steer (#54053)

2026-10-14 17:39:43 +00:00

turn_start_mcp_tests.rs

Add turn-start cloud plugin discovery to the MCP extension (#46572)

2026-09-19 02:07:58 +00:00

turn_suspension.rs

Route session agent operations through AgentControl (#47520)

2026-09-23 09:39:30 +00:00

turn_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

turn.rs

Wire background compaction into the turn lifecycle (#53800)

2026-10-13 23:51:47 +00:00

world_state_item_tests.rs

Record base instructions in incremental tool history (#51188)

2026-10-05 22:20:38 +00:00

world_state.rs

Refresh model instructions in incremental-tool context windows (#53872)

2026-10-14 05:36:44 +00:00