## What changed
Allow the Guardian housekeeper to route evidence to existing channels without repeating their descriptions. Request descriptions only for new destinations or changed descriptions, and skip channel updates when a returned description matches the catalog.
New destinations still require descriptions, and description updates remain limited to routed channels.
## Testing
Extend housekeeping tests to cover omitted and repeated descriptions without extra channel writes, preserved descriptions, and rejection of missing new-channel descriptions or updates to unrouted channels before any writes.
GitOrigin-RevId: 3ab00fc17263d68d15e68f9d17ab31fc6f43f551
## Why
Replaying delivered assistant messages allocates new retained-source revisions instead of preserving those captured in live history.
## What changed
- Capture retained sources when recording assistant deliveries, persist them in rollout metadata, and reuse their revisions during replay.
- Add optional `next_item_ordinal` compaction metadata and a `next_model_id_ordinals` helper to recover item and window allocation positions from checkpoints and subsequent records. Ignore allocation metadata that refers to other threads.
## Testing
Extend tests to compare live and replayed delivery sources, preserve revisions through an older reader's rewrite, and verify ordinal recovery from checkpoints and subsequent local items.
GitOrigin-RevId: cfdeebe8e13b1700b34b9c98696880a90a99ace5
## What changed
Carry `ContextWindowId` through session metadata, compaction checkpoints, rollout recording, and thread creation instead of converting IDs to strings. Add deserialization and JSON schema support while preserving the serialized string format and legacy numeric compaction IDs.
Validate deserialized IDs as UUIDv7 values before restoring context windows, preserving the existing handling of unsupported IDs.
GitOrigin-RevId: fda329d0654f438171a955c9f75550817c32c047
## What changed
Expose history initialization and the effective history mode to thread-ready contributors. Add `EvidenceCursor::at_thread_ready` with paginated-history validation:
- Start new or cleared threads at position zero without requiring an existing rollout.
- Start resumed, forked, or supplied-history threads at the durable tail to avoid backfilling existing evidence.
- Skip the initial `SessionMeta` header when capturing evidence from position zero.
## Testing
Extend evidence tests to cover initialization before a rollout exists, capture of the first original record, rejection of resume without a rollout, and exclusion of existing records on resume.
GitOrigin-RevId: 32aa8e2afb71eb4e882b5f1fb107ac8616b33c8e
## Why
Guardian's retrieval, channel selection, and evidence delivery depend on concrete local message-board types. Expose the required operations through shared interfaces so these consumers can use trait-based board handles.
## What changed
- Introduce `BoardReadView` for captured catalogs and post boundaries, with read operations and JSON search configuration but no mutation methods.
- Extend `AgentMessageBoard` with namespace identification, read-view capture, and channel subscription operations, and implement them for the local board.
- Add `message_board_read_tools` to bind the five read-only tools to a captured view.
- Migrate Guardian consumers to `AgentMessageBoard` and `BoardReadView`, retaining Guardian namespace checks and captured read boundaries.
## Testing
Adapt read-view and Guardian retrieval tests to the trait interfaces. Add assertions for the five retrieval tools and rejection of ordinary boards by retrieval binding, subscription capture, and delivery planning.
GitOrigin-RevId: f8c5bc65d8297f6df6e3b02d6c09006bcaea4b1a
## What changed
Add `DeliveryPlan::deliver` to supply selected originals as `guardian_original_evidence` context in source order. Read whole posts one board page at a time and batch them within the model's tool-output budget, rejecting originals that cannot fit intact.
Record delivered ordinals only after the admission callback succeeds, and advance channel positions when the plan completes. Preserve successful admissions across partial plans so retries and overlapping channel selections do not duplicate evidence.
Add `LocalBoardReadView::read_post_texts` to retrieve posts in the requested order while enforcing the captured board boundary.
## Testing
Add retrieval tests covering ordered delivery into a retained conversation without starting inference, deduplication, failed admission, oversized-original retries, older evidence from newly selected channels, captured-view boundaries, and paged reads.
GitOrigin-RevId: b2f03e039c6677e0b94dceaa7ed75a966edf81eb
## What changed
Add `DeliveryState` to plan unique evidence originals from selected Guardian board channels in source order. Read request IDs in pages by insertion sequence within a captured board view, and reject evidence beyond the review's source-history cutoff.
Share evidence request-ID encoding between the housekeeper and delivery planner, and expose the source cutoff on `EvidenceSnapshot`.
## Testing
Add retrieval tests covering deduplication across channels, source ordering across storage pages, exclusion of unselected channels and posts appended after capture, and rejection of evidence beyond the source cutoff.
GitOrigin-RevId: fc181a52b46137538bb94a5bba1c1d6bf1bccf32
## What changed
Add `ReviewerSubscriptions::prepare` to select evidence channels using the review task, current subscriptions, and captured catalog. Validate unique channel names before atomically replacing the caller's subscriptions within that catalog, preserving subscriptions to channels outside it.
Share typed sampling between selection and housekeeper routing, enforce input byte budgets, and expose `OperationResult` so callers can honor runtime reuse or rollback requirements. Selection observes cancellation and deadlines before saving membership.
## Testing
Add integration coverage for subscription replacement, caller isolation, preservation of later channels, cancellation before sampling, and rejection of selections outside the captured catalog with a rollback disposition.
GitOrigin-RevId: fcab0de88ac862e21cdf3c780c780385e2543604
## What changed
Add `ReviewerSubscriptions` to capture a Guardian catalog and expose self-only `subscribe` and `unsubscribe` tools. Restrict requests to channels in that catalog and return captured post IDs so later evidence stays outside the review boundary. Read current membership from storage and filter it through the captured catalog.
Share message-board tool size limits and query the latest channel post directly when updating subscriptions.
## Testing
Add coverage for caller-only subscription changes, rejection of later channels and explicit agent targets, captured post IDs, and unchanged subscriptions for other agents. Extend message-board tests to check unsubscribe post IDs and reject missing channels.
GitOrigin-RevId: 48bf4270d6079f7e436096175c67bb211ccbc248
## What changed
- Expose `guardian_board` tools to list channels and threads, search posts, and read evidence through a captured read-only view. Require a Guardian storage namespace and keep reads within the review's fixed cutoff, including searches across unsubscribed channels.
- Support literal, case-insensitive searches over decoded JSON fields and nested function-call arguments so quotes, Windows paths, and Unicode escapes do not hide matching evidence.
- Strip response-envelope harness metadata from captured evidence except for `user_input_order`, preserving message payloads and source ordering.
## Testing
Add retrieval coverage for unsubscribed channels, fixed cutoffs, and escaped JSON searches. Update evidence tests to verify serialized payloads retain source order while excluding other harness metadata.
GitOrigin-RevId: 3128e4a2d59d1f71f2cce0bc6b1fbdf7e2aba287
## What changed
Add a `Housekeeper` that uses an isolated reviewer runtime to route captured original evidence into topic channels and update their discovery descriptions. Keep originals intact and batch inputs within the selected model's tool-output budget.
Validate routing responses before writing to the message board. Advance the evidence cursor only after all writes succeed, stop the worker after an error, and return the runtime disposition so callers can manage session reuse.
## Testing
Add integration coverage for routing originals to multiple channels, updating descriptions, preserving capture boundaries, batching within the input budget, and leaving the cursor unchanged on write failure.
GitOrigin-RevId: 670508c7ecf2ddffdd2946f1b25dd7e071318c5a
## Why
Evidence capture previously reloaded the full history without tracking consumer progress. Live consumers need to read new originals from activation onward and acknowledge them after downstream writes succeed.
## What changed
- Add an in-memory `EvidenceCursor` that starts at the current complete tail without backfilling, captures a fixed unread range, and supports partial acknowledgements. Reads leave progress unchanged.
- Add `ThreadStore::read_original_history` to read original records and their source positions through a fixed cutoff. Local storage supports append-only paginated root histories, including compressed rollouts, and defers unfinished records.
- Reject unsupported histories and invalid ranges, and retain source ordinals as evidence IDs.
## Testing
Add coverage for partial records, compressed suffixes, fixed cutoffs, mismatched thread positions, and truncation. Extend evidence tests to cover activation without backfill, partial acknowledgements, later appends, stale captures, and unchanged cursor progress after capture errors.
GitOrigin-RevId: c7a13749fedc4f44fadddc9dd9875043bccebd95
## What changed
Add `EvidenceSnapshot::capture` to read original evidence from `ThreadStore` into an immutable snapshot with root-history ordinals. Preserve accepted user messages, assistant messages, tool activity, verified answers, delivered assistant messages, and host-annotated approvals without changing their contents or provenance.
Exclude generated context and compaction output. Reject forked or reverted histories, inherited or ambiguously attributed user messages, and incomplete retained evidence. Capture currently supports append-only root histories and requires the host to flush pending originals first.
## Testing
Add an integration test covering content preservation, generated-context filtering, approval provenance, isolation from later appends, and rejection of ambiguous user messages.
GitOrigin-RevId: f464a2714c2678bcffe7abf0a8224196bfe48692
felixxia-oai