fix: expanded tool calls show their output, empty ones don't expand

[maria-rcks]

expanding command and mcp tool rows previously showed only their input because the thread stream withheld output and the clients never fetched it back. web, desktop's shared web client, and mobile now request the persisted result when the row opens; running rows fetch once and refresh at completion. reads and skills use the same path, and rows without available detail lose their disclosure.

the shared rpc reads through thread management and bounds each fetched command or dynamic input/output value to 256 kib. provider fixes preserve grok search queries/sources, fetch and search previews, antigravity command output, claude stdout/stderr and background acknowledgements, and failed edit/search errors. old rows cannot recover content the provider never persisted.

verification: the existing opencode adapter search test now covers empty glob and queryless whitespace web search; it, scoped lint, and server typecheck pass on blacksmith at 10af405920. all 25 wire-projection tests pass in blacksmith ci at 33e58e5932, including the command-input cap; lint, typecheck, and build pass too. two independent gpt-6-astra source reviewers approve this head. ci test, lint, typecheck, and build jobs passed at the preceding c62d16cd. blacksmith ci reran all 11 cursor adapter tests and both replay contract tests after the final path-label fix. a separate earlier testbox run also passed those 13 tests, server typecheck, and scoped lint (one existing warning). read, command, and mcp expansion were exercised through the real rpc against copied provider data, including dark/light and 390px web layouts; 21 empty legacy grok rows were noninteractive. native mobile remains unverified because device access is disabled; individual provider integrations were not all rerun live.

read expansion recorded with the display layer applied:

all embedded screenshots render in this pr; the read-expansion gif was recorded in the github body and its playback verified.

implemented with claude opus 5.5 in claude code; continued and reviewed with gpt-6-astra in the codex harness, through t3 code.

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

⚠️ The thread fixture changed, so impact percentages are not directly comparable to the main baseline.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	—	5.0 KiB	—	6.8 KiB	✅
Codex	Thread snapshot wire	—	3.8 KiB	—	4.9 KiB	✅
Codex	Live turn WebSocket wire	—	1.2 KiB	—	2.0 KiB	✅
Codex	Live turn WebSocket decoded	—	20.9 KiB	—	29.3 KiB	✅
Codex	Live turn messages	—	2	—	8	✅
Claude	Total thread wire	—	5.0 KiB	—	6.8 KiB	✅
Claude	Thread snapshot wire	—	3.8 KiB	—	4.9 KiB	✅
Claude	Live turn WebSocket wire	—	1.2 KiB	—	2.0 KiB	✅
Claude	Live turn WebSocket decoded	—	21.2 KiB	—	29.3 KiB	✅
Claude	Live turn messages	—	2	—	8	✅

Baseline: 408ff8a · PR result: 33e58e5 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 108.5 KiB
• Claude decoded thread snapshot: 108.8 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR introduces a cross-cutting on-demand tool-output RPC and changes server projections, provider adapters, and web/mobile expansion behavior. The new detail path includes an unresolved High-severity resource-exhaustion concern for very large structured values, and the RPC authorization change is security-sensitive.

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📥 Commits

Reviewing files that changed from the base of the PR and between 10af405 and 33e58e5.

📒 Files selected for processing (2)

• apps/server/src/orchestration-v2/WireProjection.test.ts
• apps/server/src/orchestration-v2/WireProjection.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• apps/server/src/orchestration-v2/WireProjection.test.ts
• apps/server/src/orchestration-v2/WireProjection.ts

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📝 Walkthrough

Walkthrough

The change adds a thread-scoped RPC for retrieving turn-item details, marks withheld output in wire projections, and updates provider adapters to project additional tool results. Mobile and web work logs use the retrieval path to display fetched details and output states.

Changes

Turn-item details and tool projections

Layer / File(s)	Summary
Withheld output contract and wire projection packages/contracts/src/orchestrationV2.ts, apps/server/src/orchestration-v2/WireProjection.ts, apps/server/src/orchestration-v2/WireProjection.test.ts	Turn-item contracts add outputOmitted metadata and the getTurnItem request and result schemas. Wire projections mark withheld command and dynamic-tool output, bound fetched detail, and retain failed-edit errors.
Thread-scoped detail lookup apps/server/src/orchestration-v2/ProjectionStore.ts, apps/server/src/orchestration-v2/Orchestrator.ts, apps/server/src/orchestration-v2/ThreadManagementService.ts, apps/server/src/ws.ts, apps/server/src/auth/RpcAuthorization.ts, packages/contracts/src/rpc.ts	The store, orchestrator, and thread-management service add item lookup by thread and item ID. The WebSocket RPC exposes the lookup with orchestration read authorization.
Provider tool result projections apps/server/src/orchestration-v2/Adapters/*, apps/server/scripts/acp-mock-agent.ts	ACP, Claude, Cursor, OpenCode, and Pi adapters project additional search, fetch, command, and file-change output. Tests and mock-agent fixtures cover these results.
Client detail fetching and work-log display packages/client-runtime/src/work-log/*, packages/client-runtime/src/state/orchestration.ts, apps/web/src/components/chat/*, apps/web/src/state/queries.ts, apps/mobile/src/features/threads/thread-work-log.tsx, apps/mobile/src/lib/threadActivity.ts, apps/mobile/src/lib/threadActivity.test.ts, apps/mobile/src/state/queries.ts	Shared helpers determine which items need detail fetching and format tool values. Mobile and web work logs fetch and render available details, including loading, error, unavailable, and empty-output states.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~50 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant WorkLog as Work-log row
  participant Query as useTurnItemDetail
  participant RPC as getTurnItem RPC
  participant ThreadService as ThreadManagementService
  participant Orchestrator as OrchestratorV2
  participant Store as ProjectionStoreV2
  WorkLog->>Query: Request details for expanded item
  Query->>RPC: Send thread ID, item ID, and revision
  RPC->>ThreadService: Call getTurnItem
  ThreadService->>Orchestrator: Fetch item after transcript hydration
  Orchestrator->>Store: Look up item by thread and item IDs
  Store-->>ThreadService: Return item or null
  ThreadService-->>Query: Return projected item or null
  Query-->>WorkLog: Provide detail result

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Merge Risk: ⚪ Minimal · up to 33e58

Expanded tool rows can retrieve available output, while rows without output remain non-expandable. No actionable issue remains before normal merge checks.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 10af4

The new detail request uses existing environment permissions and checks that the requested item belongs to the supplied thread. No unauthorized disclosure was established. Risk remains low rather than minimal because response limits are not comprehensive and failure, recovery, and mixed-version behavior were only partially verified.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — An authenticated caller with orchestration:read can request persisted detail across threads in the connected environment when identifiers are known. The documented boundary is the environment, not an individual project. Tool results may contain sensitive command, file, or external-tool data; no expansion into another environment was established.

Security Findings and Attack Paths

• observed — The suspected mismatched-thread lookup path is countered in both storage implementations: SQL filters by thread and item together, and the in-memory implementation selects the thread before matching the item. This rejects that substitution path without treating identifier pairing as caller authorization.

Trust Boundaries and Controls

• observed — The WebSocket connection installs scope authorization from its authenticated session. getTurnItem requires orchestration:read, like getThreadProjection, and the shared authorization layer checks the required scope before execution. There is no additional per-thread owner check in the detail service.
• observed — Fetched command and dynamic-tool output in the web output component is rendered as React text inside a pre element, rather than interpreted as HTML. This limits markup injection for that inspected display path.

Resilience and Maintainability Implications

• observed — The mobile request carries environment, source thread, source item, and revision. The shared atom family keys by environment and the complete input and observes connection/session state before requesting data. These controls counter cross-row cache substitution, although late-response cancellation and same-environment session-change behavior remain incompletely verified.

Hardening Proposals

• proposed — Define whether the detail contract promises selected-value limits or a whole-response budget. If a whole-response guarantee is intended, enforce it consistently across item variants and account for encoding and truncation-marker overhead.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 44.44% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 45 functions across 32 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	⚠️ Warning	The description explains the problem, the cross-client and provider changes, and detailed verification. It does not include the required Scope and approval information, and it does not use the templat…	Add the Problem, Change, Scope and approval, and Verification headings. Under Scope and approval, link the triaged issue or maintainer approval with the approval comment. If this is an obvious bug fix that needs no prior approval, explain w…

✅ Passed checks (3 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly summarizes the main change: tool rows fetch and show available output when expanded, while empty rows do not expand.

Full details: Description check

Explanation

The description explains the problem, the cross-client and provider changes, and detailed verification. It does not include the required Scope and approval information, and it does not use the template’s section headings.

Resolution

Add the Problem, Change, Scope and approval, and Verification headings. Under Scope and approval, link the triaged issue or maintainer approval with the approval comment. If this is an obvious bug fix that needs no prior approval, explain why it qualifies as a small, focused fix; otherwise, provide the required approval and scope rationale.

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Actionable comments posted: 1

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🤖 Prompt to fix review comments

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Inline comments:
Review comments at @apps/server/src/orchestration-v2/WireProjection.ts:
- Around line 145-174: Update projectTurnItemForDetail’s command_execution case
to truncate input as well as output using MAX_ON_DEMAND_BYTES, defaulting a null
truncated input to an empty string. Keep the existing output truncation
behavior.

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📥 Commits

Reviewing files that changed from the base of the PR and between 4059607 and 10af405.

📒 Files selected for processing (34)

• apps/mobile/src/features/threads/thread-work-log.tsx
• apps/mobile/src/lib/threadActivity.test.ts
• apps/mobile/src/lib/threadActivity.ts
• apps/mobile/src/state/queries.ts
• apps/server/scripts/acp-mock-agent.ts
• apps/server/src/auth/RpcAuthorization.ts
• apps/server/src/orchestration-v2/Adapters/AcpAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/AcpAdapterV2.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts
• apps/server/src/orchestration-v2/Adapters/CursorAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/CursorAdapterV2.ts
• apps/server/src/orchestration-v2/Adapters/OpenCodeAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/OpenCodeToolItems.ts
• apps/server/src/orchestration-v2/Adapters/PiAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/PiAdapterV2.ts
• apps/server/src/orchestration-v2/Orchestrator.ts
• apps/server/src/orchestration-v2/ProjectionStore.test.ts
• apps/server/src/orchestration-v2/ProjectionStore.ts
• apps/server/src/orchestration-v2/ProviderTurnControlService.test.ts
• apps/server/src/orchestration-v2/ThreadManagementService.ts
• apps/server/src/orchestration-v2/WireProjection.test.ts
• apps/server/src/orchestration-v2/WireProjection.ts
• apps/server/src/relay/AgentAwarenessRelay.test.ts
• apps/server/src/ws.ts
• apps/web/src/components/chat/MessagesTimeline.tsx
• apps/web/src/components/chat/V2ItemInspector.tsx
• apps/web/src/state/queries.ts
• packages/client-runtime/package.json
• packages/client-runtime/src/state/orchestration.ts
• packages/client-runtime/src/work-log/itemDetail.ts
• packages/client-runtime/src/work-log/presentation.ts
• packages/contracts/src/orchestrationV2.ts
• packages/contracts/src/rpc.ts

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