[juliusmarminge]

Problem

Full access currently derives Claude permission mode only from T3's requested runtime policy. When Claude disables bypass, its fallback still needs approval even if T3's policy says never ask.

Change

This first layer lets the existing query-policy compiler accept effective bypass/Auto availability. Restricted Full access becomes Auto, or default when Auto is also disabled, installs approval handling, and omits dangerous bypass flags. Other requested modes keep their existing behavior. The next layer resolves settings and uses this policy throughout the adapter.

Stack base: #21806 is the dependent integration layer.

Rebuilt from #15964 by @shivamhwp. The original 1,858-line change is replaced by policy and integration layers; generic bounded-cache machinery and its tests were discarded.

Verification

Verification: one focused case in the existing adapter suite covers downgrade, forced approval, and unchanged explicit Auto. The complete integrated stack passes 291/291 adapter cases, scoped lint/format, and server-only typecheck. The initial behavior regressions failed before implementation. Independent adversarial reviews cover both layer diffs and the combined change; final round four returned no actionable findings from either reviewer. CI for this published head is tracked separately.

Scope and approval

Original scope discussion. Human approval of the Full access downgrade and fail-closed policy remains outstanding. This is unmerged review work; enterprise/MDM and native platforms have not been verified. Integrated proof belongs to the next layer.

Models/harness: tests gpt-6-astra / Codex; implementation gpt-6.1-sol / Codex; review gpt-6-sol / Codex and claude-opus-5-5 / Claude.

[macroscopeapp]

Approvability

Verdict: Needs Human Approval

Macroscope's review found this PR requires human approval — The PR adds a narrowly scoped, tested fallback for Claude permission modes while preserving existing behavior for current callers. Because it governs permission bypass and approval enforcement, the change warrants human review even though its current production call sites use the compatibility default.

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[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 69058dc and 90fff48.

📒 Files selected for processing: 1

• apps/mobile/src/features/threads/ThreadDetailScreen.tsx

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📝 Walkthrough

The Claude runtime policy now accepts bypass-availability settings. When bypass permissions are disabled, it selects auto or default as the fallback and installs the permission callback. Tests cover both fallback cases. The thread detail screen imports useCallback.

Changes: Claude runtime policy

Layer / File(s)	Summary
Policy fallback and callback apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts, apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts	The policy function accepts availability flags and downgrades unavailable bypass requests to auto, or to default when auto mode is also disabled. It installs the permission callback for downgraded requests. Tests cover both fallback modes.
Thread detail import update apps/mobile/src/features/threads/ThreadDetailScreen.tsx	The file imports React's useCallback. No runtime behavior change is shown.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Suggested reviewers: t3dotgg

Merge Risk: 🟡 Moderate · up to 90fff

When Claude disables bypass, Full-access requests may still be silently approved instead of requiring user approval. Wire effective availability into the production query path before merging.

Pre-merge checks: 3 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Description check		The description includes the required Problem, Change, Scope and approval, and Verification sections. It explains the behavior, implementation, tests, limitations, and dependent work. However, the req…	Add a link to explicit maintainer approval of the Full access downgrade and fail-closed policy, including the approval comment. If the change qualifies as an obvious focused fix without prior approval, explain that exemption instead.

Passed checks: 3 passed

Check name	Status	Explanation
Title check		The title clearly identifies the Claude fix and the bypass-disabled approval behavior.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description includes the required Problem, Change, Scope and approval, and Verification sections. It explains the behavior, implementation, tests, limitations, and dependent work. However, the required maintainer approval is explicitly still outstanding, and no approval comment is linked.

Resolution

Add a link to explicit maintainer approval of the Full access downgrade and fail-closed policy, including the approval comment. If the change qualifies as an obvious focused fix without prior approval, explain that exemption instead.

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[coderabbitai]

Actionable comments posted: 1

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at
@apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:
- Line 1867: Update the `openQuery` flow to read the effective Claude bypass
availability settings before opening the query and pass them as `availability`
to the production policy function. Preserve the existing default for callers
that do not provide availability, while ensuring settings that disable bypass
mode prevent selecting `bypassPermissions` and install the callback.

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📒 Files selected for processing: 2

• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	5.0 KiB	5.0 KiB	0 B (0.0%)	6.8 KiB	✅
Codex	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Codex	Live turn WebSocket wire	1.2 KiB	1.2 KiB	0 B (0.0%)	2.0 KiB	✅
Codex	Live turn WebSocket decoded	20.9 KiB	20.9 KiB	0 B (0.0%)	29.3 KiB	✅
Codex	Live turn messages	2	2	0 (0.0%)	8	✅
Claude	Total thread wire	5.0 KiB	5.0 KiB	+31 B (+0.6%)	6.8 KiB	✅
Claude	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Claude	Live turn WebSocket wire	1.2 KiB	1.2 KiB	+31 B (+2.6%)	2.0 KiB	✅
Claude	Live turn WebSocket decoded	21.2 KiB	21.2 KiB	+41 B (+0.2%)	29.3 KiB	✅
Claude	Live turn messages	1	2	+1 (+100.0%)	8	✅

Baseline: 7ce7fe3 · PR result: 90fff48 · 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

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