test(webview): F2a - profile-mutation state semantics and the mode-rollback guard

[easonLiangWorldedtech]

Related GitHub Issue

This unit does not close an upstream issue: it is split unit F2a of the durable per-view state (vps2) series, whose split plan is issued and tracked on (issued before this PR opened). It supersedes the closed umbrella PR 1555, and merges in the chain order F1a 1546 → F1b 1550 → F1c 1552 → F2a → F2b → F2c 1921.

Description

Content source of record: kind: commit, base 8554307ec → head bff2a5ca8 (PR 1555), replayed onto the current main tip so the branch carries nothing main already has.

Budget (own delta, not the stacked view): 173 a+d standalone, 12 changed executable lines.

One gate scope: the state semantics of a profile mutation must hold for every live view, not only the view that performed it, and a mode rollback must not be able to persist a profile that no longer exists.

• Activating or upserting a profile refreshes the buffered apiConfiguration of every other live ClineProvider pinned to that profile (refreshViewLocalStateForUpdatedProfile) and re-posts each affected view's state, so no view keeps serving — or running on — settings it buffered before the mutation.
• Deleting a profile re-pins the other live views whose buffer still names it (rePinViewLocalStateForDeletedProfile), replaces their configuration with the surviving profile's, and persists the replacement through the serialized write queue so their durable viewStates entries survive a reload.
• deleteProviderProfile now writes only the profile list back instead of replaying a full settings snapshot, so it cannot clobber unrelated keys (notably viewStates) that concurrent views mutate directly.
• A mode-scoped profile rollback is guarded so a profile that no longer exists cannot be re-persisted.

Also in this head (1b9d6d73f), from review: deleteProviderProfile performs two durable writes — the settings-store commit and the profile-list write. If the list write (or a later selection update) fails, the stored list still names a profile whose settings are gone and no later selection or load can recover them. The settings are now captured before the commit and written back through saveConfig when a later step fails, so the durable metadata and the store agree again (the deletion simply did not happen); the original error is rethrown and a failed compensation is logged with the residual risk stated.

Reviewer focus: the compensation is deliberately a settings restore, not a list rollback — the list write is the step that failed, so the list keeps naming the profile and the store is made to agree with it. Restoring the original id matters: a new id would orphan the task history entries that reference the profile.

Test Procedure

# from the repository root, with dependencies installed (pnpm install)
pnpm --dir src exec vitest run --globals core/webview/__tests__/ClineProvider.spec.ts
pnpm --dir src exec tsc --noEmit

New/updated tests in core/webview/__tests__/ClineProvider.spec.ts:

• refreshes another live view's buffered settings when the profile it pins is reactivated — two live providers; the mutating view is a different instance, and the assertion is on the other view's buffer, its constructed getState(), and that its webview was re-posted.
• re-pins another live view and persists the replacement in its durable view state when its profile is deleted — asserts the other view's in-memory pin, its replaced configuration, and the durable viewStates entry.
• restores the deleted profile's settings when the profile-list write fails after the store commit — the store commit succeeds, the list write rejects, and the test asserts saveConfig is called with the original id and secret while the original error propagates.

Each is verified as a pin, not a mirror of the implementation: the two cross-view tests fail when the helper bodies are made to return early, and the compensation test fails when the production change is stashed.

Environment: Windows 11 / Node 22, vitest lanes run from src/. Local result at this head: ClineProvider.spec.ts 283 passed (280 baseline + 3 new); tsc --noEmit unchanged from this branch's local baseline; eslint clean on both touched files with unchanged suppression counts.

Pre-Submission Checklist

• Issue Linked: No upstream issue is closed by this unit (see above).
• Scope: One gate scope — cross-view state semantics for profile mutations, plus the mode-rollback guard.
• Self-Review: Reviewed against the shipped behavior of the superseded umbrella PR 1555.
• Testing: Three new focused unit tests, each verified as a pin.
• Visual Snapshots: Not applicable — no rendered-state change.
• Documentation Impact: None required; no user-facing setting or message contract changes.
• Contribution Guidelines: Read and agreed. ### Documentation Impact

No documentation change: the user-facing flow (activate / edit / delete a provider profile) is unchanged; only the state each live view ends up with, and the durability ordering inside deletion, changed.

Split-unit issue reference

No approved upstream issue exists for this change. This pull request is one unit of a declared split of a larger change, and the split plan, the unit boundaries and this unit's acceptance criteria are recorded on the tracking issue in this repository: #1992. That issue is the home for this unit's review dispositions and follow-up registrations, which is why no approved issue is linked above.

---

AT-HEAD review walkthrough triage (head 8a43f2b)

All 31 review threads are resolved. The nine latest AT-HEAD walkthrough rows were re-verified against this head:

1. Temporary-viewId adoption (ClineProvider.ts load/rekey) - addressed: rekeyPersistedViewStateEntry treats temporary ids as session counters; a stable entry wins and the temporary entry is dropped, so an unrelated earlier view's entry is not adopted as a stable rekey.
2. undoHistoryWrite assigned without a landed history write - addressed: the closure is a no-op when no history item existed before the switch, and the comment matches the code.
3. Deletion compensation vs concurrent profile-list mutations - addressed: the compensation re-reads the stored list and splices only the deleted profile back at its previous index (test: "restores the deleted profile without dropping one another instance upserted meanwhile").
4. Cancelled deletion not rolled back after the settings commit - addressed (a591a1e): the catch routes every failure, including cancellation, through the compensation; the superseded-contract comments were corrected.
5. Deleting the active profile dropped the live-state half of the old deleteApiConfiguration -> activateProviderProfile path (Major) - fixed at 8a43f2b: the deletion now completes the activation-side effects when the deleted profile was the active one (globally or for this view): the manager's own current-profile record and the current mode's profile mapping follow the survivor, the current task's API handler is rebuilt from the survivor's settings, the current task's sticky profile is refreshed, and ProviderProfileChanged is emitted. Placement mirrors activateProviderProfileUnlocked: after the try/catch, because the deletion has committed. Proofs in the thread reply.
6. Multi-tab creation for settled openInNewTab calls (Major) - addressed: the handler unconditionally creates a new panel via openClineInNewTab; the tracked-panel reveal is not on the settled path.
7. Queue advance contract (Major) - addressed: the queue is deliberately chained to the full run - holding the queue until the run settles is what makes the rollback safe - and the comments describing the superseded contract were corrected.
8. Sidebar-only title commands visible in the command palette - addressed (6cc68ef, within the marked range): the *InTab variants, which target the tracked tab instance and are meaningless from the palette, are hidden with when: false; the sidebar variants are registered once at activation and target the activation-wired provider directly (no per-view registration, no visible-instance heuristic), which is the pre-unit palette behavior.
9. Deletion compensation vs other provider instances (Major) - addressed: same merge-style restore as row 3, with a one-to-one negative control.

Verification numbers (head 8a43f2b)

• ClineProvider.spec 316/316 (2 new tests: rebuild on active-profile deletion; no rebuild when not active)
• webviewMessageHandler.spec 91/91, ClineProvider.sticky-profile.spec 18/18, ProviderSettingsManager.spec 55/55
• Negative control: removing the new deletion-completion block reddens exactly the rebuild test (1 failed / 315 passed); restore byte-exact (hash match)
• tsc 0 errors; eslint --max-warnings=0 clean on both touched files; suppression counts unchanged
• Prettier merge-ref gate ALL-MATCHED

Post-commit activation error distinction (head 91dfd64)

• AT-HEAD thread 4251990874 (Minor, functional correctness): a rejection in the post-commit activation block was reported by the message handler as errors.delete_api_config, misreporting a successful deletion. Fixed: the committed state is posted first, then a distinct ProfileDeletionActivationError (own module profileDeletionError.ts, re-exported by the provider) is thrown; the handler warns with the activation cause instead of the generic delete error.
• Proofs at 91dfd64: ClineProvider.spec 317/317, webviewMessageHandler.spec 92/92 (new tests both sides); negative controls 1-red each, restores byte-exact (hash match); tsc clean except the two known local telemetry-dist noise lines; eslint clean; prettier merge-ref gate ALL-MATCHED. Ported to the sibling unit carrying the same deletion code.

CI re-trigger: heads e704ab4 and 67a9649 are empty commits over 91dfd64 (no content change) to re-run flaked lanes; the visual lane passed at e704ab4, and 67a9649 re-runs the mock-e2e 30s-timeout flake ('persists completed task across a fresh extension host' - the identical tree passed e2e-mock at 91dfd64). All verification numbers above apply unchanged.

Pre-merge ERROR-row pre-check (head d5c69d3)

• Security Boundaries / view-state id rows: addressed at d5c69d3. setViewStateId now rejects non-string ids (crafted postMessage), bounds the key length (MAX_VIEW_STATE_ID_LENGTH), and refuses ids already owned by another live instance; a refused view stays on its temporary id against shared state. Regression tests: non-string, oversized, claimed-by-another-view. Negative controls: disabling the ownership check reddens exactly the claim test; widening the length bound reddens exactly the oversized test; restores byte-exact (hash match).
• The spec gained an afterEach clearing the static instance registry (suites construct providers directly and never dispose most of them; leaked instances would claim ids ahead of later tests).
• Persistence Integrity setValues/setValue ordering rows: verified already addressed by the pushed code: _saveViewLocalStateFromMutation persists the non-secret subset before updating the buffer; the re-key is a single queued write (no delete-then-write window; authorship clears only after the write lands); the mutation hook keeps the buffer synced across setValue/setValues and profile upsert/activation/deletion.
• Deletion sibling-state: addressed - rePinViewLocalStateForDeletedProfile re-pins other live views still buffered on a deleted profile (buffer + durable entry), and deletion snapshots/compensates every store it rewrites. Re-key persistence: single queued write, temp entry survives a failed write.
• The three shared-view handoff tests now dispose the writer before the next view adopts the id (the ownership rule being enforced); the durable entry stays in storage across the handoff.
• Proofs at d5c69d3: sticky-mode 33/33, ClineProvider.spec 317/317, webviewMessageHandler.spec 92/92; eslint --max-warnings=0 clean; tsc clean except the two known local telemetry-dist noise lines; prettier merge-ref gate ALL-MATCHED.
• Non-activating saves (upsertProviderProfile with activate=false, and the zoo-gateway callback's non-active path) rewrote the profile on disk but left pinned views serving the pre-save snapshot; the non-activating branch now refreshes pinned sibling views (and this view when it holds the pin), and the callback routes through upsertProviderProfile so the refresh cannot be forgotten.
• getState() no longer spreads the pinned overlay over the shared provider settings (a key the profile never defined leaked in from the shared profile: model id, region, tuning). The overlay is a complete snapshot: used in place, with only apiProvider falling back to shared state.
• Regression tests: "refreshes views pinned to a profile saved without activation"; "does not leak shared provider keys into a pinned view's api configuration; the zoo-gateway callback test asserts the upsert path.
• Negative controls: dropping the else-branch refresh reddens exactly the refresh test, reverting the merge semantics reddens exactly the leak test; restores byte-exact (hash match).
• Proofs at bf474cd: ClineProvider.spec green, sticky-mode and webviewMessageHandler green, eslint --max-warnings=0 clean, tsc clean except the two known local telemetry-dist noise lines, prettier merge-ref gate ALL-MATCHED.

Follow-up: overlay read from the view buffer (required-lane fix)

The previous round's overlay-completeness change read the overlay from the merged state values, which also carry the raw apiConfiguration state key. That key is a partial patch written by shared-store paths, not a view snapshot: with no overlay present and the raw key partial, getState() served only the partial object and dropped the shared provider settings the previous merge produced (the parallel-mode activation tests caught exactly this - the activated profile's model id vanished; required lane red on the units carrying that spec). The overlay is now read from the view buffer itself, where a present value is by contract a complete profile and an absent one means the shared store serves the settings.

Proofs: ClineProvider.parallelMode.spec green where present (the six synchronization tests that regressed), ClineProvider.spec green including the overlay-completeness tests, sticky-mode and webviewMessageHandler green; negative control: reverting the overlay to a shallow merge over the shared settings still reddens exactly the leak test; restores byte-exact (hash match); eslint --max-warnings=0 clean; tsc clean except the two known local telemetry-dist noise lines; prettier merge-ref gate ALL-MATCHED.

Follow-up: active task handlers rebuilt on non-activating saves (head 7b107d3)

A review round on the view-identity unit found that the non-activating-save refresh updated pinned views' buffers but not their active tasks' API handlers, and the posted state prefers the task's own apiConfiguration: a conversation running in a view pinned to the saved profile kept sending the old token (e.g. after the Zoo Gateway callback rotated it) even though the view's buffer had caught up. The refresh now rebuilds the affected tasks' handlers in the pinned views, and the non-activating branch rebuilds this view's own handler when it holds the pin.

Proofs: ClineProvider.spec green (the pinned-sibling refresh test now asserts the active task's handler is rebuilt with the saved settings, not just the private buffer); negative control: dropping the rebuild from the refresh reddens exactly that assertion, restores byte-exact (hash match); parallelMode/sticky-mode/webviewMessageHandler green; eslint --max-warnings=0 clean; tsc clean except the two known local telemetry-dist noise lines; prettier merge-ref gate ALL-MATCHED.

Follow-up: test-quality round from the review (head eda590a)

The review round on the api-wiring unit named four test-quality issues; the ones present in this unit are fixed here: the viewStates describe block moved out of the alwaysDenyUnapprovedCommands block (test names carried the wrong subject), the prune test's toBeDefined() survival checks replaced with exact-shape toEqual assertions (they pass even if pruning strips fields), the stale-temporary-entry test's fixed 10 ms wait replaced with awaiting the load itself (the negative assertion could pass vacuously on a slow load), and the readiness-cancel test's fake timers restored in a finally block (a failed assertion left fake timers active and hung a later real-timer test).

Proofs: global-settings 9/9 where present, ClineProvider.spec green, sticky-mode green where present, api-task-control green where present; negative controls: pruning that strips updatedAt reddens exactly the prune test, a loadViewState that adopts the unowned temporary-id entry reddens exactly the stale-entry test, restores byte-exact (hash match); eslint --max-warnings=0 clean (src and types); prettier merge-ref gate ALL-MATCHED.

Follow-up: review-round fixes from the series (head acfd9ae)

A review round on the mode-profile-writes unit found that the profile-deletion re-pin updated each sibling view's buffer but not its running task: the posted state prefers the task's own apiConfiguration, so a conversation in a view pinned to the deleted profile kept sending the deleted profile's settings. The re-pin now rebuilds the sibling's API handler with the replacement's settings and re-points the task's sticky profile name, mirroring the activation path.

Proofs: ClineProvider.spec and sticky-mode green; eslint --max-warnings=0 clean; tsc clean except the two known local telemetry-dist noise lines; prettier merge-ref gate ALL-MATCHED. The rebuild's negative control (dropping it reddens exactly the sibling re-pin test, byte-exact restore) runs in the units that own that test.

---

Updated this round (port of the two upstream PR 1921 review fixes)

acfd9ae -> 54b3890

Ported the two fixes landed on the sibling unit (fork PR 43 / upstream PR 1921 at 2e932e8). This unit carries the same shared code (provider-profile mutation queue + sibling re-pin), so the same review findings apply to this branch:

1. providerProfileMutationQueue is now shared across instances (static). The per-instance queue let a second view commit between this view's shared write and its snapshot compensation, and the compensation restored a stale copy over the newer write; one queue now serializes every view's profile mutations against each other.
2. The sibling re-pin now switches each view's task (API handler rebuild + sticky profile name) only after every sibling's re-pin landed. Running those updates inside the per-sibling loop left a successful sibling's task on the replacement's handler and sticky name while its pin was compensated back to the deleted profile after a later sibling's rejected re-pin rolled the deletion back.

Tests: this unit has no ClineProvider.parallelMode.spec.ts (parallel-mode lineage), so both regression tests land in ClineProvider.spec.ts next to the existing re-pin rollback tests - cross-instance serialization + sibling-task rollback - adapted to this unit's manager-double and saveViewState pin conventions.

Proofs: ClineProvider.spec 321/321 (2 new tests); sticky-mode + sticky-profile + webviewMessageHandler 143/143; negative controls: per-instance queue shadow reddens exactly the serialization test, task updates moved back into the per-sibling loop redden exactly the sibling-task test, both restores byte-exact (hash match 7c41a7db88ee1710); eslint --max-warnings=0 clean, suppression counts unchanged; tsc = 2 known donor telemetry-dist noise lines only (real 0); prettier touched files clean and the full merge-ref tree gate ALL-MATCHED @617037b1c (base 54b3890).

---

Updated this round (CodeRabbit follow-up, head 28e969c)

• Non-activating profile saves no longer force-rebuild the API handler of a view whose active task follows a different sticky profile: both rebuild sites (the acting view's pinned branch and the pinned-sibling refresh) are guarded by taskApiConfigName === saved profile; pinned-view overlays still refresh. Regression tests cover both sites (negative control: removing either guard reddens exactly its test).
• Test hygiene: prune assertions compare full kept entries; the webview state-payload test renamed to describe what it asserts.
• Verified: ClineProvider.spec 323 green, sticky-mode 33 green, eslint --max-warnings=0 clean, tsc real=0, prettier clean.

---

Updated this round (CodeRabbit follow-up 2, head 9afc9d8)

• Deleted-profile re-pin: the forced task-handler rebuild and the sticky-name rewrite (post-loop task pass in this unit's compensated re-pin) now require taskApiConfigName === deleted profile (the view-buffer re-pin stays unconditional), so a pinned view whose task follows another sticky profile keeps its conversation's settings and persisted profile name. Regression test included (negative control: removing the guard reddens exactly that test).
• Verified: ClineProvider.spec 324 green, sticky-mode 33 green, eslint --max-warnings=0 clean, tsc real=0, prettier clean.

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📒 Files selected for processing (3)

• src/core/webview/ClineProvider.ts
• src/core/webview/__tests__/ClineProvider.spec.ts
• webview-ui/src/context/__tests__/ExtensionStateContext.spec.tsx

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GitHub Actions: Changed-code mutation testing / 0_mutation-diff.txt: test(webview): F2a - profile-mutation state semantics and the mode-rollback guard

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##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
 �[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
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 Mutation gate failed: extension has 1312 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
 ##[error]Process completed with exit code 1.

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📝 Summary

Summary by CodeRabbit

• New Features
  • Mode and provider-profile selections are saved per webview, allowing tabs to retain their selections across launches.
  • New Task, Settings, Marketplace, and History buttons in an editor tab act on that tab.
  • Opening a new tab reuses an existing live tab when available; focus actions target the tracked tab when present.
• Bug Fixes
  • Missing provider profiles are handled gracefully, with recovery to an available selection.
  • Settings imports and exports exclude per-view selections, while imports preserve existing selections.
  • Webview launch and state handling continue when view-state registration or browser storage is unavailable.
  • Deleting a missing profile cleans up stale entries, while attempts to delete the last profile remain blocked.
  • Generic settings updates can no longer change provider-managed configuration.

The change adds stable view IDs and persisted per-view mode and profile selections. It updates profile and webview settings handling, and adds separate commands for editor-tab actions with tracked panel-provider routing.

Changes: Per-view state and provider behavior

Layer / File(s)	Summary
View identity and persisted state packages/types/src/global-settings.ts, webview-ui/src/utils/vscode.ts, webview-ui/src/context/ExtensionStateContext.tsx, src/core/config/*, src/core/webview/ClineProvider.ts	The schema supports persisted view-state entries. The webview creates an ID and sends it at launch. Import and export omit viewStates; ClineProvider loads, persists, and merges per-view selections.
View-local state and mode operations src/core/webview/ClineProvider.ts, src/core/webview/__tests__/ClineProvider.spec.ts, src/core/webview/__tests__/ClineProvider.sticky-mode.spec.ts	ClineProvider overlays view-local values on shared state. Mode switching checks cancellation and attempts rollback after persistence or task-update failures. History restoration stores mode per view.
Profile lifecycle and webview settings src/core/config/ProviderSettingsManager.ts, src/core/webview/ClineProvider.ts, src/core/webview/webviewMessageHandler.ts, src/core/webview/__tests__/*	Missing profiles use a typed error. Profile changes synchronize affected views. Webview updates skip host-owned keys, and profile deletion goes through ClineProvider.

Editor-tab command routing

Layer / File(s)	Summary
Tab command registration and routing packages/types/src/vscode.ts, src/package.json, src/activate/registerCommands.ts, src/activate/__tests__/registerCommands.spec.ts	The extension adds tab-specific title commands. Handlers route actions to tracked tab providers.
Tab panel creation and lifecycle src/activate/registerCommands.ts, src/activate/__tests__/registerCommands.spec.ts	Tab creation shares in-flight work, reuses tracked panels with providers, and attempts cleanup after setup failures.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~60 minutes

Change: Feature

Merge Risk: 🟡 Moderate · up to 9afc9

A view with a saved mode pin can remain on its old selection after custom-mode creation or deletion, potentially retaining a deleted mode. Resolve or explicitly accept this behavior before merging.

Security Architecture Review

Security architecture risk: 🟡 Moderate · up to b4057

Owner-specific command routing improves isolation between views. However, profile deletion can propagate a replacement profile name without matching configuration after a lookup failure. This could leave subsequent work using an unintended account or endpoint. Failure and recovery coverage remains incomplete.

Retained concerns

• Medium · security · inferred: The new multi-view deletion transition publishes replacement profile names even when replacement configuration lookup fails. Configuration replacement is conditional, but durable re-pinning continues, leaving affected views capable of serving the deleted profile’s cached configuration under another profile’s name. This extends a pre-existing shared-selection inconsistency into other live views and their persisted selections.

Security review details

Security Blast Radius

• inferred — The identified consistency exposure extends to live provider views sharing the profile and settings store, including views other than the deletion initiator. Its sensitive consequence is subsequent work inheriting unintended provider configuration; broader tenant, service, environment, or IAM exposure has not been established.

Security Findings and Attack Paths

• inferred — If the public deletion transition runs and replacement lookup fails, it can persist the replacement name while retaining the removed profile’s configuration overlay. Later task creation can consume that configuration. This supports a conditional account or endpoint misselection risk, not verified exfiltration or an unauthenticated attack path; production caller reachability remains unresolved.

Trust Boundaries and Controls

• observed — Client-supplied persistence IDs are normalized and reject proto; restoration checks that persisted modes still resolve. These are storage-key and semantic-validation controls, not demonstrated authentication controls. Tab command ownership uses actual panel identity rather than the client-supplied persistence ID.

Resilience and Maintainability Implications

• observed — Tracked-tab handlers stop when no owning provider resolves. Concurrent tab creation shares a pending operation, and disposal clears the tracked panel only when identities match, containing ordinary duplicate-creation and stale-cleanup failures.

Hardening Proposals

• proposed — Resolve and validate replacement configuration before committing deletion, and reconcile selected identity and effective settings together across affected views. If reconciliation fails, prevent affected views from starting new work until a matching configuration is established.
• proposed — For the residual mode-cancellation limitation, define a terminal cancellation contract covering every durable write and late completion. Validate compensation and ordering when cancellation occurs during shared or per-view persistence, rather than treating pre-write checks as complete cancellation protection.

Caution

Pre-merge checks failed

Please resolve all errors before merging. Addressing warnings is optional.

• Ignore (reviewers only)

Failed checks (2 errors, 2 warnings)

Check name	Status	Explanation	Resolution
Security Boundaries		The changed view-state path still leaks profile secrets across views. webviewMessageHandler.ts:592-610 accepts the webview-supplied viewStateId and calls setViewStateId. `ClineProvider.ts:756-76…	Bind each stable ID to the owning extension-host webview, or use a host-minted capability that the webview cannot choose. Reject IDs that are not issued or bound to the current provider before loading or re-keying persisted state. Preserve …
Persistence Integrity		The changed deletion path can leave sibling persisted state inconsistent. rePinViewLocalStateForDeletedProfile re-pins sibling viewStates entries, then attempts rollback when one sibling write fai…	Track every sibling re-pin that lands and pass those snapshots into deletion compensation. Restore each sibling's prior pin and overlay through the serialized view-state write queue, awaiting each restore independently. Collect sibling rest…
Regression Evidence		The prior coverage gap remains. src/package.json changes the visible editor/title menu for active zoo-code.TabPanelProvider panels and adds four tab-specific commands. registerCommands.spec.ts…	Add a Playwright Electron visual test that opens an active zoo-code.TabPanelProvider, waits for the editor title bar, and captures a deterministic baseline showing the New Task, Settings, Marketplace, and History actions with their expect…
Lifecycle Resource Cleanup		The prior lifecycle leak remains. ClineProvider adds itself to activeInstances at src/core/webview/ClineProvider.ts:437, before getWorkspacePath() and the remaining synchronous constructor wor…	Register the provider only after synchronous constructor initialization succeeds, or add failure-safe constructor/factory cleanup that removes it from activeInstances and disposes every resource created before failure. Start tab-creation …

Passed checks (4 passed)

Check name	Status	Explanation
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.
Title check		The title clearly identifies the profile-mutation state semantics and mode-rollback guard addressed by the pull request. The test prefix is somewhat narrow because the changes also include productio…
Description check		The description provides the change scope, implementation details, reviewer focus, test commands, reported results, checklist status, documentation impact, and tracking issue reference. It does not us…

Full details: Regression Evidence

Explanation

The prior coverage gap remains. src/package.json changes the visible editor/title menu for active zoo-code.TabPanelProvider panels and adds four tab-specific commands. registerCommands.spec.ts covers handler routing and provider identity, but it does not render the VS Code title bar. The reviewed diff adds no Playwright visual test or screenshot baseline. The existing Electron visual suite covers only welcome/chat sidebar scenes, and its committed baselines contain no tab-title-bar coverage.

Resolution

Add a Playwright Electron visual test that opens an active zoo-code.TabPanelProvider, waits for the editor title bar, and captures a deterministic baseline showing the New Task, Settings, Marketplace, and History actions with their expected visibility. Keep the existing unit routing tests.

Full details: Security Boundaries

Explanation

The changed view-state path still leaks profile secrets across views. webviewMessageHandler.ts:592-610 accepts the webview-supplied viewStateId and calls setViewStateId. ClineProvider.ts:756-768 rejects only IDs held by another live provider, while dispose() removes the owner from activeInstances at ClineProvider.ts:1244-1251; the durable entry remains after disposal, as also asserted by the changed test at ClineProvider.spec.ts:6005-6021. A second webview can therefore replay a known old ID after its owner closes. loadViewState() resolves the persisted profile at ClineProvider.ts:821-828, retaining its secret fields, and getState() overlays that configuration at ClineProvider.ts:4450-4459; the launch path posts the resulting state at webviewMessageHandler.ts:606-610. This is a concrete changed path from an unvalidated webview-controlled ID to another webview receiving API credentials.

Resolution

Bind each stable ID to the owning extension-host webview, or use a host-minted capability that the webview cannot choose. Reject IDs that are not issued or bound to the current provider before loading or re-keying persisted state. Preserve only a controlled reload/re-adoption path. Add a regression test that disposes the original provider, sends its known ID in webviewDidLaunch on another provider, and verifies that profile settings and secrets are not loaded or posted.

Full details: Persistence Integrity

Explanation

The changed deletion path can leave sibling persisted state inconsistent. rePinViewLocalStateForDeletedProfile re-pins sibling viewStates entries, then attempts rollback when one sibling write fails. If a sibling rollback also fails, lines 3452-3463 only log the error and line 3465 rethrows. deleteProviderProfileUnlocked compensates only the deleting view at lines 3013-3071. A sibling can therefore remain durably pinned to the replacement after deletion is rolled back, so a reload serves the wrong profile.

Resolution

Track every sibling re-pin that lands and pass those snapshots into deletion compensation. Restore each sibling's prior pin and overlay through the serialized view-state write queue, awaiting each restore independently. Collect sibling restore failures and raise an explicit inconsistent-state error that identifies the affected view; do not report the deletion as cleanly rolled back when any sibling restore fails.

Full details: Lifecycle Resource Cleanup

Explanation

The prior lifecycle leak remains. ClineProvider adds itself to activeInstances at src/core/webview/ClineProvider.ts:437, before getWorkspacePath() and the remaining synchronous constructor work. createTabPanelUnlocked constructs the provider at src/activate/registerCommands.ts:398-405, but its cleanup try starts at line 409. If a workspace API, watcher registration, or later synchronous constructor step throws, construction returns no provider, so disposeFailedTabCreation() cannot run. The strong registry reference retains the partial provider. initializeTaskHistoryStore() can also start a task-history watcher and timer, and loadViewState() starts asynchronous work without cancellation when a later constructor step fails.

Resolution

Register the provider only after synchronous constructor initialization succeeds, or add failure-safe constructor/factory cleanup that removes it from activeInstances and disposes every resource created before failure. Start tab-creation cleanup before provider construction. Track initialization promises, cancel and await loadViewState(), and dispose or otherwise stop TaskHistoryStore.initialize() when initialization fails.

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[easonLiangWorldedtech]

Security Boundaries row: same defect as the chain-level registration for view-state identity (comment 6103430632 on PR 1921). The webview-supplied viewStateId is not bound to the sending view, and the enforceable fix needs a host-minted id (or an equivalent host-held mapping) plus a re-registration round-trip, which touches the shared view-state primitive rather than this consumer unit. Two host-side enforcement attempts on this unit were reverted because they broke legitimate view re-adoption. No new argument here; deferring to the existing registration.

[easonLiangWorldedtech]

Persistence Integrity row: implemented. Profile activation and upsert now snapshot every affected store before the first write, serialize the writes with landed flags, and on failure restore each landed store newest-first: the profile record, the profile list, the per-mode mapping, the shared selection (restored separately from the acting view's durable pin), the shared provider settings, and the sibling view-local buffer refresh - every affected view is undone, not just the failing one. When a rollback itself fails, the mutation surfaces a distinct inconsistent-state error instead of reporting success.

This completes the compensation half of Follow-up 11 (comment 6092123982): the activation shape already shipped in the sibling unit at 1b9ae30 is ported here and extended to the upsert fan-out, so the sibling unit should port the fan-out compensation back. Covered by six new tests; negative controls: one mutant per restored store plus a run of the new tests against pre-fix production, each killing the expected test.

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Actionable comments posted: 1

---

• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @src/core/webview/ClineProvider.ts:
- Line 2672: Replace the post-save `return id` in the profile-upsert flow with
an error path when `signal.aborted` is true, so control reaches
`compensateProfileActivation` and restores the written record. Add tests that
abort during `saveConfig`, verifying creation deletes the new record and update
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GitHub Actions: Changed-code mutation testing / 0_mutation-diff.txt: test(webview): F2a - profile-mutation state semantics and the mode-rollback guard

Conclusion: failure

View job details

##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
 �[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
 �[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
 shell: /usr/bin/bash -e {0}
 env:
   PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
   STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
   HEAD_SHA: 12efcbb318011d59cdcc30ad0d1dfb710b582270
 ##[endgroup]
 Mutation gate failed: extension has 1188 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
 ##[error]Process completed with exit code 1.

---

GitHub Actions: Changed-code mutation testing / mutation-diff: test(webview): F2a - profile-mutation state semantics and the mode-rollback guard

Conclusion: failure

View job details

##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
 �[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
 �[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
 shell: /usr/bin/bash -e {0}
 env:
   PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
   STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
   HEAD_SHA: 12efcbb318011d59cdcc30ad0d1dfb710b582270
 ##[endgroup]
 Mutation gate failed: extension has 1188 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
 ##[error]Process completed with exit code 1.

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🧠 Learnings (1)

📓 Common learnings

Learnt from: easonLiangWorldedtech
Repo: Zoo-Code-Org/Zoo-Code PR: 1919
File: src/core/webview/ClineProvider.ts:2740-2745
Timestamp: 2026-10-11T02:27:35.706Z
Learning: In Zoo-Code's durable per-view state series, the provider-profile mutation queue in src/core/webview/ClineProvider.ts is per instance. Cross-provider atomic updates of listApiConfigMeta require coordination across every writer, not only deletion compensation. The maintainer places that contract redesign at chain level, outside the F2a unit. Do not treat re-reading the list and splicing the deleted profile back as an atomic merge at commit time.

🔇 Additional comments (6)

src/core/webview/ClineProvider.ts (6)

206-245: LGTM!

---

2495-2640: LGTM!

---

2654-2671: LGTM!

Also applies to: 2674-2722

---

2733-2740: LGTM!

---

3079-3135: LGTM!

---

3178-3241: LGTM!

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Actionable comments posted: 1

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only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
Review comments at @src/core/webview/ClineProvider.ts:
- Around line 3040-3058: Update deleteProviderProfile and its caller so
activation failures after the deletion is committed are distinguished from
deletion failures: post the committed state, then propagate a distinct
activation error without swallowing its cause. Handle that error separately from
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GitHub Actions: Changed-code mutation testing / 0_mutation-diff.txt: test(webview): F2a - profile-mutation state semantics and the mode-rollback guard

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View job details

##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
 �[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
 �[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
 shell: /usr/bin/bash -e {0}
 env:
   PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
   STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
   HEAD_SHA: 92389fb330f9c0dc385d8abe183652fbbfa3531a
 ##[endgroup]
 Mutation gate failed: extension has 1216 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
 ##[error]Process completed with exit code 1.

---

GitHub Actions: Changed-code mutation testing / mutation-diff: test(webview): F2a - profile-mutation state semantics and the mode-rollback guard

Conclusion: failure

View job details

##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
 �[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
 �[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
 shell: /usr/bin/bash -e {0}
 env:
   PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
   STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
   HEAD_SHA: 92389fb330f9c0dc385d8abe183652fbbfa3531a
 ##[endgroup]
 Mutation gate failed: extension has 1216 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
 ##[error]Process completed with exit code 1.

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• src/core/webview/ClineProvider.ts

Check strict typing and exhaustive behavior across normal, boundary, error, cancellation, retry, and compatibility paths.

⚙️ CodeRabbit configuration file

Files:

• src/core/webview/ClineProvider.ts

Verify extension/webview contracts, cancellation and error propagation, VS Code lifecycle correctness, and behavior under retries and partial failure.

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• src/core/webview/ClineProvider.ts

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🔇 Additional comments (1)

src/core/webview/ClineProvider.ts (1)

2837-2841: LGTM!

Also applies to: 2904-2905

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