fix(dashboard): generate settings PATCH contracts

[ScriptedAlchemy]

Project PATCH returns { outcome: "effect", value: ... }, while the dashboard expected { Effect: ... }. A saved change could therefore appear to have failed. The dashboard also treated every HTTP 409 as a revision conflict, including idempotency conflicts and cancellation.

This exports the PATCH wrapper and typed configuration refusals from Rust, regenerates their dashboard contracts, and consumes those generated decoders. A changed result is saved when execution and its durable committed receipt are complete and the returned current revision advances. The receipt's recorded reconciliation state is displayed separately, including the daemon's real Pending result. Explicit-null no-ops succeed; partial or uncertain effects require loading current values before another write. Refusals retain validation, revision, authority and application-problem semantics with canonical status checks. The temporary artifact-export workflow is removed.

The shared success fixture now comes from the mounted daemon HTTP journey and its real configuration effect construction. That journey checks durable read-back, receipt/current revision agreement, no-op, validation, idempotency and stale-CAS responses. The constructed effect fixture is deleted.

Validation:

• Exact Bazel daemon settings journey: 1 passed, 133 filtered; invocation c46fdaf2-c1df-46e5-96fa-9d38c60e5c84, with stable inputs and the updated embedded dashboard bundle.
• 98 focused generator, consumer, settings DOM/reducer and scoped-write tests passed using the emitted daemon fixture. A final consumer-file rerun passed all 9 tests after a test-helper type annotation.
• Dashboard typecheck and production build passed. The receipt-label follow-up passed all 36 settings DOM tests and typecheck.
• Canonical contracts:generate and contracts:check passed for dashboard, TypeScript SDK and Rust descriptor outputs; the reconciliation correction changes no wire schema.
• Bazel API presentation tests (2) and API unit tests (60) passed after migrating the remaining test caller to typed refusals; validation and revision-conflict wire assertions remain intact.

Fixes #4184

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[devin-ai-integration]

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