fix: derive interaction wire projection

[thymikee]

Summary

Derive interaction wire echo fields from command metadata instead of filtering backend fields in the response builder.

Move Apple runner diagnostic stripping to a runner-owned projection so touch response construction only composes already-projected wire data.

Validation

pnpm --pm-on-fail=ignore format
pnpm --pm-on-fail=ignore typecheck
pnpm --pm-on-fail=ignore lint
pnpm --pm-on-fail=ignore exec vitest run src/commands/interaction/metadata.test.ts src/platforms/apple/core/tests/runner-result-projection.test.ts src/daemon/handlers/tests/interaction.test.ts src/mcp/tests/command-tools.test.ts src/commands/interaction/runtime/interactions.test.ts --project unit-core
pnpm --pm-on-fail=ignore exec vitest run --project interaction-contract test/integration/interaction-contract/interaction-response-shape.contract.test.ts test/integration/interaction-contract/direct-ios-selector.contract.test.ts
pnpm --pm-on-fail=ignore test:integration:provider
pnpm --pm-on-fail=ignore test:coverage
pnpm --pm-on-fail=ignore build
pnpm --pm-on-fail=ignore check:fallow --base origin/main

[github-actions]

Size Report

Metric	Base	Current	Diff
JS raw	1.6 MB	1.6 MB	+1.5 kB
JS gzip	502.9 kB	503.4 kB	+468 B
npm tarball	601.5 kB	601.9 kB	+474 B
npm unpacked	2.1 MB	2.1 MB	+1.5 kB

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	26.3 ms	25.8 ms	-0.5 ms
CLI --help	51.7 ms	51.4 ms	-0.2 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/interaction.js	+14.7 kB	+4.8 kB
dist/src/sdk-batch.js	+510 B	+174 B
dist/src/internal/daemon.js	0 B	-3 B
dist/src/registry.js	-1 B	+1 B
dist/src/device-rotation.js	0 B	-1 B

[thymikee]

Review finding: the PR adds CommandField.wireEcho and wraps the interaction fields with wireEchoField, but the production projector never reads that command metadata. projectInteractionWireData still uses the separate hand-authored INTERACTION_WIRE_ECHO_FIELDS map, and the new tests call that map-backed projector directly. That leaves the command surface and wire projection able to drift silently: changing a field's wireEcho options would not affect the response shape or fail a drift test. Please either derive the projection specs from the command field metadata, or remove the unused wireEcho metadata and make the duplicated projection map the explicit source of truth with coverage that guards future drift.

[thymikee]

Addressed the drift concern in 37b9ead.

What changed:

• Removed the unused CommandField.wireEcho / wireEchoField path, so command field metadata can no longer drift from production behavior.
• Moved wire echo defaults into a small core interaction-wire-echo module and attached the response projection trait to the command descriptor entries for click, press, and fill.
• Updated projectInteractionWireData to resolve projection specs through resolveCommandWireProjection instead of reading a local command-name map.
• Added a focused test asserting the descriptor-owned projection for press/fill and no projection for longpress.

Validated locally:

• pnpm --pm-on-fail=ignore exec vitest run src/core/tests/interaction-wire-projection.test.ts src/platforms/apple/core/tests/runner-result-projection.test.ts src/daemon/handlers/tests/interaction.test.ts --project unit-core
• pnpm --pm-on-fail=ignore typecheck
• pnpm --pm-on-fail=ignore lint
• pnpm --pm-on-fail=ignore format
• pnpm --pm-on-fail=ignore build
• pnpm --pm-on-fail=ignore check:layering
• pnpm --pm-on-fail=ignore check:fallow --base origin/main (rerun with escalation because the sandbox could not create fallow's temporary base worktree)

Remaining blocker: none locally. GitHub CI has restarted for the pushed commit and is still running.