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	+1.4 kB
JS gzip	502.9 kB	503.4 kB	+436 B
npm tarball	601.5 kB	601.9 kB	+462 B
npm unpacked	2.1 MB	2.1 MB	+1.4 kB

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	27.4 ms	30.1 ms	+2.7 ms
CLI --help	55.5 ms	55.3 ms	-0.2 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/interaction.js	+14.3 kB	+4.7 kB
dist/src/device-rotation.js	+653 B	+197 B
dist/src/registry.js	+267 B	+108 B
dist/src/internal/daemon.js	0 B	-4 B
dist/src/session.js	0 B	-1 B