smoke test: switch to compile-check + use .product reference shape

[TeoSlayer]

After #9 the smoke gets past the checksum + awk + heredoc bugs but still fails on two structural issues:

1. The smoke's generated `Package.swift` uses `dependencies: ["Pilot"]` shorthand:
   ```
   error: 'smoke': product 'Pilot' required by package 'smoke' target 'smoke' not found.
   Did you mean '.product(name: "Pilot", package: "sdk-swift")'?
   ```
2. The current step is `swift run smoke`, but the README snippet calls `Pilot.start(...)` which dials a daemon socket. CI has no daemon.

Same shape as the sdk-node fix that just landed: switch from execution to compile-check against the freshly-built SDK. `swift build` (no `run`) catches the renames-and-signature-drifts the smoke is actually there to guard, without needing a daemon.

Steps:

• Use `.product(name: "Pilot", package: "sdk-swift")` in the smoke's Package.swift
• Replace `swift run smoke` with `swift build --target smoke` (or equivalent)
• Confirm a deliberately-broken snippet (e.g. wrong method name) fails the build with a useful error

[TeoSlayer]

Closing as part of an explicit project-wide backlog reset. This closure does not mean the requested functionality is implemented or the reported defect is resolved. The work is being consolidated into a new enterprise control-plane, governance, security-hardening, and assurance implementation plan.