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Michał Pierzchała 03c3984066 perf(contracts): granularize entry surfaces so hub importers stop evaluating the facade clump (#1969)
* perf(contracts): granularize entry surfaces so hub importers stop evaluating the facade clump

`@agent-device/contracts/platform` unions 32 vocabulary modules and
`/interaction` another 18. A file that value-imports either evaluates the whole
union to reach one function, and because permanent hubs sat behind them —
`command-descriptor/registry.ts`, `core/capabilities.ts`,
`interactors/register-builtins.ts`, `command-descriptor/platform-execution-entry.ts` —
that union rode into roughly half the unit suite's test graphs.

Give every vocabulary module its own entry subpath and move all value-importers
onto the module that owns the symbol. Type-only importers are left alone: `import
type` is erased, so it already evaluated nothing.

Measured with the #1950 eager-import-closure walker over all 974 unit-core test
files, against base e5bfde3d1:

  aggregate eager module evaluations  143,248 -> 129,738  (-9.4%)
  facades/platform.ts   carried by    466 -> 1 test graphs
  facades/interaction.ts carried by   451 -> 0 test graphs

  registry.ts                 105 -> 66
  capabilities.ts             113 -> 76
  register-builtins.ts        111 -> 73
  platform-execution-entry.ts  43 -> 3
  dispatch.ts                 134 -> 100

Three gate adjustments the split forces:

- R11's pinned contracts subpath list grows to the new entries, and the resolver
  test's "must not resolve" example moves to `./clipboard`, since `./gesture-plan`
  is now a real entry.
- R16 anchored the record-runtime join on the literal `contracts/platform`
  specifier. It now accepts any contracts entry — the assertion's provenance is
  what the rule pins, not which subpath carried it.
- `gesture-plan.ts` became an entry target, and the no-bare-star rule rejects the
  `export * from './gesture-plan-types.ts'` it carried. Its one internal consumer
  now imports the owning module directly.

Both facades keep their type re-exports for the ~490 type-only importers, so
every symbol on them now reads as value-unused; one fallow entry records that
and names retiring them as the follow-up.

Closes #1959

* test(contracts): text-filter the facade scan before parsing

The repo-wide scan parsed all ~3000 sources, which the coverage lane's
instrumentation pushed past both the 5s test timeout and the 2.5s slow-test
budget. A file that never names the specifier cannot import it, so filter on the
text first and parse only the ~490 candidates.

Non-vacuity moves with it: instead of counting narrow imports across every file,
require that the surviving type-only importers were seen and classified as
erased — which an empty scan cannot satisfy.
2026-08-22 15:35:38 +02:00
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