EnvironmentLoader.Load has returned a constant empty catalog since live
discovery was retired, leaving a zombie chain: loader interface, catalog
types, degraded-error semantics kept alive only by a `var _ =` suppressor,
and runner/recovery fallback branches that could never succeed.
- loader.go shrinks to the env constants and CLIFlagHint; the
DiscoveryCatalog / DiscoveryCatalogLoader / DiscoveryDegraded families
are deleted.
- runtimeRunner and recoveryRuntime drop the loader field; a direct-runtime
miss is now terminal through handleCatalogMiss, and recovery endpoint
resolution is directRuntimeEndpoint only. directRuntimeToolEndpoint loses
its sole caller and is removed.
- Tests: loader-injection branches are deleted; live-behavior coverage
(mock mode, direct-runtime hit/miss, recovery resolution, catalog-miss
error path) is rewritten against the new flow.
Complete the in-flight rename: Catalog / CatalogLoader / CatalogDegraded*
become DiscoveryCatalog / DiscoveryCatalogLoader / DiscoveryDegraded* in
internal/cli/loader.go, the minimal stubs no longer live in internal/ir,
and schema_static_test.go's panic loader is migrated so the cli test
package compiles again.
Restore calendar helper behavior to main, finalize reviewed alias/guard decisions, cover payload and dry-run paths, and record the local migration freeze checkpoint.
克谨