Reduce init-time memory for the busybox binary by eliminating unnecessary
imports, deferring allocations with sync.OnceValue, and breaking heavy
transitive dependency chains.

Results (Linux amd64):
- Busybox: 16.1 MB -> 12.9 MB heap (-20%), 245K -> 173K mallocs (-29%)
- AC standalone: 9.1 MB -> 7.2 MB heap (-21%), 87K -> 51K mallocs (-41%)
- Binary size: 205 MB -> 194 MB (-5%)

Generated with assistance from AI

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Test files still accessed schema variables and regex variables directly
instead of calling the lazy wrapper functions:
- schema.XxxSchema.OptionsMap → schema.XxxSchema().OptionsMap (16 files)
- deploymentBaseSchema = schema.DeploymentsSchema → schema.DeploymentsSchema()
- comparatorDecimalValueRegex → comparatorDecimalValueRegex() (validate_test.go)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

The schema.go.tpl template was updated to use sync.OnceValue but the
test schemas in migrator/migrations/postgreshelper/schema/ and
pkg/postgres/schema/test_*.go were not regenerated. CI's
check-generated-files step regenerates them, producing a mismatch.

Run: make go-generated-srcs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

With sync.OnceValue schemas, registration happens on first access.
Tests that explicitly call RegisterCategoryToTable or RegisterTable
after accessing a schema would cause fatal duplicate registration.
Make both functions idempotent — silently ignore re-registration
of the same table.

Also fix select_field_test.go which incorrectly added () to
TestStructsSchema (a test schema not converted to sync.OnceValue).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

StackRox lint rules require "github.com/stackrox/rox/pkg/sync" instead
of stdlib "sync". Add OnceValue wrapper to pkg/sync/common_aliases.go
and update the schema template to use it. Regenerated all schema files.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

With sync.OnceValue, schema construction is lazy — but ApplyAllSchemas
needs table create statements in registeredTables at startup to create
database tables. Split registration into two phases:

1. init(): RegisterTableStmt registers table name + create statement
   (cheap, no walker.Walk)
2. Lazy: RegisterTable updates with the full walker.Schema on first
   schema function access

Also fixes:
- goimports formatting on pkg/branding, pkg/cloudproviders/aws
- Remove unused //nolint:wrapcheck directive
- Regenerate all schema files with init() registration

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

- Remove tools/measure-busybox-mem/ (unrelated to this PR, measures
  import chain costs not sync.OnceValue improvement)
- Fix schema.go.tpl import ordering: move pkg/sync to third-party
  group (was incorrectly mixed with stdlib imports)
- Regenerate all schema files with corrected import ordering

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Keep only schema lazy loading (sync.OnceValue) changes in this PR:
- Template changes (schema.go.tpl, singleton.go.tpl, store.go.tpl)
- Schema infrastructure (all.go, mapping.go, common_aliases.go)
- Generated schema files
- Mechanical caller updates (Schema.Field → Schema().Field)

Moved to separate PR:
- pkg/booleanpolicy lazy regexp/factory
- pkg/branding lazy logo
- pkg/cloudproviders/aws lazy certs
- pkg/probeupload lazy regex
- pkg/printers/table sub-package move
- pkg/postgres/id inline utilities
- sensor/kubernetes/fake build tags
- sensor/common/centralproxy testutils rename

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>