feat(namespace): NO SPECIAL NAMES + storage fidelity — the ruled completion of the field-addressing law

The write side of the law, ruled 2026-08-03: data is either in main space
where developers can use anything, or it is in system.*.

- The reserved-name write door DIES: add/update/relate/updateRelation
  metadata bags accept EVERY name (confidence, type, id, data, level,
  content, ...) as ordinary user fields — indexed, filterable, sortable,
  aggregatable, identical to any other field. The remap/enforce/warn
  machinery, the reservedFieldPolicy config (now a typed init refusal),
  and the compile-time metadata key bans are all removed. The one write
  refusal left: keys spelled 'system.*' (namespace forgery), now enforced
  on all four write doors.
- STORED RECORDS GO NESTED (v2): engine fields top-level, the user bag
  nested verbatim under 'metadata', sealed by a format stamp — by-name
  storage discrimination is unsound once colliders are admitted. Legacy
  flat records stay readable forever through the shape-aware splitters
  (sound for them: the old door refused colliders). Time travel rides the
  same split (generation store snapshots whole records).
- Name-based index exclusions DIE: user frame indexes every name; the
  excludeFields/indexedFields knobs and their silent-[] holes are gone;
  bulk-payload protection is value-shape only, uniform across names.
- Consumer-sweep findings fixed in the same wave: per-type counts read
  the frozen 'system.type' column (addToIndex sort, affinity tracking,
  cold-count rehydration, VFS type bitmaps — legacy 'noun' fallback for
  pre-rebuild reads); resolveHiddenIds addresses 'system.visibility'
  (bare 'visibility' was a silent no-op under the law — VFS/system
  entities leaked into default reads).
- Fidelity fallout fixed in the owning layers: readEntityFieldAddress
  reads the bag first (colliders were absent-shadowed by its own guard)
  and never serves system addresses from the bag; blob history refs read
  the bag shape-aware; migration transforms now receive ONE normalized
  view (engine fields + nested bag) regardless of stored era, and stray
  flat-habit keys refuse with the fix in the message.
- THE REOPEN-COLLIDER CONFORMANCE CASE (required before any RC counts as
  gates-green): all ten collider names + plumbing names written as user
  fields, verified verbatim + queryable across live reads, flush+reopen,
  a forced epoch rebuild, and asOf time travel; relation mirror; forgery
  refusals; legacy flat-record compat. 8/8 green.

Gates: unit 1901/1901 (exit 0) · integration 758 (exit 0) · conformance
27/27 (exit 0) · consumer test sweep migrated (10 files).

tests/unit/test-suite-coverage-guard.test.ts

@@ -30,6 +30,9 @@ function allTestFiles(dir: string, out: string[] = []): string[] {
  * conscious decision — a NEW orphan not listed here fails the guard below.
  */
 const MANUAL_ONLY = new Set<string>([
+  // Conformance suites run as an explicit gate stage (both engines run them
+  // by direct invocation), never swept into the unit/integration configs.
+  'tests/conformance/collider-fidelity.test.ts',
   'tests/api/performance-benchmarks.test.ts',
   'tests/critical-neural-validation.test.ts',
   'tests/critical-performance-benchmark.test.ts',
@@ -38,7 +41,15 @@ const MANUAL_ONLY = new Set<string>([
   'tests/package-size-limit.test.ts',
   'tests/performance/graph-scale-performance.test.ts',
   'tests/performance/triple-intelligence-scale.test.ts',
-  'tests/performance/typeAware.bench.test.ts'
+  'tests/performance/typeAware.bench.test.ts',
+  // Cross-engine field-addressing conformance suite: pinned bit-for-bit against
+  // the native accelerator's implementation of the SAME contract, and invoked
+  // directly (`npx vitest run tests/conformance/namespace-law.test.ts`), never
+  // swept into the unit/integration gates — a run against a branch where the
+  // resolver hasn't landed yet must SKIP loudly (see the file's own SELF-SKIP
+  // doc), not silently pass/fail as a side effect of which gate happened to
+  // pick it up.
+  'tests/conformance/namespace-law.test.ts'
 ])
 
 function inGate(rel: string): boolean {