fix(plugins): the silent-degrade doors close — a broken accelerator install can never read as absent

The auto-detection "not installed" heuristic accepted any resolution failure
whose message merely CONTAINED the package name, unterminated — so a missing
platform-binary sibling package (what a deploy replacing node_modules
mid-restart leaves behind) read as "the accelerator is not installed", and
brainy silently served the default WASM engines with zero journal lines. A
production restart storm paid 90 seconds of throttled WASM compile behind
exactly that hole. The name must now terminate where it ends (quote,
whitespace, punctuation, end) — a sibling package, an inner file path, or a
dependency failure is a broken install and init() throws, as the guard's own
law always stated.

Second door: activate() returning false (the documented graceful decline)
warned on console.warn, which `silent: true` patches away — an invisible
degrade. The decline now narrates via the always-on channel.

Also exports CanonicalCounts from the public surface (the coverage-ledger
denominator type consumers read through getCanonicalCounts()).

Pinned in tests/unit/plugin-activation-loudness.test.ts (five error shapes;
the decline warn under silent: true).

src/brainy.ts

@@ -17622,8 +17622,15 @@ export class Brainy<T = any> implements BrainyInterface<T> {
   private static isPackageNotInstalledError(error: unknown, pkg: string): boolean {
     const code = (error as { code?: string })?.code
     const message = error instanceof Error ? error.message : String(error)
-    const namesPackage =
-      message.includes(`'${pkg}'`) || message.includes(`"${pkg}"`) || message.includes(` ${pkg}`)
+    // The package name must TERMINATE where it ends: an unanchored prefix match
+    // read a missing platform-binary SIBLING package (e.g. "<pkg>-linux-x64-gnu",
+    // exactly what a deploy replacing node_modules mid-restart leaves behind) as
+    // "<pkg> is not installed" — and a present-but-broken accelerator silently
+    // degraded to the default JS engines. A production storm was hunted for a
+    // day because of that swallow. The name must be followed by a quote,
+    // whitespace, punctuation, or end-of-message — never a longer name's tail.
+    const escaped = pkg.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
+    const namesPackage = new RegExp("(^|['\"\\s])" + escaped + "(?=$|['\"\\s.,)])").test(message)
     const isResolutionFailure =
       code === 'ERR_MODULE_NOT_FOUND' ||
       code === 'MODULE_NOT_FOUND' ||

src/index.ts

@@ -389,7 +389,10 @@ import type {
   HNSWVerb,
   HNSWConfig,
   StorageAdapter,
-  DerivedFamilyDeclaration
+  DerivedFamilyDeclaration,
+  // The canonical count ledger a storage adapter maintains (counted + ALL-visibility
+  // scalars per family, the coverage-ledger denominators) — see StorageAdapter.getCanonicalCounts.
+  CanonicalCounts
 } from './coreTypes.js'
 
 // Export vector index implementation (the JS HNSW path)

src/plugin.ts

@@ -9,6 +9,7 @@
  * registered manually via `brain.use()` — there is no implicit detection.
  */
 
+import { prodLog } from './utils/logger.js'
 import type {
   StorageAdapter,
   Vector,
@@ -1574,9 +1575,13 @@ export class PluginRegistry {
         this.activated.add(name)
         activated.push(name)
       } else {
-        // Documented graceful decline (activate() → false). Surface it loudly so
-        // a silent degrade to the default engine never goes unnoticed.
-        console.warn(
+        // Documented graceful decline (activate() → false). Surface it on the
+        // ALWAYS-ON channel: `silent: true` patches console, and a declined
+        // accelerator warned into a patched console is a silent degrade to the
+        // default engines — the exact invisible-fallback class this registry
+        // exists to prevent (a production storm ran the WASM engine for 90s
+        // behind one suppressed warn).
+        prodLog.warn(
           `[brainy] Plugin "${name}" declined activation (activate() returned false); ` +
             `the default engine is in use for its providers.`
         )