Resolve Server-007..014 code-review findings

Server-007: GalaxyHierarchyProjector re-filtered the whole hierarchy per
page (O(total) paging). It now memoizes the filtered list per cache-entry +
filter signature so subsequent pages are an O(pageSize) slice.

Server-008: WatchDeployEvents re-resolved browse subtrees and rebuilt globs
per streamed event. ResolveBrowseSubtrees is hoisted out of the loop and
GalaxyGlobMatcher caches compiled Regex instances per pattern.

Server-009: auth-store connections used no busy timeout or WAL. A new
OpenConnectionAsync applies journal_mode=WAL and a busy_timeout; all auth
call sites use it. docs/Authentication.md updated.

Server-010: the dashboard rendered Rotate/Revoke for revoked keys, where
Rotate silently reactivates them. ApiKeysPage now shows actions only for
Active keys. docs/Authentication.md updated.

Server-011: WorkerAlarmRpcDispatcher converted to a primary constructor and
brought in line with module conventions.

Server-012: CLAUDE.md corrected to the canonical *:* scope strings.

Server-013 (partly re-triaged): three named coverage gaps were already
closed; the genuine gap (WorkerExecutableValidator) is now covered.

Server-014: rewrote stale "alarm path not yet wired" comments in
MxAccessGatewayService to describe the production WorkerAlarmRpcDispatcher.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/Authentication.md

@@ -107,29 +107,20 @@ The gateway keeps API key state in a dedicated SQLite database. SQLite is suffic
 
 ### Connection factory
 
-`AuthSqliteConnectionFactory` reads `GatewayOptions.Authentication.SqlitePath`, ensures the parent directory exists, and opens the connection in `ReadWriteCreate` mode so first-run installations can create the file without manual provisioning:
+`AuthSqliteConnectionFactory` reads `GatewayOptions.Authentication.SqlitePath`, ensures the parent directory exists, and builds a connection string in `ReadWriteCreate` mode so first-run installations can create the file without manual provisioning. Connection pooling is enabled and the connection string carries a non-zero `DefaultTimeout`:
 
 ```csharp
-public SqliteConnection CreateConnection()
+SqliteConnectionStringBuilder builder = new()
 {
-    string sqlitePath = options.Value.Authentication.SqlitePath;
-    string? directory = Path.GetDirectoryName(sqlitePath);
-
-    if (!string.IsNullOrWhiteSpace(directory))
-    {
-        Directory.CreateDirectory(directory);
-    }
-
-    SqliteConnectionStringBuilder builder = new()
-    {
-        DataSource = sqlitePath,
-        Mode = SqliteOpenMode.ReadWriteCreate
-    };
-
-    return new SqliteConnection(builder.ToString());
-}
+    DataSource = sqlitePath,
+    Mode = SqliteOpenMode.ReadWriteCreate,
+    Pooling = true,
+    DefaultTimeout = (int)BusyTimeout.TotalSeconds,
+};
 ```
 
+Every store opens its connection through `OpenConnectionAsync`, which opens the connection and then applies `PRAGMA journal_mode=WAL` and `PRAGMA busy_timeout`. WAL is a persistent database-level setting so re-applying it per connection is a cheap no-op; `busy_timeout` is per-connection state. Because `MarkKeyUsedAsync` runs on every authenticated request and `SqliteApiKeyAuditStore` appends on every denial, this lets concurrent readers and writers retry briefly instead of surfacing `SQLITE_BUSY` as a hard failure on the request path.
+
 ### Schema
 
 `SqliteAuthSchema` declares table names and the current schema version as constants. Three tables are involved:
@@ -166,6 +157,8 @@ public static ApiKeyRecord Read(SqliteDataReader reader)
 
 `SqliteApiKeyAdminStore` (`IApiKeyAdminStore`) implements administrative mutations: `CreateAsync` accepts an `ApiKeyCreateRequest`, `RevokeAsync` sets `revoked_utc` only when not already revoked, and `RotateAsync` replaces `secret_hash`, clears `last_used_utc`, and clears `revoked_utc` so a rotated key is immediately usable.
 
+Because `RotateAsync` clears `revoked_utc`, rotating a previously revoked key reactivates it. The dashboard API Keys page therefore offers the Rotate (and Revoke) action only for keys whose status is `Active`; a revoked key shows no actions, so an operator cannot un-revoke a deliberately disabled key as a side effect of a rotation.
+
 ### Audit trail
 
 `SqliteApiKeyAuditStore` (`IApiKeyAuditStore`) appends `ApiKeyAuditEntry` values to the `api_key_audit` table and stamps each row with a UTC timestamp inside the store rather than trusting the caller. `ListRecentAsync` returns the most recent rows ordered by `audit_id` descending and projects them into `ApiKeyAuditRecord`. Rows are kept even after the referenced key is revoked because the audit history is the durable record of administrative action; the `key_id` column is nullable to accommodate non-key-scoped events such as `init-db`.