Expand test coverage across server, agent, and web; fix bugs found during audit.

Adds hundreds of unit/integration/e2e tests, fixes WS bcrypt auth, config merge, fleet analytics, agent schedule/log tail, and documents stale PROBLEMS items. Updates PROBLEMS.md, README, and test scripts; ignores local spread-kits and coverage dirs.

scripts/smoke-test.ps1

@@ -1,10 +1,13 @@
 # AetherForge API smoke tests — B-01 through B-10 matrix
 param(
     [string]$BaseUrl = "http://localhost:8989",
-    [string]$Username = "drjones",
-    [string]$Password = "czapiewski"
+    [string]$Username,
+    [string]$Password
 )
 
+if (-not $Username) { $Username = if ($env:AETHERFORGE_E2E_USER) { $env:AETHERFORGE_E2E_USER } else { "testuser" } }
+if (-not $Password) { $Password = if ($env:AETHERFORGE_E2E_PASS) { $env:AETHERFORGE_E2E_PASS } else { "testpass" } }
+
 $ErrorActionPreference = "Stop"
 $passed = 0
 $failed = 0