fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vault/agent/config.hcl

@@ -0,0 +1,44 @@
+# Vault Agent Configuration for BreakPilot SSL Certificates
+# Automatically renews certificates and updates nginx
+
+pid_file = "/tmp/vault-agent.pid"
+
+vault {
+  address = "http://vault:8200"
+  retry {
+    num_retries = 5
+  }
+}
+
+auto_auth {
+  method "approle" {
+    mount_path = "auth/approle"
+    config = {
+      role_id_file_path   = "/vault/agent/data/role-id"
+      secret_id_file_path = "/vault/agent/data/secret-id"
+      remove_secret_id_file_after_reading = false
+    }
+  }
+
+  sink "file" {
+    config = {
+      path = "/vault/agent/data/token"
+      mode = 0600
+    }
+  }
+}
+
+# Single template that generates all certificate components
+# Uses a single pkiCert call to ensure cert/key match
+template {
+  source      = "/vault/agent/templates/all.tpl"
+  destination = "/vault/certs/combined.pem"
+  perms       = 0600
+  command     = "sh /vault/agent/split-certs.sh"
+}
+
+# Listener for debugging (optional)
+listener "tcp" {
+  address     = "127.0.0.1:8100"
+  tls_disable = true
+}