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>

admin-v2/ai-compliance-sdk/internal/api/router.go

@@ -0,0 +1,96 @@
+package api
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+// Response represents a standard API response
+type Response struct {
+	Success bool        `json:"success"`
+	Data    interface{} `json:"data,omitempty"`
+	Error   string      `json:"error,omitempty"`
+	Code    string      `json:"code,omitempty"`
+}
+
+// SuccessResponse creates a success response
+func SuccessResponse(c *gin.Context, data interface{}) {
+	c.JSON(http.StatusOK, Response{
+		Success: true,
+		Data:    data,
+	})
+}
+
+// ErrorResponse creates an error response
+func ErrorResponse(c *gin.Context, status int, err string, code string) {
+	c.JSON(status, Response{
+		Success: false,
+		Error:   err,
+		Code:    code,
+	})
+}
+
+// StateData represents state response data
+type StateData struct {
+	TenantID     string      `json:"tenantId"`
+	State        interface{} `json:"state"`
+	Version      int         `json:"version"`
+	LastModified string      `json:"lastModified"`
+}
+
+// ValidationError represents a validation error
+type ValidationError struct {
+	RuleID   string `json:"ruleId"`
+	Field    string `json:"field"`
+	Message  string `json:"message"`
+	Severity string `json:"severity"`
+}
+
+// CheckpointResult represents checkpoint validation result
+type CheckpointResult struct {
+	CheckpointID string            `json:"checkpointId"`
+	Passed       bool              `json:"passed"`
+	ValidatedAt  string            `json:"validatedAt"`
+	ValidatedBy  string            `json:"validatedBy"`
+	Errors       []ValidationError `json:"errors"`
+	Warnings     []ValidationError `json:"warnings"`
+}
+
+// SearchResult represents a RAG search result
+type SearchResult struct {
+	ID         string            `json:"id"`
+	Content    string            `json:"content"`
+	Source     string            `json:"source"`
+	Score      float64           `json:"score"`
+	Metadata   map[string]string `json:"metadata,omitempty"`
+	Highlights []string          `json:"highlights,omitempty"`
+}
+
+// GenerateRequest represents a document generation request
+type GenerateRequest struct {
+	TenantID    string                 `json:"tenantId" binding:"required"`
+	Context     map[string]interface{} `json:"context"`
+	Template    string                 `json:"template,omitempty"`
+	Language    string                 `json:"language,omitempty"`
+	UseRAG      bool                   `json:"useRag"`
+	RAGQuery    string                 `json:"ragQuery,omitempty"`
+	MaxTokens   int                    `json:"maxTokens,omitempty"`
+	Temperature float64                `json:"temperature,omitempty"`
+}
+
+// GenerateResponse represents a document generation response
+type GenerateResponse struct {
+	Content      string         `json:"content"`
+	GeneratedAt  string         `json:"generatedAt"`
+	Model        string         `json:"model"`
+	TokensUsed   int            `json:"tokensUsed"`
+	RAGSources   []SearchResult `json:"ragSources,omitempty"`
+	Confidence   float64        `json:"confidence,omitempty"`
+}
+
+// Timestamps helper
+func now() string {
+	return time.Now().UTC().Format(time.RFC3339)
+}