diff --git a/.claude/AGENTS.go.md b/.claude/AGENTS.go.md
new file mode 100644
index 0000000..169d6dc
--- /dev/null
+++ b/.claude/AGENTS.go.md
@@ -0,0 +1,227 @@
+# AGENTS.go.md — Go Agent Rules
+
+Applies to: `ai-compliance-sdk/` (Go/Gin service)
+
+---
+
+## NON-NEGOTIABLE: Pre-Push Checklist
+
+**BEFORE every `git push`, run ALL of the following from the module root. A single failure blocks the push.**
+
+```bash
+# 1. Format (gofmt is non-negotiable — unformatted code fails CI)
+gofmt -l . | grep -q . && echo "FORMATTING ERRORS — run: gofmt -w ." && exit 1 || true
+
+# 2. Vet (catches suspicious code that compiles but is likely wrong)
+go vet ./...
+
+# 3. Lint (golangci-lint aggregates 50+ linters — the de-facto standard)
+golangci-lint run --timeout=5m ./...
+
+# 4. Tests with race detector
+go test -race -count=1 ./...
+
+# 5. Build verification (catches import errors, missing implementations)
+go build ./...
+```
+
+**One-liner pre-push gate:**
+```bash
+gofmt -l . | grep -q . && exit 1; go vet ./... && golangci-lint run --timeout=5m && go test -race -count=1 ./... && go build ./...
+```
+
+### Why each check matters
+
+| Check | Catches | Time |
+|-------|---------|------|
+| `gofmt` | Formatting violations (CI rejects unformatted code) | <1s |
+| `go vet` | Printf format mismatches, unreachable code, shadowed vars | <5s |
+| `golangci-lint` | 50+ static analysis checks (errcheck, staticcheck, etc.) | 10-30s |
+| `go test -race` | Race conditions (invisible without this flag) | 10-60s |
+| `go build` | Import errors, interface mismatches | <5s |
+
+---
+
+## golangci-lint Configuration
+
+Config lives in `.golangci.yml` at the repo root. Minimum required linters:
+
+```yaml
+linters:
+  enable:
+    - errcheck       # unchecked errors are bugs
+    - gosimple       # code simplification
+    - govet          # go vet findings
+    - ineffassign    # useless assignments
+    - staticcheck    # advanced static analysis (SA*, S*, QF*)
+    - unused         # unused code
+    - gofmt          # formatting
+    - goimports      # import organization
+    - gocritic       # opinionated style checks
+    - noctx          # HTTP requests without context
+    - bodyclose      # unclosed HTTP response bodies
+    - exhaustive     # exhaustive switch on enums
+    - wrapcheck      # errors from external packages must be wrapped
+
+linters-settings:
+  errcheck:
+    check-blank: true    # blank identifier for errors is a bug
+  govet:
+    enable-all: true
+
+issues:
+  max-issues-per-linter: 0
+  max-same-issues: 0
+```
+
+**Never suppress with `//nolint:` without a comment explaining why it's safe.**
+
+---
+
+## Code Structure (Hexagonal Architecture)
+
+```
+ai-compliance-sdk/
+├── cmd/
+│   └── server/main.go        # thin: parse flags, wire deps, call app.Run()
+├── internal/
+│   ├── app/                  # dependency wiring
+│   ├── domain/               # pure business logic, no framework deps
+│   ├── ports/                # interfaces (repositories, external services)
+│   ├── adapters/
+│   │   ├── http/             # Gin handlers (≤30 LOC per handler)
+│   │   ├── postgres/         # DB adapters implementing ports
+│   │   └── external/         # third-party API clients
+│   └── services/             # orchestration between domain + ports
+└── pkg/                      # exported, reusable packages
+```
+
+**Handler constraint — max 30 lines per handler:**
+```go
+func (h *RiskHandler) GetRisk(c *gin.Context) {
+    id, err := uuid.Parse(c.Param("id"))
+    if err != nil {
+        c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
+        return
+    }
+    risk, err := h.service.Get(c.Request.Context(), id)
+    if err != nil {
+        h.handleError(c, err)
+        return
+    }
+    c.JSON(http.StatusOK, risk)
+}
+```
+
+---
+
+## Error Handling
+
+```go
+// REQUIRED: wrap errors with context
+if err != nil {
+    return fmt.Errorf("get risk %s: %w", id, err)
+}
+
+// REQUIRED: define sentinel errors in domain package
+var ErrNotFound = errors.New("not found")
+var ErrUnauthorized = errors.New("unauthorized")
+
+// REQUIRED: check errors — never use _ for error returns
+result, err := service.Do(ctx, input)
+if err != nil {
+    // handle it
+}
+```
+
+**`errcheck` linter enforces this — zero tolerance for unchecked errors.**
+
+---
+
+## Testing Requirements
+
+```
+internal/
+├── domain/
+│   ├── risk.go
+│   └── risk_test.go          # unit: pure functions, no I/O
+├── adapters/
+│   ├── http/
+│   │   ├── handler.go
+│   │   └── handler_test.go   # httptest-based, mock service
+│   └── postgres/
+│       ├── repo.go
+│       └── repo_test.go      # integration: testcontainers or real DB
+```
+
+**Test naming convention:**
+```go
+func TestRiskService_Get_ReturnsRisk(t *testing.T) {}
+func TestRiskService_Get_NotFound_ReturnsError(t *testing.T) {}
+func TestRiskService_Get_DBError_WrapsError(t *testing.T) {}
+```
+
+**Table-driven tests are mandatory for functions with multiple cases:**
+```go
+func TestValidateInput(t *testing.T) {
+    tests := []struct {
+        name    string
+        input   string
+        wantErr bool
+    }{
+        {"valid", "ok", false},
+        {"empty", "", true},
+        {"too long", strings.Repeat("x", 300), true},
+    }
+    for _, tt := range tests {
+        t.Run(tt.name, func(t *testing.T) {
+            err := validateInput(tt.input)
+            if (err != nil) != tt.wantErr {
+                t.Errorf("got err=%v, wantErr=%v", err, tt.wantErr)
+            }
+        })
+    }
+}
+```
+
+```bash
+# Pre-push: unit tests only (fast)
+go test -race -count=1 -run "^TestUnit" ./...
+
+# CI: all tests
+go test -race -count=1 -coverprofile=coverage.out ./...
+go tool cover -func=coverage.out | grep total
+```
+
+---
+
+## Context Propagation
+
+Every function that does I/O (DB, HTTP, file) **must** accept and pass `context.Context` as the first argument:
+
+```go
+// REQUIRED
+func (r *RiskRepo) Get(ctx context.Context, id uuid.UUID) (*Risk, error) {
+    return r.db.QueryRowContext(ctx, query, id).Scan(...)
+}
+
+// FORBIDDEN — no context
+func (r *RiskRepo) Get(id uuid.UUID) (*Risk, error) { ... }
+```
+
+`noctx` linter enforces HTTP client context. Manual review required for DB calls.
+
+---
+
+## Common Pitfalls That Break CI
+
+| Pitfall | Prevention |
+|---------|------------|
+| Unformatted code | `gofmt -w .` before commit |
+| Unchecked error return from `rows.Close()` / `resp.Body.Close()` | `errcheck` + `bodyclose` linters |
+| Goroutine leak (goroutine started but never stopped) | `-race` test flag |
+| Shadowed `err` variable in nested scope | `govet -shadow` |
+| HTTP response body not closed | `bodyclose` linter |
+| `interface{}` instead of `any` (Go 1.18+) | `gocritic` |
+| Missing context on DB/HTTP calls | `noctx` linter |
+| Returning concrete type from constructor instead of interface | breaks testability |
diff --git a/.claude/AGENTS.python.md b/.claude/AGENTS.python.md
new file mode 100644
index 0000000..71a8525
--- /dev/null
+++ b/.claude/AGENTS.python.md
@@ -0,0 +1,157 @@
+# AGENTS.python.md — Python Agent Rules
+
+Applies to: `backend-compliance/`, `ai-compliance-sdk/` (Python path), `compliance-tts-service/`, `document-crawler/`, `dsms-gateway/` (Python services)
+
+---
+
+## NON-NEGOTIABLE: Pre-Push Checklist
+
+**BEFORE every `git push`, run ALL of the following from the service directory. A single failure blocks the push.**
+
+```bash
+# 1. Fast lint (Ruff — catches syntax errors, unused imports, style violations)
+ruff check .
+
+# 2. Auto-fix safe issues, then re-check
+ruff check --fix . && ruff check .
+
+# 3. Type checking (mypy strict on new modules, standard on legacy)
+mypy . --ignore-missing-imports --no-error-summary
+
+# 4. Unit tests only (fast, no external deps)
+pytest tests/unit/ -x -q --no-header
+
+# 5. Verify the service starts (catches import errors, missing env vars with defaults)
+python -c "import app" 2>/dev/null || python -c "import main" 2>/dev/null || true
+```
+
+**One-liner pre-push gate (run from service root):**
+```bash
+ruff check . && mypy . --ignore-missing-imports --no-error-summary && pytest tests/ -x -q --no-header
+```
+
+### Why each check matters
+
+| Check | Catches | Time |
+|-------|---------|------|
+| `ruff check` | Syntax errors, unused imports, undefined names | <2s |
+| `mypy` | Type mismatches, wrong argument types | 5-15s |
+| `pytest -x` | Logic errors, regressions | 10-60s |
+| import check | Missing packages, circular imports | <1s |
+
+---
+
+## Code Style (Ruff)
+
+Config lives in `pyproject.toml`. Do **not** add per-file `# noqa` suppressions without a comment explaining why.
+
+```toml
+[tool.ruff]
+line-length = 100
+target-version = "py311"
+
+[tool.ruff.lint]
+select = ["E", "F", "W", "I", "N", "UP", "B", "C4", "SIM", "TCH"]
+ignore = ["E501"]  # line length handled by formatter
+
+[tool.ruff.lint.per-file-ignores]
+"tests/*" = ["S101"]  # assert is fine in tests
+```
+
+**Blocked patterns:**
+- `from module import *` — always name imports explicitly
+- Bare `except:` — use `except Exception as e:` at minimum
+- `print()` in production code — use `logger`
+- Mutable default arguments: `def f(x=[])` → `def f(x=None)`
+
+---
+
+## Type Annotations
+
+All new functions **must** have complete type annotations. Use `from __future__ import annotations` for forward references.
+
+```python
+# Required
+async def get_tenant(tenant_id: str, db: AsyncSession) -> TenantModel | None:
+    ...
+
+# Required for complex types
+from typing import Sequence
+def list_risks(filters: dict[str, str]) -> Sequence[RiskModel]:
+    ...
+```
+
+**Mypy rules:**
+- `--disallow-untyped-defs` on new files
+- `--strict` on new modules (not legacy)
+- Never use `type: ignore` without a comment
+
+---
+
+## FastAPI-Specific Rules
+
+```python
+# Handlers stay thin — delegate to service layer
+@router.get("/risks/{risk_id}", response_model=RiskResponse)
+async def get_risk(risk_id: UUID, service: RiskService = Depends(get_risk_service)):
+    return await service.get(risk_id)   # ≤5 lines per handler
+
+# Always use response_model — never return raw dicts from endpoints
+# Always validate input with Pydantic — no manual dict parsing
+# Use HTTPException with specific status codes, never bare 500
+```
+
+---
+
+## Testing Requirements
+
+```
+tests/
+├── unit/          # Pure logic tests, no DB/HTTP (run on every push)
+├── integration/   # Requires running services (run in CI only)
+└── contracts/     # OpenAPI snapshot tests (run on API changes)
+```
+
+**Unit test requirements:**
+- Every new function → at least one happy-path test
+- Every bug fix → regression test that would have caught it
+- Mock all I/O: DB calls, HTTP calls, filesystem reads
+
+```bash
+# Run unit tests only (fast, for pre-push)
+pytest tests/unit/ -x -q
+
+# Run with coverage (for CI)
+pytest tests/ --cov=. --cov-report=term-missing --cov-fail-under=70
+```
+
+---
+
+## Dependency Management
+
+```bash
+# Check new package license before adding
+pip show <package> | grep -E "License|Home-page"
+
+# After adding to requirements.txt — verify no GPL/AGPL
+pip-licenses --fail-on="GPL;AGPL" 2>/dev/null || echo "Check licenses manually"
+```
+
+**Never add:**
+- GPL/AGPL licensed packages
+- Packages with known CVEs (`pip audit`)
+- Packages that only exist for dev (`pytest`, `ruff`) to production requirements
+
+---
+
+## Common Pitfalls That Break CI
+
+| Pitfall | Prevention |
+|---------|------------|
+| `const x = ...` inside dict literal (wrong language!) | Run ruff before push |
+| Pydantic v1 syntax in v2 project | Use `model_config`, not `class Config` |
+| Sync function called inside async without `run_in_executor` | mypy + async linter |
+| Missing `await` on coroutine | mypy catches this |
+| `datetime.utcnow()` (deprecated) | Use `datetime.now(timezone.utc)` |
+| Bare `except:` swallowing errors silently | ruff B001/E722 catches this |
+| Unused imports left in committed code | ruff F401 catches this |
diff --git a/.claude/AGENTS.typescript.md b/.claude/AGENTS.typescript.md
new file mode 100644
index 0000000..ade31b1
--- /dev/null
+++ b/.claude/AGENTS.typescript.md
@@ -0,0 +1,186 @@
+# AGENTS.typescript.md — TypeScript/Next.js Agent Rules
+
+Applies to: `pitch-deck/`, `admin-v2/` (Next.js apps in this repo)
+
+---
+
+## NON-NEGOTIABLE: Pre-Push Checklist
+
+**BEFORE every `git push`, run ALL of the following from the Next.js app directory. A single failure blocks the push.**
+
+```bash
+# 1. Type check (catches the class of bug that broke ChatFAB.tsx — const inside object)
+npx tsc --noEmit
+
+# 2. Lint (ESLint with TypeScript-aware rules)
+npm run lint
+
+# 3. Production build (THE most important check — passes lint/types but still fails build)
+npm run build
+```
+
+**One-liner pre-push gate:**
+```bash
+npx tsc --noEmit && npm run lint && npm run build
+```
+
+> **Why `npm run build` is mandatory:** Next.js performs additional checks during build (server component boundaries, missing env vars referenced in code, RSC/client component violations) that `tsc` and ESLint alone do not catch. The ChatFAB syntax error (`const` inside object literal) is exactly the kind of error caught only by build.
+
+### Why each check matters
+
+| Check | Catches | Time |
+|-------|---------|------|
+| `tsc --noEmit` | Type errors, wrong prop types, missing members | 5-20s |
+| `eslint` | React hooks rules, import order, unused vars | 5-15s |
+| `next build` | Server/client boundary violations, missing deps, syntax errors in JSX, env var issues | 30-120s |
+
+---
+
+## TypeScript Configuration
+
+`tsconfig.json` must have strict mode enabled:
+
+```json
+{
+  "compilerOptions": {
+    "strict": true,
+    "noImplicitAny": true,
+    "strictNullChecks": true,
+    "noUncheckedIndexedAccess": true,
+    "exactOptionalPropertyTypes": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true
+  }
+}
+```
+
+**Never use `// @ts-ignore` or `// @ts-expect-error` without a comment explaining why it's unavoidable.**
+
+---
+
+## ESLint Configuration
+
+```json
+{
+  "extends": [
+    "next/core-web-vitals",
+    "plugin:@typescript-eslint/recommended-type-checked"
+  ],
+  "rules": {
+    "@typescript-eslint/no-explicit-any": "error",
+    "@typescript-eslint/no-unused-vars": "error",
+    "@typescript-eslint/no-floating-promises": "error",
+    "@typescript-eslint/await-thenable": "error",
+    "react-hooks/exhaustive-deps": "error",
+    "no-console": "warn"
+  }
+}
+```
+
+**`@typescript-eslint/no-floating-promises`** — catches `await`-less async calls that silently swallow errors.
+**`react-hooks/exhaustive-deps`** — catches missing deps in `useEffect`/`useCallback` (source of stale closure bugs).
+
+---
+
+## Next.js 15 Rules (App Router)
+
+### Server vs Client boundary
+
+```typescript
+// Server Component (default) — no 'use client' needed
+// Can: fetch data, access DB, read env vars, import server-only packages
+async function Page() {
+  const data = await fetchData()  // direct async/await
+  return <ClientComponent data={data} />
+}
+
+// Client Component — must have 'use client' at top
+'use client'
+// Can: use hooks, handle events, access browser APIs
+// Cannot: import server-only packages (nodemailer, fs, db pool)
+```
+
+**Common violation:** Importing `lib/email.ts` (which imports nodemailer) from a client component → use `lib/email-templates.ts` instead.
+
+### Route Handler typing
+
+```typescript
+// Always type request and use NextResponse
+export async function GET(request: Request): Promise<NextResponse> {
+  const { searchParams } = new URL(request.url)
+  return NextResponse.json({ data })
+}
+```
+
+### Environment variables
+
+```typescript
+// Server-only env vars: access directly
+const secret = process.env.PITCH_ADMIN_SECRET  // fine in server components
+
+// Client env vars: must be prefixed NEXT_PUBLIC_
+const url = process.env.NEXT_PUBLIC_API_URL  // accessible in browser
+
+// Never access server-only env vars in 'use client' components
+```
+
+---
+
+## Component Architecture
+
+```
+app/
+├── (route-group)/
+│   ├── page.tsx           # Server Component — data fetching
+│   └── _components/       # Colocated components for this route
+│       ├── ClientThing.tsx  # 'use client' when needed
+│       └── ServerThing.tsx  # Server by default
+components/
+│   └── ui/               # Shared presentational components
+lib/
+│   ├── server-only-module.ts  # import 'server-only' at top
+│   └── shared-module.ts       # safe for both server and client
+```
+
+**Rules:**
+- Push `'use client'` boundary as deep as possible (toward leaves)
+- Never import server-only modules from client components
+- Colocate `_components/` and `_hooks/` per route when they're route-specific
+
+---
+
+## Testing Requirements
+
+```bash
+# Type check (fastest, run first)
+npx tsc --noEmit
+
+# Unit tests (Vitest)
+npx vitest run
+
+# E2E tests (Playwright — CI only, requires running server)
+npx playwright test
+```
+
+**Test every:**
+- Custom hook (`usePresenterMode`, `useSlideNavigation`)
+- Utility function (`lib/auth.ts` helpers, `lib/email-templates.ts`)
+- API route handler (mock DB, assert response shape)
+
+---
+
+## Common Pitfalls That Break CI
+
+| Pitfall | Prevention |
+|---------|------------|
+| `const x = ...` inside object literal | `tsc --noEmit` + `npm run build` |
+| Server-only import in client component | `import 'server-only'` guard + ESLint |
+| Missing `await` on async function call | `@typescript-eslint/no-floating-promises` |
+| `useEffect` with missing dependency | `react-hooks/exhaustive-deps` error |
+| `any` type hiding type errors | `@typescript-eslint/no-explicit-any` error |
+| Unused variable left after refactor | `noUnusedLocals` in tsconfig |
+| `process.env.SECRET` in client component | Next.js build error |
+| Forgetting `export default` on page component | Next.js build error |
+| Calling server action from server component | must use route handler instead |
+| `jose` full import in Edge Runtime | Use specific subpath: `jose/jwt/verify` |
diff --git a/.claude/CLAUDE.md b/.claude/CLAUDE.md
index 16d8886..b66a21c 100644
--- a/.claude/CLAUDE.md
+++ b/.claude/CLAUDE.md
@@ -287,6 +287,37 @@ git push origin main && git push gitea main
 
 ---
 
+## Pre-Push Checks (PFLICHT — VOR JEDEM PUSH)
+
+> Full detail: `.claude/rules/pre-push-checks.md` | Stack rules: `AGENTS.python.md`, `AGENTS.go.md`, `AGENTS.typescript.md`
+
+**NIEMALS pushen ohne diese Checks. CI-Failures blockieren das gesamte Deploy.**
+
+### Python (backend-core, rag-service, embedding-service, control-pipeline)
+
+```bash
+cd <service-dir>
+ruff check . && mypy . --ignore-missing-imports --no-error-summary && pytest tests/ -x -q --no-header
+```
+
+### Go (consent-service, billing-service)
+
+```bash
+cd <service-dir>
+gofmt -l . | grep -q . && exit 1; go vet ./... && golangci-lint run --timeout=5m && go test -race ./... && go build ./...
+```
+
+### TypeScript/Next.js (pitch-deck, admin-v2)
+
+```bash
+cd pitch-deck   # or admin-v2
+npx tsc --noEmit && npm run lint && npm run build
+```
+
+> `npm run build` ist PFLICHT — `tsc` allein reicht nicht. Syntax-Fehler wie `const` inside object literal werden nur vom Build gefangen.
+
+---
+
 ## Kernprinzipien
 
 ### 1. Open Source Policy
diff --git a/.claude/rules/pre-push-checks.md b/.claude/rules/pre-push-checks.md
new file mode 100644
index 0000000..7c39592
--- /dev/null
+++ b/.claude/rules/pre-push-checks.md
@@ -0,0 +1,74 @@
+# Pre-Push Checks (MANDATORY)
+
+## Rule
+
+**NEVER push to any remote without first running and confirming ALL checks pass for every changed language stack.**
+
+This rule exists because CI failures break the deploy pipeline for everyone and waste ~5 minutes per failed build. A 60-second local check prevents that.
+
+---
+
+## Quick Reference by Stack
+
+### Python (backend-compliance, ai-compliance-sdk, compliance-tts-service)
+
+```bash
+cd <service-dir>
+ruff check . && mypy . --ignore-missing-imports --no-error-summary && pytest tests/ -x -q --no-header
+```
+
+Blocks on: syntax errors, type errors, failing tests.
+
+### Go (ai-compliance-sdk Go path)
+
+```bash
+cd <service-dir>
+gofmt -l . | grep -q . && exit 1; go vet ./... && golangci-lint run --timeout=5m && go test -race ./... && go build ./...
+```
+
+Blocks on: formatting, vet findings, lint violations, test failures, build errors.
+
+### TypeScript/Next.js (admin-compliance, developer-portal)
+
+```bash
+cd <nextjs-app-dir>
+npx tsc --noEmit && npm run lint && npm run build
+```
+
+Blocks on: type errors, lint violations, **build failures**.
+
+> `npm run build` is mandatory — `tsc` passes but `next build` fails more often than you'd expect (server/client boundary violations, env var issues, JSX syntax errors).
+
+---
+
+## What Claude Must Do Before Every Push
+
+1. Identify which services/apps were changed in this task
+2. Run the appropriate gate command(s) from the table above
+3. If any check fails: fix it, re-run, confirm green
+4. Only then run `git push origin main`
+
+**No exceptions.** A push that skips pre-push checks and breaks CI is worse than a delayed push.
+
+---
+
+## CI vs Local Checks
+
+| Stage | Where | What |
+|-------|-------|------|
+| Pre-push (local) | Claude runs | Lint + type check + unit tests + build |
+| CI (Gitea Actions) | Automatic on push | Same + integration tests + contract tests |
+| Deploy (Coolify) | Automatic after CI | Docker build + health check |
+
+Local checks catch 90% of CI failures in seconds. CI is the safety net, not the first line of defense.
+
+---
+
+## Failures That Were Caused by Skipping Pre-Push Checks
+
+- `ChatFAB.tsx`: `const textLang` inside fetch object literal — caught by `tsc --noEmit` and `npm run build`
+- `nodemailer` webpack error: server-only import in client component — caught by `npm run build`
+- `jose` Edge Runtime error: full package import — caught by `npm run build`
+- `main.py` `<en>` tags spoken: missing `import re` — caught by `python -c "import main"`
+
+These all caused a broken deploy. Each would have been caught in <60 seconds locally.
diff --git a/pitch-deck/components/ChatFAB.tsx b/pitch-deck/components/ChatFAB.tsx
index 7e844b8..c2a6328 100644
--- a/pitch-deck/components/ChatFAB.tsx
+++ b/pitch-deck/components/ChatFAB.tsx
@@ -154,12 +154,10 @@ export default function ChatFAB({
     ttsAbortRef.current = controller
 
     try {
+      const textLang = /[äöüÄÖÜß]|(?:^|\s)(?:das|die|der|und|ist|wir|ein|für|mit|auf|von|den|des)\s/i.test(cleanText) ? 'de' : lang
       const res = await fetch('/api/presenter/tts', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
-        // Detect response language from text content (not UI language)
-        // German text typically contains umlauts, ß, or common German words
-        const textLang = /[äöüÄÖÜß]|(?:^|\s)(?:das|die|der|und|ist|wir|ein|für|mit|auf|von|den|des)\s/i.test(cleanText) ? 'de' : lang
         body: JSON.stringify({ text: cleanText, language: textLang }),
         signal: controller.signal,
       })