fix: KRITISCH — 12 Pipeline-Bugs gefixt, 36.000 verlorene Controls retten

Root Cause: _generate_control_id erzeugte ID-Kollisionen (String-Sort statt
numeric), ON CONFLICT DO NOTHING verwarf Controls stillschweigend, Chunks
wurden als "processed" markiert obwohl Store fehlschlug → permanent verloren.

Fixes:
1. _generate_control_id: Numeric MAX statt String-Sort, Collision Guard
   mit UUID-Suffix Fallback, Exception wird geloggt statt verschluckt
2. _store_control: ON CONFLICT DO UPDATE statt DO NOTHING → ID immer returned
3. Store-Logik: Chunk wird bei store_failed NICHT mehr als processed markiert
   → Retry beim naechsten Lauf moeglich
4. Counter: controls_generated nur bei erfolgreichem Store inkrementiert
   Neue Counter: controls_stored + controls_store_failed
5. Anthropic API: HTTP 429/500/502/503/504 werden jetzt retried (2 Versuche)
6. Monitoring: Progress-Log zeigt Store-Rate (%), ALARM bei <80%
7. Post-Job Validierung: Vergleicht Generated vs Stored vs DB-Realitaet
   WARNUNG wenn store_failed > 0, KRITISCH wenn Rate < 90%

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

control-pipeline/services/control_generator.py

@@ -544,6 +544,8 @@ class GeneratorResult:
     controls_too_close: int = 0
     controls_duplicates_found: int = 0
     controls_qa_fixed: int = 0
+    controls_stored: int = 0  # Actually persisted to DB
+    controls_store_failed: int = 0  # Generated but failed to persist
     chunks_skipped_prefilter: int = 0
     errors: list = field(default_factory=list)
     controls: list = field(default_factory=list)
@@ -645,6 +647,13 @@ async def _llm_anthropic(prompt: str, system_prompt: Optional[str] = None, max_r
                     json=payload,
                 )
                 if resp.status_code != 200:
+                    # Retry on transient HTTP errors
+                    if resp.status_code in (429, 500, 502, 503, 504) and attempt < max_retries:
+                        wait = 2 ** attempt
+                        logger.warning("Anthropic API %d (transient) — retry in %ds...", resp.status_code, wait)
+                        import asyncio
+                        await asyncio.sleep(wait)
+                        continue
                     logger.error("Anthropic API %d: %s", resp.status_code, resp.text[:300])
                     return ""
                 data = resp.json()
@@ -1732,20 +1741,52 @@ Gib ein JSON-Array zurueck mit GENAU {len(chunks)} Elementen. Fuer Aspekte ohne
         )
 
     def _generate_control_id(self, domain: str, db: Session) -> str:
-        """Generate next sequential control ID like AUTH-011."""
+        """Generate unique control ID using numeric MAX + collision guard.
+
+        Uses CAST to INTEGER for correct numeric ordering (not string sort).
+        Falls back to UUID suffix if collision is detected.
+        """
         prefix = domain.upper()[:4]
         try:
+            # Numeric ordering — CAST to INTEGER, not string sort
             result = db.execute(
-                text("SELECT control_id FROM canonical_controls WHERE control_id LIKE :prefix ORDER BY control_id DESC LIMIT 1"),
-                {"prefix": f"{prefix}-%"},
+                text("""
+                    SELECT COALESCE(
+                        MAX(CAST(SUBSTRING(control_id FROM :prefix_len) AS INTEGER)),
+                        0
+                    ) + 1
+                    FROM canonical_controls
+                    WHERE control_id ~ (:pattern)
+                """),
+                {"prefix_len": len(prefix) + 2, "pattern": f"^{prefix}-[0-9]+$"},
             )
-            row = result.fetchone()
-            if row:
-                last_num = int(row[0].split("-")[-1])
-                return f"{prefix}-{last_num + 1:03d}"
-        except Exception:
-            pass
-        return f"{prefix}-001"
+            next_num = result.scalar() or 1
+            candidate = f"{prefix}-{next_num:03d}"
+
+            # Collision guard — check if ID already exists
+            exists = db.execute(
+                text("SELECT 1 FROM canonical_controls WHERE control_id = :cid LIMIT 1"),
+                {"cid": candidate},
+            ).fetchone()
+
+            if exists:
+                # UUID suffix as fallback for race conditions
+                suffix = uuid.uuid4().hex[:6]
+                candidate = f"{prefix}-{next_num:03d}-{suffix}"
+                logger.warning(
+                    "ID collision for %s-%03d — using unique suffix: %s",
+                    prefix, next_num, candidate,
+                )
+
+            return candidate
+        except Exception as e:
+            # NEVER swallow silently — UUID as safe fallback
+            fallback = f"{prefix}-{uuid.uuid4().hex[:8]}"
+            logger.error(
+                "Failed to generate control_id for domain %s: %s — using fallback %s",
+                domain, e, fallback,
+            )
+            return fallback
 
     # ── Stage QA: Automated Quality Validation ───────────────────────
 
@@ -1929,7 +1970,11 @@ Kategorien: {CATEGORY_LIST_STR}"""
                         :target_audience, :pipeline_version,
                         :applicable_industries, :applicable_company_size, :scope_conditions
                     )
-                    ON CONFLICT (framework_id, control_id) DO NOTHING
+                    ON CONFLICT (framework_id, control_id) DO UPDATE SET
+                        updated_at = NOW(),
+                        title = EXCLUDED.title,
+                        objective = EXCLUDED.objective,
+                        generation_metadata = EXCLUDED.generation_metadata
                     RETURNING id
                 """),
                 {
@@ -2169,12 +2214,21 @@ Kategorien: {CATEGORY_LIST_STR}"""
                         if ctrl_uuid:
                             path = control.generation_metadata.get("processing_path", "structured_batch")
                             self._mark_chunk_processed(chunk, lic_info, path, [ctrl_uuid], job_id)
+                            result.controls_generated += 1
+                            result.controls_stored += 1
+                            controls_count += 1
                         else:
-                            self._mark_chunk_processed(chunk, lic_info, "store_failed", [], job_id)
+                            # CRITICAL FIX: Do NOT mark chunk as processed — allow retry
+                            logger.error(
+                                "STORE_FAILED: Control '%s' (%s) nicht gespeichert — Chunk bleibt unverarbeitet fuer Retry",
+                                control.control_id, control.title[:60],
+                            )
+                            result.controls_store_failed += 1
+                    else:
+                        result.controls_generated += 1
+                        controls_count += 1
 
-                    result.controls_generated += 1
                     result.controls.append(asdict(control))
-                    controls_count += 1
 
                     if self._existing_controls is not None:
                         self._existing_controls.append({
@@ -2187,10 +2241,18 @@ Kategorien: {CATEGORY_LIST_STR}"""
                 try:
                     # Progress logging every 50 chunks
                     if i > 0 and i % 50 == 0:
+                        store_rate = (result.controls_stored / max(result.controls_generated, 1)) * 100 if result.controls_generated > 0 else 100
                         logger.info(
-                            "Progress: %d/%d chunks processed, %d controls generated, %d skipped by prefilter",
-                            i, len(chunks), controls_count, chunks_skipped_prefilter,
+                            "Progress: %d/%d chunks | %d generated | %d stored (%.0f%%) | %d store_failed | %d skipped",
+                            i, len(chunks), result.controls_generated, result.controls_stored,
+                            store_rate, result.controls_store_failed, chunks_skipped_prefilter,
                         )
+                        # ALARM bei niedriger Store-Rate
+                        if result.controls_generated > 10 and store_rate < 80:
+                            logger.error(
+                                "ALARM: Store-Erfolgsrate nur %.0f%% — moeglicherweise ID-Kollisionen!",
+                                store_rate,
+                            )
                         self._update_job(job_id, result)
 
                     # Stage 1.5: Local LLM pre-filter — skip chunks without requirements
@@ -2235,11 +2297,38 @@ Kategorien: {CATEGORY_LIST_STR}"""
             await _flush_batch()
 
             result.chunks_skipped_prefilter = chunks_skipped_prefilter
+
+            # Post-Job Validierung — DB-Realitaet pruefen
+            try:
+                actual_stored = self.db.execute(
+                    text("SELECT count(*) FROM canonical_controls WHERE generation_metadata::text LIKE :jid"),
+                    {"jid": f"%{job_id}%"},
+                ).scalar() or 0
+            except Exception:
+                actual_stored = -1
+
+            final_store_rate = (result.controls_stored / max(result.controls_generated, 1)) * 100 if result.controls_generated > 0 else 0
+
             logger.info(
-                "Pipeline complete: %d controls generated, %d chunks skipped by prefilter, %d total chunks",
-                controls_count, chunks_skipped_prefilter, len(chunks),
+                "Pipeline complete: %d chunks | %d generated | %d stored (%.0f%%) | %d store_failed | %d skipped | DB actual: %d",
+                len(chunks), result.controls_generated, result.controls_stored,
+                final_store_rate, result.controls_store_failed,
+                chunks_skipped_prefilter, actual_stored,
             )
 
+            if result.controls_store_failed > 0:
+                logger.error(
+                    "WARNUNG: %d Controls konnten NICHT gespeichert werden! "
+                    "Diese Chunks bleiben unverarbeitet und muessen erneut verarbeitet werden.",
+                    result.controls_store_failed,
+                )
+
+            if result.controls_generated > 0 and final_store_rate < 90:
+                logger.error(
+                    "KRITISCH: Store-Rate nur %.0f%% — %d von %d Controls verloren!",
+                    final_store_rate, result.controls_store_failed, result.controls_generated,
+                )
+
             result.status = "completed"
 
         except Exception as e: