fix(5.18): corectie 8 etichete coduri rare (verificare Opus pe coada sparse)

Subagent Opus a verificat cele 139 operatii cu coduri rare (R-ODO, OE-I,
OE-5, AITLV, OE-R, OE-8, OE-7): 130 confirmate, 8 corectate (source=opus_review):
- PERNA AER STG SPATE / PUNTE MOTRICA (x3): OE-R -> OE-1 (burduf suspensie
  pneumatica, NU airbag de retinere)
- INLOCUIT CABLU/SENZOR KM (x2): OE-I -> R-ODO (reparatie odometru, nu istoric import)
- SCHIMBAT FOAIE ARC: OE-8 -> OE-1 (arc suspensie, nu anvelopa)
- RULMENT SPATE (PIESA): OE-7 -> NUL (doar nume piesa, fara actiune)
- INLOCUIT CALCULATOR P INJECTIE: OE-7 -> OE-1 (inlocuire hardware, fara programare)

NUL 2200 -> 2201. SERVICII VULCANIZARE (Opus->NUL, increderea 0.5) tinut
neschimbat: vulcanizarea e reparatie reala de pneu, nu non-operatie (de decis user).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/data/operatii-etichetate.json

@@ -43346,9 +43346,9 @@
   {
     "denumire": "INLOC. PERNA AER STG SPATE",
     "denumire_normalizata": "INLOC. PERNA AER STG SPATE",
-    "cod": "OE-R",
+    "cod": "OE-1",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
@@ -44162,17 +44162,17 @@
   {
     "denumire": "INLOCUIRE PERNA AER PUNTE MOTRICA",
     "denumire_normalizata": "INLOCUIRE PERNA AER PUNTE MOTRICA",
-    "cod": "OE-R",
+    "cod": "OE-1",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
     "denumire": "INLOCUIRE PERNA AER PUNTE MOTRICA DRT. SPRE FATA",
     "denumire_normalizata": "INLOCUIRE PERNA AER PUNTE MOTRICA DRT. SPRE FATA",
-    "cod": "OE-R",
+    "cod": "OE-1",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
@@ -58562,9 +58562,9 @@
   {
     "denumire": "INLOCUIT CABLU KM",
     "denumire_normalizata": "INLOCUIT CABLU KM",
-    "cod": "OE-I",
+    "cod": "R-ODO",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
@@ -58882,9 +58882,9 @@
   {
     "denumire": "INLOCUIT CALCULATOR P INJECTIE",
     "denumire_normalizata": "INLOCUIT CALCULATOR P INJECTIE",
-    "cod": "OE-7",
+    "cod": "OE-1",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
@@ -84890,9 +84890,9 @@
   {
     "denumire": "INLOCUIT SENZOR KM",
     "denumire_normalizata": "INLOCUIT SENZOR KM",
-    "cod": "OE-I",
+    "cod": "R-ODO",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
@@ -126706,9 +126706,9 @@
   {
     "denumire": "RULMENT SPATE (PIESA)",
     "denumire_normalizata": "RULMENT SPATE (PIESA)",
-    "cod": "OE-7",
+    "cod": null,
-    "is_nul": false,
+    "is_nul": true,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {
@@ -126842,9 +126842,9 @@
   {
     "denumire": "SCHIMBAT FOAIE ARC",
     "denumire_normalizata": "SCHIMBAT FOAIE ARC",
-    "cod": "OE-8",
+    "cod": "OE-1",
     "is_nul": false,
-    "source": "haiku_seed",
+    "source": "opus_review",
     "confidence": 0.7
   },
   {