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train_bge_v3.py

@@ -453,6 +453,352 @@ SYMPTOM_VARIANTS = [
         "customer came in for oil change", "just here for an oil change",
         "routine oil change", "express oil change", "quick lube oil change",
     ], "subcategories": ["Oil, Fluids and Chemicals > Functional Fluid, Lubricant, Grease (including Additives)"]},
+    # ====================== EXPANDED TRAINING DATA (v3+) ======================
+    # Category 1: Catalytic Converter / Exhaust (expanded)
+    {"symptoms": [
+        "rotten egg smell from exhaust", "smells like sulfur", "eggs smell when I drive it",
+        "bad exhaust smell", "stinks out the tailpipe", "nasty smell coming from exhaust",
+        "exhaust smells rich", "exhaust smells burnt", "fumes smell weird",
+        "sulfer smell", "sulphur smell", "egg smell from car",
+        "cat smell bad", "converter smell", "clogged cat", "plugged cat",
+        "stopped up cat", "bad catalytic converter", "cat code stored",
+        "P0420 in memory", "P0430 stored", "catalyst efficiency code",
+        "bank 1 cat low efficiency", "bank 2 cat low efficiency",
+        "failed emissions for cat", "won't get out of its own way",
+        "no power uphill and smells", "runs hot and smells funny",
+        "glowing cat underneath", "rattle in catalytic converter",
+        "something loose in exhaust", "honeycomb busted in cat",
+        "cat material broke apart", "exhaust restriction", "restricted exhaust",
+        "backpressure high", "muffled exhaust flow", "sounds choked up",
+        "tailpipe barely blowing", "smells like burning chemicals",
+        "fume smell in cabin", "cat is toast", "cat's smoked",
+        "converter stopped up", "catylitic converter bad", "cadillac converter bad",
+        "cad converter issue", "cat con bad", "replace front pipe/cat",
+        "after cat damaged", "downstream cat code", "upstream cat failure",
+        "MIL on for catalyst", "check engine light for cat",
+        "exhaust smells like ass", "smells like something died in exhaust",
+        "smells like cat pee", "smells like ammonia from exhaust",
+        "sounds like marbles in a can",
+    ], "subcategories": ["Exhaust > Catalytic Converter"]},
+    # Category 2: Starter / No-Start (expanded)
+    {"symptoms": [
+        "car won't start, just clicks", "single click no start",
+        "rapid clicking when turning key", "click click click won't start",
+        "no crank no start", "won't crank", "won't turn over",
+        "doesn't even try to start", "dead on the lot", "dead in driveway",
+        "won't fire up", "starter just spins", "starter freewheels",
+        "grinding when starting", "hard start then nothing",
+        "intermittent no start", "starts sometimes",
+        "have to turn key a few times", "push button does nothing",
+        "key on and nothing happens", "dash lights on but no crank",
+        "all lights come on but won't start", "battery seems fine but won't start",
+        "slow crank", "cranks real slow", "lazy starter", "drags when cranking",
+        "long crank then starts", "cranks but won't start",
+        "turns over but won't fire", "starter sticking", "solenoid clicking",
+        "starter relay maybe", "tap starter and it starts",
+        "starts after hitting starter", "hot soak no start",
+        "won't start when hot", "starts cold not hot", "starter heat soak",
+        "dead spot in starter", "starter hangs up", "locked up starter",
+        "starter seized", "starter out", "bad starter motor",
+        "needs starter/sol", "starter engagement noise",
+        "starter stays engaged", "starter keeps spinning after start",
+        "no start concern", "vehicle will not crank",
+        "cust states no start", "c/s heard one click",
+        "c/s intermittent crank/no crank", "c/s engine won't rotate by key",
+        "RO: no crank verified", "RO: starter inop",
+        "RO: starter drawing high amps", "starter bad", "strtr bad",
+        "n/s condition", "nc/ns",
+    ], "subcategories": ["Electrical, Charging and Starting > Starter and Related Components"]},
+    # Category 3: Ignition / Check Engine Light (expanded)
+    {"symptoms": [
+        "check engine light on, running rough", "CEL on", "MIL on",
+        "SES light on", "service engine soon light", "engine light came on",
+        "check eng lite on", "check motor light", "running rough",
+        "rough idle", "idles rough", "shaking at idle", "engine shaking",
+        "car is sputtering", "hesitates on takeoff", "stumble on acceleration",
+        "bucks when accelerating", "jerks under load", "missing", "has a miss",
+        "misfire", "multiple misfire", "cyl 3 misfire",
+        "P0300", "P0301", "P0302", "P0303", "P0304",
+        "coil code", "bad coil maybe", "spark plugs due",
+        "needs tune up", "needs plugs and coils",
+        "cuts out going uphill", "breaks up under load",
+        "feels like it's dropping a cylinder", "sounds like a Subaru now",
+        "flashing check engine light", "CEL blinking", "MIL flashing",
+        "loss of power with engine light", "hard start and rough run",
+        "runs like crap", "runs like dog shit", "engine chugging",
+        "surging at idle", "vibration from engine", "hesitation from stop",
+        "popping through intake", "backfiring", "afterfire out exhaust",
+        "fuel smell and misfire", "wet plug", "fouled plug",
+        "burnt coil boot", "arc mark on coil", "secondary ignition fault",
+        "ignition breakdown", "coil pack bad", "coil rail issue",
+        "bad plug wire", "spark leak", "engine skips", "skip in engine",
+        "rough on cold start", "misfire when wet/raining",
+        "starts and stumbles", "won't rev clean",
+        "poor acceleration, no codes yet", "customer says needs tune-up",
+        "RO: ck eng lt on, misfire felt", "RO: rough run/poor accel",
+        "RO: scanned codes p030x", "c/s vehicle shudders at stops",
+        "c/s engine hiccups", "it only does it when it rains",
+        "sounds like popcorn under the hood",
+    ], "subcategories": ["Ignition > Secondary Ignition"]},
+    # Category 4: Cooling System / Overheating (expanded)
+    {"symptoms": [
+        "car is overheating", "running hot", "temp gauge high",
+        "temperature climbing", "needle almost in the red", "temp pegged hot",
+        "engine got hot", "overheated on freeway", "overheats in traffic",
+        "overheats at idle", "overheats with AC on", "steam from hood",
+        "smoke from hood but not smoke", "coolant leaking", "antifreeze leak",
+        "losing coolant", "have to keep adding coolant", "low coolant light on",
+        "coolant smell", "sweet smell from engine bay", "puking coolant",
+        "blowing coolant out", "spits coolant out reservoir",
+        "overflow bottle boiling", "coolant reservoir empty",
+        "reservoir keeps overflowing", "radiator cracked", "radiator leaking",
+        "hose blew off", "upper hose rock hard", "coolant all over engine bay",
+        "green fluid under car", "orange fluid under car", "pink fluid leaking",
+        "cust states engine hot", "c/s overheating concern", "c/s temp light on",
+        "check gauges message", "hot coolant warning", "engine over temp message",
+        "over temp shut down", "limp mode from overheating",
+        "coolant disappearing no visible leak", "pressure test failed",
+        "cooling system won't hold pressure", "rad cap bad",
+        "bad cap causing boil over", "needs radiator",
+        "air pocket in system", "air locked cooling system",
+        "boiling over", "hot but then goes back down", "temp fluctuates",
+    ], "subcategories": ["Belts and Cooling > Radiators, Coolers and Related Components"]},
+    # Category 4b: Cooling — thermostat specific
+    {"symptoms": [
+        "thermostat stuck", "thermostat not opening",
+        "needs thermostat housing", "temp gauge drops on the freeway",
+    ], "subcategories": ["Belts and Cooling > Thermostat and Housing"]},
+    # Category 4c: Cooling — water pump specific
+    {"symptoms": [
+        "water pump leaking", "water pump making noise",
+    ], "subcategories": ["Belts and Cooling > Water Pump and Related Components"]},
+    # Category 4d: Cooling — fan specific
+    {"symptoms": [
+        "fans not coming on", "cooling fan inop", "fan only works with AC",
+        "fan roaring all the time", "fan runs after I shut car off",
+    ], "subcategories": ["Belts and Cooling > Cooling Fan, Clutch and Motor"]},
+    # Category 4e: Cooling — heater / coolant crossover symptoms
+    {"symptoms": [
+        "heater blows cold then hot", "no heat and overheating",
+        "bubbles in coolant bottle", "gurgling in dash",
+        "gurgling in cooling system", "heater quits when gauge goes high",
+        "heater only gets hot when I'm driving",
+        "smells like syrup in the car",
+    ], "subcategories": ["HVAC > Air Heater Components"]},
+    # Category 5: Strut Mounts / Upper Mounts (expanded)
+    {"symptoms": [
+        "upper mount plate worn", "strut mount bad", "top hat bad",
+        "top mount bad", "upper strut mount loose", "mount plate noisy",
+        "bearing plate bad", "strut bearing noisy",
+        "popping from front end", "front end clunk",
+        "thunk over speed bumps", "knock from left front",
+        "knock from right front", "noise when turning steering wheel",
+        "spring bind when turning", "creaks when turning",
+        "boing noise from front", "rubber twisting noise",
+        "pops backing out of driveway", "clunk when entering driveway",
+        "noise at top of strut", "play in upper mount",
+        "mount separated", "strut tower noise", "bearing seized in mount",
+        "steering notchy at low speed", "spring snaps when steering",
+        "front suspension popping", "suspension clunk over rough roads",
+        "rattle from strut area", "metal on metal from upper mount",
+        "top of strut moving", "mount collapsed", "mount blown out",
+        "mount mushroomed", "worn strut hats", "upper isolator bad",
+        "strut mount bearing plate", "front coilover mount noise",
+        "noise from cowl area over bumps", "sounds like loose shock",
+        "sounds like loose suspension bolt",
+        "customer says something up top is loose",
+        "RO: clunk from upper mounts", "RO: inspect strut mount brg",
+        "RO: top plate play noted", "RO: mount brg binding",
+        "c/s popping LF over bumps", "c/s front end creak when turning",
+        "strt mnt noisy", "upper plate worn", "bearing plate seized",
+        "steering snaps back weird after turn",
+    ], "subcategories": ["Suspension > Shocks and Struts"]},
+    # Category 6: Turbocharger / Boost (new)
+    {"symptoms": [
+        "turbo boost leak", "no boost", "not making boost",
+        "turbo not kicking in", "feels naturally aspirated now",
+        "no power till forever", "turbo lag bad", "laggy as hell",
+        "boost leak noise", "whooshing under acceleration",
+        "air noise when boosting", "hiss under boost", "whistle changed",
+        "turbo whining", "siren noise from turbo", "dentist drill noise",
+        "wastegate rattle", "rattle on decel from turbo",
+        "underboost code", "overboost code", "P0299", "P0234",
+        "boost pressure low", "boost too high", "limp mode turbo",
+        "goes into limp when I get on it", "reduced power with turbo",
+        "charge pipe blew off", "intercooler leak", "split boost hose",
+        "CAC leak", "turbo seals leaking", "smokes after boost",
+        "burning oil from turbo", "oil in intercooler pipes",
+        "shaft play in turbo", "turbo seized", "turbo blown",
+        "turbo toast", "bad turbocharger", "waste gate stuck",
+        "wastegate actuator bad", "boost solenoid bad",
+        "diverter valve issue", "BOV leaking", "surging under boost",
+        "cuts out in boost", "won't build boost past 5 psi",
+        "overboosting and fuel cuts", "flutter noise", "compressor surge",
+        "spools then falls flat", "boost comes and goes",
+        "slow spool", "late spool", "whistle then no power",
+        "check engine light with turbo code", "epc light with no boost",
+        "customer says turbo sounds louder", "customer says turbo quit",
+        "RO: verify underboost", "RO: boost leak suspected",
+        "RO: turbocharger noisy", "RO: wg rattle noted",
+        "turbski bad", "turbski no chooch", "no chooch from turbo",
+        "not spooling", "not spoolin", "boost dump noise", "charge air leak",
+        "whistles when I accelerate",
+    ], "subcategories": ["Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air"]},
+    # Category 7: Wheel Alignment (expanded)
+    {"symptoms": [
+        "customer requests alignment check", "needs alignment",
+        "alignment feels off", "pulls left", "pulls right",
+        "drifts left", "drifts right", "won't track straight",
+        "have to hold steering wheel crooked", "steering wheel off center",
+        "wheel is crooked going straight", "steering not centered",
+        "dog tracking", "crab walking", "wanders on highway",
+        "all over the road", "feels loose on freeway",
+        "uneven tire wear", "inside tire wear", "outside tire wear",
+        "feathered tires", "cupping on tires",
+        "new tires need alignment", "after hitting pothole",
+        "after curb hit", "after accident alignment check",
+        "after suspension work needs alignment",
+        "after tie rod replacement", "after struts needs alignment",
+        "after control arm replacement", "shimmy and pull",
+        "tracks weird", "veers when braking", "pulls on crowned roads",
+        "rear feels like it steers itself",
+        "steering wheel not straight after repair",
+        "toe looks off", "camber off", "caster issue", "alignment out",
+        "front end alignment", "4 wheel alignment", "thrust angle issue",
+        "set the toe", "straighten wheel",
+        "pulling since I bought tires", "eating tires",
+        "chewing up front tires", "wearing out rear tires funny",
+        "customer says it don't drive straight",
+        "RO: ck/aln", "RO: align after front end work",
+        "RO: steer wheel off ctr", "RO: pulls R verify",
+        "RO: abnormal tire wear, chk alignment",
+        "c/s vehicle drifts", "c/s wheel crooked",
+        "needs front end lined up",
+    ], "subcategories": ["Suspension > Alignment"]},
+    # Category 8: Oil Change / Coupon / Mailer (expanded)
+    {"symptoms": [
+        "came in with mailer for oil change", "coupon oil change",
+        "mailer special oil change", "LOF", "lube oil filter",
+        "lube, oil, filter", "oil service", "synthetic service",
+        "full syn oil service", "conventional oil service",
+        "blend oil change", "express oil change", "quick lube service",
+        "basic service special", "maintenance special",
+        "5k service", "5000 mile service", "3k service", "7,500 mile service",
+        "routine maintenance", "due for service", "service due light on",
+        "maintenance light on for oil", "oil life says 15%",
+        "oil life monitor on", "change oil soon message",
+        "change engine oil message", "oil reset needed",
+        "annual oil service", "came in for advertised oil special",
+        "internet coupon for oil change", "mail flyer oil special",
+        "postcard oil change deal", "seasonal service special",
+        "winter service oil change", "first free oil change",
+        "complimentary oil change", "prepaid maintenance oil service",
+        "works package / oil service", "tire rotation and oil change special",
+        "LOF/tire rotate", "oil/filter change", "engine oil and filter",
+        "minor service", "A service", "B service with oil",
+        "factory maintenance due", "scheduled maintenance",
+        "PM service", "preventive maintenance", "pit stop service",
+        "customer says just needs fluids and oil",
+        "cust here for sticker oil change", "the little light says oil",
+        "my oil percentage is low", "needs oil and reset",
+        "came in with $29.95 oil coupon", "came in with ValPak oil coupon",
+        "came in from postcard offer", "RO: customer requests LOF",
+        "RO: perform LOF", "RO: oil svc per coupon",
+        "RO: maint light on / oil change",
+        "RO: customer here for advertised special",
+    ], "subcategories": ["Oil, Fluids and Chemicals > Functional Fluid, Lubricant, Grease (including Additives)"]},
+    # ====================== BONUS: Symptom → Repair Patterns ======================
+    # Brake — rotors/pulsation
+    {"symptoms": [
+        "car shakes when I brake", "vibration when stopping at highway speed",
+        "steering wheel shakes when braking at 65",
+    ], "subcategories": ["Brake > Drums and Rotors"]},
+    # Brake — hydraulics
+    {"symptoms": [
+        "brake pedal goes to floor", "pedal is hard as a rock",
+        "brake pedal spongy",
+    ], "subcategories": ["Brake > Brake Hydraulics"]},
+    # Brake — stuck caliper
+    {"symptoms": [
+        "smells hot after driving", "smells like brakes after short drive",
+    ], "subcategories": ["Brake > Brake Hydraulics"]},
+    # Battery — parasitic draw
+    {"symptoms": [
+        "battery keeps dying overnight", "radio and dash reboot when I start it",
+    ], "subcategories": ["Electrical, Charging and Starting > Battery and Related Components"]},
+    # Belt — serpentine off
+    {"symptoms": [
+        "all the lights came on and steering got hard",
+        "chirp chirp chirp from engine", "it sounds supercharged now",
+    ], "subcategories": ["Belts and Cooling > Accessory Drive Belt System Components"]},
+    # Engine — valve train / detonation
+    {"symptoms": [
+        "ticking after oil change", "sounds like marbles in a can",
+    ], "subcategories": ["Engine > Valve Train Components"]},
+    # Engine — mounts
+    {"symptoms": [
+        "thumps when I stop", "clunk when shifting into drive",
+        "shudders taking off",
+    ], "subcategories": ["Engine > Engine and Transmission Mounts"]},
+    # Exhaust — leak / flex pipe
+    {"symptoms": [
+        "car sounds louder but only when accelerating",
+        "exhaust leak at flex pipe", "loud exhaust and smell",
+        "needs exhaust manifold/cat",
+    ], "subcategories": ["Exhaust > Exhaust and Tail Pipes"]},
+    # Exhaust — heat shield
+    {"symptoms": [
+        "rattles underneath at idle",
+    ], "subcategories": ["Exhaust > Exhaust and Tail Pipes"]},
+    # Emission Control — EVAP
+    {"symptoms": [
+        "gas smell after I fill up", "takes forever to fill gas tank",
+        "gas pump keeps clicking off",
+    ], "subcategories": ["Emission Control > Evaporative System"]},
+    # Driveline — u-joint / lash
+    {"symptoms": [
+        "thunk when I let off the gas",
+    ], "subcategories": ["Driveline and Axles > Drive Shaft"]},
+    # Tire — slow leak
+    {"symptoms": [
+        "one tire keeps going low", "flaps or slaps at highway speed",
+    ], "subcategories": ["Tire and Wheel > Tire"]},
+    # Tire — balance / vibration
+    {"symptoms": [
+        "steering wheel shakes at 65", "vibration at highway speed",
+        "sounds like an airplane on the highway",
+    ], "subcategories": ["Tire and Wheel > Tire"]},
+    # Suspension — springs / lean
+    {"symptoms": [
+        "car leans on one side", "my truck squats in the back",
+        "rear end wiggles over bumps",
+    ], "subcategories": ["Suspension > Suspension, Springs and Related Components"]},
+    # HVAC — blend door actuator
+    {"symptoms": [
+        "clicking in dash", "no heat on passenger side",
+    ], "subcategories": ["HVAC > Motors, Core, Case and Related Components"]},
+    # HVAC — water on floor
+    {"symptoms": [
+        "water on passenger floor", "smoke from the vents",
+    ], "subcategories": ["HVAC > A/C Condenser and Evaporator"]},
+    # Transfer case
+    {"symptoms": [
+        "4x4 light flashing",
+    ], "subcategories": ["Transfer Case > Transfer Case Components"]},
+    # ABS / traction
+    {"symptoms": [
+        "traction light and ABS light on together",
+    ], "subcategories": ["Brake > ABS Components"]},
+    # Engine — gaskets / oil smell
+    {"symptoms": [
+        "can smell oil but no drips", "white smoke only in the morning",
+    ], "subcategories": ["Engine > Gaskets and Sealing Systems"]},
+    # Air and Fuel — throttle / limp
+    {"symptoms": [
+        "won't go over 20 mph", "gas pedal does nothing sometimes",
+        "engine races at stoplights", "car falls on its face",
+        "black smoke when I punch it",
+    ], "subcategories": ["Air and Fuel Delivery > Fuel Injection System and Related Components"]},
 ]
 
 SYMPTOM_TEMPLATES = [
@@ -582,6 +928,69 @@ HARD_NEGATIVES = [
     {"query": "humming from wheel area", "positive": "Driveline and Axles > Wheel Bearings, Seals, and Related Components", "negative": "Tire and Wheel > Tire"},
     {"query": "humming from wheel area", "positive": "Driveline and Axles > Wheel Bearings, Seals, and Related Components", "negative": "Brake > Brake Hydraulics"},
     {"query": "humming from wheel area", "positive": "Driveline and Axles > Wheel Bearings, Seals, and Related Components", "negative": "Driveline and Axles > Differential"},
+    # ====================== EXPANDED HARD NEGATIVES (v3+) ======================
+    # Catalytic converter — not engine, not evap, not fuel, not muffler
+    {"query": "rotten egg smell from exhaust", "positive": "Exhaust > Catalytic Converter", "negative": "Engine > Gaskets and Sealing Systems"},
+    {"query": "rotten egg smell from exhaust", "positive": "Exhaust > Catalytic Converter", "negative": "Air and Fuel Delivery > Fuel Pumps and Related Components"},
+    {"query": "sulfur smell", "positive": "Exhaust > Catalytic Converter", "negative": "Exhaust > Mufflers"},
+    {"query": "P0420 in memory", "positive": "Exhaust > Catalytic Converter", "negative": "Emission Control > Sensors"},
+    {"query": "cat code stored", "positive": "Exhaust > Catalytic Converter", "negative": "Emission Control > Evaporative System"},
+    {"query": "sounds like marbles in a can", "positive": "Exhaust > Catalytic Converter", "negative": "Engine > Valve Train Components"},
+    {"query": "honeycomb busted in cat", "positive": "Exhaust > Catalytic Converter", "negative": "Exhaust > Mufflers"},
+    {"query": "restricted exhaust", "positive": "Exhaust > Catalytic Converter", "negative": "Exhaust > Exhaust and Tail Pipes"},
+    # Starter — not battery, not alternator, not ignition
+    {"query": "car won't start, just clicks", "positive": "Electrical, Charging and Starting > Starter and Related Components", "negative": "Electrical, Charging and Starting > Battery and Related Components"},
+    {"query": "rapid clicking when turning key", "positive": "Electrical, Charging and Starting > Starter and Related Components", "negative": "Electrical, Charging and Starting > Alternator / Generator and Related Components"},
+    {"query": "tap starter and it starts", "positive": "Electrical, Charging and Starting > Starter and Related Components", "negative": "Ignition > Secondary Ignition"},
+    {"query": "hot soak no start", "positive": "Electrical, Charging and Starting > Starter and Related Components", "negative": "Air and Fuel Delivery > Fuel Pumps and Related Components"},
+    {"query": "nc/ns", "positive": "Electrical, Charging and Starting > Starter and Related Components", "negative": "Electrical, Charging and Starting > Battery and Related Components"},
+    # Ignition / CEL — not sensors, not fuel, not engine mechanical
+    {"query": "CEL on", "positive": "Ignition > Secondary Ignition", "negative": "Emission Control > Sensors"},
+    {"query": "runs like crap", "positive": "Ignition > Secondary Ignition", "negative": "Air and Fuel Delivery > Fuel Injection System and Related Components"},
+    {"query": "engine chugging", "positive": "Ignition > Secondary Ignition", "negative": "Engine > Valve Train Components"},
+    {"query": "coil pack bad", "positive": "Ignition > Secondary Ignition", "negative": "Electrical, Charging and Starting > Alternator / Generator and Related Components"},
+    {"query": "fouled plug", "positive": "Ignition > Secondary Ignition", "negative": "Air and Fuel Delivery > Filters"},
+    {"query": "it only does it when it rains", "positive": "Ignition > Secondary Ignition", "negative": "Belts and Cooling > Accessory Drive Belt System Components"},
+    # Overheating — not thermostat, not water pump (primary = radiator category)
+    {"query": "overheating", "positive": "Belts and Cooling > Radiators, Coolers and Related Components", "negative": "Belts and Cooling > Thermostat and Housing"},
+    {"query": "overheating", "positive": "Belts and Cooling > Radiators, Coolers and Related Components", "negative": "Belts and Cooling > Water Pump and Related Components"},
+    {"query": "temp pegged hot", "positive": "Belts and Cooling > Radiators, Coolers and Related Components", "negative": "Engine > Gaskets and Sealing Systems"},
+    {"query": "coolant leaking", "positive": "Belts and Cooling > Radiators, Coolers and Related Components", "negative": "Belts and Cooling > Hoses and Pipes"},
+    # Strut mounts — not control arms, not steering, not wheel bearings
+    {"query": "upper mount plate worn", "positive": "Suspension > Shocks and Struts", "negative": "Suspension > Suspension, Springs and Related Components"},
+    {"query": "strut mount bad", "positive": "Suspension > Shocks and Struts", "negative": "Steering > Steering, Gear and Related Components"},
+    {"query": "bearing plate bad", "positive": "Suspension > Shocks and Struts", "negative": "Driveline and Axles > Wheel Bearings, Seals, and Related Components"},
+    {"query": "mount collapsed", "positive": "Suspension > Shocks and Struts", "negative": "Engine > Engine and Transmission Mounts"},
+    {"query": "steering snaps back weird after turn", "positive": "Suspension > Shocks and Struts", "negative": "Steering > Power Steering Hoses, Pumps, and Related Components"},
+    # Turbo — not intake filters, not exhaust, not engine
+    {"query": "turbo boost leak", "positive": "Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air", "negative": "Air and Fuel Delivery > Filters"},
+    {"query": "no boost", "positive": "Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air", "negative": "Air and Fuel Delivery > Fuel Injection System and Related Components"},
+    {"query": "P0299", "positive": "Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air", "negative": "Emission Control > Sensors"},
+    {"query": "turbo blown", "positive": "Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air", "negative": "Engine > Valve Train Components"},
+    {"query": "whistles when I accelerate", "positive": "Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air", "negative": "Belts and Cooling > Accessory Drive Belt System Components"},
+    {"query": "charge pipe blew off", "positive": "Air and Fuel Delivery > Turbocharger, Supercharger and Ram Air", "negative": "Belts and Cooling > Hoses and Pipes"},
+    # Alignment — not tire, not suspension components, not steering
+    {"query": "customer requests alignment check", "positive": "Suspension > Alignment", "negative": "Tire and Wheel > Tire"},
+    {"query": "customer requests alignment check", "positive": "Suspension > Alignment", "negative": "Steering > Steering, Gear and Related Components"},
+    {"query": "eating tires", "positive": "Suspension > Alignment", "negative": "Tire and Wheel > Tire"},
+    {"query": "dog tracking", "positive": "Suspension > Alignment", "negative": "Driveline and Axles > Drive Shaft"},
+    {"query": "needs front end lined up", "positive": "Suspension > Alignment", "negative": "Suspension > Suspension, Springs and Related Components"},
+    # Oil change / mailer — not engine, not filters
+    {"query": "came in with mailer for oil change", "positive": "Oil, Fluids and Chemicals > Functional Fluid, Lubricant, Grease (including Additives)", "negative": "Engine > Gaskets and Sealing Systems"},
+    {"query": "LOF", "positive": "Oil, Fluids and Chemicals > Functional Fluid, Lubricant, Grease (including Additives)", "negative": "Engine > Filters"},
+    {"query": "maintenance light on for oil", "positive": "Oil, Fluids and Chemicals > Functional Fluid, Lubricant, Grease (including Additives)", "negative": "Electrical, Charging and Starting > Battery and Related Components"},
+    {"query": "oil life says 15%", "positive": "Oil, Fluids and Chemicals > Functional Fluid, Lubricant, Grease (including Additives)", "negative": "Engine > Cylinder Block Components"},
+    # Bonus cross-category disambiguation
+    {"query": "smells like syrup in the car", "positive": "HVAC > Air Heater Components", "negative": "Exhaust > Catalytic Converter"},
+    {"query": "all the lights came on and steering got hard", "positive": "Belts and Cooling > Accessory Drive Belt System Components", "negative": "Steering > Power Steering Hoses, Pumps, and Related Components"},
+    {"query": "battery keeps dying overnight", "positive": "Electrical, Charging and Starting > Battery and Related Components", "negative": "Electrical, Charging and Starting > Alternator / Generator and Related Components"},
+    {"query": "brake pedal goes to floor", "positive": "Brake > Brake Hydraulics", "negative": "Brake > Disc Pads and Brake Shoes"},
+    {"query": "gas smell after I fill up", "positive": "Emission Control > Evaporative System", "negative": "Air and Fuel Delivery > Fuel Pumps and Related Components"},
+    {"query": "clicking in dash", "positive": "HVAC > Motors, Core, Case and Related Components", "negative": "Electrical, Charging and Starting > Starter and Related Components"},
+    {"query": "thumps when I stop", "positive": "Engine > Engine and Transmission Mounts", "negative": "Suspension > Shocks and Struts"},
+    {"query": "car leans on one side", "positive": "Suspension > Suspension, Springs and Related Components", "negative": "Suspension > Alignment"},
+    {"query": "sounds like an airplane on the highway", "positive": "Driveline and Axles > Wheel Bearings, Seals, and Related Components", "negative": "Tire and Wheel > Tire"},
+    {"query": "won't go over 20 mph", "positive": "Air and Fuel Delivery > Fuel Injection System and Related Components", "negative": "Transmission > Automatic Transmission Components"},
 ]