Switch lamps to internal IDs; EAN becomes optional metadata

Directories rename from bare EANs to L0001..L0010 (measurement order).
metrics.json gains an ean field, and a rated block with advertised
values (flux, CCT, power, lifetime) where already documented, so the
site can show advertised-vs-measured deltas. One EAN can now cover
several lamp versions (variant field) and unbranded lamps need no
barcode.

lamps/L0003/metrics.json

@@ -0,0 +1,87 @@
+{
+  "name": "L0003",
+  "ean": "8850646092905",
+  "manufacturer": "LAMPTAN",
+  "model": "LED Bulb Gloss V2 9W E27 Warm White 2700K",
+  "notes": "Gloss V2 series attribution from retailer listings; verify against packaging.",
+  "rated": {
+    "CCT_K": 2700,
+    "Power_W": 9,
+    "lifetime_h": 10000
+  },
+  "instrument": "HPCS6500",
+  "measured_at": "2026-07-08T12:11:17+07:00",
+  "instrument_date": "2026-07-08",
+  "instrument_time": "16:34:23",
+  "readings_averaged": 5,
+  "tm30": {
+    "Rf": 89.2,
+    "Rg": 107.8
+  },
+  "cri": {
+    "Ra": 83.66969299316406,
+    "R1": 82.09189147949219,
+    "R2": 91.76870880126953,
+    "R3": 96.39212951660156,
+    "R4": 82.19517822265625,
+    "R5": 82.99137268066406,
+    "R6": 90.82891082763672,
+    "R7": 82.97420349121094,
+    "R8": 60.11514511108398,
+    "R9": 9.81113510131836,
+    "R10": 81.59440002441406,
+    "R11": 82.21892395019532,
+    "R12": 71.9334945678711,
+    "R13": 84.4675506591797,
+    "R14": 98.74761047363282,
+    "R15": 74.3365966796875
+  },
+  "supply": {
+    "ac_voltage": 230.0,
+    "ac_frequency": 50.0,
+    "dc_voltage": 24.0,
+    "dc_current": 5.0,
+    "mode": "AC"
+  },
+  "photometric": {
+    "Phi_lm": 1182.8281982421875,
+    "eta_lm_W": 131.840087890625,
+    "CCT_K": 3082.14755859375,
+    "Duv": 0.000637585879303515,
+    "SDCM": 1.4147728443145753,
+    "TLCI": 71.12107696533204
+  },
+  "chromaticity": {
+    "x": 0.43210033178329466,
+    "y": 0.4039463996887207,
+    "u": 0.24751004278659822,
+    "v": 0.34707491993904116,
+    "u_prime": 0.24751004278659822,
+    "v_prime": 0.520612382888794,
+    "CIE_X": 1852.51533203125,
+    "CIE_Y": 1731.8128173828125,
+    "CIE_Z": 702.9057006835938
+  },
+  "radiometric": {
+    "Phi_e_mW": 3543.28193359375,
+    "Phi_euv_mW": 0.0,
+    "Phi_eb_mW": 506.99805908203126,
+    "Phi_ey_mW": 1577.3231201171875,
+    "Phi_er_mW": 1386.302099609375,
+    "Phi_efr_mW": 69.71334381103516,
+    "Phi_eir_mW": 0.0,
+    "Phi_e_total": 3540.336328125
+  },
+  "electrical": {
+    "Voltage_V": 230.2023468017578,
+    "Current_A": 0.054313541203737256,
+    "Power_W": 8.971689033508301,
+    "Freq_Hz": 50.02181167602539,
+    "PF": 0.7175572514533997
+  },
+  "sensor": {
+    "PeakSignal": 52994.8,
+    "DarkSignal": 2531.6,
+    "Compensate": 2840.0
+  }
+}

lamps/L0003/spd.csv

@@ -0,0 +1,351 @@
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lamps/L0003/tm30.csv

@@ -0,0 +1,17 @@
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