Lamp testbench in Rust around the HPCS 6500

lampbench station / export / label / tm30 / calibrate replace the Python
lamp_station.py, lamp_export.py, label_printer.py, tm30.py and
calibration.py that lived in HPCS6500-py. The driver is a submodule
(HPCS6500/, like mppt-testbench). Workspace crates: tm30 (TM-30-18 port of
colour-science 0.4.7), brother-ql (raster protocol, byte-identical to
brother_ql) and lamp-label (QR + ID labels for the QL-820NWB).

Bundles are byte-identical to lamp_export.py's (golden tests); the station
runs end to end in a test against the simulated instrument.

tests/golden/bundles/export_avg5/metrics.json

@@ -0,0 +1,74 @@
+{
+  "name": "philips-a60",
+  "manufacturer": "Philips",
+  "model": "A60 8W 927",
+  "notes": "",
+  "instrument": "HPCS6500",
+  "measured_at": "2026-07-09T16:22:57+07:00",
+  "instrument_date": "2026-02-04",
+  "instrument_time": "15:38:14",
+  "readings_averaged": 5,
+  "tm30": {
+    "Rf": 82.8,
+    "Rg": 102.6
+  },
+  "cri": {
+    "Ra": 83.00858001708984,
+    "R1": 82.17662658691407,
+    "R2": 93.99931488037109,
+    "R3": 93.30018768310546,
+    "R4": 76.5554412841797,
+    "R5": 81.44241180419922,
+    "R6": 89.34300079345704,
+    "R7": 83.15747680664063,
+    "R8": 64.09416198730469,
+    "R9": 4.789063262939453,
+    "R10": 84.07984313964843,
+    "R11": 76.13002166748046,
+    "R12": 60.050942993164064,
+    "R13": 86.5272430419922,
+    "R14": 96.78124694824218,
+    "R15": 75.97555694580078
+  },
+  "photometric": {
+    "Phi_lm": 480.47785034179685,
+    "eta_lm_W": 57.135939025878905,
+    "CCT_K": 5652.32763671875,
+    "Duv": 0.0055332078598439695,
+    "SDCM": 4.718670845031738,
+    "TLCI": 67.89999389648438
+  },
+  "chromaticity": {
+    "x": 0.3289025008678436,
+    "y": 0.3489073276519775,
+    "u": 0.20149995386600494,
+    "v": 0.3206336498260498,
+    "u_prime": 0.20149995386600494,
+    "v_prime": 0.48095048069953916,
+    "CIE_X": 663.1466796875,
+    "CIE_Y": 703.4814453125,
+    "CIE_Z": 649.60947265625
+  },
+  "radiometric": {
+    "Phi_e_mW": 1493.6589111328126,
+    "Phi_euv_mW": 0.0,
+    "Phi_eb_mW": 470.34068603515624,
+    "Phi_ey_mW": 681.030615234375,
+    "Phi_er_mW": 331.6043762207031,
+    "Phi_efr_mW": 11.389583778381347,
+    "Phi_eir_mW": 0.0,
+    "Phi_e_total": 1494.364990234375
+  },
+  "electrical": {
+    "Voltage_V": 230.29462585449218,
+    "Current_A": 0.06532531827688218,
+    "Power_W": 8.404675102233886,
+    "Freq_Hz": 50.02176513671875,
+    "PF": 0.5586463570594787
+  },
+  "sensor": {
+    "PeakSignal": 53125.4,
+    "DarkSignal": 2234.8,
+    "Compensate": 2834.0
+  }
+}

tests/golden/bundles/export_avg5/spd.csv

@@ -0,0 +1,351 @@
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tests/golden/bundles/export_avg5/tm30.csv

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