Fix Mermaid diagram rendering in documentation

[lostcontrol]

Fixes an issue where Mermaid diagrams were displaying as raw text instead of rendering in the Jekyll documentation. The script responsible for initializing Mermaid has been corrected to handle Kramdown's HTML output structure accurately.

I have deployed a local Jekyll server to port 3000 where you can see the fix in action.

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PR created automatically by Jules for task 1751822349081085163 started by @lostcontrol

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[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
controller
actor.py	61	10	84%	41–42, 63, 74, 80–84, 104
arduino.py	44	44	0%	18–81
config.py	11	1	91%	32
device.py	288	164	43%	44, 47, 50, 53, 56–57, 64–65, 68–69, 72, 78, 81, 91, 95, 117–122, 125, 128, 131–134, 145–147, 177, 182, 189–192, 195–196, 201–220, 225–228, 232–244, 249–259, 262–264, 269–270, 273–291, 296–302, 305–307, 311–312, 315, 318, 321, 326–327, 332, 335–364, 367–390, 395–398, 401, 405
disinfection.py	158	84	47%	48–52, 64, 66, 87–88, 95–98, 101–102, 119–145, 148–149, 152–153, 156–157, 160–161, 165–166, 169–170, 173, 176–184, 187–189, 192–196, 199–215, 218–220
dispatcher.py	38	38	0%	18–329
filtration.py	612	423	31%	74, 82–84, 94, 97, 100, 106, 118–120, 129, 132, 140–145, 148–153, 156–161, 164–168, 171–174, 177, 180–189, 221–309, 312–315, 318–323, 326–328, 331–332, 335–336, 339–341, 344, 347, 350–352, 355–356, 359–364, 367–372, 375–380, 383–387, 390–391, 394–395, 398–402, 405–406, 409–411, 414–416, 419–421, 424–425, 428, 431, 434–440, 443, 446, 449–451, 454–461, 464–477, 480–481, 485–493, 496–507, 510–514, 518–526, 529–537, 540–544, 547–552, 555–564, 568–572, 575–587, 591–599, 602–607, 610, 614–618, 621–624, 627–630, 633–634, 639, 642, 645, 649–653, 656–666, 669–670, 673–679, 683–693, 696–698, 701–707, 710, 714–720, 723–727, 730–734, 737–738, 741–743, 746–751, 755–768, 771–772, 775–776, 779–781, 784–792, 795–798, 801–804, 807–812, 816–818, 821–826, 829–832, 835–837
heating.py	188	188	0%	18–269
lcd.py	55	9	84%	36–44
light.py	22	22	0%	18–50
mqtt.py	47	47	0%	18–78
sensor.py	99	42	58%	33, 42, 51, 55, 58–61, 69–70, 73, 76, 79–80, 87–89, 92–98, 110, 113, 127–128, 135–137, 140–152
swim.py	82	25	70%	63–64, 77–78, 87–89, 92–97, 110–112, 115–120, 123–126
tank.py	110	110	0%	18–163
TOTAL	1899	1207	36%

Tests	Skipped	Failures	Errors	Time
99	0 💤	0 ❌	0 🔥	19.568s ⏱️