Add helpful checks of channel names and PSK

[NomDeTom]

This is the fix for #10764 where a user can think that they have changed presets, but have an explicitly named channel that uses the old preset default name - user on NarrowSlow getting/sending channel messages with hash 0x08 rather than 0x12.

This also fixes the case where a completely blank password is entered rather than AQ==, which again yields an incorrect channel hash (0x0a rather than 0x08 for LongFast, for example) - this is skipped for licensed users.

I have also included a fix for a perennial problem - my inability to remember the difference between LongFast, Longfast, Long Fast, Long fast, long fast and longfast. The firmware checks if a channel name that is lower-cased and stripped of spaces matches the same as the modem preset, and flags this to the user.

If you're on a custom preset, you also get some help to match a channel correctly, although it can't be as exact.

All of these generate phone warnings, but I think they're necessary.

I've tested this, and it generates the warnings as expected.

example log lines:

WRN [Router] Channel 1 name 'nArrOwFast' looks like a mistype of 'NarrowFast' - clear the name to use the preset name automatically.
WRN [Router] Channel 1 name 'nArrOwFast' looks like a mistype of 'NarrowFast' - clear the name to use the preset name automatically.
WRN [Router] Channel 0 'nArrOwfast' matches preset 'NarrowFast' but uses a non-default key - other nodes on this preset cannot decode it.

🤝 Attestations

• I have tested that my proposed changes behave as described.
• I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • Heltec (Lora32) V3
  • LilyGo T-Deck
  • LilyGo T-Beam
  • RAK WisBlock 4631
  • Seeed Studio T-1000E tracker card
  • Other (please specify below)
    Promicro DIY

[github-actions]

⚡ Try this PR in the Web Flasher

Warning

This is an automated, unreviewed CI test build. Back up your device configuration
before flashing, and only flash devices you are able to recover.

Supported boards built by this PR (25)

	Device	Board	Platform
	Crowpanel Adv 3.5 TFT	elecrow-adv-35-tft	esp32-s3
	Heltec HT62	heltec-ht62-esp32c3-sx1262	esp32-c3
	Heltec Mesh Node 096	heltec-mesh-node-t096	nrf52840
	Heltec Mesh Node T1	heltec-mesh-node-t1	nrf52840
	Heltec Mesh Node T114	heltec-mesh-node-t114	nrf52840
	Heltec V3	heltec-v3	esp32-s3
	Heltec V4	heltec-v4	esp32-s3
	Raspberry Pi Pico	pico	rp2040
	Raspberry Pi Pico W	picow	rp2040
	RAK WisMesh Tag	rak_wismeshtag	nrf52840
	RAK WisBlock 11200	rak11200	esp32
	RAK WisBlock 11310	rak11310	rp2040
	RAK3312	rak3312	esp32-s3
	RAK WisBlock 4631	rak4631	nrf52840
	Seeed Wio Tracker L1	seeed_wio_tracker_L1	nrf52840
	Seeed Xiao NRF52840 Kit	seeed_xiao_nrf52840_kit	nrf52840
	Seeed Xiao ESP32-S3	seeed-xiao-s3	esp32-s3
	Station G2	station-g2	esp32-s3
	Station G3	station-g3	esp32-s3
	LILYGO T-Deck	t-deck-tft	esp32-s3
	LILYGO T-Echo	t-echo	nrf52840
	LILYGO T-Echo Plus	t-echo-plus	nrf52840
	LILYGO T-Impulse Plus	t-impulse-plus	nrf52840
	LilyGo T3-C6	tlora-c6	esp32-c6
	Seeed SenseCAP T1000-E	tracker-t1000-e	nrf52840

Build artifacts expire on 2026-07-26. Updated for ae97aad.

[Copilot]

Pull request overview

This PR adds AdminModule-side validation/warnings to help users avoid channel-name and PSK configurations that unintentionally diverge from modem preset expectations, reducing silent interoperability failures (notably around preset changes and “blank” inputs).

Changes:

• Emit warnings after a channel is saved to catch blank PSKs (with licensing exceptions) and preset-name/PSK mismatches.
• Emit warnings after a modem preset change to detect channels still named like the old preset or colliding with the new preset name.
• Add helper normalization for loose preset-name comparison (case-insensitive, spaces stripped).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
src/modules/AdminModule.h	Declares new internal warning helpers for LoRa preset changes and channel updates.
src/modules/AdminModule.cpp	Implements normalization + warning logic, and wires warnings into handleSetConfig() and handleSetChannel().

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

[github-actions]

Firmware Size Report

22 targets | vs develop: 22 increased, net +60,132 (+58.7 KB)

Target	Size	vs develop
heltec-vision-master-e213-inkhud	2,219,408	📈 +3,280 (+3.2 KB)
rak11200	1,855,216	📈 +3,232 (+3.2 KB)
elecrow-adv-35-tft	3,410,272	📈 +3,184 (+3.1 KB)
heltec-ht62-esp32c3-sx1262	2,129,280	📈 +3,136 (+3.1 KB)
tlora-c6	2,362,688	📈 +3,136 (+3.1 KB)

Show 17 more target(s)

Target	Size	vs develop
heltec-v4	2,270,736	📈 +3,120 (+3.0 KB)
heltec-v3	2,258,272	📈 +3,056 (+3.0 KB)
seeed-xiao-s3	2,270,768	📈 +3,024 (+3.0 KB)
rak3312	2,266,704	📈 +2,800 (+2.7 KB)
picow	1,239,784	📈 +2,784 (+2.7 KB)
pico2w	1,215,808	📈 +2,740 (+2.7 KB)
station-g2	2,260,928	📈 +2,736 (+2.7 KB)
station-g3	2,260,928	📈 +2,720 (+2.7 KB)
t-eth-elite	2,484,496	📈 +2,608 (+2.5 KB)
pico	777,784	📈 +2,520 (+2.5 KB)
seeed_xiao_rp2040	775,984	📈 +2,520 (+2.5 KB)
seeed_xiao_rp2350	763,416	📈 +2,480 (+2.4 KB)
pico2	765,256	📈 +2,464 (+2.4 KB)
rak11310	800,520	📈 +2,352 (+2.3 KB)
rak3172	184,340	📈 +2,232 (+2.2 KB)
wio-e5	236,596	📈 +2,136 (+2.1 KB)
t-deck-tft	3,805,040	📈 +1,872 (+1.8 KB)

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Updated for cca1cc1