esim: show the profile icon image and its data size

pySim already requests the Icon tag (0x94) together with the other
ProfileInfo tags; the mapping dropped it, so the PWA only had the icon
type.

- esim.profiles(): each profile now carries `icon` (the image bytes as
  hex) and `icon_size` (byte count), null when the card sent no image.
- PWA: esimIconDataUrl() builds a data: URL (png/jpg -> image/png|jpeg)
  and the profile card shows the image unscaled to the left of the
  metadata rows; the Icon row keeps the type and adds the data size
  (e.g. 'png · 1234 B').
- tests: profiles icon/icon_size mapping (+ the absent case) and the
  frontend data URL / row / render checks; docs and sw simple-v231.

README.md

@@ -598,7 +598,7 @@ Values persist on the server until restart. Apply → hex updates; Save → POST
 
 **Network state monitor** — a compact **Network state** panel next to the simulation buttons shows what the card currently holds and what was last simulated. Its header carries the **simulated service state** (*Undefined* until a scenario or a Location status event sets it, then *Normal service* / *Limited service* / *No service*) with a *PLMN not allowed* marker when the location files or EF.FPLMN show a rejection, plus the current location: PLMN, country and operator, the LAI/RAI/TAI, and the **roaming class** (*Home* when the PLMN equals the HPLMN, *Home equivalent* when it is in EF.EHPLMN, otherwise *Guest*). Below it, one compact line per monitored file (IMSI, EHPLMN, SPDI, HPLMNwAcT, LOCI, PSLOCI, EPSLOCI, EPSNSC, CBMI, CBMIR, SMSstatus, FPLMN) with its decoded summary and how it was last updated (`init`, `write`, `read`, `refresh`); hover for the full decoded fields — long PLMN lists are abbreviated (EF.HPLMNwAcT shows only the first network plus a `… +N` counter). The panel reads the files once at equip (only when the ICCID was readable), updates them in place from the bytes the simulator wrote, re-reads EF.IMSI after every scenario and Location-status event, and never polls the card — **Refresh** re-reads all files on demand.
 
-**eSIM** — for an eUICC (SGP.22/SGP.32) the **eSIM** pill reads the chip and manages the installed profiles through the local ES10 interface (via pySim, no SM-DP+ contact): **Chip** (EID, EUICCInfo1/2 with decoded capability bit lists, card resources, CI PKI identifiers, category, forbidden PPRs, certification data; configured default SM-DP+ / root DS addresses; the rules authorisation table from ES10b GetRat), **Profiles** (state, nickname, provider, ICCID, ISD-P AID, class, owner; **Enable**/**Disable** switches a profile — the card usually sends REFRESH first and the card session is then re-initialized like an equip, so the ICCID, network state and every cached card view are re-read, and the requested state is verified against the re-read profile list) and **Notifications** (read-only pending list). No profile downloads, no notification handling and no SM-DP+ interaction — only the local ES10a/b/c functions are used; a non-eUICC card is reported as such.
+**eSIM** — for an eUICC (SGP.22/SGP.32) the **eSIM** pill reads the chip and manages the installed profiles through the local ES10 interface (via pySim, no SM-DP+ contact): **Chip** (EID, EUICCInfo1/2 with decoded capability bit lists, card resources, CI PKI identifiers, category, forbidden PPRs, certification data; configured default SM-DP+ / root DS addresses; the rules authorisation table from ES10b GetRat), **Profiles** (state, nickname, provider, ICCID, ISD-P AID, class, owner, and the icon image at its natural size with its type/byte size; **Enable**/**Disable** switches a profile — the card usually sends REFRESH first and the card session is then re-initialized like an equip, so the ICCID, network state and every cached card view are re-read, and the requested state is verified against the re-read profile list) and **Notifications** (read-only pending list). No profile downloads, no notification handling and no SM-DP+ interaction — only the local ES10a/b/c functions are used; a non-eUICC card is reported as such.
 
 ## SCP81