My photos no longer have the icon indicating crop and color adjustments

Your screen-clip looks like some kind of window that only shows part of the LrC interface. Maybe a Mac person can suggest why this can happen. I cannot explain it, I cannot reproduce in my Windows system.

For the LrC interface try some of the keyboard shortcuts-

Cmd+Opt+F   Revert to Normal screen Mode.

Shift+F     toggle through screen modes.

Cmd+Shift+F       Full screen and hide panels.

One oddity I do  note is that you have your catalog in the Applications path. I thought this would be unusual, and I suggest moving the .LRCAT catalog file to another folder such as ‘Documents’.

https://helpx.adobe.com/lightroom-classic/help/create-catalogs.html#copy_or_move_a_catalog

Library Path: /Applications/Adobe Lightroom Classic/HEBRON SCHOOL PHOTOS ONLY/HEBRON SCHOOL PHOTOS ONLY-v13-3.lrcat

Lightroom Classic version: 15.2.1 [ 202603161217-0bf813d9 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 26
Version: 26.4.0 [25E246]
Application architecture: x64
Logical processor count: 20
Processor speed: 3.6GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.212

Built-in memory: 32,768.0 MB
Dedicated GPU memory used by Lightroom: 12,397.7MB / 16,368.0MB (75%)
Real memory available to Lightroom: 32,768.0 MB
Real memory used by Lightroom: 9,916.0 MB (30.2%)
Virtual memory used by Lightroom: 167,050.0 MB
Memory cache size: 6,191.2MB
Internal Camera Raw version: 18.2.2 [ 2512 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 1355MB / 16383MB (8%)
Camera Raw real memory: 1455MB / 32768MB (4%)

Cache1: 
Final1- RAM:708.0MB, VRAM:3,154.0MB, WIZARD OF OZ REHERSAL PICTURES GROUP 1-20268639.CR3
Final2- RAM:646.0MB, VRAM:2,753.0MB, WIZARD OF OZ REHERSAL PICTURES GROUP 1-20268520-Enhanced-NR.dng
NT- RAM:1,354.0MB, VRAM:5,907.0MB, Combined:7,261.0MB

Cache2: 
m:6,191.2MB, n:704.6MB

U-main: 147.0MB

Standard Preview Size: 5120 pixels
Displays: 1) 5120x2880

Graphics Processor Info: 
Metal: AMD Radeon Pro 5700 XT
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: ON
GPU for Preview Generation: Auto (S5_15)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Applications/Adobe Lightroom Classic/HEBRON SCHOOL PHOTOS ONLY/HEBRON SCHOOL PHOTOS ONLY-v13-3.lrcat
Settings Folder: /Users/davidcentifanto/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) ColorChecker Camera Calibration
4) Flickr

Config.lua flags: 

So what “new version” do you have?  Insert an image of the screen you see from HELP > SYSTEM INFO...

Sounds a bit like you have installed ‘Lightroom’ when you are expecting to see ‘Lightroom-Classic’.

‘Lightroom’ does not have a Develop Module (only an [Edit] icon.)

And this is an image in Lightroom, in Square Grid View: