issue 2045 slice: display table + search unchecked residuals #3287

Parent

Parent: #2045
Grandparent: #2200
Related: #2326

Slice goal

Remove remaining unchecked suppressions on Explorer table/search display helpers.

In scope

1. PSDisplayFormatTableModel (unchecked at ~L277)
2. PSMainDisplayPanel (unchecked at ~L233)
3. PSExecutableSearch (unchecked at ~L318)
4. Prefer real generics / typed row-data helpers; no product UX change.
5. Standalone modules/DesktopContentExplorer mvnw clean install.

Out of scope

• PSActionManager (sibling)
• Applet removal / this-escape on PSNode

Acceptance

• Those three files have no remaining unchecked/rawtypes suppressions (or documented inherent cast)
• Module clean install green
• Update [8.2] Resolve javac warnings in perc-content-explorer module #2045 / [8.2] perc-content-explorer javac warnings residual after batch 1 (#2045) #2326 ## Agent progress

Modules

modules/DesktopContentExplorer

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