NOISSUE - Admin UI polish — table bugs, column cleanup, and form improvements

[ianmuchyri]

What type of PR is this?

This is a bug fix and UI polish update for the admin app. It resolves
several rendering bugs and improves the usability of admin tables and
create forms.

What does this do?

Bug fixes:

• Fix infinite re-render loop in DataTable caused by unstable filters
  array reference in a useEffect dependency — replaced with a stable
  string key derived from filter keys
• Fix duplicate React key "actions" in TanStack Table column definitions
  (data column and row-actions column shared the same id) — renamed the
  internal column to _row_actions

Table cleanup:

• Standardise column header casing to Title Case across roles,
  permission blocks, actions, action applicability, and policies tables
• Remove the id column from roles, permission blocks, and actions
  tables — IDs remain accessible via the Inspect sheet
• Remove "Unavailable actions" and "Advanced security surface"
  informational banners from the workspace and policies page

Edit button:

• Remove (not just disable) the Edit button for resources that do not
  support update operations

Forms:

• In the permission block create form, show the scope mode description
  only inside the dropdown items, not in the selected value displayed in
  the trigger
• In the policy create form, constrain the permission block dropdown to a
  max width with text wrapping so long labels do not overflow the layout
• In the role create form review step, render each selected permission
  block as its own card (with label + action badges) instead of a
  comma-joined string

Docs:

• Add full-text search to the docs site

Which issue(s) does this PR fix/relate to?

N/A

Have you included tests for your changes?

No — these are UI-only changes (layout, rendering, component wiring).
There are no logic or data-flow changes that require new test coverage.

Did you document any new/modified features?

No new features; all changes are bug fixes or visual polish.

Notes

• The DataTable fix uses // eslint-disable-next-line react-hooks/exhaustive-deps
  to silence the linter on the intentionally-stable filterKeysStr dependency.
• UUID values in table cells now render with font-mono text-xs break-all
  inside a w-40 container to prevent overflow into adjacent columns.