Renders the blast radius of an agent-harness action: everything it will touch, grouped by effect kind, with destructive/irreversible effects made impossible to miss.

Render-dual of the blast_radius field carried by the harness's approval_requested payload (see docs/proposals/in-flight/harness-spec-frontend.md, §4 row A6). Typically embedded inside Raxol.UI.Components.Harness.ApprovalPrompt, but stands alone for the playground and for testing.

Props

• :blast_radius - %{writes: [path], deletes: [path], commands: [string], network: [host], reversible: boolean}. Every key is optional; missing lists default to [], missing :reversible defaults to true (a missing/absent flag is not itself a danger signal -- but deletes are still shown loud regardless, see below). A missing PROP defaults to %{} -- a caller that never mentions a blast radius at all is presumed to have nothing to declare, and renders the calm "No tracked effects." line. An explicit nil VALUE is a different claim entirely: it means a producer somewhere upstream had an approval to show but no blast radius payload for it (see Raxol.UI.Components.Harness.Block.extract_approval_content/1) -- that renders a standalone warning instead (see below), never the "No tracked effects." line, because an undeclared radius is not known to be safe.

Visual hierarchy

Per the tui-design-science skill: hue carries identity (what kind of effect this is), weight carries importance (how much attention it needs) -- kept independent so red stays reserved for the one thing it means.

• :deletes are always red + bold. Deleting earns a second look even inside an otherwise-reversible action.
• :commands are yellow (caution -- unpredictable side effects), :network is cyan (informational -- reaching outside the sandbox), :writes carry no hue, just weight.
• When blast_radius.reversible == false, every group loses its dim/default weight and renders bold -- nothing here is a "minor" effect anymore -- and a standalone IRREVERSIBLE marker leads the list, in red (the one other case the alarm hue is reserved for).
• When blast_radius.reversible == true, :commands / :network / :writes render dim -- present, but not competing with the deletes group for attention.

Every group is glyph-prefixed, not color-only, so the hierarchy survives for colorblind readers: ✗ delete, ▲ run, ℹ network, • write.